Merge pull request #1266 from hedgedoc/feature/anonymous_user_colors

docs/content/dev/db-schema.plantuml

@@ -74,7 +74,7 @@ entity "revision" {
 entity "authorship" {
   *id : uuid <<generated>>
   --
-  *userId : uuid <FK user>>
+  *authorId : uuid <FK user>>
   *startPos : number
   *endPos : number
   *createdAt : date
@@ -86,11 +86,12 @@ entity "revision_authorship" {
   *authorshipId : uuid <<FK authorship>>
 }
 
-entity "author_colors" {
-  *noteId : uuid <<FK note>>
-  *userId : uuid <<FK user>>
+entity "author" {
+  *id : number <<generated>>
   --
   *color : text
+  sessionID : text <<FK session>>
+  userId : uuid <<FK user>>
 }
 
 
@@ -148,22 +149,23 @@ entity "history_entry" {
   *updatedAt: date
 }
 
-user "1" -- "0..*" note: owner
+user "0..1" -- "0..*" note: owner
 user "1" -u- "1..*" identity
 user "1" -l- "1..*" auth_token: authTokens
 user "1" -r- "1..*" session
 user "1" -- "0..*" media_upload
-user "1" - "0..*" history_entry
+user "1" -- "0..*" history_entry
 user "0..*" -- "0..*" note
-user "1" -- "0..*" authorship
+user "0..1" -- "0..*" author
 
-(user, note) . author_colors
+author "1" -- "0..*" authorship
+author "1" -u- "0..*" session
 
 revision "0..*" -- "0..*" authorship
 (revision, authorship) .. revision_authorship
 
 media_upload "0..*"  -- "1" note
-note "1" - "1..*" revision
+note "1" -d- "1..*" revision
 note "1" - "0..*" history_entry
 note "0..*" -l- "0..*" tag
 note "0..*" -- "0..*" group

src/api/private/me/history/history.controller.spec.ts

@@ -5,6 +5,8 @@
  */
 
 import { Test, TestingModule } from '@nestjs/testing';
+import { Author } from '../../../../authors/author.entity';
+import { Session } from '../../../../users/session.entity';
 import { HistoryController } from './history.controller';
 import { LoggerModule } from '../../../../logger/logger.module';
 import { UsersModule } from '../../../../users/users.module';
@@ -19,7 +21,6 @@ import { User } from '../../../../users/user.entity';
 import { Note } from '../../../../notes/note.entity';
 import { AuthToken } from '../../../../auth/auth-token.entity';
 import { Identity } from '../../../../users/identity.entity';
-import { AuthorColor } from '../../../../notes/author-color.entity';
 import { Authorship } from '../../../../revisions/authorship.entity';
 import { Revision } from '../../../../revisions/revision.entity';
 import { Tag } from '../../../../notes/tag.entity';
@@ -58,8 +59,6 @@ describe('HistoryController', () => {
       .useValue({})
       .overrideProvider(getRepositoryToken(Identity))
       .useValue({})
-      .overrideProvider(getRepositoryToken(AuthorColor))
-      .useValue({})
       .overrideProvider(getRepositoryToken(Authorship))
       .useValue({})
       .overrideProvider(getRepositoryToken(Revision))
@@ -74,6 +73,10 @@ describe('HistoryController', () => {
       .useValue({})
       .overrideProvider(getRepositoryToken(Group))
       .useValue({})
+      .overrideProvider(getRepositoryToken(Author))
+      .useValue({})
+      .overrideProvider(getRepositoryToken(Session))
+      .useValue({})
       .compile();
 
     controller = module.get<HistoryController>(HistoryController);

