Merge branch 'main-frontend' into frontend

frontend/.dockerignore

@@ -0,0 +1,7 @@
+Dockerfile
+.dockerignore
+node_modules
+npm-debug.log
+README.md
+.next
+.git

frontend/.dockerignore.license

@@ -0,0 +1,3 @@
+SPDX-FileCopyrightText: 2021 The HedgeDoc developers (see AUTHORS file)
+
+SPDX-License-Identifier: CC0-1.0

frontend/.editorconfig

@@ -0,0 +1,470 @@
+# SPDX-FileCopyrightText: 2021 The HedgeDoc developers (see AUTHORS file)
+#
+# SPDX-License-Identifier: CC0-1.0
+
+[*]
+charset = utf-8
+end_of_line = lf
+indent_size = 4
+indent_style = space
+insert_final_newline = true
+max_line_length = 120
+tab_width = 4
+trim_trailing_whitespace = true
+ij_continuation_indent_size = 8
+ij_formatter_off_tag = @formatter:off
+ij_formatter_on_tag = @formatter:on
+ij_formatter_tags_enabled = false
+ij_smart_tabs = false
+ij_wrap_on_typing = false
+
+[*.css]
+ij_css_align_closing_brace_with_properties = false
+ij_css_blank_lines_around_nested_selector = 1
+ij_css_blank_lines_between_blocks = 1
+ij_css_brace_placement = end_of_line
+ij_css_enforce_quotes_on_format = false
+ij_css_hex_color_long_format = false
+ij_css_hex_color_lower_case = false
+ij_css_hex_color_short_format = false
+ij_css_hex_color_upper_case = false
+ij_css_keep_blank_lines_in_code = 2
+ij_css_keep_indents_on_empty_lines = false
+ij_css_keep_single_line_blocks = false
+ij_css_properties_order = font,font-family,font-size,font-weight,font-style,font-variant,font-size-adjust,font-stretch,line-height,position,z-index,top,right,bottom,left,display,visibility,float,clear,overflow,overflow-x,overflow-y,clip,zoom,align-content,align-items,align-self,flex,flex-flow,flex-basis,flex-direction,flex-grow,flex-shrink,flex-wrap,justify-content,order,box-sizing,width,min-width,max-width,height,min-height,max-height,margin,margin-top,margin-right,margin-bottom,margin-left,padding,padding-top,padding-right,padding-bottom,padding-left,table-layout,empty-cells,caption-side,border-spacing,border-collapse,list-style,list-style-position,list-style-type,list-style-image,content,quotes,counter-reset,counter-increment,resize,cursor,user-select,nav-index,nav-up,nav-right,nav-down,nav-left,transition,transition-delay,transition-timing-function,transition-duration,transition-property,transform,transform-origin,animation,animation-name,animation-duration,animation-play-state,animation-timing-function,animation-delay,animation-iteration-count,animation-direction,text-align,text-align-last,vertical-align,white-space,text-decoration,text-emphasis,text-emphasis-color,text-emphasis-style,text-emphasis-position,text-indent,text-justify,letter-spacing,word-spacing,text-outline,text-transform,text-wrap,text-overflow,text-overflow-ellipsis,text-overflow-mode,word-wrap,word-break,tab-size,hyphens,pointer-events,opacity,color,border,border-width,border-style,border-color,border-top,border-top-width,border-top-style,border-top-color,border-right,border-right-width,border-right-style,border-right-color,border-bottom,border-bottom-width,border-bottom-style,border-bottom-color,border-left,border-left-width,border-left-style,border-left-color,border-radius,border-top-left-radius,border-top-right-radius,border-bottom-right-radius,border-bottom-left-radius,border-image,border-image-source,border-image-slice,border-image-width,border-image-outset,border-image-repeat,outline,outline-width,outline-style,outline-color,outline-offset,background,background-color,background-image,background-repeat,background-attachment,background-position,background-position-x,background-position-y,background-clip,background-origin,background-size,box-decoration-break,box-shadow,text-shadow
+ij_css_space_after_colon = true
+ij_css_space_before_opening_brace = true
+ij_css_use_double_quotes = true
+ij_css_value_alignment = do_not_align
+
+[*.scss]
+indent_size = 2
+ij_scss_align_closing_brace_with_properties = false
+ij_scss_blank_lines_around_nested_selector = 1
+ij_scss_blank_lines_between_blocks = 1
+ij_scss_brace_placement = 0
+ij_scss_enforce_quotes_on_format = false
+ij_scss_hex_color_long_format = false
+ij_scss_hex_color_lower_case = false
+ij_scss_hex_color_short_format = false
+ij_scss_hex_color_upper_case = false
+ij_scss_keep_blank_lines_in_code = 2
+ij_scss_keep_indents_on_empty_lines = false
+ij_scss_keep_single_line_blocks = false
+ij_scss_properties_order = font, font-family, font-size, font-weight, font-style, font-variant, font-size-adjust, font-stretch, line-height, position, z-index, top, right, bottom, left, display, visibility, float, clear, overflow, overflow-x, overflow-y, clip, zoom, align-content, align-items, align-self, flex, flex-flow, flex-basis, flex-direction, flex-grow, flex-shrink, flex-wrap, justify-content, order, box-sizing, width, min-width, max-width, height, min-height, max-height, margin, margin-top, margin-right, margin-bottom, margin-left, padding, padding-top, padding-right, padding-bottom, padding-left, table-layout, empty-cells, caption-side, border-spacing, border-collapse, list-style, list-style-position, list-style-type, list-style-image, content, quotes, counter-reset, counter-increment, resize, cursor, user-select, nav-index, nav-up, nav-right, nav-down, nav-left, transition, transition-delay, transition-timing-function, transition-duration, transition-property, transform, transform-origin, animation, animation-name, animation-duration, animation-play-state, animation-timing-function, animation-delay, animation-iteration-count, animation-direction, text-align, text-align-last, vertical-align, white-space, text-decoration, text-emphasis, text-emphasis-color, text-emphasis-style, text-emphasis-position, text-indent, text-justify, letter-spacing, word-spacing, text-outline, text-transform, text-wrap, text-overflow, text-overflow-ellipsis, text-overflow-mode, word-wrap, word-break, tab-size, hyphens, pointer-events, opacity, color, border, border-width, border-style, border-color, border-top, border-top-width, border-top-style, border-top-color, border-right, border-right-width, border-right-style, border-right-color, border-bottom, border-bottom-width, border-bottom-style, border-bottom-color, border-left, border-left-width, border-left-style, border-left-color, border-radius, border-top-left-radius, border-top-right-radius, border-bottom-right-radius, border-bottom-left-radius, border-image, border-image-source, border-image-slice, border-image-width, border-image-outset, border-image-repeat, outline, outline-width, outline-style, outline-color, outline-offset, background, background-color, background-image, background-repeat, background-attachment, background-position, background-position-x, background-position-y, background-clip, background-origin, background-size, box-decoration-break, box-shadow, text-shadow
+ij_scss_space_after_colon = true
+ij_scss_space_before_opening_brace = true
+ij_scss_use_double_quotes = true
+ij_scss_value_alignment = 0
+
+[.editorconfig]
+ij_editorconfig_align_group_field_declarations = false
+ij_editorconfig_space_after_colon = false
+ij_editorconfig_space_after_comma = true
+ij_editorconfig_space_before_colon = false
+ij_editorconfig_space_before_comma = false
+ij_editorconfig_spaces_around_assignment_operators = true
+
+[{*.ats, *.ts, *.tsx}]
+indent_size = 2
+tab_width = 2
+ij_continuation_indent_size = 2
+ij_typescript_align_imports = false
+ij_typescript_align_multiline_array_initializer_expression = false
+ij_typescript_align_multiline_binary_operation = false
+ij_typescript_align_multiline_chained_methods = true
+ij_typescript_align_multiline_extends_list = false
+ij_typescript_align_multiline_for = true
+ij_typescript_align_multiline_parameters = false
+ij_typescript_align_multiline_parameters_in_calls = false
+ij_typescript_align_multiline_ternary_operation = false
+ij_typescript_align_object_properties = 0
+ij_typescript_align_union_types = true
+ij_typescript_align_var_statements = 0
+ij_typescript_array_initializer_new_line_after_left_brace = false
+ij_typescript_array_initializer_right_brace_on_new_line = false
+ij_typescript_array_initializer_wrap = normal
+ij_typescript_assignment_wrap = off
+ij_typescript_binary_operation_sign_on_next_line = false
+ij_typescript_binary_operation_wrap = off
+ij_typescript_blacklist_imports = rxjs/Rx,node_modules/**,**/node_modules/**,@angular/material,@angular/material/typings/**
+ij_typescript_blank_lines_after_imports = 1
+ij_typescript_blank_lines_around_class = 1
+ij_typescript_blank_lines_around_field = 0
+ij_typescript_blank_lines_around_field_in_interface = 0
+ij_typescript_blank_lines_around_function = 1
+ij_typescript_blank_lines_around_method = 1
+ij_typescript_blank_lines_around_method_in_interface = 1
+ij_typescript_block_brace_style = end_of_line
+ij_typescript_call_parameters_new_line_after_left_paren = false
+ij_typescript_call_parameters_right_paren_on_new_line = false
+ij_typescript_call_parameters_wrap = off
+ij_typescript_catch_on_new_line = false
+ij_typescript_chained_call_dot_on_new_line = true
+ij_typescript_class_brace_style = end_of_line
+ij_typescript_comma_on_new_line = false
+ij_typescript_do_while_brace_force = always
+ij_typescript_else_on_new_line = false
+ij_typescript_enforce_trailing_comma = remove
+ij_typescript_extends_keyword_wrap = off
+ij_typescript_extends_list_wrap = off
+ij_typescript_field_prefix = _
+ij_typescript_file_name_style = relaxed
+ij_typescript_finally_on_new_line = false
+ij_typescript_for_brace_force = always
+ij_typescript_for_statement_new_line_after_left_paren = false
+ij_typescript_for_statement_right_paren_on_new_line = false
+ij_typescript_for_statement_wrap = off
+ij_typescript_force_quote_style = true
+ij_typescript_force_semicolon_style = true
+ij_typescript_function_expression_brace_style = end_of_line
+ij_typescript_if_brace_force = always
+ij_typescript_import_merge_members = global
+ij_typescript_import_prefer_absolute_path = global
+ij_typescript_import_sort_members = true
+ij_typescript_import_sort_module_name = false
+ij_typescript_import_use_node_resolution = true
+ij_typescript_imports_wrap = on_every_item
+ij_typescript_indent_case_from_switch = true
+ij_typescript_indent_chained_calls = true
+ij_typescript_indent_package_children = 0
+ij_typescript_jsdoc_include_types = false
+ij_typescript_jsx_attribute_value = braces
+ij_typescript_keep_blank_lines_in_code = 2
+ij_typescript_keep_first_column_comment = true
+ij_typescript_keep_indents_on_empty_lines = false
+ij_typescript_keep_line_breaks = true
+ij_typescript_keep_simple_blocks_in_one_line = false
+ij_typescript_keep_simple_methods_in_one_line = false
+ij_typescript_line_comment_add_space = true
+ij_typescript_line_comment_at_first_column = false
+ij_typescript_method_brace_style = end_of_line
+ij_typescript_method_call_chain_wrap = split_into_lines
+ij_typescript_method_parameters_new_line_after_left_paren = false
+ij_typescript_method_parameters_right_paren_on_new_line = false
+ij_typescript_method_parameters_wrap = off
+ij_typescript_object_literal_wrap = off
+ij_typescript_parentheses_expression_new_line_after_left_paren = false
+ij_typescript_parentheses_expression_right_paren_on_new_line = false
+ij_typescript_place_assignment_sign_on_next_line = false
+ij_typescript_prefer_as_type_cast = false
+ij_typescript_prefer_explicit_types_function_expression_returns = false
+ij_typescript_prefer_explicit_types_function_returns = false
+ij_typescript_prefer_explicit_types_vars_fields = false
+ij_typescript_prefer_parameters_wrap = false
+ij_typescript_reformat_c_style_comments = true
+ij_typescript_space_after_colon = true
+ij_typescript_space_after_comma = true
+ij_typescript_space_after_dots_in_rest_parameter = false
+ij_typescript_space_after_generator_mult = true
+ij_typescript_space_after_property_colon = true
+ij_typescript_space_after_quest = true
+ij_typescript_space_after_type_colon = true
+ij_typescript_space_after_unary_not = false
+ij_typescript_space_before_async_arrow_lparen = true
+ij_typescript_space_before_catch_keyword = true
+ij_typescript_space_before_catch_left_brace = true
+ij_typescript_space_before_catch_parentheses = true
+ij_typescript_space_before_class_lbrace = true
+ij_typescript_space_before_class_left_brace = true
+ij_typescript_space_before_colon = true
+ij_typescript_space_before_comma = false
+ij_typescript_space_before_do_left_brace = true
+ij_typescript_space_before_else_keyword = true
+ij_typescript_space_before_else_left_brace = true
+ij_typescript_space_before_finally_keyword = true
+ij_typescript_space_before_finally_left_brace = true
+ij_typescript_space_before_for_left_brace = true
+ij_typescript_space_before_for_parentheses = true
+ij_typescript_space_before_for_semicolon = false
+ij_typescript_space_before_function_left_parenth = true
+ij_typescript_space_before_generator_mult = false
+ij_typescript_space_before_if_left_brace = true
+ij_typescript_space_before_if_parentheses = true
+ij_typescript_space_before_method_call_parentheses = false
+ij_typescript_space_before_method_left_brace = true
+ij_typescript_space_before_method_parentheses = false
+ij_typescript_space_before_property_colon = false
+ij_typescript_space_before_quest = true
+ij_typescript_space_before_switch_left_brace = true
+ij_typescript_space_before_switch_parentheses = true
+ij_typescript_space_before_try_left_brace = true
+ij_typescript_space_before_type_colon = false
+ij_typescript_space_before_unary_not = false
+ij_typescript_space_before_while_keyword = true
+ij_typescript_space_before_while_left_brace = true
+ij_typescript_space_before_while_parentheses = true
+ij_typescript_spaces_around_additive_operators = true
+ij_typescript_spaces_around_arrow_function_operator = true
+ij_typescript_spaces_around_assignment_operators = true
+ij_typescript_spaces_around_bitwise_operators = true
+ij_typescript_spaces_around_equality_operators = true
+ij_typescript_spaces_around_logical_operators = true
+ij_typescript_spaces_around_multiplicative_operators = true
+ij_typescript_spaces_around_relational_operators = true
+ij_typescript_spaces_around_shift_operators = true
+ij_typescript_spaces_around_unary_operator = false
+ij_typescript_spaces_within_array_initializer_brackets = false
+ij_typescript_spaces_within_brackets = false
+ij_typescript_spaces_within_catch_parentheses = false
+ij_typescript_spaces_within_for_parentheses = false
+ij_typescript_spaces_within_if_parentheses = false
+ij_typescript_spaces_within_imports = true
+ij_typescript_spaces_within_interpolation_expressions = true
+ij_typescript_spaces_within_method_call_parentheses = false
+ij_typescript_spaces_within_method_parentheses = false
+ij_typescript_spaces_within_object_literal_braces = true
+ij_typescript_spaces_within_object_type_braces = true
+ij_typescript_spaces_within_parentheses = false
+ij_typescript_spaces_within_switch_parentheses = false
+ij_typescript_spaces_within_type_assertion = false
+ij_typescript_spaces_within_union_types = true
+ij_typescript_spaces_within_while_parentheses = false
+ij_typescript_special_else_if_treatment = true
+ij_typescript_ternary_operation_signs_on_next_line = false
+ij_typescript_ternary_operation_wrap = off
+ij_typescript_union_types_wrap = normal
+ij_typescript_use_chained_calls_group_indents = false
+ij_typescript_use_double_quotes = false
+ij_typescript_use_explicit_js_extension = global
+ij_typescript_use_path_mapping = always
+ij_typescript_use_public_modifier = false
+ij_typescript_use_semicolon_after_statement = false
+ij_typescript_var_declaration_wrap = on_every_item
+ij_typescript_while_brace_force = always
+ij_typescript_while_on_new_line = false
+ij_typescript_wrap_comments = false
+
+[{*.cjs,*.js}]
+indent_size = 2
+tab_width = 2
+ij_continuation_indent_size = 2
+ij_javascript_align_imports = false
+ij_javascript_align_multiline_array_initializer_expression = false
+ij_javascript_align_multiline_binary_operation = false
+ij_javascript_align_multiline_chained_methods = false
+ij_javascript_align_multiline_extends_list = false
+ij_javascript_align_multiline_for = true
+ij_javascript_align_multiline_parameters = true
+ij_javascript_align_multiline_parameters_in_calls = false
+ij_javascript_align_multiline_ternary_operation = false
+ij_javascript_align_object_properties = 0
+ij_javascript_align_union_types = false
+ij_javascript_align_var_statements = 0
+ij_javascript_array_initializer_new_line_after_left_brace = false
+ij_javascript_array_initializer_right_brace_on_new_line = false
+ij_javascript_array_initializer_wrap = off
+ij_javascript_assignment_wrap = off
+ij_javascript_binary_operation_sign_on_next_line = false
+ij_javascript_binary_operation_wrap = off
+ij_javascript_blacklist_imports = rxjs/Rx,node_modules/**,**/node_modules/**,@angular/material,@angular/material/typings/**
+ij_javascript_blank_lines_after_imports = 1
+ij_javascript_blank_lines_around_class = 1
+ij_javascript_blank_lines_around_field = 0
+ij_javascript_blank_lines_around_function = 1
+ij_javascript_blank_lines_around_method = 1
+ij_javascript_block_brace_style = end_of_line
+ij_javascript_call_parameters_new_line_after_left_paren = false
+ij_javascript_call_parameters_right_paren_on_new_line = false
+ij_javascript_call_parameters_wrap = off
+ij_javascript_catch_on_new_line = false
+ij_javascript_chained_call_dot_on_new_line = true
+ij_javascript_class_brace_style = end_of_line
+ij_javascript_comma_on_new_line = false
+ij_javascript_do_while_brace_force = never
+ij_javascript_else_on_new_line = false
+ij_javascript_enforce_trailing_comma = keep
+ij_javascript_extends_keyword_wrap = off
+ij_javascript_extends_list_wrap = off
+ij_javascript_field_prefix = _
+ij_javascript_file_name_style = relaxed
+ij_javascript_finally_on_new_line = false
+ij_javascript_for_brace_force = never
+ij_javascript_for_statement_new_line_after_left_paren = false
+ij_javascript_for_statement_right_paren_on_new_line = false
+ij_javascript_for_statement_wrap = off
+ij_javascript_force_quote_style = false
+ij_javascript_force_semicolon_style = false
+ij_javascript_function_expression_brace_style = end_of_line
+ij_javascript_if_brace_force = never
+ij_javascript_import_merge_members = global
+ij_javascript_import_prefer_absolute_path = global
+ij_javascript_import_sort_members = true
+ij_javascript_import_sort_module_name = false
+ij_javascript_import_use_node_resolution = true
+ij_javascript_imports_wrap = on_every_item
+ij_javascript_indent_case_from_switch = true
+ij_javascript_indent_chained_calls = true
+ij_javascript_indent_package_children = 0
+ij_javascript_jsx_attribute_value = braces
+ij_javascript_keep_blank_lines_in_code = 2
+ij_javascript_keep_first_column_comment = true
+ij_javascript_keep_indents_on_empty_lines = false
+ij_javascript_keep_line_breaks = true
+ij_javascript_keep_simple_blocks_in_one_line = false
+ij_javascript_keep_simple_methods_in_one_line = false
+ij_javascript_line_comment_add_space = true
+ij_javascript_line_comment_at_first_column = false
+ij_javascript_method_brace_style = end_of_line
+ij_javascript_method_call_chain_wrap = off
+ij_javascript_method_parameters_new_line_after_left_paren = false
+ij_javascript_method_parameters_right_paren_on_new_line = false
+ij_javascript_method_parameters_wrap = off
+ij_javascript_object_literal_wrap = on_every_item
+ij_javascript_parentheses_expression_new_line_after_left_paren = false
+ij_javascript_parentheses_expression_right_paren_on_new_line = false
+ij_javascript_place_assignment_sign_on_next_line = false
+ij_javascript_prefer_as_type_cast = false
+ij_javascript_prefer_explicit_types_function_expression_returns = false
+ij_javascript_prefer_explicit_types_function_returns = false
+ij_javascript_prefer_explicit_types_vars_fields = false
+ij_javascript_prefer_parameters_wrap = false
+ij_javascript_reformat_c_style_comments = false
+ij_javascript_space_after_colon = true
+ij_javascript_space_after_comma = true
+ij_javascript_space_after_dots_in_rest_parameter = false
+ij_javascript_space_after_generator_mult = true
+ij_javascript_space_after_property_colon = true
+ij_javascript_space_after_quest = true
+ij_javascript_space_after_type_colon = true
+ij_javascript_space_after_unary_not = false
+ij_javascript_space_before_async_arrow_lparen = true
+ij_javascript_space_before_catch_keyword = true
+ij_javascript_space_before_catch_left_brace = true
+ij_javascript_space_before_catch_parentheses = true
+ij_javascript_space_before_class_lbrace = true
+ij_javascript_space_before_class_left_brace = true
+ij_javascript_space_before_colon = true
+ij_javascript_space_before_comma = false
+ij_javascript_space_before_do_left_brace = true
+ij_javascript_space_before_else_keyword = true
+ij_javascript_space_before_else_left_brace = true
+ij_javascript_space_before_finally_keyword = true
+ij_javascript_space_before_finally_left_brace = true
+ij_javascript_space_before_for_left_brace = true
+ij_javascript_space_before_for_parentheses = true
+ij_javascript_space_before_for_semicolon = false
+ij_javascript_space_before_function_left_parenth = true
+ij_javascript_space_before_generator_mult = false
+ij_javascript_space_before_if_left_brace = true
+ij_javascript_space_before_if_parentheses = true
+ij_javascript_space_before_method_call_parentheses = false
+ij_javascript_space_before_method_left_brace = true
+ij_javascript_space_before_method_parentheses = false
+ij_javascript_space_before_property_colon = false
+ij_javascript_space_before_quest = true
+ij_javascript_space_before_switch_left_brace = true
+ij_javascript_space_before_switch_parentheses = true
+ij_javascript_space_before_try_left_brace = true
+ij_javascript_space_before_type_colon = false
+ij_javascript_space_before_unary_not = false
+ij_javascript_space_before_while_keyword = true
+ij_javascript_space_before_while_left_brace = true
+ij_javascript_space_before_while_parentheses = true
+ij_javascript_spaces_around_additive_operators = true
+ij_javascript_spaces_around_arrow_function_operator = true
+ij_javascript_spaces_around_assignment_operators = true
+ij_javascript_spaces_around_bitwise_operators = true
+ij_javascript_spaces_around_equality_operators = true
+ij_javascript_spaces_around_logical_operators = true
+ij_javascript_spaces_around_multiplicative_operators = true
+ij_javascript_spaces_around_relational_operators = true
+ij_javascript_spaces_around_shift_operators = true
+ij_javascript_spaces_around_unary_operator = false
+ij_javascript_spaces_within_array_initializer_brackets = false
+ij_javascript_spaces_within_brackets = false
+ij_javascript_spaces_within_catch_parentheses = false
+ij_javascript_spaces_within_for_parentheses = false
+ij_javascript_spaces_within_if_parentheses = false
+ij_javascript_spaces_within_imports = false
+ij_javascript_spaces_within_interpolation_expressions = false
+ij_javascript_spaces_within_method_call_parentheses = false
+ij_javascript_spaces_within_method_parentheses = false
+ij_javascript_spaces_within_object_literal_braces = false
+ij_javascript_spaces_within_object_type_braces = true
+ij_javascript_spaces_within_parentheses = false
+ij_javascript_spaces_within_switch_parentheses = false
+ij_javascript_spaces_within_type_assertion = false
+ij_javascript_spaces_within_union_types = true
+ij_javascript_spaces_within_while_parentheses = false
+ij_javascript_special_else_if_treatment = true
+ij_javascript_ternary_operation_signs_on_next_line = false
+ij_javascript_ternary_operation_wrap = off
+ij_javascript_union_types_wrap = on_every_item
+ij_javascript_use_chained_calls_group_indents = false
+ij_javascript_use_double_quotes = true
+ij_javascript_use_explicit_js_extension = global
+ij_javascript_use_path_mapping = always
+ij_javascript_use_public_modifier = false
+ij_javascript_use_semicolon_after_statement = true
+ij_javascript_var_declaration_wrap = normal
+ij_javascript_while_brace_force = never
+ij_javascript_while_on_new_line = false
+ij_javascript_wrap_comments = false
+
+[{*.har,*.jsb2,*.jsb3,*.json,.babelrc,.eslintrc,.prettierrc,.stylelintrc,bowerrc,jest.config}]
+indent_size = 2
+ij_json_keep_blank_lines_in_code = 0
+ij_json_keep_indents_on_empty_lines = false
+ij_json_keep_line_breaks = true
+ij_json_space_after_colon = true
+ij_json_space_after_comma = true
+ij_json_space_before_colon = true
+ij_json_space_before_comma = false
+ij_json_spaces_within_braces = false
+ij_json_spaces_within_brackets = false
+ij_json_wrap_long_lines = false
+
+[{*.htm,*.html,*.ng,*.sht,*.shtm,*.shtml}]
+ij_html_add_new_line_before_tags = body,div,p,form,h1,h2,h3
+ij_html_align_attributes = true
+ij_html_align_text = false
+ij_html_attribute_wrap = normal
+ij_html_block_comment_at_first_column = true
+ij_html_do_not_align_children_of_min_lines = 0
+ij_html_do_not_break_if_inline_tags = title,h1,h2,h3,h4,h5,h6,p
+ij_html_do_not_indent_children_of_tags = html,body,thead,tbody,tfoot
+ij_html_enforce_quotes = false
+ij_html_inline_tags = a,abbr,acronym,b,basefont,bdo,big,br,cite,cite,code,dfn,em,font,i,img,input,kbd,label,q,s,samp,select,small,span,strike,strong,sub,sup,textarea,tt,u,var
+ij_html_keep_blank_lines = 2
+ij_html_keep_indents_on_empty_lines = false
+ij_html_keep_line_breaks = true
+ij_html_keep_line_breaks_in_text = true
+ij_html_keep_whitespaces = false
+ij_html_keep_whitespaces_inside = span, pre, textarea
+ij_html_line_comment_at_first_column = true
+ij_html_new_line_after_last_attribute = never
+ij_html_new_line_before_first_attribute = never
+ij_html_quote_style = double
+ij_html_remove_new_line_before_tags = br
+ij_html_space_after_tag_name = false
+ij_html_space_around_equality_in_attribute = false
+ij_html_space_inside_empty_tag = false
+ij_html_text_wrap = normal
+ij_html_uniform_ident = false
+
+[{*.markdown, *.md}]
+ij_markdown_force_one_space_after_blockquote_symbol = true
+ij_markdown_force_one_space_after_header_symbol = true
+ij_markdown_force_one_space_after_list_bullet = true
+ij_markdown_force_one_space_between_words = true
+ij_markdown_keep_indents_on_empty_lines = false
+ij_markdown_max_lines_around_block_elements = 1
+ij_markdown_max_lines_around_header = 1
+ij_markdown_max_lines_between_paragraphs = 1
+ij_markdown_min_lines_around_block_elements = 1
+ij_markdown_min_lines_around_header = 1
+ij_markdown_min_lines_between_paragraphs = 1
+
+[{*.yaml, *.yml}]
+indent_size = 2
+ij_yaml_align_values_properties = do_not_align
+ij_yaml_autoinsert_sequence_marker = true
+ij_yaml_block_mapping_on_new_line = false
+ij_yaml_indent_sequence_value = true
+ij_yaml_keep_indents_on_empty_lines = false
+ij_yaml_keep_line_breaks = true
+ij_yaml_sequence_on_new_line = false
+ij_yaml_space_before_colon = false
+ij_yaml_spaces_within_braces = true
+ij_yaml_spaces_within_brackets = true