src/api/private/me/me.controller.spec.ts

@@ -5,6 +5,8 @@
  */
 
 import { Test, TestingModule } from '@nestjs/testing';
+import { Author } from '../../../authors/author.entity';
+import { Session } from '../../../users/session.entity';
 import { MeController } from './me.controller';
 import { UsersModule } from '../../../users/users.module';
 import { LoggerModule } from '../../../logger/logger.module';
@@ -12,7 +14,6 @@ import { getRepositoryToken } from '@nestjs/typeorm';
 import { User } from '../../../users/user.entity';
 import { Identity } from '../../../users/identity.entity';
 import { MediaModule } from '../../../media/media.module';
-import { AuthorColor } from '../../../notes/author-color.entity';
 import { NoteGroupPermission } from '../../../permissions/note-group-permission.entity';
 import { NoteUserPermission } from '../../../permissions/note-user-permission.entity';
 import { Authorship } from '../../../revisions/authorship.entity';
@@ -62,8 +63,6 @@ describe('MeController', () => {
       .useValue({})
       .overrideProvider(getRepositoryToken(Group))
       .useValue({})
-      .overrideProvider(getRepositoryToken(AuthorColor))
-      .useValue({})
       .overrideProvider(getRepositoryToken(NoteGroupPermission))
       .useValue({})
       .overrideProvider(getRepositoryToken(NoteUserPermission))
@@ -72,6 +71,10 @@ describe('MeController', () => {
       .useValue({})
       .overrideProvider(getRepositoryToken(MediaUpload))
       .useValue({})
+      .overrideProvider(getRepositoryToken(Session))
+      .useValue({})
+      .overrideProvider(getRepositoryToken(Author))
+      .useValue({})
       .compile();
 
     controller = module.get<MeController>(MeController);

src/api/private/media/media.controller.spec.ts

@@ -5,6 +5,9 @@
  */
 
 import { Test, TestingModule } from '@nestjs/testing';
+import { Author } from '../../../authors/author.entity';
+import { Session } from '../../../users/session.entity';
+import { UsersModule } from '../../../users/users.module';
 import { MediaController } from './media.controller';
 import { LoggerModule } from '../../../logger/logger.module';
 import { ConfigModule } from '@nestjs/config';
@@ -16,7 +19,6 @@ import externalConfigMock from '../../../config/mock/external-services.config.mo
 import { MediaModule } from '../../../media/media.module';
 import { NotesModule } from '../../../notes/notes.module';
 import { getRepositoryToken } from '@nestjs/typeorm';
-import { AuthorColor } from '../../../notes/author-color.entity';
 import { Authorship } from '../../../revisions/authorship.entity';
 import { AuthToken } from '../../../auth/auth-token.entity';
 import { Identity } from '../../../users/identity.entity';
@@ -48,11 +50,10 @@ describe('MediaController', () => {
             externalConfigMock,
           ],
         }),
+        UsersModule,
       ],
       controllers: [MediaController],
     })
-      .overrideProvider(getRepositoryToken(AuthorColor))
-      .useValue({})
       .overrideProvider(getRepositoryToken(Authorship))
       .useValue({})
       .overrideProvider(getRepositoryToken(AuthToken))
@@ -75,6 +76,10 @@ describe('MediaController', () => {
       .useValue({})
       .overrideProvider(getRepositoryToken(Group))
       .useValue({})
+      .overrideProvider(getRepositoryToken(Session))
+      .useValue({})
+      .overrideProvider(getRepositoryToken(Author))
+      .useValue({})
       .compile();
 
     controller = module.get<MediaController>(MediaController);

src/api/private/notes/notes.controller.spec.ts

@@ -5,6 +5,8 @@
  */
 
 import { Test, TestingModule } from '@nestjs/testing';
+import { Author } from '../../../authors/author.entity';
+import { Session } from '../../../users/session.entity';
 import { NotesController } from './notes.controller';
 import { NotesService } from '../../../notes/notes.service';
 import {
@@ -26,7 +28,6 @@ import appConfigMock from '../../../config/mock/app.config.mock';
 import mediaConfigMock from '../../../config/mock/media.config.mock';
 import { Revision } from '../../../revisions/revision.entity';
 import { Authorship } from '../../../revisions/authorship.entity';
-import { AuthorColor } from '../../../notes/author-color.entity';
 import { User } from '../../../users/user.entity';
 import { AuthToken } from '../../../auth/auth-token.entity';
 import { Identity } from '../../../users/identity.entity';
@@ -52,6 +53,10 @@ describe('NotesController', () => {
           provide: getRepositoryToken(Tag),
           useValue: {},
         },
+        {
+          provide: getRepositoryToken(User),
+          useValue: {},
+        },
       ],
       imports: [
         RevisionsModule,
@@ -74,8 +79,6 @@ describe('NotesController', () => {
       .useValue({})
       .overrideProvider(getRepositoryToken(Authorship))
       .useValue({})
-      .overrideProvider(getRepositoryToken(AuthorColor))
-      .useValue({})
       .overrideProvider(getRepositoryToken(User))
       .useValue({})
       .overrideProvider(getRepositoryToken(AuthToken))
@@ -96,6 +99,10 @@ describe('NotesController', () => {
       .useValue({})
       .overrideProvider(getRepositoryToken(MediaUpload))
       .useValue({})
+      .overrideProvider(getRepositoryToken(Session))
+      .useValue({})
+      .overrideProvider(getRepositoryToken(Author))
+      .useValue({})
       .compile();
 
     controller = module.get<NotesController>(NotesController);

src/api/private/tokens/tokens.controller.spec.ts

@@ -5,6 +5,7 @@
  */
 
 import { Test, TestingModule } from '@nestjs/testing';
+import { Session } from '../../../users/session.entity';
 import { TokensController } from './tokens.controller';
 import { LoggerModule } from '../../../logger/logger.module';
 import { getRepositoryToken } from '@nestjs/typeorm';
@@ -36,6 +37,8 @@ describe('TokensController', () => {
       .useValue({})
       .overrideProvider(getRepositoryToken(Identity))
       .useValue({})
+      .overrideProvider(getRepositoryToken(Session))
+      .useValue({})
       .compile();
 
     controller = module.get<TokensController>(TokensController);

src/api/public/me/me.controller.spec.ts

@@ -10,9 +10,9 @@ import {
   getRepositoryToken,
   TypeOrmModule,
 } from '@nestjs/typeorm';
+import { Author } from '../../../authors/author.entity';
 import { HistoryModule } from '../../../history/history.module';
 import { LoggerModule } from '../../../logger/logger.module';
-import { AuthorColor } from '../../../notes/author-color.entity';
 import { Note } from '../../../notes/note.entity';
 import { NotesModule } from '../../../notes/notes.module';
 import { Tag } from '../../../notes/tag.entity';
@@ -20,6 +20,7 @@ import { Authorship } from '../../../revisions/authorship.entity';
 import { Revision } from '../../../revisions/revision.entity';
 import { AuthToken } from '../../../auth/auth-token.entity';
 import { Identity } from '../../../users/identity.entity';
+import { Session } from '../../../users/session.entity';
 import { User } from '../../../users/user.entity';
 import { UsersModule } from '../../../users/users.module';
 import { MeController } from './me.controller';
@@ -62,8 +63,6 @@ describe('Me Controller', () => {
       .useValue({})
       .overrideProvider(getRepositoryToken(Identity))
       .useValue({})
-      .overrideProvider(getRepositoryToken(AuthorColor))
-      .useValue({})
       .overrideProvider(getRepositoryToken(Authorship))
       .useValue({})
       .overrideProvider(getRepositoryToken(Revision))
@@ -80,6 +79,10 @@ describe('Me Controller', () => {
       .useValue({})
       .overrideProvider(getRepositoryToken(MediaUpload))
       .useValue({})
+      .overrideProvider(getRepositoryToken(Session))
+      .useValue({})
+      .overrideProvider(getRepositoryToken(Author))
+      .useValue({})
       .compile();
 
     controller = module.get<MeController>(MeController);