frontend/.env.development

@@ -0,0 +1,3 @@
+NEXT_PUBLIC_USE_MOCK_API=true
+HD_EDITOR_BASE_URL="http://localhost:3001/"
+HD_RENDERER_BASE_URL="http://127.0.0.1:3001/"

frontend/.env.development.license

@@ -0,0 +1,3 @@
+SPDX-FileCopyrightText: 2021 The HedgeDoc developers (see AUTHORS file)
+
+SPDX-License-Identifier: CC0-1.0

frontend/.env.production

@@ -0,0 +1,2 @@
+NEXT_PUBLIC_USE_MOCK_API=false
+NEXT_PUBLIC_TEST_MODE=false

frontend/.env.production.license

@@ -0,0 +1,3 @@
+SPDX-FileCopyrightText: 2021 The HedgeDoc developers (see AUTHORS file)
+
+SPDX-License-Identifier: CC0-1.0

frontend/.env.test

@@ -0,0 +1,3 @@
+NEXT_PUBLIC_USE_MOCK_API=true
+HD_EDITOR_BASE_URL="http://127.0.0.1:3001/"
+HD_RENDERER_BASE_URL="http://127.0.0.1:3001/"

frontend/.env.test.license

@@ -0,0 +1,3 @@
+SPDX-FileCopyrightText: 2021 The HedgeDoc developers (see AUTHORS file)
+
+SPDX-License-Identifier: CC0-1.0

frontend/.eslintrc.json

@@ -0,0 +1,54 @@
+{
+  "root": true,
+  "parserOptions": {
+    "tsconfigRootDir": ".",
+    "project": [
+      "./tsconfig.json"
+    ]
+  },
+  "rules": {
+    "prettier/prettier": "error",
+    "no-use-before-define": "off",
+    "no-debugger": "warn",
+    "default-param-last": "off",
+    "@typescript-eslint/consistent-type-imports": [
+      "error",
+      {
+        "prefer": "type-imports",
+        "disallowTypeAnnotations": false
+      }
+    ],
+    "jest/no-disabled-tests": "warn",
+    "jest/no-focused-tests": "error",
+    "jest/no-identical-title": "error",
+    "jest/prefer-to-have-length": "warn",
+    "jest/valid-expect": "error"
+  },
+  "env": {
+    "jest": true,
+    "jest/globals": true
+  },
+  "plugins": [
+    "@typescript-eslint",
+    "testing-library",
+    "jest",
+    "prettier"
+  ],
+  "extends": [
+    "next/core-web-vitals",
+    "eslint:recommended",
+    "plugin:@typescript-eslint/eslint-recommended",
+    "plugin:@typescript-eslint/recommended",
+    "plugin:@typescript-eslint/recommended-requiring-type-checking",
+    "prettier"
+  ],
+  "overrides": [
+    {
+      "files": [
+        "**/__tests__/**/*.[jt]s?(x)",
+        "**/?(*.)+(spec|test).[jt]s?(x)"
+      ],
+      "extends": ["plugin:testing-library/react"]
+    }
+  ]
+}

frontend/.eslintrc.json.license

@@ -0,0 +1,3 @@
+SPDX-FileCopyrightText: 2021 The HedgeDoc developers (see AUTHORS file)
+
+SPDX-License-Identifier: CC0-1.0

frontend/.gitattributes

@@ -0,0 +1,3 @@
+/.yarn/releases/** binary
+/.yarn/plugins/** binary
+

frontend/.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,38 @@
+---
+name: Bug report
+about: Create a report to help us improve
+title: ''
+labels: 'bug'
+assignees: ''
+
+---
+
+<!-- If you're requesting an improvement for an existing feature, then please consider filling out an "enhancement request" instead! -->
+<!-- If you're requesting a new feature, that isn't part of this project yet, then please consider filling out a "feature request" instead! -->
+
+**Description**
+<!-- A clear and concise description of what the bug is. -->
+
+**To Reproduce**
+<!-- Steps to reproduce the behavior:
+1. Go to '...'
+2. Click on '....'
+3. Scroll down to '....'
+4. See error -->
+
+**Expected behavior**
+<!-- A clear and concise description of what you expected to happen. -->
+
+**Screenshots**
+<!-- If applicable, add screenshots to help explain your problem. Please don't add screenshots of your terminal or browser console. -->
+
+**Your Setup (please complete the following information):**
+ - OS: [e.g. iOS 13, Ubuntu 20.04, Windows 10]
+ - Browser with version [e.g. Chrome 81, Safari 13.1]
+   - [Check your Browser Version](https://www.whatismybrowser.com/)
+ - HedgeDoc version (Click "Version info" in the footer)
+     - server [e.g. 2.0]
+     - client [e.g. 2.0]
+
+**Additional context**
+<!-- Add any other context about the problem here. -->

frontend/.github/ISSUE_TEMPLATE/enhancement_request.md

@@ -0,0 +1,29 @@
+---
+name: Enhancement request
+about: Suggest an enhancement of an existing feature.
+title: ''
+labels: 'enhancement'
+assignees: ''
+
+---
+
+<!-- If you're requesting a new feature, that isn't part of this project yet, then please consider filling out a "feature request" instead! -->
+<!-- If you want to report a bug or an error, then please consider filling out a "bug report" instead! -->
+
+**Which part of the project should be enhanced?**
+<!-- A clean and concise description of which part should be modified. -->
+
+**Is your enhancement request related to a problem? Please describe.**
+<!-- A clear and concise description of what the problem is. Ex. I'm always frustrated when [...] -->
+
+**Describe the solution you'd like**
+<!-- A clear and concise description of what you want to happen and why.
+-->
+
+**Describe alternatives you've considered**
+<!-- A clear and concise description of any alternative solutions or features you've considered.
+-->
+
+**Additional context**
+<!-- Add any other context or screenshots about the feature request here.
+-->

frontend/.github/ISSUE_TEMPLATE/feature_request.md

@@ -0,0 +1,27 @@
+---
+name: Feature request
+about: Suggest a new feature for this project, which isn't existing yet.
+title: ''
+labels: 'feature'
+assignees: ''
+
+---
+
+<!-- If you're requesting an improvement for an existing feature, then please consider filling out an "enhancement request" instead! -->
+<!-- If you want to report a bug or an error, then please consider filling out a "bug report" instead! -->
+
+
+**Is your feature request related to a problem? Please describe.**
+<!-- A clear and concise description of what the problem is. Ex. I'm always frustrated when [...] -->
+
+**Describe the solution you'd like**
+<!-- A clear and concise description of what you want to happen.
+-->
+
+**Describe alternatives you've considered**
+<!-- A clear and concise description of any alternative solutions or features you've considered.
+-->
+
+**Additional context**
+<!-- Add any other context or screenshots about the feature request here.
+-->

frontend/.github/ISSUE_TEMPLATE/question---other.md

@@ -0,0 +1,16 @@
+---
+name: Question / Other
+about: Questions about the project, features, or organziational issues
+title: ''
+labels: question
+assignees: ''
+
+---
+
+<!-- If you're requesting an improvement for an existing feature, then please consider filling out an "enhancement request" instead! -->
+<!-- If you're requesting a new feature, that isn't part of this project yet, then please consider filling out a "feature request" instead! -->
+<!-- If you want to report a bug or an error, then please consider filling out a "bug report" instead! -->
+
+**What is your question?**
+
+<!-- Please be precise and make it possible to understand your question. -->

frontend/.github/pull_request_template.md

@@ -0,0 +1,18 @@
+### Component/Part
+<!-- e.g markdown editor -->
+
+### Description
+This PR fixes/adds/improves/...
+
+### Steps
+
+<!-- Please tick all steps this PR performs (if something is not necessary, please remove it) -->
+
+- [ ] Added implementation
+- [ ] Added / updated tests
+- [ ] Added / updated documentation
+- [ ] Extended changelog
+- [ ] I read the [contribution documentation](https://github.com/hedgedoc/react-client/blob/main/CONTRIBUTING.md) and signed-off my commits to accept the DCO.
+
+### Related Issue(s)
+<!-- e.g #123 -->

frontend/.github/workflows/build.yml

@@ -0,0 +1,49 @@
+# SPDX-FileCopyrightText: 2021 The HedgeDoc developers (see AUTHORS file)
+#
+# SPDX-License-Identifier: AGPL-3.0-only
+
+name: test, build
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        node: [ '14', '16', '18' ]
+    name: Test and build with NodeJS ${{ matrix.node }}
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v3
+
+      - name: Get yarn cache directory path
+        id: yarn-cache-dir-path
+        run: echo "dir=$(yarn config get cacheFolder)" >> $GITHUB_OUTPUT
+
+      - name: Cache yarn cache
+        uses: actions/cache@v3
+        id: yarn-cache
+        with:
+          path: ${{ steps.yarn-cache-dir-path.outputs.dir }}
+          key: ${{ runner.os }}-${{ matrix.node }}-yarn-${{ hashFiles('**/yarn.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-yarn-${{ matrix.node }}
+
+      - name: Set up NodeJS
+        uses: actions/setup-node@v3
+        with:
+          node-version: ${{ matrix.node }}
+
+      - name: Install dependencies
+        run: yarn install --immutable
+
+      - name: Test Project
+        run: yarn test:ci
+
+      - name: Build project
+        run: yarn build:mock

frontend/.github/workflows/codeql.yml

@@ -0,0 +1,39 @@
+# SPDX-FileCopyrightText: 2021 The HedgeDoc developers (see AUTHORS file)
+#
+# SPDX-License-Identifier: AGPL-3.0-only
+
+name: "CodeQL"
+
+on:
+  push:
+    branches: [ "main" ]
+  pull_request:
+    branches: [ "main" ]
+  schedule:
+    - cron: "54 23 * * 2"
+
+jobs:
+  analyze:
+    name: Analyze
+    runs-on: ubuntu-latest
+    permissions:
+      actions: read
+      contents: read
+      security-events: write
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Initialize CodeQL
+        uses: github/codeql-action/init@v2
+        with:
+          languages: TypeScript
+          queries: +security-and-quality
+
+      - name: Autobuild
+        uses: github/codeql-action/autobuild@v2
+
+      - name: Perform CodeQL Analysis
+        uses: github/codeql-action/analyze@v2
+        with:
+          category: "/language:TypeScript"