src/api/public/media/media.controller.spec.ts

@@ -7,12 +7,12 @@
 import { ConfigModule } from '@nestjs/config';
 import { Test, TestingModule } from '@nestjs/testing';
 import { getRepositoryToken } from '@nestjs/typeorm';
+import { Author } from '../../../authors/author.entity';
 import appConfigMock from '../../../config/mock/app.config.mock';
 import mediaConfigMock from '../../../config/mock/media.config.mock';
 import { LoggerModule } from '../../../logger/logger.module';
 import { MediaUpload } from '../../../media/media-upload.entity';
 import { MediaModule } from '../../../media/media.module';
-import { AuthorColor } from '../../../notes/author-color.entity';
 import { Note } from '../../../notes/note.entity';
 import { NotesModule } from '../../../notes/notes.module';
 import { Tag } from '../../../notes/tag.entity';
@@ -20,6 +20,7 @@ import { Authorship } from '../../../revisions/authorship.entity';
 import { Revision } from '../../../revisions/revision.entity';
 import { AuthToken } from '../../../auth/auth-token.entity';
 import { Identity } from '../../../users/identity.entity';
+import { Session } from '../../../users/session.entity';
 import { User } from '../../../users/user.entity';
 import { MediaController } from './media.controller';
 import { NoteGroupPermission } from '../../../permissions/note-group-permission.entity';
@@ -42,8 +43,6 @@ describe('Media Controller', () => {
         NotesModule,
       ],
     })
-      .overrideProvider(getRepositoryToken(AuthorColor))
-      .useValue({})
       .overrideProvider(getRepositoryToken(Authorship))
       .useValue({})
       .overrideProvider(getRepositoryToken(AuthToken))
@@ -66,6 +65,10 @@ describe('Media Controller', () => {
       .useValue({})
       .overrideProvider(getRepositoryToken(Group))
       .useValue({})
+      .overrideProvider(getRepositoryToken(Session))
+      .useValue({})
+      .overrideProvider(getRepositoryToken(Author))
+      .useValue({})
       .compile();
 
     controller = module.get<MediaController>(MediaController);

src/api/public/notes/notes.controller.spec.ts

@@ -10,8 +10,8 @@ import {
   getRepositoryToken,
   TypeOrmModule,
 } from '@nestjs/typeorm';
+import { Author } from '../../../authors/author.entity';
 import { LoggerModule } from '../../../logger/logger.module';
-import { AuthorColor } from '../../../notes/author-color.entity';
 import { Note } from '../../../notes/note.entity';
 import { NotesService } from '../../../notes/notes.service';
 import { Tag } from '../../../notes/tag.entity';
@@ -20,6 +20,7 @@ import { Revision } from '../../../revisions/revision.entity';
 import { RevisionsModule } from '../../../revisions/revisions.module';
 import { AuthToken } from '../../../auth/auth-token.entity';
 import { Identity } from '../../../users/identity.entity';
+import { Session } from '../../../users/session.entity';
 import { User } from '../../../users/user.entity';
 import { UsersModule } from '../../../users/users.module';
 import { NotesController } from './notes.controller';
@@ -52,6 +53,10 @@ describe('Notes Controller', () => {
           provide: getRepositoryToken(Tag),
           useValue: {},
         },
+        {
+          provide: getRepositoryToken(User),
+          useValue: {},
+        },
       ],
       imports: [
         RevisionsModule,
@@ -76,8 +81,6 @@ describe('Notes Controller', () => {
       .useValue({})
       .overrideProvider(getRepositoryToken(Authorship))
       .useValue({})
-      .overrideProvider(getRepositoryToken(AuthorColor))
-      .useValue({})
       .overrideProvider(getRepositoryToken(User))
       .useValue({})
       .overrideProvider(getRepositoryToken(AuthToken))
@@ -98,6 +101,10 @@ describe('Notes Controller', () => {
       .useValue({})
       .overrideProvider(getRepositoryToken(MediaUpload))
       .useValue({})
+      .overrideProvider(getRepositoryToken(Session))
+      .useValue({})
+      .overrideProvider(getRepositoryToken(Author))
+      .useValue({})
       .compile();
 
     controller = module.get<NotesController>(NotesController);

src/auth/auth.service.spec.ts

@@ -5,6 +5,7 @@
  */
 
 import { Test, TestingModule } from '@nestjs/testing';
+import { Session } from '../users/session.entity';
 import { AuthService } from './auth.service';
 import { PassportModule } from '@nestjs/passport';
 import { getRepositoryToken } from '@nestjs/typeorm';
@@ -49,6 +50,8 @@ describe('AuthService', () => {
       .useValue({})
       .overrideProvider(getRepositoryToken(User))
       .useClass(Repository)
+      .overrideProvider(getRepositoryToken(Session))
+      .useValue({})
       .compile();
 
     service = module.get<AuthService>(AuthService);

src/authors/author.entity.ts

@@ -4,14 +4,68 @@
  * SPDX-License-Identifier: AGPL-3.0-only
  */
 
-import { Entity, PrimaryGeneratedColumn } from 'typeorm';
-import { Note } from '../notes/note.entity';
+import {
+  Column,
+  Entity,
+  ManyToOne,
+  OneToMany,
+  PrimaryGeneratedColumn,
+} from 'typeorm';
+import { Authorship } from '../revisions/authorship.entity';
+import { Session } from '../users/session.entity';
+import { User } from '../users/user.entity';
 
+export type AuthorColor = number;
+
+/**
+ * The author represents a single user editing a note.
+ * A 'user' can either be a registered and logged-in user or a browser session identified by its cookie.
+ * All edits (aka authorships) of one user in a note must belong to the same author, so that the same color can be displayed.
+ */
 @Entity()
 export class Author {
-  //TODO: Still missing many properties
   @PrimaryGeneratedColumn()
   id: number;
 
-  note: Note;
+  /**
+   * The id of the color of this author
+   * The application maps the id to an actual color
+   */
+  @Column({ type: 'int' })
+  color: AuthorColor;
+
+  /**
+   * A list of (browser) sessions this author has
+   * Only contains sessions for anonymous users, which don't have a user set
+   */
+  @OneToMany(() => Session, (session) => session.author)
+  sessions: Session[];
+
+  /**
+   * User that this author corresponds to
+   * Only set when the user was identified (by a browser session) as a registered user at edit-time
+   */
+  @ManyToOne(() => User, (user) => user.authors, { nullable: true })
+  user: User | null;
+
+  /**
+   * List of authorships that this author created
+   * All authorships must belong to the same note
+   */
+  @OneToMany(() => Authorship, (authorship) => authorship.author)
+  authorships: Authorship[];
+
+  // eslint-disable-next-line @typescript-eslint/no-empty-function
+  private constructor() {}
+
+  public static create(
+    color: number,
+  ): Pick<Author, 'color' | 'sessions' | 'user' | 'authorships'> {
+    const newAuthor = new Author();
+    newAuthor.color = color;
+    newAuthor.sessions = [];
+    newAuthor.user = null;
+    newAuthor.authorships = [];
+    return newAuthor;
+  }
 }

src/history/history.service.spec.ts

@@ -5,14 +5,15 @@
  */
 
 import { Test, TestingModule } from '@nestjs/testing';
+import { Author } from '../authors/author.entity';
 import { LoggerModule } from '../logger/logger.module';
+import { Session } from '../users/session.entity';
 import { HistoryService } from './history.service';
 import { UsersModule } from '../users/users.module';
 import { NotesModule } from '../notes/notes.module';
 import { getConnectionToken, getRepositoryToken } from '@nestjs/typeorm';
 import { Identity } from '../users/identity.entity';
 import { User } from '../users/user.entity';
-import { AuthorColor } from '../notes/author-color.entity';
 import { Authorship } from '../revisions/authorship.entity';
 import { HistoryEntry } from './history-entry.entity';
 import { Note } from '../notes/note.entity';
@@ -75,8 +76,6 @@ describe('HistoryService', () => {
       .useValue({})
       .overrideProvider(getRepositoryToken(Authorship))
       .useValue({})
-      .overrideProvider(getRepositoryToken(AuthorColor))
-      .useValue({})
       .overrideProvider(getRepositoryToken(Revision))
       .useValue({})
       .overrideProvider(getRepositoryToken(Note))
@@ -89,6 +88,10 @@ describe('HistoryService', () => {
       .useValue({})
       .overrideProvider(getRepositoryToken(Group))
       .useValue({})
+      .overrideProvider(getRepositoryToken(Session))
+      .useValue({})
+      .overrideProvider(getRepositoryToken(Author))
+      .useValue({})
       .compile();
 
     service = module.get<HistoryService>(HistoryService);