frontend/.github/workflows/deploy-main.yml

@@ -0,0 +1,68 @@
+# SPDX-FileCopyrightText: 2021 The HedgeDoc developers (see AUTHORS file)
+#
+# SPDX-License-Identifier: AGPL-3.0-only
+
+name: deploy
+
+on:
+  push:
+    branches: [ main ]
+
+env:
+  NETLIFY_VERSION: 12.0.11
+  NODE_VERSION: 18
+
+jobs:
+  deploy:
+    runs-on: ubuntu-latest
+    name: Deploys to netlify
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v3
+
+      - name: Get yarn cache directory path
+        id: yarn-cache-dir-path
+        run: echo "dir=$(yarn config get cacheFolder)" >> $GITHUB_OUTPUT
+
+      - name: Cache yarn cache
+        uses: actions/cache@v3
+        id: yarn-cache
+        with:
+          path: ${{ steps.yarn-cache-dir-path.outputs.dir }}
+          key: ${{ runner.os }}-${{ env.NODE_VERSION }}-yarn-${{ hashFiles('**/yarn.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-yarn-${{ env.NODE_VERSION }}
+
+      - name: Set up NodeJS
+        uses: actions/setup-node@v3
+        with:
+          node-version: ${{ env.NODE_VERSION }}
+
+      - name: Patch intro.md to include netlify banner.
+        run: cp netlify/intro.md public/public/intro.md
+
+      - name: Patch motd.md to include privacy policy.
+        run: cp netlify/motd.md public/public/motd.md
+
+      - name: Patch version.json to include git hash
+        run: jq ".version = \"0.0.0+${GITHUB_SHA:0:8}\"" src/version.json > src/_version.json && mv src/_version.json src/version.json
+
+      - name: Patch base URL
+        run: echo "HD_EDITOR_BASE_URL=\"https://hedgedoc.dev/\"" >> .env.production
+
+      - name: Install dependencies
+        run: yarn install --immutable
+
+      - name: Build app
+        run: yarn build:mock
+
+      - name: Remove Next.js cache to avoid it being deployed
+        run: rm -r .next/cache
+
+      - name: Install netlify CLI
+        run: "npm install -g netlify-cli@${{ env.NETLIFY_VERSION }}"
+
+      - name: Run netlify CLI deployment
+        env:
+          NETLIFY_AUTH_TOKEN: ${{ secrets.NETLIFY_AUTH_TOKEN }}
+        run: "netlify deploy --build --prod --message \"${{ github.event.head_commit.id }}: ${{ github.event.head_commit.message }}\""

frontend/.github/workflows/deploy-pr.yml

@@ -0,0 +1,113 @@
+# SPDX-FileCopyrightText: 2021 The HedgeDoc developers (see AUTHORS file)
+#
+# SPDX-License-Identifier: AGPL-3.0-only
+
+name: deploy
+
+on:
+  pull_request:
+    branches: [ main ]
+    types:
+      - labeled
+      - opened
+      - synchronize
+      - reopened
+      - ready_for_review
+  pull_request_target:
+    branches: [ main ]
+    types:
+      - labeled
+      - opened
+      - synchronize
+      - reopened
+      - ready_for_review
+
+permissions:
+  contents: read
+  deployments: write
+
+env:
+  NETLIFY_VERSION: 12.0.11
+  NODE_VERSION: 18
+
+jobs:
+  deploy:
+    if: (github.event.pull_request.draft == false || contains( github.event.pull_request.labels.*.name, 'FORCE DEPLOY')) && (github.event_name == 'pull_request_target') == github.event.pull_request.head.repo.fork
+    runs-on: ubuntu-latest
+    name: Deploys to netlify
+    env:
+      DEPLOY_URL: "https://${{ github.event.number }}--hedgedoc-ui-test.netlify.app/"
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v3
+        with:
+          ref: ${{ github.event.pull_request.head.sha }}
+
+      - name: Get yarn cache directory path
+        id: yarn-cache-dir-path
+        run: echo "dir=$(yarn config get cacheFolder)" >> $GITHUB_OUTPUT
+
+      - name: Cache yarn cache
+        uses: actions/cache@v3
+        id: yarn-cache
+        with:
+          path: ${{ steps.yarn-cache-dir-path.outputs.dir }}
+          key: ${{ runner.os }}-${{ env.NODE_VERSION }}-yarn-${{ hashFiles('**/yarn.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-yarn-${{ env.NODE_VERSION }}
+
+      - name: Set up NodeJS
+        uses: actions/setup-node@v3
+        with:
+          node-version: ${{ env.NODE_VERSION }}
+
+      - name: Patch intro.md to include netlify banner.
+        run: cp netlify/intro.md public/public/intro.md
+
+      - name: Patch motd.md to include privacy policy.
+        run: cp netlify/motd.md public/public/motd.md
+
+      - name: Patch version.json to include git hash
+        run: jq ".version = \"0.0.0+${GITHUB_SHA:0:8}\"" src/version.json > src/_version.json && mv src/_version.json src/version.json
+
+      - name: Patch base URL
+        run: echo "HD_EDITOR_BASE_URL=\"${{ env.DEPLOY_URL }}\"" >> .env.production
+
+      - name: Install dependencies
+        run: yarn install --immutable
+
+      - name: Build app
+        run: yarn build:mock
+
+      - name: Remove Next.js cache to avoid it being deployed
+        run: rm -r .next/cache
+
+      - name: Mark GitHub deployment as started
+        uses: bobheadxi/deployments@v1.3.0
+        id: github-deployment
+        with:
+          step: start
+          token: ${{ secrets.GITHUB_TOKEN }}
+          env: "PR #${{ github.event.number }}"
+          override: true
+          ref: ${{ github.head_ref }}
+
+      - name: Install netlify CLI
+        run: "npm install -g netlify-cli@${{ env.NETLIFY_VERSION }}"
+
+      - name: Run netlify CLI
+        env:
+          NETLIFY_AUTH_TOKEN: ${{ secrets.NETLIFY_AUTH_TOKEN }}
+        run: "netlify deploy --build --context deploy-preview --alias \"${{ github.event.number }}\" --json --message \"PR #${{ github.event.number }}\""
+
+      - name: Mark GitHub deployment as finished
+        if: always()
+        uses: bobheadxi/deployments@v1.3.0
+        with:
+          step: finish
+          token: ${{ secrets.GITHUB_TOKEN }}
+          env_url: ${{ env.DEPLOY_URL }}
+          env: ${{ steps.github-deployment.outputs.env }}
+          status: ${{ job.status }}
+          deployment_id: ${{ steps.github-deployment.outputs.deployment_id }}
+          override: true

frontend/.github/workflows/docker.yml

@@ -0,0 +1,50 @@
+# SPDX-FileCopyrightText: 2022 The HedgeDoc developers (see AUTHORS file)
+#
+# SPDX-License-Identifier: AGPL-3.0-only
+
+name: Build Docker Image
+
+on:
+  push:
+    branches: [ main ]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Generate Docker metadata
+        id: meta
+        uses: docker/metadata-action@v4
+        with:
+          images: ghcr.io/${{ github.repository_owner }}/${{ github.event.repository.name }}
+          tags: |
+            type=ref,event=branch
+            type=semver,pattern={{version}}
+            type=semver,pattern={{major}}.{{minor}}
+            type=semver,pattern={{major}}
+
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v2
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v2
+
+      - name: Login to GHCR
+        if: github.event_name != 'pull_request'
+        uses: docker/login-action@v2
+        with:
+          registry: ghcr.io
+          username: ${{ github.repository_owner }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Build and push
+        uses: docker/build-push-action@v3
+        with:
+          push: true
+          file: Dockerfile
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          cache-from: type=gha
+          cache-to: type=gha,mode=max
+          build-args: |
+            BUILD_VERSION=${{ github.event.head_commit.id }}

frontend/.github/workflows/e2e.yml

@@ -0,0 +1,146 @@
+# SPDX-FileCopyrightText: 2021 The HedgeDoc developers (see AUTHORS file)
+#
+# SPDX-License-Identifier: AGPL-3.0-only
+
+name: e2e
+
+on:
+  push:
+    branches: [ main ]
+  pull_request_target:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+
+permissions:
+  contents: read
+
+env:
+  NODE_VERSION: 18
+  HEAD_COMMIT_HASH: "${{ !!github.event.pull_request && github.event.pull_request.head.sha || github.sha }}"
+
+jobs:
+  build-frontend:
+    if: "${{ (github.event_name == 'pull_request_target') == github.event.pull_request.head.repo.fork  }}"
+    runs-on: ubuntu-latest
+    name: Build test build of frontend
+    steps:
+      - name: Check out repo
+        uses: actions/checkout@v3
+        with:
+          ref: ${{ env.HEAD_COMMIT_HASH }}
+
+      - name: Cache build
+        uses: actions/cache@v3.0.11
+        id: build-cache
+        with:
+          path: .next
+          key: ${{ env.HEAD_COMMIT_HASH }}
+
+      - name: Get yarn cache directory path
+        id: yarn-cache-dir-path
+        if: steps.build-cache.outputs.cache-hit != 'true'
+        run: echo "dir=$(yarn config get cacheFolder)" >> $GITHUB_OUTPUT
+
+      - name: Cache yarn cache
+        uses: actions/cache@v3
+        id: yarn-cache
+        if: steps.build-cache.outputs.cache-hit != 'true'
+        with:
+          path: ${{ steps.yarn-cache-dir-path.outputs.dir }}
+          key: ${{ runner.os }}-${{ env.NODE_VERSION }}-yarn-${{ hashFiles('**/yarn.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-yarn-${{ env.NODE_VERSION }}
+
+      - name: Set up NodeJS
+        if: steps.build-cache.outputs.cache-hit != 'true'
+        uses: actions/setup-node@v3
+        with:
+          node-version: ${{ env.NODE_VERSION }}
+
+      - name: Install dependencies
+        if: steps.build-cache.outputs.cache-hit != 'true'
+        run: yarn install --immutable
+
+      - name: Build test production build
+        if: steps.build-cache.outputs.cache-hit != 'true'
+        run: yarn build:test
+
+      - uses: actions/upload-artifact@master
+        with:
+          name: e2e-build
+          path: |
+            .next
+            !.next/cache
+            !.next/standalone
+
+  end2end:
+    name: Perform E2E Test in ${{ matrix.browser }}
+    needs: build-frontend
+    runs-on: ubuntu-latest
+    container:
+      image: cypress/browsers:node18.12.0-chrome106-ff106
+      options: --user 1001 --shm-size=2g
+    strategy:
+      fail-fast: false
+      matrix:
+        browser: [ 'chrome' ]
+        containers: [ 1, 2, 3, 4, 5 ]
+    steps:
+      - name: Check out repo
+        uses: actions/checkout@v3
+
+      - name: Cache build
+        uses: actions/cache@v3.0.11
+        id: build-cache
+        with:
+          path: .next
+          key: ${{ env.HEAD_COMMIT_HASH }}
+
+      - name: Get yarn cache directory path
+        id: yarn-cache-dir-path
+        run: echo "dir=$(yarn config get cacheFolder)" >> $GITHUB_OUTPUT
+
+      - name: Cache yarn cache
+        uses: actions/cache@v3
+        id: yarn-cache
+        with:
+          path: ${{ steps.yarn-cache-dir-path.outputs.dir }}
+          key: ${{ runner.os }}-${{ env.NODE_VERSION }}-yarn-${{ hashFiles('**/yarn.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-yarn-${{ env.NODE_VERSION }}
+
+      - name: Set up NodeJS
+        if: steps.build-cache.outputs.cache-hit != 'true'
+        uses: actions/setup-node@v3
+        with:
+          node-version: ${{ env.NODE_VERSION }}
+
+      - name: Install dependencies
+        run: yarn install --immutable
+
+      - name: Download built frontend
+        uses: actions/download-artifact@master
+        with:
+          name: e2e-build
+          path: .next
+
+      - name: Run server
+        run: yarn start:ci &
+        env:
+          NODE_ENV: test
+
+      - name: Wait for server
+        run: "sleep 3 && curl --max-time 120 http://127.0.0.1:3001/"
+
+      - name: Run cypress
+        run: "yarn cy:run:${{ matrix.browser }} --record true --parallel --group \"UI - ${{ matrix.browser }}\""
+        env:
+          CYPRESS_RECORD_KEY: ${{ secrets.CYPRESS_RECORD_KEY }}
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+      - uses: actions/upload-artifact@master
+        if: always()
+        with:
+          name: screenshots
+          path: cypress/screenshots

frontend/.github/workflows/lint.yml

@@ -0,0 +1,46 @@
+# SPDX-FileCopyrightText: 2021 The HedgeDoc developers (see AUTHORS file)
+#
+# SPDX-License-Identifier: AGPL-3.0-only
+
+name: lint
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+
+env:
+  NODE_VERSION: 18
+
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+    name: Lints all .ts and .tsx files
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v3
+
+      - name: Get yarn cache directory path
+        id: yarn-cache-dir-path
+        run: echo "dir=$(yarn config get cacheFolder)" >> $GITHUB_OUTPUT
+
+      - name: Cache yarn cache
+        uses: actions/cache@v3
+        id: yarn-cache
+        with:
+          path: ${{ steps.yarn-cache-dir-path.outputs.dir }}
+          key: ${{ runner.os }}-${{ env.NODE_VERSION }}-yarn-${{ hashFiles('**/yarn.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-yarn-${{ env.NODE_VERSION }}
+
+      - name: Set up NodeJS
+        uses: actions/setup-node@v3
+        with:
+          node-version: ${{ env.NODE_VERSION }}
+
+      - name: Install dependencies
+        run: yarn install --immutable
+
+      - name: Lint code
+        run: yarn lint

frontend/.github/workflows/reuse.yml

@@ -0,0 +1,19 @@
+# SPDX-FileCopyrightText: 2021 The HedgeDoc developers (see AUTHORS file)
+#
+# SPDX-License-Identifier: AGPL-3.0-only
+
+name: REUSE Compliance Check
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+
+jobs:
+  reuse:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - name: REUSE Compliance Check
+        uses: fsfe/reuse-action@v1

frontend/.gitignore

@@ -0,0 +1,62 @@
+# SPDX-FileCopyrightText: 2021 The HedgeDoc developers (see AUTHORS file)
+#
+# SPDX-License-Identifier: CC0-1.0
+
+# See https://help.github.com/articles/ignoring-files/ for more about ignoring files.
+
+# dependencies
+/node_modules
+/.pnp
+.pnp.*
+
+# package manager
+.yarn/*
+!.yarn/patches
+!.yarn/plugins
+!.yarn/releases
+!.yarn/sdks
+!.yarn/versions
+
+# testing
+/coverage
+
+# downloaded files during tests with cypress
+/cypress/downloads
+
+# next.js
+/.next/
+/out/
+
+# production
+/build
+
+# misc
+.DS_Store
+*.pem
+
+# debug
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+
+# local env files
+.env.local
+.env.development.local
+.env.test.local
+.env.production.local
+
+# vercel
+.vercel
+
+# netlify
+.netlify
+!.netlify/state.json
+
+# typescript
+*.tsbuildinfo
+
+# IDE
+.idea
+!.idea/dictionaries/hedgedoc.xml
+!.idea/copyright
+!.idea/prettier.xml

frontend/.mailmap

@@ -0,0 +1,8 @@
+Tilman Vatteroth <git@tilmanvatteroth.de>                mrdrogdrog <mr.drogdrog@gmail.com>
+Tilman Vatteroth <git@tilmanvatteroth.de>                mrdrogdrog <tilman.vatteroth@tu-dortmund.de>
+Tilman Vatteroth <git@tilmanvatteroth.de>                Tilman Vatteroth <tilman.vatteroth@tu-dortmund.de>       
+
+Philip Molares <philip.molares@udo.edu>                  Philip Molares <philip@mauricedoepke.de>
+Philip Molares <philip.molares@udo.edu>                  Philip Molares <git@molar.es>
+
+Sheogorath <sheogorath@shivering-isles.com>              Christoph Kern <sheogorath@shivering-isles.com>

frontend/.mailmap.license

@@ -0,0 +1,3 @@
+SPDX-FileCopyrightText: 2021 The HedgeDoc developers (see AUTHORS file)
+
+SPDX-License-Identifier: CC0-1.0

frontend/.netlify/state.json

@@ -0,0 +1,3 @@
+{
+	"siteId": "329450c0-b852-424e-8b75-7441cefb5bea"
+}

frontend/.nvmrc

@@ -0,0 +1 @@
+v18

frontend/.nvmrc.license

@@ -0,0 +1,3 @@
+SPDX-FileCopyrightText: 2021 The HedgeDoc developers (see AUTHORS file)
+
+SPDX-License-Identifier: CC0-1.0

frontend/.prettierignore

@@ -0,0 +1 @@
+node_modules/

frontend/.prettierignore.license

@@ -0,0 +1,4 @@
+SPDX-FileCopyrightText: 2021 The HedgeDoc developers (see AUTHORS file)
+
+SPDX-License-Identifier: CC0-1.0
+

frontend/.prettierrc.json

@@ -0,0 +1,11 @@
+{
+  "parser": "typescript",
+  "singleQuote": true,
+  "jsxSingleQuote": true,
+  "semi": false,
+  "tabWidth": 2,
+  "trailingComma": "none",
+  "bracketSpacing": true,
+  "bracketSameLine": true,
+  "arrowParens": "always"
+}

frontend/.prettierrc.json.license

@@ -0,0 +1,3 @@
+SPDX-FileCopyrightText: 2021 The HedgeDoc developers (see AUTHORS file)
+
+SPDX-License-Identifier: CC0-1.0

frontend/.reuse/dep5

@@ -0,0 +1,60 @@
+Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
+Upstream-Name: react-client
+Upstream-Contact: The HedgeDoc developers <license@hedgedoc.org>
+Source: https://github.com/hedgedoc/react-client
+
+Files: public/public/*
+Copyright: 2021 The HedgeDoc developers (see AUTHORS file)
+License: CC0-1.0
+
+Files: public/icons/*
+Copyright: 2021 The HedgeDoc developers (see AUTHORS file)
+License: LicenseRef-HedgeDoc-Icon-Usage-Guidelines
+
+Files: locales/*
+Copyright: 2021 The HedgeDoc developers (see AUTHORS file)
+License: CC-BY-SA-4.0
+
+Files: public/public/img/highres.jpg
+Copyright: Vincent van Gogh
+License: CC0-1.0
+
+Files: public/robots.txt
+Copyright: 2021 The HedgeDoc developers (see AUTHORS file)
+License: CC0-1.0
+
+Files: .yarnrc.yml
+Copyright: 2021 The HedgeDoc developers (see AUTHORS file)
+License: CC0-1.0
+
+Files: .yarn/**
+Copyright: Yarn contributors
+License: BSD-2-Clause
+
+Files: .gitattributes
+Copyright: 2021 The HedgeDoc developers (see AUTHORS file)
+License: CC0-1.0
+
+Files: .idea/**
+Copyright: 2021 The HedgeDoc developers (see AUTHORS file)
+License: CC0-1.0
+
+Files: netlify.toml
+Copyright: 2021 The HedgeDoc developers (see AUTHORS file)
+License: CC0-1.0
+
+Files: .netlify/*
+Copyright: 2021 The HedgeDoc developers (see AUTHORS file)
+License: CC0-1.0
+
+Files: .github/ISSUE_TEMPLATE/*.md
+Copyright: 2021 The HedgeDoc developers (see AUTHORS file)
+License: CC-BY-SA-4.0
+
+Files: .github/pull_request_template.md
+Copyright: 2021 The HedgeDoc developers (see AUTHORS file)
+License: CC-BY-SA-4.0
+
+Files: **/__snapshots__/*.snap
+Copyright: 2022 The HedgeDoc developers (see AUTHORS file)
+License: AGPL-3.0-only

frontend/.yarnrc.yml

@@ -0,0 +1,7 @@
+nodeLinker: node-modules
+
+plugins:
+  - path: .yarn/plugins/@yarnpkg/plugin-workspace-tools.cjs
+    spec: "@yarnpkg/plugin-workspace-tools"
+
+yarnPath: .yarn/releases/yarn-3.2.4.cjs