src/media/media.service.spec.ts

@@ -7,9 +7,9 @@
 import { ConfigModule } from '@nestjs/config';
 import { Test, TestingModule } from '@nestjs/testing';
 import { getRepositoryToken } from '@nestjs/typeorm';
+import { Author } from '../authors/author.entity';
 import mediaConfigMock from '../config/mock/media.config.mock';
 import { LoggerModule } from '../logger/logger.module';
-import { AuthorColor } from '../notes/author-color.entity';
 import { Note } from '../notes/note.entity';
 import { NotesModule } from '../notes/notes.module';
 import { Tag } from '../notes/tag.entity';
@@ -17,6 +17,7 @@ import { Authorship } from '../revisions/authorship.entity';
 import { Revision } from '../revisions/revision.entity';
 import { AuthToken } from '../auth/auth-token.entity';
 import { Identity } from '../users/identity.entity';
+import { Session } from '../users/session.entity';
 import { User } from '../users/user.entity';
 import { UsersModule } from '../users/users.module';
 import { FilesystemBackend } from './backends/filesystem-backend';
@@ -56,8 +57,6 @@ describe('MediaService', () => {
         UsersModule,
       ],
     })
-      .overrideProvider(getRepositoryToken(AuthorColor))
-      .useValue({})
       .overrideProvider(getRepositoryToken(Authorship))
       .useValue({})
       .overrideProvider(getRepositoryToken(AuthToken))
@@ -80,6 +79,10 @@ describe('MediaService', () => {
       .useClass(Repository)
       .overrideProvider(getRepositoryToken(Group))
       .useValue({})
+      .overrideProvider(getRepositoryToken(Session))
+      .useValue({})
+      .overrideProvider(getRepositoryToken(Author))
+      .useValue({})
       .compile();
 
     service = module.get<MediaService>(MediaService);

src/notes/author-color.entity.ts

@@ -1,25 +0,0 @@
-/*
- * SPDX-FileCopyrightText: 2021 The HedgeDoc developers (see AUTHORS file)
- *
- * SPDX-License-Identifier: AGPL-3.0-only
- */
-
-import { Column, Entity, ManyToOne } from 'typeorm';
-import { User } from '../users/user.entity';
-import { Note } from './note.entity';
-
-@Entity()
-export class AuthorColor {
-  @ManyToOne((_) => Note, (note) => note.authorColors, {
-    primary: true,
-  })
-  note: Note;
-
-  @ManyToOne((_) => User, {
-    primary: true,
-  })
-  user: User;
-
-  @Column()
-  color: string;
-}

src/notes/note.entity.ts

@@ -17,7 +17,6 @@ import { NoteGroupPermission } from '../permissions/note-group-permission.entity
 import { NoteUserPermission } from '../permissions/note-user-permission.entity';
 import { Revision } from '../revisions/revision.entity';
 import { User } from '../users/user.entity';
-import { AuthorColor } from './author-color.entity';
 import { Tag } from './tag.entity';
 import { HistoryEntry } from '../history/history-entry.entity';
 import { MediaUpload } from '../media/media-upload.entity';
@@ -59,8 +58,6 @@ export class Note {
   owner: User | null;
   @OneToMany((_) => Revision, (revision) => revision.note, { cascade: true })
   revisions: Promise<Revision[]>;
-  @OneToMany((_) => AuthorColor, (authorColor) => authorColor.note)
-  authorColors: AuthorColor[];
   @OneToMany((_) => HistoryEntry, (historyEntry) => historyEntry.user)
   historyEntries: HistoryEntry[];
   @OneToMany((_) => MediaUpload, (mediaUpload) => mediaUpload.note)
@@ -90,7 +87,6 @@ export class Note {
     newNote.alias = alias ?? null;
     newNote.viewCount = 0;
     newNote.owner = owner ?? null;
-    newNote.authorColors = [];
     newNote.userPermissions = [];
     newNote.groupPermissions = [];
     newNote.revisions = Promise.resolve([]) as Promise<Revision[]>;

src/notes/notes.module.ts

@@ -5,27 +5,27 @@
  */
 
 import { forwardRef, Module } from '@nestjs/common';
+import { ConfigModule } from '@nestjs/config';
 import { TypeOrmModule } from '@nestjs/typeorm';
+import { GroupsModule } from '../groups/groups.module';
 import { LoggerModule } from '../logger/logger.module';
+import { NoteGroupPermission } from '../permissions/note-group-permission.entity';
+import { NoteUserPermission } from '../permissions/note-user-permission.entity';
 import { RevisionsModule } from '../revisions/revisions.module';
+import { User } from '../users/user.entity';
 import { UsersModule } from '../users/users.module';
-import { AuthorColor } from './author-color.entity';
 import { Note } from './note.entity';
 import { NotesService } from './notes.service';
 import { Tag } from './tag.entity';
-import { NoteGroupPermission } from '../permissions/note-group-permission.entity';
-import { NoteUserPermission } from '../permissions/note-user-permission.entity';
-import { GroupsModule } from '../groups/groups.module';
-import { ConfigModule } from '@nestjs/config';
 