frontend/AUTHORS.md

@@ -0,0 +1,19 @@
+<!--
+SPDX-FileCopyrightText: 2021 The HedgeDoc developers (see AUTHORS file)
+
+SPDX-License-Identifier: CC-BY-SA-4.0
+-->
+
+<!--
+This file lists all individuals having contributed content to the repository.
+To regenerate, use `git log --format='%aN <%aE>' | LC_ALL=C.UTF-8 sort -uf`.
+-->
+
+# Authors
+
+- Erik Michelson <github@erik.michelson.eu>
+- Henrik Hüttemann <admin@herh.de>
+- Jakob Klepp <jakob-github@truh.in>
+- Philip Molares <philip.molares@udo.edu>
+- Christoph Kern <sheogorath@shivering-isles.com>
+- Tilman Vatteroth <git@tilmanvatteroth.de>

frontend/CHANGELOG.md

@@ -0,0 +1,105 @@
+<!--
+SPDX-FileCopyrightText: 2021 The HedgeDoc developers (see AUTHORS file)
+
+SPDX-License-Identifier: CC-BY-SA-4.0
+-->
+
+# Changelog
+
+## [Unreleased]
+
+### Deprecations
+- This version of HedgeDoc is the last version, that supports the following short code syntax for embedding content. The
+  new way to embed this external content is to put the plain link into a single line of the document.
+    - `{%youtube someid %}` -> https://youtube.com/watch?v=someid
+    - `{%vimeo 123456789 %}` -> https://vimeo.com/123456789
+    - `{%gist user/12345 %}` -> https://gist.github.com/user/12345
+    - `{%slideshare user/my-awesome-presentation %}` -> Embedding removed
+    - `{%speakerdeck foobar %}` -> Embedding removed
+    - `{%pdf https://example.org/example-pdf.pdf %}` -> Embedding removed
+- The use of `sequence` as code block language ([Why?](https://github.com/hedgedoc/react-client/issues/488#issuecomment-683262875))
+- Comma-separated definition of tags in the yaml-frontmatter
+
+### Removed
+
+- SlideShare embedding
+    - If a legacy embedding code is detected, then it will show the link to the presentation instead of the embedded
+      presentation.
+- Speakerdeck embedding
+    - If a legacy embedding code is detected, then it will show the link to the presentation instead of the embedded
+      presentation.
+- PDF embedding (See [#959](https://github.com/hedgedoc/react-client/issues/959))
+    - If a legacy embedding code is detected, then it will show the link to the pdf instead.
+- We are now using `highlight.js` instead of `highlight.js` + `prism.js` for code highlighting. Check out
+  the [highlight.js demo page](https://highlightjs.org/static/demo/) to see which languages are supported. The
+  highlighting for following languages isn't supported by `highlight.js`:
+    - tiddlywiki
+    - mediawiki
+    - jsx
+- Alternative anchor URL formats
+- Import HTML and convert to Markdown
+- Import content from a url
+- F9 shortcut to sort lines
+- Highlight.JS language support for `1c` was removed.
+- Support for tag definitions in headings
+
+### Added
+
+- A new table view for the history (besides the card view)
+- Better support for RTL-languages (and LTR-content in a RTL-page)
+- Users may now change their display name and password (only email accounts) on the new profile page
+- Highlighted code blocks can now use line wrapping and line numbers at once
+- Notes may now be deleted directly from the history page
+- HedgeDoc instances can be branded either with a '@ \<custom string\>' or '@ \<custom logo\>' after the HedgeDoc logo and text
+- Images will be loaded via proxy if an image proxy is configured in the backend
+- The toolbar includes an emoji and fork-awesome icon picker.
+- Collapsible blocks can be added via a toolbar button or via autocompletion of "<details"
+- Added shortcodes for [fork-awesome icons](https://forkaweso.me/Fork-Awesome/icons/) (e.g. `:fa-picture-o:`)
+- The code button now adds code fences even if the user selected nothing beforehand
+- Code blocks with 'csv' as language render as tables.
+- All images can be clicked to show them in full screen.
+- Code blocks have a 'Copy code to clipboard' button.
+- Code blocks with 'vega-lite' as language are rendered as [vega-lite diagrams](https://vega.github.io/vega-lite/examples/).
+- Markdown files can be imported into an existing note directly from the editor.
+- The table button in the toolbar opens an overlay where the user can choose the number of columns and rows.
+- A toggle in the editor preferences for turning ligatures on and off.
+- Easier possibility to share notes via native share-buttons on supported devices.
+- Surround selected text with a link via shortcut (ctrl+k or cmd+k).
+- A sidebar for menu options
+- Improved security by wrapping the markdown rendering into an iframe.
+- The intro page content can be changed by editing `public/intro.md`.
+- When pasting tables (e.g. from LibreOffice Calc or MS Excel) they get reformatted to markdown tables.
+- The history page supports URL parameters that allow bookmarking of a specific search of tags filter.
+- Users can change the pinning state of a note directly from the editor.
+- Note information dialog containing word count, revision count, last editor and creation time.
+- Image tags with placeholder urls (`https://`) will be replaced with a placeholder frame.
+- Images that are currently uploading will be rendered as "uploading".
+- Code blocks with `plantuml` as language are rendered as [PlantUML](https://plantuml.com/) diagram using a configured render server.
+- File based motd that supports markdown without html.
+- New notes can be created with a pre-given content when accessing `/new?content=Example%20content`.
+
+### Changed
+
+- The sign-in/sign-up functions are now on a separate page
+- The email sign-in/registration does not require an email address anymore but uses a username
+- The history shows both the entries saved in LocalStorage and the entries saved on the server together
+- The gist embedding uses a click-shield, like vimeo and youtube
+- HTML-Iframes are capsuled in click-shields
+- Use [Twemoji](https://twemoji.twitter.com/) as icon font
+- The `[name=...]`, `[time=...]` and `[color=...]` tags may now be used anywhere in the document and not just inside of blockquotes and lists.
+- The <i class="fa fa-picture-o"/> (add image) and <i class="fa fa-link"/> (add link) toolbar buttons put selected links directly in the `()` instead of the `[]` part of the generated markdown.
+- The help dialog has multiple tabs, and is a bit more organized.
+- Use KaTeX instead of MathJax. ([Why?](https://github.com/hedgedoc/react-client/issues/495))
+- The dark-mode is also applied to the read-only-view and can be toggled from there.
+- Access tokens for the CLI and 3rd-party-clients can be managed in the user profile.
+- Change editor font to "Fira Code"
+- Note tags can be set as yaml-array in frontmatter.
+- If only one external login provider is configured, the sign-in button will directly link to it.
+- Links in Gist-Frames work only if explicitly opened in new tabs.
+
+---
+
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).

frontend/CODE_OF_CONDUCT.md

@@ -0,0 +1,43 @@
+<!--
+SPDX-FileCopyrightText: 2021 The HedgeDoc developers (see AUTHORS file)
+
+SPDX-License-Identifier: CC-BY-SA-4.0
+-->
+
+Contributor Code of Conduct
+===
+
+As contributors and maintainers of this project, and in the interest of fostering an open and
+welcoming community, we pledge to respect all people who contribute through reporting issues,
+posting feature requests, updating documentation, submitting pull requests or patches, and other
+activities.
+
+We are committed to making participation in this project a harassment-free experience for everyone,
+regardless of level of experience, gender, gender identity and expression, sexual orientation,
+disability, personal appearance, body size, race, ethnicity, age, religion, or nationality.
+
+Examples of unacceptable behavior by participants include:
+
+* The use of sexualized language or imagery
+* Personal attacks
+* Trolling or insulting/derogatory comments
+* Public or private harassment
+* Publishing other's private information, such as physical or electronic addresses, without explicit
+  permission
+* Other unethical or unprofessional conduct.
+
+Project maintainers have the right and responsibility to remove, edit, or reject comments, commits,
+code, wiki edits, issues, and other contributions that are not aligned to this Code of Conduct. By
+adopting this Code of Conduct, project maintainers commit themselves to fairly and consistently
+applying these principles to every aspect of managing this project. Project maintainers who do not
+follow or enforce the Code of Conduct may be permanently removed from the project team.
+
+This code of conduct applies both within project spaces and in public spaces when an individual is
+representing the project or its community.
+
+Instances of abusive, harassing, or otherwise unacceptable behavior may be reported by opening an
+issue or contacting one or more of the project maintainers.
+
+This Code of Conduct is adapted from the [Contributor Covenant](http://contributor-covenant.org),
+version 1.2.0, available at
+[http://contributor-covenant.org/version/1/2/0/](http://contributor-covenant.org/version/1/2/0/)

frontend/CONTRIBUTING.md

@@ -0,0 +1,209 @@
+<!--
+SPDX-FileCopyrightText: 2021 The HedgeDoc developers (see AUTHORS file)
+
+SPDX-License-Identifier: CC-BY-SA-4.0
+-->
+
+## How to contribute to HedgeDoc react-client
+
+Thanks for your interest in contributing. Here are some common scenarios for what you may want to contribute to.
+
+#### Do you have questions about the project?
+
+* Feel free to post your question on our [Discourse][discourse] or join our [Matrix Support Channel][matrix-support].
+
+#### Did you find a bug?
+
+* **Ensure the bug wasn't already reported** by searching on GitHub under [Issues][issues].
+
+* If you're unable to find an open issue addressing the problem, [open a new one][new_issue]. Be sure to use one of the templates we provide if your request applies to them. If not, use the 'Question / Other' template.
+
+#### Did you write a patch that fixes a bug?
+
+* Open a new GitHub pull request with the patch.
+
+* Ensure the PR description is precise about the problem and your solution. Just fill out our template. That should cover the most important information.
+
+#### Do you intend to add a new feature or change an existing one?
+
+* Suggest your idea in the [HedgeDoc Dev Channel][matrix-dev] and start writing code. Our maintainers and other project developers can provide useful details about the architecture and show you relevant issues and discussions.
+
+#### Do you want to work on translations?
+
+If you want to improve a translation or add a new translation altogether, we handle those via [POEditor][poeditor].
+
+HedgeDoc is a volunteer effort. We encourage you to pitch in and to help us making this project even better.
+
+Thanks! :heart: :heart: :heart:
+
+## Certificate of Origin
+
+By contributing to this project you agree to the [Developer Certificate of
+Origin (DCO)](developer-certificate-of-origin.txt). This document was created by the Linux Kernel community and is a
+simple statement that you, as a contributor, have the legal right to make the
+contribution.
+The DCO is a legally binding statement, please [read it carefully](developer-certificate-of-origin.txt).
+
+If you can certify it, then just add a line to every git commit message:
+
+```
+  Signed-off-by: Jane Doe <jane.doe@example.org>
+```
+
+Use your real name (sorry, no pseudonyms or anonymous contributions).
+
+If you set your `user.name` and `user.email` git configs, you can sign your commit automatically with `git commit -s`.
+You can also use git [aliases](https://git-scm.com/book/tr/v2/Git-Basics-Git-Aliases) like `git config --global alias.ci 'commit -s'`.
+Now you can commit with `git ci` and the commit will be signed.
+
+## Code Style
+
+Most of the code style is enforced by [prettier](https://prettier.io/) and our [eslint](https://eslint.org) configuration.
+If your IDE doesn't support integration of prettier and/or eslint you can use the npm tasks `lint` and `format` to check your code style.
+
+For both npm tasks, there is also an additional `:fix` task. This will try to fix the code to the best of either tools ability.
+
+### Number of lines
+
+Try to keep the files as short as possible while keeping the context between the code parts by
+- splitting your code into multiple files. Especially react components can and should be separated into atomic components and custom hooks.
+- avoiding repetition.
+- extracting types and interfaces into `.d.ts` files.
+
+### Function Style
+
+We prefer lambda functions over the `function` keyword. Simple functions, that return a value can be shortened to one-liners.
+
+:+1: Good:
+```typescript=
+const addTwo = (x: number): number => x + 2
+```
+
+:-1: Bad:
+```typescript=
+function addTwo (x: number): number {
+    return x + 2
+}
+```
+
+### Function naming
+
+Names of functions should
+- be as short as possible while clearly communicating their purpose.
+- not include technical details, if not necessary.
+- avoid abbreviations.
+
+:+1: Good:
+```typescript=
+const addTwo = (x: number): number => x + 2
+```
+
+:-1: Bad:
+```typescript=
+const doStuffWithX = (x: number): number => x + 2
+```
+
+:-1: Bad:
+```typescript=
+const incrementXTwoTimesButNotRecursive = (x: number): number => x + 2
+```
+
+:-1: Bad:
+```typescript=
+const clcX = (x: number): number => x + 2
+```
+
+
+### Documentation of functions
+
+To make the code as clear as possible to everyone, who will try to understand it, every function must have an [ESDoc](https://esdoc.org/).
+
+Please make sure that your documenation can be read in a standard text editor (hard line breaks at ~120 characters, etc.).
+
+The documentation must
+- explain what the function does. If the explanation is longer than one line, then write a short introdoctory first line, followed by a break and then the longer explanation.
+- contain every parameter with the `@param name explaination` annotation, that explains the purpose of the parameter.
+- contain a `@return description` annotation if the return type isn't `void`, that explains the meaning of the value.
+- contain `@throws ErrorClass description` annotations if the function throws runtime errors or doesn't catch errors from other method calls.
+- contain a blank line between the description and the annotation block.
+
+The described annotations must appear in this order: `@param`, `@return`, `@throws`
+
+Example:
+```typescript=
+/**
+ * Calculates the divison of the given divisor and divident.
+ *
+ * @param divisor The divisor for the calculation
+ * @param divident The divident for the calculation
+ * @return The calculated division.
+ * @throws Error if the divident is zero.
+ */
+const divide = (divisor: number, divident: number): number => {
+    if (divident === 0) {
+        throw new Error("Can not divide by zero")
+    }
+    return divisor / divident
+}
+```
+
+### Documentation of types and interfaces
+
+Every exported type and interface must have an [ESDoc](https://esdoc.org/). No special annotations are needed.
+
+### React components
+
+React components
+- must be functional. Use the `React.FC` type.
+- can omit the `@return` annotation in the ESDoc if it returns always the same React DOM.
+- should use the [`useCallback`](https://reactjs.org/docs/hooks-reference.html#usecallback) hook where possible. Don't use inline functions.
+- should use [custom hooks](https://reactjs.org/docs/hooks-custom.html) to extract long functions to reduce the number of lines in the component file.
+- must be placed in files that have the same name as the component, but in [kebab-case](https://stackoverflow.com/a/17820138). This file can also contain the interface for the properties.
+- should be named in [PascalCase](https://en.wikipedia.org/wiki/Pascal_case).
+
+
+### Logging
+
+- Don't log directly to the console. Use our logging class `Logger` in "src/utils".
+- Create one instance of `Logger` per file. Don't pass or share the instances.
+- The first argument of the constructor is the scope. Use the name of the class or component whose behaviour you want to log or choose an explanatory name.
+- If you want to add a sub scope (because e.g. you have two components that are similar or are used together, like the sub-classes of the iframe communicator), separate the main and sub scope with " > ".
+- Scopes should be upper camel case.
+- Log messages should never start with a lowercase letter.
+- Log messages should never end with a colon or white space.
+
+#### Example File: `increment-number-button.tsx`:
+```typescript=
+
+/**
+ * Properties for the {@link IncrementNumberButton}
+ */
+export interface IncrementNumberButtonProps {
+    prefix: string
+}
+
+const logger = new Logger("IncrementNumberButton")
+
+/**
+ * Shows a button that contains a text and a number that gets incremented each time you click it.
+ *
+ * @param prefix A text that should be added before the number.
+ */
+export const IncrementNumberButton: React.FC<IncrementNumberButtonProps> = ({ prefix }) => {
+    const [counter, setCounter] = useState(0)
+
+    const incrementCounter = useCallback(() => {
+        setCounter((lastCounter) => lastCounter + 1)
+        logger.info("Increased counter")
+    }, [])
+
+    return <button onClick={incrementCounter}>{prefix}: {counter}</button>
+}
+```
+
+[issues]: https://github.com/hedgedoc/react-client/issues
+[new_issue]: https://github.com/hedgedoc/react-client/issues/new/choose
+[matrix-support]: https://matrix.to/#/#hedgedoc:matrix.org
+[matrix-dev]: https://matrix.to/#/#hedgedoc-dev:matrix.org
+[discourse]: https://community.hedgedoc.org/
+[poeditor]: https://translate.hedgedoc.org/

frontend/Dockerfile

@@ -0,0 +1,35 @@
+# SPDX-FileCopyrightText: 2021 The HedgeDoc developers (see AUTHORS file)
+#
+# SPDX-License-Identifier: CC-BY-SA-4.0
+
+# BUILD
+FROM node:18-alpine AS builder
+ENV NODE_ENV=production
+ENV NEXT_TELEMETRY_DISABLED=1
+ARG BUILD_VERSION=CLIENT_VERSION_MISSING
+
+WORKDIR /app
+COPY . ./
+RUN rm -rf public/public && \
+    rm -rf src/pages/api && \
+    yarn install --immutable && \
+    sed -i "s/CLIENT_VERSION_MISSING/${BUILD_VERSION}/" src/version.json && \
+    yarn build
+
+# RUNNER
+FROM node:18-alpine
+ENV NODE_ENV=production
+ENV NEXT_TELEMETRY_DISABLED=1
+
+WORKDIR /app
+
+COPY --from=builder /app/next.config.js ./
+COPY --from=builder /app/public ./public
+COPY --from=builder --chown=node:node /app/.next/static ./.next/static
+COPY --from=builder --chown=node:node /app/.next/standalone ./
+
+USER node
+
+ENV PORT 3001
+EXPOSE 3001/tcp
+CMD ["node", "server.js"]

frontend/LICENSE

@@ -0,0 +1,603 @@
+GNU AFFERO GENERAL PUBLIC LICENSE
+Version 3, 19 November 2007
+
+Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
+
+Everyone is permitted to copy and distribute verbatim copies of this license
+document, but changing it is not allowed.
+
+                            Preamble
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+
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+(or copies made from those copies), or (b) primarily for and in connection
+with specific products or compilations that contain the covered work, unless
+you entered into that arrangement, or that patent license was granted, prior
+to 28 March 2007.
+
+Nothing in this License shall be construed as excluding or limiting any implied
+license or other defenses to infringement that may otherwise be available
+to you under applicable patent law.
+
+12. No Surrender of Others' Freedom.
+
+If conditions are imposed on you (whether by court order, agreement or otherwise)
+that contradict the conditions of this License, they do not excuse you from
+the conditions of this License.  If you cannot convey a covered work so as
+to satisfy simultaneously your obligations under this License and any other
+pertinent obligations, then as a consequence you may
+not convey it at all.  For example, if you agree to terms that obligate you
+to collect a royalty for further conveying from those to whom you convey the
+Program, the only way you could satisfy both those terms and this License
+would be to refrain entirely from conveying the Program.
+
+13. Remote Network Interaction; Use with the GNU General Public License.
+
+Notwithstanding any other provision of this License, if you modify the Program,
+your modified version must prominently offer all users interacting with it
+remotely through a computer network (if your version supports such interaction)
+an opportunity to receive the Corresponding Source of your version by providing
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+
+Notwithstanding any other provision of this License, you have permission to
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+governed by version 3 of the GNU General Public License.
+
+14. Revised Versions of this License.
+
+The Free Software Foundation may publish revised and/or new versions of the
+GNU Affero General Public License from time to time.  Such new versions will
+be similar in spirit to the present version, but may differ in detail to address
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+
+Each version is given a distinguishing version number.  If the Program specifies
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+
+If the Program specifies that a proxy can decide which future versions of
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+
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+holder as a result of your choosing to follow a later version.
+
+15. Disclaimer of Warranty.
+
+THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE
+LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR
+OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER
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+AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU.  SHOULD THE
+PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR
+OR CORRECTION.
+
+16. Limitation of Liability.
+
+IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING WILL
+ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS THE PROGRAM
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+
+17. Interpretation of Sections 15 and 16.
+
+If the disclaimer of warranty and limitation of liability provided above cannot
+be given local legal effect according to their terms, reviewing courts shall
+apply local law that most closely approximates an absolute waiver of all civil
+liability in connection with the Program, unless a warranty or assumption
+of liability accompanies a copy of the Program in return for a fee.
+
+END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+If you develop a new program, and you want it to be of the greatest possible
+use to the public, the best way to achieve this is to make it free software
+which everyone can redistribute and change under these terms.
+
+To do so, attach the following notices to the program.  It is safest to attach
+them to the start of each source file to most effectively state the exclusion
+of warranty; and each file should have at least the "copyright" line and a
+pointer to where the full notice is found.
+
+     <one line to give the program's name and a brief idea of what it does.>
+     Copyright (C) <year>  <name of author>
+
+This program is free software: you can redistribute it and/or modify it under
+the terms of the GNU Affero General Public License as published by the Free
+Software Foundation, either version 3 of the License, or (at your option)
+any later version.
+
+This program is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Affero General Public License for more
+details.
+
+You should have received a copy of the GNU Affero General Public License along
+with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+If your software can interact with users remotely through a computer network,
+you should also make sure that it provides a way for users to get its source.
+For example, if your program is a web application, its interface could display
+a "Source" link that leads users to an archive of the code.  There are many
+ways you could offer source, and different solutions will be better for different
+programs; see section 13 for the specific requirements.
+
+You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary. For
+more information on this, and how to apply and follow the GNU AGPL, see <http://www.gnu.org/licenses/>.