 @Module({
   imports: [
     TypeOrmModule.forFeature([
       Note,
-      AuthorColor,
       Tag,
       NoteGroupPermission,
       NoteUserPermission,
+      User,
     ]),
     forwardRef(() => RevisionsModule),
     UsersModule,

src/notes/notes.service.spec.ts

@@ -6,15 +6,16 @@
 
 import { Test, TestingModule } from '@nestjs/testing';
 import { getRepositoryToken } from '@nestjs/typeorm';
+import { Author } from '../authors/author.entity';
 import { LoggerModule } from '../logger/logger.module';
 import { Authorship } from '../revisions/authorship.entity';
 import { Revision } from '../revisions/revision.entity';
 import { RevisionsModule } from '../revisions/revisions.module';
 import { AuthToken } from '../auth/auth-token.entity';
 import { Identity } from '../users/identity.entity';
+import { Session } from '../users/session.entity';
 import { User } from '../users/user.entity';
 import { UsersModule } from '../users/users.module';
-import { AuthorColor } from './author-color.entity';
 import { Note } from './note.entity';
 import { NotesService } from './notes.service';
 import { Repository } from 'typeorm';
@@ -45,6 +46,12 @@ describe('NotesService', () => {
   let forbiddenNoteId: string;
 
   beforeEach(async () => {
+    /**
+     * We need to have *one* userRepo for both the providers array and
+     * the overrideProvider call, as otherwise we have two instances
+     * and the mock of createQueryBuilder replaces the wrong one
+     * **/
+    userRepo = new Repository<User>();
     const module: TestingModule = await Test.createTestingModule({
       providers: [
         NotesService,
@@ -56,6 +63,10 @@ describe('NotesService', () => {
           provide: getRepositoryToken(Tag),
           useClass: Repository,
         },
+        {
+          provide: getRepositoryToken(User),
+          useValue: userRepo,
+        },
       ],
       imports: [
         ConfigModule.forRoot({
@@ -73,15 +84,13 @@ describe('NotesService', () => {
       .overrideProvider(getRepositoryToken(Tag))
       .useClass(Repository)
       .overrideProvider(getRepositoryToken(User))
-      .useClass(Repository)
+      .useValue(userRepo)
       .overrideProvider(getRepositoryToken(AuthToken))
       .useValue({})
       .overrideProvider(getRepositoryToken(Identity))
       .useValue({})
       .overrideProvider(getRepositoryToken(Authorship))
       .useValue({})
-      .overrideProvider(getRepositoryToken(AuthorColor))
-      .useValue({})
       .overrideProvider(getRepositoryToken(Revision))
       .useClass(Repository)
       .overrideProvider(getRepositoryToken(NoteGroupPermission))
@@ -90,6 +99,10 @@ describe('NotesService', () => {
       .useValue({})
       .overrideProvider(getRepositoryToken(Group))
       .useClass(Repository)
+      .overrideProvider(getRepositoryToken(Session))
+      .useValue({})
+      .overrideProvider(getRepositoryToken(Author))
+      .useValue({})
       .compile();
 