frontend/LICENSES/AGPL-3.0-only.txt

@@ -0,0 +1,603 @@
+GNU AFFERO GENERAL PUBLIC LICENSE
+Version 3, 19 November 2007
+
+Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
+
+Everyone is permitted to copy and distribute verbatim copies of this license
+document, but changing it is not allowed.
+
+                            Preamble
+
+The GNU Affero General Public License is a free, copyleft license for software
+and other kinds of works, specifically designed to ensure cooperation with
+the community in the case of network server software.
+
+The licenses for most software and other practical works are designed to take
+away your freedom to share and change the works.  By contrast, our General
+Public Licenses are intended to guarantee your freedom to share and change
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+
+When we speak of free software, we are referring to freedom, not price.  Our
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+
+Developers that use our General Public Licenses protect your rights with two
+steps: (1) assert copyright on the software, and (2) offer you this License
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+
+A secondary benefit of defending all users' freedom is that improvements made
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+are heartened and encouraged by the resulting cooperation.  However, in the
+case of software used on network servers, this result may fail to come about.
+The GNU General Public License permits making a modified version and letting
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+the public.
+
+The GNU Affero General Public License is designed specifically to ensure that,
+in such cases, the modified source code becomes available to the community.
+It requires the operator of a network server to provide the source code of
+the modified version running there to the users of that server.  Therefore,
+public use of a modified version, on a publicly accessible server, gives the
+public access to the source code of the modified version.
+
+An older license, called the Affero General Public License and published by
+Affero, was designed to accomplish similar goals.  This is a different license,
+not a version of the Affero GPL, but Affero has released a new version of
+the Affero GPL which permits relicensing under this license.
+
+The precise terms and conditions for copying, distribution and modification
+follow.
+
+                       TERMS AND CONDITIONS
+
+0. Definitions.
+
+"This License" refers to version 3 of the GNU Affero General Public License.
+
+"Copyright" also means copyright-like laws that apply to other kinds of works,
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+The "source code" for a work means the preferred form of the work for making
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+All rights granted under this License are granted for the term of copyright
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+you disclaim any intention to limit operation or modification of the work
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+You may convey verbatim copies of the Program's source code as you receive
+it, in any medium, provided that you conspicuously and appropriately publish
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+You may charge any price or no price for each copy that you convey, and you
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+c) You must license the entire work, as a whole, under this License to anyone
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+You may convey a covered work in object code form under the terms of sections
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+
+When you convey a copy of a covered work, you may at your option remove any
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+
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+
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frontend/LICENSES/BSD-2-Clause.txt

@@ -0,0 +1,25 @@
+BSD 2-Clause License
+
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frontend/LICENSES/CC-BY-SA-4.0.txt

@@ -0,0 +1,349 @@
+Creative Commons Attribution-ShareAlike 4.0 International
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frontend/LICENSES/CC0-1.0.txt

@@ -0,0 +1,121 @@
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+ vi. database rights (such as those arising under Directive 96/9/EC of the
+     European Parliament and of the Council of 11 March 1996 on the legal
+     protection of databases, and under any national implementation
+     thereof, including any amended or successor version of such
+     directive); and
+vii. other similar, equivalent or corresponding rights throughout the
+     world based on applicable law or treaty, and any national
+     implementations thereof.
+
+2. Waiver. To the greatest extent permitted by, but not in contravention
+of, applicable law, Affirmer hereby overtly, fully, permanently,
+irrevocably and unconditionally waives, abandons, and surrenders all of
+Affirmer's Copyright and Related Rights and associated claims and causes
+of action, whether now known or unknown (including existing as well as
+future claims and causes of action), in the Work (i) in all territories
+worldwide, (ii) for the maximum duration provided by applicable law or
+treaty (including future time extensions), (iii) in any current or future
+medium and for any number of copies, and (iv) for any purpose whatsoever,
+including without limitation commercial, advertising or promotional
+purposes (the "Waiver"). Affirmer makes the Waiver for the benefit of each
+member of the public at large and to the detriment of Affirmer's heirs and
+successors, fully intending that such Waiver shall not be subject to
+revocation, rescission, cancellation, termination, or any other legal or
+equitable action to disrupt the quiet enjoyment of the Work by the public
+as contemplated by Affirmer's express Statement of Purpose.
+
+3. Public License Fallback. Should any part of the Waiver for any reason
+be judged legally invalid or ineffective under applicable law, then the
+Waiver shall be preserved to the maximum extent permitted taking into
+account Affirmer's express Statement of Purpose. In addition, to the
+extent the Waiver is so judged Affirmer hereby grants to each affected
+person a royalty-free, non transferable, non sublicensable, non exclusive,
+irrevocable and unconditional license to exercise Affirmer's Copyright and
+Related Rights in the Work (i) in all territories worldwide, (ii) for the
+maximum duration provided by applicable law or treaty (including future
+time extensions), (iii) in any current or future medium and for any number
+of copies, and (iv) for any purpose whatsoever, including without
+limitation commercial, advertising or promotional purposes (the
+"License"). The License shall be deemed effective as of the date CC0 was
+applied by Affirmer to the Work. Should any part of the License for any
+reason be judged legally invalid or ineffective under applicable law, such
+partial invalidity or ineffectiveness shall not invalidate the remainder
+of the License, and in such case Affirmer hereby affirms that he or she
+will not (i) exercise any of his or her remaining Copyright and Related
+Rights in the Work or (ii) assert any associated claims and causes of
+action with respect to the Work, in either case contrary to Affirmer's
+express Statement of Purpose.
+
+4. Limitations and Disclaimers.
+
+ a. No trademark or patent rights held by Affirmer are waived, abandoned,
+    surrendered, licensed or otherwise affected by this document.
+ b. Affirmer offers the Work as-is and makes no representations or
+    warranties of any kind concerning the Work, express, implied,
+    statutory or otherwise, including without limitation warranties of
+    title, merchantability, fitness for a particular purpose, non
+    infringement, or the absence of latent or other defects, accuracy, or
+    the present or absence of errors, whether or not discoverable, all to
+    the greatest extent permissible under applicable law.
+ c. Affirmer disclaims responsibility for clearing rights of other persons
+    that may apply to the Work or any use thereof, including without
+    limitation any person's Copyright and Related Rights in the Work.
+    Further, Affirmer disclaims responsibility for obtaining any necessary
+    consents, permissions or other rights required for any use of the
+    Work.
+ d. Affirmer understands and acknowledges that Creative Commons is not a
+    party to this document and has no duty or obligation with respect to
+    this CC0 or use of the Work.

frontend/LICENSES/LicenseRef-DCO.txt

@@ -0,0 +1,2 @@
+Everyone is permitted to copy and distribute verbatim copies of this
+license document, but changing it is not allowed.

frontend/LICENSES/LicenseRef-HedgeDoc-Icon-Usage-Guidelines.txt

@@ -0,0 +1,33 @@
+# HedgeDoc Logo Usage Guidelines
+
+## The HedgeDoc Logo
+
+“The HedgeDoc Logo” encompasses all copyrighted graphic artworks and variants at https://github.com/hedgedoc/hedgedoc-logo.
+
+## Graphic guidelines
+
+All usages and modifications to The HedgeDoc Logo must fulfill the [graphic guideline](https://github.com/hedgedoc/hedgedoc-logo/blob/main/Graphic-Guidlines/Graphic-Guidlines_v.1.0.pdf)
+
+## Usage that *does not* require permission
+
+1. You may use The HedgeDoc Logo to identify your HedgeDoc installation if you have not made any modifications to HedgeDoc itself. You are of course allowed to make modifications, but then you MUST remove our Logo as it is no longer HedgeDoc. Modifications to HedgeDoc here are defined as those which would would require you to provide them in source form to any user who asks under the license of the AGPLv3.
+
+2. Conferences and events are a big part of every open source community, therefore you may use The HedgeDoc Logo to promote the project at conferences and events.
+
+3. You may use The HedgeDoc Logo to enrich publications about the HedgeDoc project.
+
+4. You may use The HedgeDoc Logo to produce utensils such as t-shirts, hats, bags, jackets, sweatshirts, mugs, and desktop wallpapers to identify yourself with the project and give them to your friends and family.
+
+## Usage that *does* require permission
+
+1. To ensure that merchandise benefits the community, you may not use The HedgeDoc Logo without explicit permission to sell HedgeDoc merchandise.
+
+2. To ensure consistent quality of packaging and to reduce confusion, you may not use The HedgeDoc Logo without explicit permission when distributing repackaged or preinstalled versions of HedgeDoc.
+
+3. To make sure that online communities represent the project properly, you may not use The HedgeDoc Logo without explicit permission to organise or identify online communities of any kind. If you want to join an online community about HedgeDoc join our Matrix room [#hedgedoc:matrix.org](https://matrix.to/#/#hedgedoc:matrix.org).
+
+## Contact us
+
+You have questions about the terms or are unsure if your usage needs an explicit permission? You just want to chat? Contact us on [Matrix](https://matrix.to/#/#hedgedoc:matrix.org).
+
+But be aware, explicit permission can only be granted via [E-Mail](mailto:logo@hedgedoc.org).

frontend/LICENSES/MIT.txt

@@ -0,0 +1,20 @@
+MIT License
+
+Copyright (c) <year> <copyright holders>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is furnished
+to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS
+OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
+OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

frontend/LICENSES/OFL-1.1.txt

@@ -0,0 +1,84 @@
+SIL OPEN FONT LICENSE
+
+Version 1.1 - 26 February 2007
+
+PREAMBLE
+
+The goals of the Open Font License (OFL) are to stimulate worldwide development
+of collaborative font projects, to support the font creation efforts of academic
+and linguistic communities, and to provide a free and open framework in which
+fonts may be shared and improved in partnership with others.
+
+The OFL allows the licensed fonts to be used, studied, modified and redistributed
+freely as long as they are not sold by themselves. The fonts, including any
+derivative works, can be bundled, embedded, redistributed and/or sold with
+any software provided that any reserved names are not used by derivative works.
+The fonts and derivatives, however, cannot be released under any other type
+of license. The requirement for fonts to remain under this license does not
+apply to any document created using the fonts or their derivatives.
+
+DEFINITIONS
+
+"Font Software" refers to the set of files released by the Copyright Holder(s)
+under this license and clearly marked as such. This may include source files,
+build scripts and documentation.
+
+"Reserved Font Name" refers to any names specified as such after the copyright
+statement(s).
+
+"Original Version" refers to the collection of Font Software components as
+distributed by the Copyright Holder(s).
+
+"Modified Version" refers to any derivative made by adding to, deleting, or
+substituting — in part or in whole — any of the components of the Original
+Version, by changing formats or by porting the Font Software to a new environment.
+
+"Author" refers to any designer, engineer, programmer, technical writer or
+other person who contributed to the Font Software.
+
+PERMISSION & CONDITIONS
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of the Font Software, to use, study, copy, merge, embed, modify, redistribute,
+and sell modified and unmodified copies of the Font Software, subject to the
+following conditions:
+
+1) Neither the Font Software nor any of its individual components, in Original
+or Modified Versions, may be sold by itself.
+
+2) Original or Modified Versions of the Font Software may be bundled, redistributed
+and/or sold with any software, provided that each copy contains the above
+copyright notice and this license. These can be included either as stand-alone
+text files, human-readable headers or in the appropriate machine-readable
+metadata fields within text or binary files as long as those fields can be
+easily viewed by the user.
+
+3) No Modified Version of the Font Software may use the Reserved Font Name(s)
+unless explicit written permission is granted by the corresponding Copyright
+Holder. This restriction only applies to the primary font name as presented
+to the users.
+
+4) The name(s) of the Copyright Holder(s) or the Author(s) of the Font Software
+shall not be used to promote, endorse or advertise any Modified Version, except
+to acknowledge the contribution(s) of the Copyright Holder(s) and the Author(s)
+or with their explicit written permission.
+
+5) The Font Software, modified or unmodified, in part or in whole, must be
+distributed entirely under this license, and must not be distributed under
+any other license. The requirement for fonts to remain under this license
+does not apply to any document created using the Font Software.
+
+TERMINATION
+
+This license becomes null and void if any of the above conditions are not met.
+
+DISCLAIMER
+
+THE FONT SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF COPYRIGHT, PATENT,
+TRADEMARK, OR OTHER RIGHT. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE
+FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, INCLUDING ANY GENERAL, SPECIAL,
+INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, WHETHER IN AN ACTION OF CONTRACT,
+TORT OR OTHERWISE, ARISING FROM, OUT OF THE USE OR INABILITY TO USE THE FONT
+SOFTWARE OR FROM OTHER DEALINGS IN THE FONT SOFTWARE.

frontend/README.md

@@ -0,0 +1,94 @@
+<!--
+SPDX-FileCopyrightText: 2021 The HedgeDoc developers (see AUTHORS file)
+
+SPDX-License-Identifier: CC-BY-SA-4.0
+-->
+
+# HedgeDoc - React Client
+
+![test, build](https://github.com/hedgedoc/react-client/workflows/test,%20build/badge.svg)
+![e2e](https://github.com/hedgedoc/react-client/workflows/e2e/badge.svg)
+![lint](https://github.com/hedgedoc/react-client/workflows/lint/badge.svg)
+[![Language grade: JavaScript](https://img.shields.io/lgtm/grade/javascript/g/hedgedoc/react-client.svg?logo=lgtm&logoWidth=18)](https://lgtm.com/projects/g/hedgedoc/react-client/context:javascript)
+[![Total alerts](https://img.shields.io/lgtm/alerts/g/hedgedoc/react-client.svg?logo=lgtm&logoWidth=18)](https://lgtm.com/projects/g/hedgedoc/react-client/alerts/)
+
+This is the new, improved and better looking frontend for HedgeDoc 2.0.
+Our goal is to recreate the current frontend in react and to improve it.
+
+## UI Test
+
+Curious about the new look and feel? We provide a demo of the new UI on [hedgedoc.dev](https://hedgedoc.dev). This
+version uses mocked data and has no data persistence.
+
+The UI test is hosted by [netlify](https://netlify.com). Please check
+their [privacy policy](https://netlify.com/privacy) as well as [ours](https://hedgedoc.org/privacy-policy).
+
+## Preparation
+
+You need at least Node 14 (we recommend Node 18) and [yarn](https://yarnpkg.com/).
+You MUST use yarn! There is no support for npm.
+
+1. Clone this repo (e.g. `git clone https://github.com/hedgedoc/react-client.git hedgedoc-react-client`)
+2. Go inside the repo (e.g. `cd hedgedoc-react-client`)
+3. Run `yarn install`
+
+## Development mode
+
+To start the development mode run `yarn run dev`. If not configured otherwise the development mode will run in mock-mode which
+emulates a hedgedoc backend.
+If you want to use the development with a real hedgedoc backend then run `yarn run dev:for-real-backend` instead.
+The app should run now and be available under [http://localhost:3001](http://localhost:3001) in your browser.
+In development mode the app will autoload changes you make to the code.
+
+## Production mode
+
+Use `yarn build` to build the app in production mode and save it into the `.next` folder. The production build is minimized
+and optimized for best performance. Don't edit them by hand!
+
+You can run the production build using the built-in server with `yarn start`.
+You MUST provide the environment variable `HD_EDITOR_BASE_URL` with protocol, domain and (if needed) path (
+e.g. `http://127.0.0.1:3001/`) so the app knows under which URL it is available in the browser.
+Optionally you can also provide `HD_RENDERER_BASE_URL` if the renderer should use another domain than the editor. This is
+recommended for security reasons but not mandatory.
+
+### Production mock build
+
+It is also possible to create a production build that uses the emulated backend by using `yarn build:mock`.
+
+## Using to backend and frontend together
+
+To use backend and frontend together you'll need a reverse proxy that combines both services under one URL origin.
+We provide a configuration for [caddy](https://caddyserver.com/) in the directory `dev-reverse-proxy`.
+
+1. Make sure that the backend is running on port `3000` (which is the default), and that `HD_DOMAIN` is set
+   to `http://localhost:8080`.
+2. Start the frontend by using either running `yarn dev:for-real-backend` or by running a production build
+   with `HD_EDITOR_BASE_URL` set to `http://localhost:8080/`.
+3. Start the reverse proxy. You can use the script `run-caddy.sh` in the `dev-reverse-proxy` directory or download a
+   caddy binary from [caddy](https://caddyserver.com/) and start it using `caddy run`.
+
+## Running Tests
+
+### Unit
+
+Unit testing is done via jest.
+
+1. Run `yarn test`
+
+### End2End
+
+We use [cypress](https://cypress.io) for e2e tests.
+
+1. Start the frontend with `yarn dev:test` (or use a test build using `yarn build:test` which you can start
+   using `yarn start`). The usage of `:test` is mandatory!
+2. Run `yarn cy:open` to open the cypress test loader
+3. Choose your browser and start a test suite
+
+To run all tests in a headless browser use `yarn cy:run:chrome` or `yarn cy:run:firefox`
+
+### Bundle analysis
+
+You can inspect the generated production-bundle files to look for optimization issues.
+
+1. run `yarn analyze`. This will overwrite any existing builds!
+2. Open the generated `.next/server/analyze/server.html` in your favourite browser

frontend/cypress.config.ts

@@ -0,0 +1,18 @@
+/*
+ * SPDX-FileCopyrightText: 2022 The HedgeDoc developers (see AUTHORS file)
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+import { defineConfig } from 'cypress'
+
+export default defineConfig({
+  defaultCommandTimeout: 15000,
+  video: false,
+  projectId: 'ht3vbo',
+
+  e2e: {
+    baseUrl: 'http://127.0.0.1:3001/',
+    specPattern: 'cypress/e2e/**/*.{js,jsx,ts,tsx}'
+  }
+})

frontend/cypress/.eslintrc.json

@@ -0,0 +1,24 @@
+{
+  "parserOptions": {
+    "tsconfigRootDir": "",
+    "project": [
+      "./tsconfig.json"
+    ]
+  },
+  "plugins": [
+    "cypress",
+    "chai-friendly"
+  ],
+  "extends": [
+    "plugin:cypress/recommended"
+  ],
+  "rules": {
+    "@typescript-eslint/no-unused-expressions": 0,
+    "no-unused-expressions": 0,
+    "chai-friendly/no-unused-expressions": 2,
+    "@typescript-eslint/no-namespace": 0
+  },
+  "env": {
+    "cypress/globals": true
+  }
+}

frontend/cypress/.eslintrc.json.license

@@ -0,0 +1,3 @@
+SPDX-FileCopyrightText: 2021 The HedgeDoc developers (see AUTHORS file)
+
+SPDX-License-Identifier: CC0-1.0

frontend/cypress/e2e/deleteNote.spec.ts

@@ -0,0 +1,52 @@
+/*
+ * SPDX-FileCopyrightText: 2022 The HedgeDoc developers (see AUTHORS file)
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+import { testNoteId } from '../support/visit-test-editor'
+
+describe('Delete note', () => {
+  beforeEach(() => {
+    cy.visitTestNote()
+  })
+
+  it('correctly deletes a note', () => {
+    cy.intercept('DELETE', `api/private/notes/${testNoteId}`, {
+      statusCode: 204
+    })
+    cy.getByCypressId('sidebar.deleteNote.button').click()
+    cy.getByCypressId('sidebar.deleteNote.modal').should('be.visible')
+    cy.getByCypressId('sidebar.deleteNote.modal.noteTitle').should('be.visible').text().should('eq', '')
+    cy.getByCypressId('deletionModal.confirmButton').should('be.visible').click()
+    cy.getByCypressId('sidebar.deleteNote.modal').should('not.be.exist')
+    cy.getByCypressId('notification-toast').should('not.exist')
+  })
+
+  it('displays an error notification if something goes wrong', () => {
+    cy.getByCypressId('sidebar.deleteNote.button').click()
+    cy.getByCypressId('sidebar.deleteNote.modal').should('be.visible')
+    cy.getByCypressId('sidebar.deleteNote.modal.noteTitle').should('be.visible').text().should('eq', '')
+    cy.getByCypressId('deletionModal.confirmButton').should('be.visible').click()
+    cy.getByCypressId('sidebar.deleteNote.modal').should('not.exist')
+    cy.getByCypressId('notification-toast').should('be.visible')
+  })
+
+  describe('displays the note title coming from', () => {
+    const title = 'mock_title'
+    it('yaml metadata', () => {
+      cy.setCodemirrorContent(`---\ntitle: ${title}\n---`)
+    })
+    it('opengraph', () => {
+      cy.setCodemirrorContent(`---\nopengraph:\n  title: ${title}\n---`)
+    })
+    it('just first heading', () => {
+      cy.setCodemirrorContent(`# ${title}`)
+    })
+    afterEach(() => {
+      cy.getByCypressId('sidebar.deleteNote.button').click()
+      cy.getByCypressId('sidebar.deleteNote.modal').should('be.visible')
+      cy.getByCypressId('sidebar.deleteNote.modal.noteTitle').should('be.visible').text().should('eq', title)
+    })
+  })
+})

frontend/cypress/e2e/diagrams.spec.ts

@@ -0,0 +1,16 @@
+/*
+ * SPDX-FileCopyrightText: 2022 The HedgeDoc developers (see AUTHORS file)
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+describe('Diagram codeblock ', () => {
+  beforeEach(() => {
+    cy.visitTestNote()
+  })
+
+  it('renders mermaid', () => {
+    cy.setCodemirrorContent('```mermaid\ngraph TD;\n    A-->B;\n```')
+    cy.getMarkdownBody().findByCypressId('mermaid-frame').children().should('be.visible')
+  })
+})

frontend/cypress/e2e/document-read-only-page.spec.ts

@@ -0,0 +1,14 @@
+/*
+ * SPDX-FileCopyrightText: 2022 The HedgeDoc developers (see AUTHORS file)
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+import { PAGE_MODE } from '../support/visit'
+
+describe('Document read only page', () => {
+  it('renders the document mode', () => {
+    cy.visitTestNote(PAGE_MODE.DOCUMENT_READ_ONLY)
+    cy.getMarkdownBody().should('exist')
+  })
+})

frontend/cypress/e2e/documentTitle.spec.ts

@@ -0,0 +1,81 @@
+/*
+ * SPDX-FileCopyrightText: 2022 The HedgeDoc developers (see AUTHORS file)
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+import { branding } from '../support/config'
+
+const title = 'This is a test title'
+describe('Document Title', () => {
+  beforeEach(() => {
+    cy.visitTestNote()
+  })
+
+  describe('title should be yaml metadata title', () => {
+    it('just yaml metadata title', () => {
+      cy.setCodemirrorContent(`---\ntitle: ${title}\n---`)
+      cy.title().should('eq', `${title} - HedgeDoc @ ${branding.name}`)
+    })
+
+    it('yaml metadata title and opengraph title', () => {
+      cy.setCodemirrorContent(`---\ntitle: ${title}\nopengraph:\n  title: False title\n---`)
+      cy.title().should('eq', `${title} - HedgeDoc @ ${branding.name}`)
+    })
+
+    it('yaml metadata title, opengraph title and first heading', () => {
+      cy.setCodemirrorContent(`---\ntitle: ${title}\nopengraph:\n  title: False title\n---\n# a first title`)
+      cy.title().should('eq', `${title} - HedgeDoc @ ${branding.name}`)
+    })
+  })
+
+  describe('title should be opengraph title', () => {
+    it('just opengraph title', () => {
+      cy.setCodemirrorContent(`---\nopengraph:\n  title: ${title}\n---`)
+      cy.title().should('eq', `${title} - HedgeDoc @ ${branding.name}`)
+    })
+
+    it('opengraph title and first heading', () => {
+      cy.setCodemirrorContent(`---\nopengraph:\n  title: ${title}\n---\n# a first title`)
+      cy.title().should('eq', `${title} - HedgeDoc @ ${branding.name}`)
+    })
+  })
+
+  describe('title should be first heading', () => {
+    it('just first heading', () => {
+      cy.setCodemirrorContent(`# ${title}`)
+      cy.title().should('eq', `${title} - HedgeDoc @ ${branding.name}`)
+    })
+
+    it('just first heading with alt-text instead of image', () => {
+      cy.setCodemirrorContent(`# ${title} ![abc](https://dummyimage.com/48)`)
+      cy.title().should('eq', `${title} abc - HedgeDoc @ ${branding.name}`)
+    })
+
+    it('just first heading without link syntax', () => {
+      cy.setCodemirrorContent(`# ${title} [link](https://hedgedoc.org)`)
+      cy.title().should('eq', `${title} link - HedgeDoc @ ${branding.name}`)
+    })
+
+    it('markdown syntax removed first', () => {
+      cy.setCodemirrorContent(`# ${title} 1*2*3 4*5**`)
+      cy.title().should('eq', `${title} 123 4*5** - HedgeDoc @ ${branding.name}`)
+    })
+
+    it('markdown syntax removed second', () => {
+      cy.setCodemirrorContent(`# ${title} **1 2*`)
+      cy.title().should('eq', `${title} *1 2 - HedgeDoc @ ${branding.name}`)
+    })
+
+    it('markdown syntax removed third', () => {
+      cy.setCodemirrorContent(`# ${title} _asd_`)
+      cy.title().should('eq', `${title} asd - HedgeDoc @ ${branding.name}`)
+    })
+
+    it('katex code looks right', () => {
+      cy.setCodemirrorContent(`# $\\alpha$-foo`)
+      cy.getIframeBody().find('h1').should('contain', 'α')
+      cy.title().should('eq', `α-foo - HedgeDoc @ ${branding.name}`)
+    })
+  })
+})

frontend/cypress/e2e/export.spec.ts

@@ -0,0 +1,47 @@
+/*
+ * SPDX-FileCopyrightText: 2022 The HedgeDoc developers (see AUTHORS file)
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+describe('Export', () => {
+  const testTitle = 'testContent'
+  const testContent = `---\ntitle: ${testTitle}\n---\nThis is some test content`
+
+  beforeEach(() => {
+    cy.visitTestNote()
+    cy.setCodemirrorContent(testContent)
+  })
+
+  it('Markdown', () => {
+    cy.getByCypressId('menu-export').click()
+    cy.getByCypressId('menu-export-markdown').click()
+    cy.get('a[download]')
+      .then(
+        (anchor) =>
+          new Cypress.Promise((resolve: any, _: any) => {
+            // Use XHR to get the blob that corresponds to the object URL.
+            const xhr = new XMLHttpRequest()
+            xhr.open('GET', anchor.prop('href'), true)
+            xhr.responseType = 'blob'
+
+            // Once loaded, use FileReader to get the string back from the blob.
+            xhr.onload = () => {
+              if (xhr.status === 200) {
+                const blob = xhr.response
+                const reader = new FileReader()
+                reader.onload = () => {
+                  // Once we have a string, resolve the promise to let
+                  // the Cypress chain continue, e.g. to assert on the result.
+                  resolve(reader.result)
+                }
+                reader.readAsText(blob)
+              }
+            }
+            xhr.send()
+          })
+      )
+      // Now the regular Cypress assertions should work.
+      .should('equal', testContent)
+  })
+})

frontend/cypress/e2e/fileUpload.spec.ts

@@ -0,0 +1,109 @@
+/*
+ * SPDX-FileCopyrightText: 2022 The HedgeDoc developers (see AUTHORS file)
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+const imageUrl = 'http://example.com/non-existing.png'
+
+describe('File upload', () => {
+  beforeEach(() => {
+    cy.visitTestNote()
+    cy.fixture('demo.png').as('demoImage')
+  })
+
+  describe('works', () => {
+    beforeEach(() => {
+      cy.intercept(
+        {
+          method: 'POST',
+          url: 'api/private/media'
+        },
+        {
+          statusCode: 201,
+          body: {
+            url: imageUrl
+          }
+        }
+      )
+    })
+    it('via button', () => {
+      cy.getByCypressId('editor-pane').should('have.attr', 'data-cypress-editor-ready', 'true')
+      cy.getByCypressId('editor-toolbar-upload-image-button').should('be.visible')
+      cy.getByCypressId('editor-toolbar-upload-image-input').selectFile(
+        {
+          contents: '@demoImage',
+          fileName: 'demo.png',
+          mimeType: 'image/png'
+        },
+        { force: true }
+      )
+      cy.get('.cm-line').contains(`![demo.png](${imageUrl})`)
+    })
+
+    it('via paste', () => {
+      cy.getByCypressId('editor-pane').should('have.attr', 'data-cypress-editor-ready', 'true')
+      cy.fixture('demo.png').then((image: string) => {
+        const pasteEvent = {
+          clipboardData: {
+            files: [Cypress.Blob.base64StringToBlob(image, 'image/png')],
+            getData: () => ''
+          }
+        }
+        cy.get('.cm-content').trigger('paste', pasteEvent)
+        cy.get('.cm-line').contains(`![](${imageUrl})`)
+      })
+    })
+
+    it('via drag and drop', () => {
+      cy.getByCypressId('editor-pane').should('have.attr', 'data-cypress-editor-ready', 'true')
+      cy.get('.cm-content').selectFile(
+        {
+          contents: '@demoImage',
+          fileName: 'demo.png',
+          mimeType: 'image/png'
+        },
+        { action: 'drag-drop', force: true }
+      )
+      cy.get('.cm-line').contains(`![demo.png](${imageUrl})`)
+    })
+  })
+
+  it('fails', () => {
+    cy.getByCypressId('editor-pane').should('have.attr', 'data-cypress-editor-ready', 'true')
+    cy.intercept(
+      {
+        method: 'POST',
+        url: 'api/private/media'
+      },
+      {
+        statusCode: 400
+      }
+    )
+    cy.getByCypressId('editor-toolbar-upload-image-button').should('be.visible')
+    cy.getByCypressId('editor-toolbar-upload-image-input').selectFile(
+      {
+        contents: '@demoImage',
+        fileName: 'demo.png',
+        mimeType: 'image/png'
+      },
+      { force: true }
+    )
+    cy.get('.cm-line').contains('![upload of demo.png failed]()')
+  })
+
+  it('lets text paste still work', () => {
+    cy.getByCypressId('editor-pane').should('have.attr', 'data-cypress-editor-ready', 'true')
+    const testText = 'a long test text'
+
+    const pasteEvent: Event = Object.assign(new Event('paste', { bubbles: true, cancelable: true }), {
+      clipboardData: {
+        files: [],
+        getData: () => testText
+      }
+    })
+
+    cy.get('.cm-content').trigger('paste', pasteEvent)
+    cy.get('.cm-line').contains(`${testText}`)
+  })
+})

frontend/cypress/e2e/helpDialog.spec.ts

@@ -0,0 +1,16 @@
+/*
+ * SPDX-FileCopyrightText: 2022 The HedgeDoc developers (see AUTHORS file)
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+describe('Help Dialog', () => {
+  beforeEach(() => {
+    cy.visitTestNote()
+  })
+
+  it('ToDo-List', () => {
+    cy.getByCypressId('editor-help-button').click()
+    cy.get('input[type="checkbox"]').should('exist').should('not.be.checked')
+  })
+})

frontend/cypress/e2e/history.spec.ts

@@ -0,0 +1,191 @@
+/*
+ * SPDX-FileCopyrightText: 2022 The HedgeDoc developers (see AUTHORS file)
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+describe('History', () => {
+  describe('History Mode', () => {
+    beforeEach(() => {
+      cy.visitHistory()
+    })
+
+    it('Cards', () => {
+      cy.getByCypressId('history-card').should('be.visible')
+    })
+
+    it('Table', () => {
+      cy.getByCypressId('history-mode-table').click()
+      cy.getByCypressId('history-table').should('be.visible')
+    })
+  })
+
+  describe('entry title', () => {
+    describe('is as given when not empty', () => {
+      beforeEach(() => {
+        cy.clearLocalStorage('history')
+        cy.intercept('GET', 'api/private/me/history', {
+          body: [
+            {
+              identifier: 'cypress',
+              title: 'Features',
+              lastVisited: '2020-05-16T22:26:56.547Z',
+              pinStatus: false,
+              tags: []
+            }
+          ]
+        })
+        cy.visitHistory()
+      })
+
+      it('in table view', () => {
+        cy.getByCypressId('history-mode-table').click()
+        cy.getByCypressId('history-table').should('be.visible')
+        cy.getByCypressId('history-entry-title').contains('Features')
+      })
+
+      it('in cards view', () => {
+        cy.getByCypressId('history-entry-title').contains('Features')
+      })
+    })
+    describe('is untitled when not empty', () => {
+      beforeEach(() => {
+        cy.clearLocalStorage('history')
+        cy.intercept('GET', 'api/private/me/history', {
+          body: [
+            {
+              identifier: 'cypress-no-title',
+              title: '',
+              lastVisited: '2020-05-16T22:26:56.547Z',
+              pinStatus: false,
+              tags: []
+            }
+          ]
+        })
+        cy.visitHistory()
+      })
+
+      it('in table view', () => {
+        cy.getByCypressId('history-mode-table').click()
+        cy.getByCypressId('history-table').should('be.visible')
+        cy.getByCypressId('history-entry-title').contains('Untitled')
+      })
+
+      it('in cards view', () => {
+        cy.getByCypressId('history-entry-title').contains('Untitled')
+      })
+    })
+  })
+
+  describe('Pinning', () => {
+    beforeEach(() => {
+      cy.visitHistory()
+    })
+
+    describe('working', () => {
+      beforeEach(() => {
+        cy.intercept('PUT', 'api/private/me/history/features', (req) => {
+          req.reply(200, req.body)
+        })
+      })
+
+      it('Cards', () => {
+        cy.getByCypressId('history-card').should('be.visible')
+        cy.getByCypressId('history-entry-pin-button').first().as('pin-button')
+        cy.get('@pin-button').should('have.attr', 'data-cypress-pinned', 'true').click()
+        cy.get('@pin-button').should('have.attr', 'data-cypress-pinned', 'false')
+      })
+
+      it('Table', () => {
+        cy.getByCypressId('history-mode-table').click()
+        cy.getByCypressId('history-entry-pin-button').first().as('pin-button')
+        cy.get('@pin-button').should('have.attr', 'data-cypress-pinned', 'true').click()
+        cy.get('@pin-button').should('have.attr', 'data-cypress-pinned', 'false')
+      })
+    })
+
+    describe('failing', () => {
+      beforeEach(() => {
+        cy.intercept('PUT', 'api/private/me/history/features', {
+          statusCode: 401
+        })
+      })
+
+      it('Cards', () => {
+        cy.getByCypressId('history-card').should('be.visible')
+        cy.getByCypressId('history-entry-pin-button').first().click()
+        cy.getByCypressId('notification-toast').should('be.visible')
+      })
+
+      it('Table', () => {
+        cy.getByCypressId('history-mode-table').click()
+        cy.getByCypressId('history-entry-pin-button').first().click()
+        cy.getByCypressId('notification-toast').should('be.visible')
+      })
+    })
+  })
+
+  describe('Import', () => {
+    beforeEach(() => {
+      cy.clearLocalStorage('history')
+      cy.intercept('GET', 'api/private/me/history', {
+        body: []
+      })
+      cy.visitHistory()
+      cy.logout()
+
+      cy.fixture('history.json').as('history')
+      cy.fixture('history-2.json').as('history-2')
+      cy.fixture('invalid-history.txt').as('invalid-history')
+    })
+
+    it('works with valid file', () => {
+      cy.getByCypressId('import-history-file-button').should('be.visible')
+      cy.getByCypressId('import-history-file-input').selectFile(
+        {
+          contents: '@history',
+          fileName: 'history.json',
+          mimeType: 'application/json'
+        },
+        { force: true }
+      )
+      cy.getByCypressId('history-entry-title').should('have.length', 1).contains('cy-Test')
+    })
+
+    it('fails on invalid file', () => {
+      cy.getByCypressId('import-history-file-button').should('be.visible')
+      cy.getByCypressId('import-history-file-input').selectFile(
+        {
+          contents: '@invalid-history',
+          fileName: 'invalid-history.txt',
+          mimeType: 'text/plain'
+        },
+        { force: true }
+      )
+      cy.getByCypressId('notification-toast').should('be.visible')
+    })
+
+    it('works when selecting two files with the same name', () => {
+      cy.getByCypressId('import-history-file-button').should('be.visible')
+      cy.getByCypressId('import-history-file-input').selectFile(
+        {
+          contents: '@history',
+          fileName: 'history.json',
+          mimeType: 'application/json'
+        },
+        { force: true }
+      )
+      cy.getByCypressId('history-entry-title').should('have.length', 1).contains('cy-Test')
+      cy.getByCypressId('import-history-file-button').should('be.visible')
+      cy.getByCypressId('import-history-file-input').selectFile(
+        {
+          contents: '@history-2',
+          fileName: 'history.json',
+          mimeType: 'application/json'
+        },
+        { force: true }
+      )
+      cy.getByCypressId('history-entry-title').should('have.length', 2).contains('cy-Test2')
+    })
+  })
+})

frontend/cypress/e2e/iframe-capsule.ts

@@ -0,0 +1,17 @@
+/*
+ * SPDX-FileCopyrightText: 2022 The HedgeDoc developers (see AUTHORS file)
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+describe('Iframe capsule', () => {
+  beforeEach(() => {
+    cy.visitTestNote()
+  })
+
+  it('shows a clickable click shield instead of the iframe', () => {
+    cy.setCodemirrorContent('<iframe src="https://example.org"></iframe>')
+    cy.getMarkdownBody().findByCypressId('iframe-capsule-click-shield').should('exist').click()
+    cy.getMarkdownBody().find('iframe').should('exist').should('have.attr', 'src', 'https://example.org')
+  })
+})

frontend/cypress/e2e/import.spec.ts

@@ -0,0 +1,45 @@
+/*
+ * SPDX-FileCopyrightText: 2022 The HedgeDoc developers (see AUTHORS file)
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+describe('Import markdown file', () => {
+  beforeEach(() => {
+    cy.visitTestNote()
+    cy.fixture('import.md').as('import')
+  })
+
+  it('import on blank note', () => {
+    cy.getByCypressId('menu-import').click()
+    cy.getByCypressId('menu-import-markdown-button').should('be.visible')
+    cy.getByCypressId('menu-import-markdown-input').selectFile(
+      {
+        contents: '@import',
+        fileName: 'import.md',
+        mimeType: 'text/markdown'
+      },
+      { force: true }
+    )
+    cy.get('.cm-editor .cm-line:nth-child(1)').should('have.text', '# Some short import test file')
+    cy.get('.cm-editor .cm-line:nth-child(2)').should('have.text', ':)')
+  })
+
+  it('import on note with content', () => {
+    cy.setCodemirrorContent('test\nabc')
+    cy.getByCypressId('menu-import').click()
+    cy.getByCypressId('menu-import-markdown-button').should('be.visible')
+    cy.getByCypressId('menu-import-markdown-input').selectFile(
+      {
+        contents: '@import',
+        fileName: 'import.md',
+        mimeType: 'text/markdown'
+      },
+      { force: true }
+    )
+    cy.get('.cm-editor .cm-line:nth-child(1)').should('have.text', 'test')
+    cy.get('.cm-editor .cm-line:nth-child(2)').should('have.text', 'abc')
+    cy.get('.cm-editor .cm-line:nth-child(3)').should('have.text', '# Some short import test file')
+    cy.get('.cm-editor .cm-line:nth-child(4)').should('have.text', ':)')
+  })
+})

frontend/cypress/e2e/intro.spec.ts

@@ -0,0 +1,60 @@
+/*
+ * SPDX-FileCopyrightText: 2022 The HedgeDoc developers (see AUTHORS file)
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+/* eslint-disable @typescript-eslint/no-unsafe-call */
+describe('Intro page', () => {
+  beforeEach(() => {
+    cy.intercept('public/intro.md', 'test content')
+    cy.visitHome()
+  })
+
+  describe('customizable content', () => {
+    it('fetches and shows the correct intro page content', () => {
+      cy.getIntroBody().contains('test content')
+    })
+
+    it("won't show anything if no content was found", () => {
+      cy.intercept('public/intro.md', {
+        statusCode: 404
+      })
+      cy.visitHome()
+
+      cy.getByCypressId('documentIframe').should('not.exist')
+    })
+  })
+
+  describe('features button', () => {
+    it('is hidden when logged in', () => {
+      cy.getByCypressId('features-button').should('not.exist')
+    })
+
+    it('is visible when logged out', () => {
+      cy.logout()
+      cy.getByCypressId('features-button').should('exist')
+    })
+  })
+
+  describe('sign in button', () => {
+    it('is hidden when logged in', () => {
+      cy.getByCypressId('sign-in-button').should('not.exist')
+    })
+
+    it('is visible when logged out', () => {
+      cy.logout()
+      cy.getByCypressId('sign-in-button').should('exist')
+    })
+  })
+
+  describe('version dialog', () => {
+    it('can be opened and closed', () => {
+      cy.getByCypressId('version-modal').should('not.exist')
+      cy.getByCypressId('show-version-modal').click()
+      cy.getByCypressId('version-modal').should('be.visible')
+      cy.getByCypressId('version-modal').find('.modal-header .btn-close').click()
+      cy.getByCypressId('version-modal').should('not.exist')
+    })
+  })
+})

frontend/cypress/e2e/language.spec.ts

@@ -0,0 +1,29 @@
+/*
+ * SPDX-FileCopyrightText: 2022 The HedgeDoc developers (see AUTHORS file)
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+import { languages } from '../fixtures/languages'
+
+describe('Languages', () => {
+  beforeEach(() => {
+    cy.visitHome()
+    cy.getByCypressId('settingsButton').click()
+  })
+
+  it('all languages are available', () => {
+    cy.getByCypressId('language-picker').find('option').as('languages')
+    cy.get('@languages').should('have.length', 28)
+    languages.forEach((language) => {
+      cy.get('@languages').contains(language)
+    })
+  })
+
+  it('language changes affect the UI', () => {
+    cy.getByCypressId('language-picker').select('English')
+    cy.getByCypressId('new-note-button').find('span').contains('New note')
+    cy.getByCypressId('language-picker').select('Deutsch')
+    cy.getByCypressId('new-note-button').find('span').contains('Neue Notiz')
+  })
+})

frontend/cypress/e2e/linkEmbedder.spec.ts

@@ -0,0 +1,19 @@
+/*
+ * SPDX-FileCopyrightText: 2022 The HedgeDoc developers (see AUTHORS file)
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+describe('Link gets replaced with embedding: ', () => {
+  beforeEach(() => {
+    cy.visitTestNote()
+  })
+
+  // TODO Add general testing of one-click-embedding component. The tests below just test a specific use of the component.
+
+  it('GitHub Gist', () => {
+    cy.setCodemirrorContent('https://gist.github.com/schacon/1')
+    cy.getMarkdownBody().findByCypressId('click-shield-gist').findByCypressId('preview-background').parent().click()
+    cy.getMarkdownBody().findByCypressId('gh-gist').should('be.visible')
+  })
+})

frontend/cypress/e2e/linkSchemes.spec.ts

@@ -0,0 +1,75 @@
+/*
+ * SPDX-FileCopyrightText: 2022 The HedgeDoc developers (see AUTHORS file)
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+describe('markdown formatted links to', () => {
+  beforeEach(() => {
+    cy.visitTestNote()
+  })
+
+  it('external domains render as external link', () => {
+    cy.setCodemirrorContent('[external](https://hedgedoc.org/)')
+    cy.getMarkdownBody()
+      .find('a')
+      .should('have.attr', 'href', 'https://hedgedoc.org/')
+      .should('have.attr', 'rel', 'noreferer noopener')
+      .should('have.attr', 'target', '_blank')
+  })
+
+  it('note anchor references render as anchor link', () => {
+    cy.setCodemirrorContent('[anchor](#anchor)')
+    cy.getMarkdownBody().find('a').should('have.attr', 'href', 'http://127.0.0.1:3001/n/test#anchor')
+  })
+
+  it('internal pages render as internal link', () => {
+    cy.setCodemirrorContent('[internal](other-note)')
+    cy.getMarkdownBody().find('a').should('have.attr', 'href', 'http://127.0.0.1:3001/n/other-note')
+  })
+
+  it('data URIs do not render', () => {
+    cy.setCodemirrorContent('[data](data:text/plain,evil)')
+    cy.getMarkdownBody().find('a').should('not.exist')
+  })
+
+  it('javascript URIs do not render', () => {
+    cy.setCodemirrorContent('[js](javascript:alert("evil"))')
+    cy.getMarkdownBody().find('a').should('not.exist')
+  })
+})
+
+describe('HTML anchor element links to', () => {
+  beforeEach(() => {
+    cy.visitTestNote()
+  })
+
+  it('external domains render as external link', () => {
+    cy.setCodemirrorContent('<a href="https://hedgedoc.org/">external</a>')
+    cy.getMarkdownBody()
+      .find('a')
+      .should('have.attr', 'href', 'https://hedgedoc.org/')
+      .should('have.attr', 'rel', 'noreferer noopener')
+      .should('have.attr', 'target', '_blank')
+  })
+
+  it('note anchor references render as anchor link', () => {
+    cy.setCodemirrorContent('<a href="#anchor">anchor</a>')
+    cy.getMarkdownBody().find('a').should('have.attr', 'href', 'http://127.0.0.1:3001/n/test#anchor')
+  })
+
+  it('internal pages render as internal link', () => {
+    cy.setCodemirrorContent('<a href="other-note">internal</a>')
+    cy.getMarkdownBody().find('a').should('have.attr', 'href', 'http://127.0.0.1:3001/n/other-note')
+  })
+
+  it('data URIs do not render', () => {
+    cy.setCodemirrorContent('<a href="data:text/plain,evil">data</a>')
+    cy.getMarkdownBody().find('a').should('not.have.attr', 'href')
+  })
+
+  it('javascript URIs do not render', () => {
+    cy.setCodemirrorContent('<a href="javascript:alert(\'evil\')">js</a>')
+    cy.getMarkdownBody().find('a').should('not.have.attr', 'href')
+  })
+})

frontend/cypress/e2e/maxLength.spec.ts

@@ -0,0 +1,34 @@
+/*
+ * SPDX-FileCopyrightText: 2022 The HedgeDoc developers (see AUTHORS file)
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+describe('The status bar text length info', () => {
+  const warningTestContent = '0123456789'.repeat(10)
+  const dangerTestContent = '0123456789'.repeat(20)
+  const tooMuchTestContent = `${dangerTestContent}a`
+
+  beforeEach(() => {
+    cy.visitTestNote()
+  })
+
+  it('shows the maximal length of the document as number of available characters in the tooltip', () => {
+    cy.getByCypressId('remainingCharacters').attribute('title').should('contain', ' 200 ')
+  })
+
+  it('color is set to "warning" on <= 100 characters remaining', () => {
+    cy.setCodemirrorContent(warningTestContent)
+    cy.getByCypressId('remainingCharacters').should('have.class', 'text-warning')
+  })
+
+  it('color is set to danger on <= 0 characters remaining', () => {
+    cy.setCodemirrorContent(dangerTestContent)
+    cy.getByCypressId('remainingCharacters').should('have.class', 'text-danger')
+  })
+
+  it('opens a modal', () => {
+    cy.setCodemirrorContent(tooMuchTestContent)
+    cy.getByCypressId('limitReachedModal').should('be.visible')
+  })
+})

frontend/cypress/e2e/motd.spec.ts

@@ -0,0 +1,37 @@
+/*
+ * SPDX-FileCopyrightText: 2022 The HedgeDoc developers (see AUTHORS file)
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+const MOTD_LOCAL_STORAGE_KEY = 'motd.lastModified'
+const MOCK_LAST_MODIFIED = 'mockETag'
+const motdMockContent = 'This is the **mock** Motd call'
+const motdMockHtml = 'This is the <strong>mock</strong> Motd call'
+
+describe('Motd', () => {
+  it("shows, dismisses and won't show again a motd modal", () => {
+    localStorage.removeItem(MOTD_LOCAL_STORAGE_KEY)
+    cy.intercept('GET', 'public/motd.md', {
+      statusCode: 200,
+      headers: { 'Last-Modified': MOCK_LAST_MODIFIED },
+      body: motdMockContent
+    })
+
+    cy.intercept('HEAD', 'public/motd.md', {
+      statusCode: 200,
+      headers: { 'Last-Modified': MOCK_LAST_MODIFIED }
+    })
+    cy.visitHome()
+    cy.getMotdBody().should('contain.html', motdMockHtml)
+    cy.getByCypressId('motd-dismiss')
+      .click()
+      .then(() => {
+        expect(localStorage.getItem(MOTD_LOCAL_STORAGE_KEY)).to.equal(MOCK_LAST_MODIFIED)
+      })
+    cy.getByCypressId('motd-modal').should('not.exist')
+    cy.reload()
+    cy.get('main').should('exist')
+    cy.getByCypressId('motd-modal').should('not.exist')
+  })
+})

frontend/cypress/e2e/profile.spec.ts

@@ -0,0 +1,79 @@
+/*
+ * SPDX-FileCopyrightText: 2022 The HedgeDoc developers (see AUTHORS file)
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+describe('profile page', () => {
+  beforeEach(() => {
+    cy.intercept(
+      {
+        url: 'api/private/tokens',
+        method: 'GET'
+      },
+      {
+        body: [
+          {
+            label: 'cypress-App',
+            keyId: 'cypress',
+            createdAt: '2021-11-21T01:11:12+01:00',
+            lastUsed: '2021-11-21T01:11:12+01:00',
+            validUntil: '2023-11-21'
+          }
+        ]
+      }
+    )
+    cy.intercept(
+      {
+        url: 'api/private/tokens',
+        method: 'POST'
+      },
+      {
+        body: {
+          label: 'cypress',
+          keyId: 'cypress2',
+          secret: 'c-y-p-r-e-s-s',
+          createdAt: '2021-11-21T01:11:12+01:00',
+          lastUsed: '2021-11-21T01:11:12+01:00',
+          validUntil: '2023-11-21'
+        },
+        statusCode: 201
+      }
+    )
+    cy.intercept(
+      {
+        url: 'api/private/tokens/cypress',
+        method: 'DELETE'
+      },
+      {
+        body: [],
+        statusCode: 204
+      }
+    )
+    cy.visit('/profile', { retryOnNetworkFailure: true })
+  })
+
+  describe('access tokens', () => {
+    it('list existing tokens', () => {
+      cy.getByCypressId('access-token-label').contains('cypress-App')
+    })
+
+    it('delete token', () => {
+      cy.getByCypressId('access-token-delete-button').click()
+      cy.getByCypressId('access-token-modal-delete').as('deletion-modal')
+      cy.get('@deletion-modal').should('be.visible').find('.modal-footer .btn-danger').click()
+      cy.get('@deletion-modal').should('not.exist')
+    })
+
+    it('add token', () => {
+      cy.getByCypressId('access-token-add-button').should('be.disabled')
+      cy.getByCypressId('access-token-add-input-label').type('cypress')
+      cy.getByCypressId('access-token-modal-add').should('not.exist')
+      cy.getByCypressId('access-token-add-button').should('not.be.disabled').click()
+      cy.getByCypressId('access-token-modal-add')
+        .should('be.visible')
+        .find('input[readonly]')
+        .should('have.value', 'c-y-p-r-e-s-s')
+    })
+  })
+})

frontend/cypress/e2e/quote-extra.spec.ts

@@ -0,0 +1,52 @@
+/*
+ * SPDX-FileCopyrightText: 2022 The HedgeDoc developers (see AUTHORS file)
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+describe('Quote extra tags', function () {
+  beforeEach(() => {
+    cy.visitTestNote()
+  })
+
+  describe('Name quote tag', () => {
+    it('renders correctly', () => {
+      cy.setCodemirrorContent('[name=testy mctestface]')
+
+      cy.getMarkdownBody().find('.blockquote-extra').should('be.visible').find('.fa-user').should('be.visible')
+
+      cy.getMarkdownBody().find('.blockquote-extra').should('be.visible').contains('testy mctestface')
+    })
+  })
+
+  describe('Time quote tag', () => {
+    it('renders correctly', () => {
+      cy.setCodemirrorContent(`[time=always]`)
+
+      cy.getMarkdownBody().find('.blockquote-extra').should('be.visible').find('.fa-clock-o').should('be.visible')
+
+      cy.getMarkdownBody().find('.blockquote-extra').should('be.visible').contains('always')
+    })
+  })
+
+  describe('Color quote tag', () => {
+    it('renders correctly', () => {
+      cy.setCodemirrorContent(`[color=#b51f08]`)
+
+      cy.getMarkdownBody().find('.blockquote-extra').should('be.visible').find('.fa-tag').should('be.visible')
+
+      cy.getMarkdownBody().find('.blockquote-extra').should('be.visible').should('have.css', 'color', 'rgb(181, 31, 8)')
+    })
+
+    it("doesn't render in a blockquote and dyes the blockquote border", () => {
+      cy.setCodemirrorContent(`> [color=#b51f08] HedgeDoc`)
+
+      cy.getMarkdownBody().find('.blockquote-extra').should('not.exist')
+
+      cy.getMarkdownBody()
+        .find('blockquote')
+        .should('be.visible')
+        .should('have.css', 'border-left-color', 'rgb(181, 31, 8)')
+    })
+  })
+})

frontend/cypress/e2e/renderer-mode.spec.ts

@@ -0,0 +1,25 @@
+/*
+ * SPDX-FileCopyrightText: 2022 The HedgeDoc developers (see AUTHORS file)
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+describe('Renderer mode', () => {
+  beforeEach(() => {
+    cy.visitTestNote()
+  })
+
+  it("should be 'document' without type specified", () => {
+    cy.getMarkdownBody().should('exist')
+  })
+
+  it("should be 'reveal.js' with type 'slide'", () => {
+    cy.setCodemirrorContent('---\ntype: slide\n---\n')
+    cy.getReveal().should('exist')
+  })
+
+  it("should be 'document' with invalid type", () => {
+    cy.setCodemirrorContent('---\ntype: EinDokument\n---\n')
+    cy.getMarkdownBody().should('exist')
+  })
+})

frontend/cypress/e2e/signInButton.spec.ts

@@ -0,0 +1,96 @@
+/*
+ * SPDX-FileCopyrightText: 2022 The HedgeDoc developers (see AUTHORS file)
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+import type { AuthProvider } from '../../src/api/config/types'
+import { AuthProviderType } from '../../src/api/config/types'
+
+const initLoggedOutTestWithCustomAuthProviders = (cy: Cypress.cy, enabledProviders: AuthProvider[]) => {
+  cy.loadConfig({
+    authProviders: enabledProviders
+  })
+  cy.visitHome()
+  cy.logout()
+}
+
+describe('When logged-in, ', () => {
+  it('sign-in button is hidden', () => {
+    cy.visitHome()
+    cy.getByCypressId('sign-in-button').should('not.exist')
+  })
+})
+
+describe('When logged-out ', () => {
+  describe('and no auth-provider is enabled, ', () => {
+    it('sign-in button is hidden', () => {
+      initLoggedOutTestWithCustomAuthProviders(cy, [])
+      cy.getByCypressId('sign-in-button').should('not.exist')
+    })
+  })
+
+  describe('and an interactive auth-provider is enabled, ', () => {
+    it('sign-in button points to login route: internal', () => {
+      initLoggedOutTestWithCustomAuthProviders(cy, [
+        {
+          type: AuthProviderType.LOCAL
+        }
+      ])
+      cy.getByCypressId('sign-in-button').should('be.visible').should('have.attr', 'href', '/login')
+    })
+
+    it('sign-in button points to login route: ldap', () => {
+      initLoggedOutTestWithCustomAuthProviders(cy, [
+        {
+          type: AuthProviderType.LDAP,
+          identifier: 'cy-ldap',
+          providerName: 'cy LDAP'
+        }
+      ])
+      cy.getByCypressId('sign-in-button').should('be.visible').should('have.attr', 'href', '/login')
+    })
+  })
+
+  describe('and only one one-click auth-provider is enabled, ', () => {
+    it('sign-in button points to auth-provider', () => {
+      initLoggedOutTestWithCustomAuthProviders(cy, [
+        {
+          type: AuthProviderType.GITHUB
+        }
+      ])
+      cy.getByCypressId('sign-in-button')
+        .should('be.visible')
+        // The absolute URL is used because it is defined as API base URL absolute.
+        .should('have.attr', 'href', '/auth/github')
+    })
+  })
+
+  describe('and multiple one-click auth-providers are enabled, ', () => {
+    it('sign-in button points to login route', () => {
+      initLoggedOutTestWithCustomAuthProviders(cy, [
+        {
+          type: AuthProviderType.GITHUB
+        },
+        {
+          type: AuthProviderType.GOOGLE
+        }
+      ])
+      cy.getByCypressId('sign-in-button').should('be.visible').should('have.attr', 'href', '/login')
+    })
+  })
+
+  describe('and one-click- as well as interactive auth-providers are enabled, ', () => {
+    it('sign-in button points to login route', () => {
+      initLoggedOutTestWithCustomAuthProviders(cy, [
+        {
+          type: AuthProviderType.GITHUB
+        },
+        {
+          type: AuthProviderType.LOCAL
+        }
+      ])
+      cy.getByCypressId('sign-in-button').should('be.visible').should('have.attr', 'href', '/login')
+    })
+  })
+})

frontend/cypress/e2e/slideshow-only-page.spec.ts

@@ -0,0 +1,14 @@
+/*
+ * SPDX-FileCopyrightText: 2022 The HedgeDoc developers (see AUTHORS file)
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+import { PAGE_MODE } from '../support/visit'
+
+describe('Slideshow only page', () => {
+  it('renders slide show mode', () => {
+    cy.visitTestNote(PAGE_MODE.PRESENTATION)
+    cy.getReveal().should('exist')
+  })
+})

frontend/cypress/e2e/taskLists.spec.ts

@@ -0,0 +1,65 @@
+/*
+ * SPDX-FileCopyrightText: 2022 The HedgeDoc developers (see AUTHORS file)
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+describe('Task lists ', () => {
+  beforeEach(() => {
+    cy.visitTestNote()
+  })
+
+  describe('render with checkboxes ', () => {
+    it('when unchecked', () => {
+      cy.setCodemirrorContent('- [ ] abc\n\n* [ ] abc\n\n+ [ ] abc\n\n1. [ ] abc\n\n10. [ ] abc\n\n5) [ ] abc')
+      cy.getMarkdownBody().find('input[type=checkbox]').should('have.length', 6)
+    })
+
+    it('when checked lowercase', () => {
+      cy.setCodemirrorContent('- [x] abc\n\n* [x] abc\n\n+ [x] abc\n\n1. [x] abc\n\n10. [x] abc\n\n5) [x] abc')
+      cy.getMarkdownBody().find('input[type=checkbox]').should('have.length', 6)
+    })
+
+    it('when checked uppercase', () => {
+      cy.setCodemirrorContent('- [X] abc\n\n* [X] abc\n\n+ [X] abc\n\n1. [X] abc\n\n10. [X] abc\n\n5) [X] abc')
+      cy.getMarkdownBody().find('input[type=checkbox]').should('have.length', 6)
+    })
+  })
+
+  it('do not render as checkboxes when invalid', () => {
+    cy.setCodemirrorContent('- [Y] abc\n\n* [  ] abc\n\n+ [-] abc\n\n1. [.] abc\n\n10. [] abc\n\n5) [-] abc')
+    cy.getMarkdownBody().find('input[type=checkbox]').should('have.length', 0)
+  })
+
+  describe('are clickable and change the markdown source ', () => {
+    it('from unchecked to checked', () => {
+      cy.setCodemirrorContent('- [ ] abc')
+      cy.getMarkdownBody()
+        .find('input[type=checkbox]')
+        .each((box) => {
+          box.click()
+        })
+      cy.get('.cm-editor .cm-line').first().should('contain.text', '[x]').should('not.contain.text', '[ ]')
+    })
+
+    it('from checked (lowercase) to unchecked', () => {
+      cy.setCodemirrorContent('- [x] abc')
+      cy.getMarkdownBody()
+        .find('input[type=checkbox]')
+        .each((box) => {
+          box.click()
+        })
+      cy.get('.cm-editor .cm-line').should('exist').should('contain.text', '[ ]').should('not.contain.text', '[x]')
+    })
+
+    it('from checked (uppercase) to unchecked', () => {
+      cy.setCodemirrorContent('- [X] abc')
+      cy.getMarkdownBody()
+        .find('input[type=checkbox]')
+        .each((box) => {
+          box.click()
+        })
+      cy.get('.cm-editor .cm-line').should('exist').should('contain.text', '[ ]').should('not.contain.text', '[X]')
+    })
+  })
+})

frontend/cypress/e2e/word-count.spec.ts

@@ -0,0 +1,42 @@
+/*
+ * SPDX-FileCopyrightText: 2022 The HedgeDoc developers (see AUTHORS file)
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+describe('Test word count with', () => {
+  beforeEach(() => {
+    cy.visitTestNote()
+  })
+
+  it('empty note', () => {
+    cy.setCodemirrorContent('')
+    cy.getByCypressId('sidebar-btn-document-info').click()
+    cy.getByCypressId('document-info-modal').should('be.visible')
+    cy.getByCypressId('document-info-word-count').contains('0')
+  })
+
+  it('simple words', () => {
+    cy.setCodemirrorContent('five words should be enough')
+    cy.getMarkdownBody().contains('five words should be enough')
+    cy.getByCypressId('sidebar-btn-document-info').click()
+    cy.getByCypressId('document-info-modal').should('be.visible')
+    cy.getByCypressId('document-info-word-count').contains('5')
+  })
+
+  it('excluded codeblocks', () => {
+    cy.setCodemirrorContent('```\nthis is should be ignored\n```\n\ntwo `words`')
+    cy.getMarkdownBody().contains('two words')
+    cy.getByCypressId('sidebar-btn-document-info').click()
+    cy.getByCypressId('document-info-modal').should('be.visible')
+    cy.getByCypressId('document-info-word-count').contains('2')
+  })
+
+  it('excluded images', () => {
+    cy.setCodemirrorContent('![ignored alt text](https://dummyimage.com/48) not ignored text')
+    cy.getMarkdownBody().contains('not ignored text')
+    cy.getByCypressId('sidebar-btn-document-info').click()
+    cy.getByCypressId('document-info-modal').should('be.visible')
+    cy.getByCypressId('document-info-word-count').contains('3')
+  })
+})

frontend/cypress/fixtures/demo.png.license

@@ -0,0 +1,3 @@
+SPDX-FileCopyrightText: 2021 The HedgeDoc developers (see AUTHORS file)
+
+SPDX-License-Identifier: CC0-1.0

frontend/cypress/fixtures/history-2.json

@@ -0,0 +1 @@
+{"version":2,"entries":[{"identifier":"cypress2","title":"cy-Test2","tags":[],"lastVisited":"2019-04-30T09:36:45.249+02:00","pinStatus":false}]}

frontend/cypress/fixtures/history-2.json.license

@@ -0,0 +1,3 @@
+SPDX-FileCopyrightText: 2021 The HedgeDoc developers (see AUTHORS file)
+
+SPDX-License-Identifier: CC0-1.0

frontend/cypress/fixtures/history.json

@@ -0,0 +1 @@
+{"version":2,"entries":[{"identifier":"cypress","title":"cy-Test","tags":[],"lastVisited":"2019-04-30T09:36:45.249+02:00","pinStatus":false}]}

frontend/cypress/fixtures/history.json.license

@@ -0,0 +1,3 @@
+SPDX-FileCopyrightText: 2021 The HedgeDoc developers (see AUTHORS file)
+
+SPDX-License-Identifier: CC0-1.0

frontend/cypress/fixtures/import.md

@@ -0,0 +1,2 @@
+# Some short import test file
+:)

frontend/cypress/fixtures/import.md.license

@@ -0,0 +1,3 @@
+SPDX-FileCopyrightText: 2021 The HedgeDoc developers (see AUTHORS file)
+
+SPDX-License-Identifier: CC-BY-SA-4.0

frontend/cypress/fixtures/invalid-history.txt

@@ -0,0 +1 @@
+Invalid json

frontend/cypress/fixtures/invalid-history.txt.license

@@ -0,0 +1,3 @@
+SPDX-FileCopyrightText: 2021 The HedgeDoc developers (see AUTHORS file)
+
+SPDX-License-Identifier: CC0-1.0

frontend/cypress/fixtures/languages.ts

@@ -0,0 +1,36 @@
+/*
+ * SPDX-FileCopyrightText: 2021 The HedgeDoc developers (see AUTHORS file)
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+export const languages: string[] = [
+  'English',
+  '简体中文',
+  '繁體中文',
+  'Français',
+  'Deutsch',
+  '日本語',
+  'Español',
+  'Català',
+  'Ελληνικά',
+  'Português',
+  'Italiano',
+  'Türkçe',
+  'Русский',
+  'Nederlands',
+  'Hrvatski',
+  'Polski',
+  'Українська',
+  'हिन्दी',
+  'Svenska',
+  'Esperanto',
+  'Dansk',
+  '한국어',
+  'Bahasa Indonesia',
+  'Cрпски',
+  'Tiếng Việt',
+  'العربية',
+  'Česky',
+  'Slovensky'
+]

frontend/cypress/support/check-links.ts

@@ -0,0 +1,19 @@
+/*
+ * SPDX-FileCopyrightText: 2021 The HedgeDoc developers (see AUTHORS file)
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+declare namespace Cypress {
+  interface Chainable {
+    /**
+     * Custom command to check an external Link.
+     * @example cy.get(a#extern).checkExternalLink('http://example.com')
+     */
+    checkExternalLink(url: string): Chainable<Element>
+  }
+}
+
+Cypress.Commands.add('checkExternalLink', { prevSubject: 'element' }, ($element: JQuery, url: string) => {
+  cy.wrap($element).should('have.attr', 'href', url).should('have.attr', 'target', '_blank')
+})

frontend/cypress/support/config.ts

@@ -0,0 +1,103 @@
+/*
+ * SPDX-FileCopyrightText: 2022 The HedgeDoc developers (see AUTHORS file)
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+import { AuthProviderType } from '../../src/api/config/types'
+
+declare namespace Cypress {
+  interface Chainable {
+    loadConfig(): Chainable<Window>
+  }
+}
+
+export const branding = {
+  name: 'DEMO Corp',
+  logo: 'public/img/demo.png'
+}
+
+export const authProviders = [
+  {
+    type: AuthProviderType.FACEBOOK
+  },
+  {
+    type: AuthProviderType.GITHUB
+  },
+  {
+    type: AuthProviderType.TWITTER
+  },
+  {
+    type: AuthProviderType.DROPBOX
+  },
+  {
+    type: AuthProviderType.GOOGLE
+  },
+  {
+    type: AuthProviderType.LOCAL
+  },
+  {
+    type: AuthProviderType.LDAP,
+    identifier: 'test-ldap',
+    providerName: 'Test LDAP'
+  },
+  {
+    type: AuthProviderType.OAUTH2,
+    identifier: 'test-oauth2',
+    providerName: 'Test OAuth2'
+  },
+  {
+    type: AuthProviderType.SAML,
+    identifier: 'test-saml',
+    providerName: 'Test SAML'
+  },
+  {
+    type: AuthProviderType.GITLAB,
+    identifier: 'test-gitlab',
+    providerName: 'Test GitLab'
+  }
+]
+
+export const config = {
+  allowAnonymous: true,
+  allowRegister: true,
+  authProviders: authProviders,
+  branding: branding,
+  useImageProxy: false,
+  specialUrls: {
+    privacy: 'https://example.com/privacy',
+    termsOfUse: 'https://example.com/termsOfUse',
+    imprint: 'https://example.com/imprint'
+  },
+  version: {
+    major: 0,
+    minor: 0,
+    patch: 0,
+    preRelease: '',
+    commit: 'MOCK'
+  },
+  plantumlServer: 'http://mock-plantuml.local',
+  maxDocumentLength: 200
+}
+
+Cypress.Commands.add('loadConfig', (additionalConfig?: Partial<typeof config>) => {
+  return cy.intercept('api/private/config', {
+    statusCode: 200,
+    body: {
+      ...config,
+      ...additionalConfig
+    }
+  })
+})
+
+beforeEach(() => {
+  cy.loadConfig()
+
+  cy.intercept('GET', 'public/motd.md', {
+    body: '404 Not Found!',
+    statusCode: 404
+  })
+  cy.intercept('HEAD', 'public/motd.md', {
+    statusCode: 404
+  })
+})

frontend/cypress/support/e2e.ts

@@ -0,0 +1,30 @@
+/*
+ * SPDX-FileCopyrightText: 2022 The HedgeDoc developers (see AUTHORS file)
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+// ***********************************************************
+// This example support/index.ts is processed and
+// loaded automatically before your test files.
+//
+// This is a great place to put global configuration and
+// behavior that modifies Cypress.
+//
+// You can change the location of this file or turn off
+// automatically serving support files with the
+// 'supportFile' configuration option.
+//
+// You can read more here:
+// https://on.cypress.io/configuration
+// ***********************************************************
+
+import 'cypress-commands'
+import './check-links'
+import './config'
+import './fill'
+import './get-by-id'
+import './get-iframe-content'
+import './logout'
+import './visit-test-editor'
+import './visit'

frontend/cypress/support/fill.ts

@@ -0,0 +1,29 @@
+/*
+ * SPDX-FileCopyrightText: 2022 The HedgeDoc developers (see AUTHORS file)
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+import 'cypress-fill-command'
+
+declare namespace Cypress {
+  interface Chainable {
+    setCodemirrorContent(value: string): Chainable<Element>
+  }
+}
+
+Cypress.Commands.add('setCodemirrorContent', (content: string) => {
+  const line = content.split('\n').find((value) => value !== '')
+  cy.getByCypressId('editor-pane')
+    .should('have.attr', 'data-cypress-editor-ready', 'true')
+    .get('.cm-editor')
+    .click()
+    .get('.cm-content')
+    .fill(content)
+  if (line) {
+    cy.getByCypressId('editor-pane')
+      .should('have.attr', 'data-cypress-editor-ready', 'true')
+      .get('.cm-editor')
+      .find('.cm-line')
+      .should('contain.text', line)
+  }
+})

frontend/cypress/support/get-by-id.ts

@@ -0,0 +1,28 @@
+/*
+ * SPDX-FileCopyrightText: 2021 The HedgeDoc developers (see AUTHORS file)
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+declare namespace Cypress {
+  interface Chainable {
+    getByCypressId(id: string): Chainable<Element>
+
+    findByCypressId(id: string): Chainable<Element>
+  }
+}
+
+const CYPRESS_ATTR = 'data-cypress-id'
+
+Cypress.Commands.add('getByCypressId', (id: string) => {
+  return cy.get(`[${CYPRESS_ATTR}="${id}"]`)
+})
+
+Cypress.Commands.add(
+  'findByCypressId',
+  {
+    prevSubject: 'element'
+  },
+  (parent: JQuery<HTMLElement>, id: string) => {
+    return cy.wrap(parent).find(`[${CYPRESS_ATTR}="${id}"]`)
+  }
+)

frontend/cypress/support/get-iframe-content.ts

@@ -0,0 +1,49 @@
+/*
+ * SPDX-FileCopyrightText: 2021 The HedgeDoc developers (see AUTHORS file)
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+import { RendererType } from '../../src/components/render-page/window-post-message-communicator/rendering-message'
+
+declare namespace Cypress {
+  interface Chainable<Subject = unknown> {
+    getIframeBody(rendererType?: RendererType): Chainable<Element>
+
+    getReveal(): Chainable<Element>
+
+    getMarkdownBody(): Chainable<Element>
+
+    getIntroBody(): Chainable<Element>
+
+    getMotdBody(): Chainable<Element>
+  }
+}
+
+Cypress.Commands.add('getIframeBody', (rendererType?: RendererType) => {
+  const renderTypeAttribute = rendererType ? `[data-cypress-renderer-type="${rendererType}"]` : ''
+  return cy
+    .get(`iframe[data-cypress-id="documentIframe"][data-cypress-renderer-ready="true"]${renderTypeAttribute}`)
+    .should('be.visible')
+    .its('0.contentDocument')
+    .should('exist')
+    .its('body')
+    .should('not.be.undefined')
+    .then(cy.wrap.bind(cy))
+})
+
+Cypress.Commands.add('getReveal', () => {
+  return cy.getIframeBody(RendererType.SLIDESHOW).find('.reveal')
+})
+
+Cypress.Commands.add('getMarkdownBody', () => {
+  return cy.getIframeBody(RendererType.DOCUMENT).findByCypressId('markdown-body')
+})
+
+Cypress.Commands.add('getIntroBody', () => {
+  return cy.getIframeBody(RendererType.INTRO).findByCypressId('markdown-body')
+})
+
+Cypress.Commands.add('getMotdBody', () => {
+  return cy.getIframeBody(RendererType.MOTD).findByCypressId('markdown-body')
+})

frontend/cypress/support/logout.ts

@@ -0,0 +1,20 @@
+/*
+ * SPDX-FileCopyrightText: 2021 The HedgeDoc developers (see AUTHORS file)
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+declare namespace Cypress {
+  interface Chainable {
+    /**
+     * Custom command to log the user out.
+     * @example cy.logout()
+     */
+    logout(): Chainable<Window>
+  }
+}
+
+Cypress.Commands.add('logout', () => {
+  cy.getByCypressId('user-dropdown').click()
+  cy.getByCypressId('user-dropdown-sign-out-button').click()
+})

frontend/cypress/support/visit-test-editor.ts

@@ -0,0 +1,32 @@
+/*
+ * SPDX-FileCopyrightText: 2022 The HedgeDoc developers (see AUTHORS file)
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+export const testNoteId = 'test'
+
+beforeEach(() => {
+  cy.intercept(`api/private/notes/${testNoteId}`, {
+    content: '',
+    metadata: {
+      id: testNoteId,
+      alias: ['mock-note'],
+      primaryAlias: 'mock-note',
+      title: 'Mock Note',
+      description: 'Mocked note for testing',
+      tags: ['test', 'mock', 'cypress'],
+      updateTime: '2021-04-24T09:27:51.000Z',
+      updateUser: null,
+      viewCount: 0,
+      version: 2,
+      createTime: '2021-04-24T09:27:51.000Z',
+      editedBy: [],
+      permissions: {
+        owner: null,
+        sharedToUsers: [],
+        sharedToGroups: []
+      }
+    },
+    editedByAtPosition: []
+  })
+})

frontend/cypress/support/visit.ts

@@ -0,0 +1,38 @@
+/*
+ * SPDX-FileCopyrightText: 2022 The HedgeDoc developers (see AUTHORS file)
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+import { testNoteId } from './visit-test-editor'
+
+declare namespace Cypress {
+  interface Chainable {
+    visitTestNote(pageMode?: PAGE_MODE, query?: string): Chainable<Cypress.AUTWindow>
+
+    visitHome(): Chainable<Cypress.AUTWindow>
+
+    visitHistory(): Chainable<Cypress.AUTWindow>
+  }
+}
+
+Cypress.Commands.add('visitHome', () => {
+  return cy.visit('/', { retryOnNetworkFailure: true, retryOnStatusCodeFailure: true })
+})
+
+Cypress.Commands.add('visitHistory', () => {
+  return cy.visit(`/history`, { retryOnNetworkFailure: true, retryOnStatusCodeFailure: true })
+})
+
+export enum PAGE_MODE {
+  EDITOR = 'n',
+  PRESENTATION = 'p',
+  DOCUMENT_READ_ONLY = 's'
+}
+
+Cypress.Commands.add('visitTestNote', (pageMode: PAGE_MODE = PAGE_MODE.EDITOR, query?: string) => {
+  return cy.visit(`/${pageMode}/${testNoteId}${query ? `?${query}` : ''}`, {
+    retryOnNetworkFailure: true,
+    retryOnStatusCodeFailure: true
+  })
+})