     const config = module.get<ConfigService>(ConfigService);
@@ -658,7 +671,8 @@ describe('NotesService', () => {
   describe('toNoteMetadataDto', () => {
     it('works', async () => {
       const user = User.create('hardcoded', 'Testy') as User;
-      const otherUser = User.create('other hardcoded', 'Testy2') as User;
+      const author = Author.create(1);
+      author.user = user;
       const group = Group.create('testGroup', 'testGroup');
       const content = 'testContent';
       jest
@@ -668,33 +682,36 @@ describe('NotesService', () => {
       const revisions = await note.revisions;
       revisions[0].authorships = [
         {
-          user: otherUser,
           revisions: revisions,
           startPos: 0,
           endPos: 1,
           updatedAt: new Date(1549312452000),
+          author: author,
         } as Authorship,
         {
-          user: user,
           revisions: revisions,
           startPos: 0,
           endPos: 1,
           updatedAt: new Date(1549312452001),
+          author: author,
         } as Authorship,
       ];
       revisions[0].createdAt = new Date(1549312452000);
       jest.spyOn(revisionRepo, 'findOne').mockResolvedValue(revisions[0]);
+      const createQueryBuilder = {
+        innerJoin: () => createQueryBuilder,
+        where: () => createQueryBuilder,
+        getMany: () => [user],
+      };
+      jest
+        .spyOn(userRepo, 'createQueryBuilder')
+        // eslint-disable-next-line @typescript-eslint/ban-ts-comment
+        // @ts-ignore
+        .mockImplementation(() => createQueryBuilder);
       note.publicId = 'testId';
       note.alias = 'testAlias';
       note.title = 'testTitle';
       note.description = 'testDescription';
-      note.authorColors = [
-        {
-          note: note,
-          user: user,
-          color: 'red',
-        } as AuthorColor,
-      ];
       note.owner = user;
       note.userPermissions = [
         {
@@ -748,6 +765,8 @@ describe('NotesService', () => {
   describe('toNoteDto', () => {
     it('works', async () => {
       const user = User.create('hardcoded', 'Testy') as User;
+      const author = Author.create(1);
+      author.user = user;
       const otherUser = User.create('other hardcoded', 'Testy2') as User;
       otherUser.userName = 'other hardcoded user';
       const group = Group.create('testGroup', 'testGroup');
@@ -759,18 +778,18 @@ describe('NotesService', () => {
       const revisions = await note.revisions;
       revisions[0].authorships = [
         {
-          user: otherUser,
           revisions: revisions,
           startPos: 0,
           endPos: 1,
           updatedAt: new Date(1549312452000),
+          author: author,
         } as Authorship,
         {
-          user: user,
           revisions: revisions,
           startPos: 0,
           endPos: 1,
           updatedAt: new Date(1549312452001),
+          author: author,
         } as Authorship,
       ];
       revisions[0].createdAt = new Date(1549312452000);
@@ -778,17 +797,20 @@ describe('NotesService', () => {
         .spyOn(revisionRepo, 'findOne')
         .mockResolvedValue(revisions[0])
         .mockResolvedValue(revisions[0]);
+      const createQueryBuilder = {
+        innerJoin: () => createQueryBuilder,
+        where: () => createQueryBuilder,
+        getMany: () => [user],
+      };
+      jest
+        .spyOn(userRepo, 'createQueryBuilder')
+        // eslint-disable-next-line @typescript-eslint/ban-ts-comment
+        // @ts-ignore
+        .mockImplementation(() => createQueryBuilder);
       note.publicId = 'testId';
       note.alias = 'testAlias';
       note.title = 'testTitle';
       note.description = 'testDescription';
-      note.authorColors = [
-        {
-          note: note,
-          user: user,
-          color: 'red',
-        } as AuthorColor,
-      ];
       note.owner = user;
       note.userPermissions = [
         {

src/notes/notes.service.ts

@@ -41,6 +41,7 @@ export class NotesService {
     private readonly logger: ConsoleLoggerService,
     @InjectRepository(Note) private noteRepository: Repository<Note>,
     @InjectRepository(Tag) private tagRepository: Repository<Tag>,
+    @InjectRepository(User) private userRepository: Repository<User>,
     @Inject(UsersService) private usersService: UsersService,
     @Inject(GroupsService) private groupsService: GroupsService,
     @Inject(forwardRef(() => RevisionsService))
@@ -60,13 +61,7 @@ export class NotesService {
   async getUserNotes(user: User): Promise<Note[]> {
     const notes = await this.noteRepository.find({
       where: { owner: user },
-      relations: [
-        'owner',
-        'userPermissions',
-        'groupPermissions',
-        'authorColors',
-        'tags',
-      ],
+      relations: ['owner', 'userPermissions', 'groupPermissions', 'tags'],
     });
     if (notes === undefined) {
       return [];
@@ -173,7 +168,6 @@ export class NotesService {
         },
       ],
       relations: [
-        'authorColors',
         'owner',
         'groupPermissions',
         'groupPermissions.group',
@@ -195,6 +189,22 @@ export class NotesService {
     return note;
   }
 
+  /**
+   * @async
+   * Get all users that ever appeared as an author for the given note
+   * @param note The note to search authors for
+   */
+  async getAuthorUsers(note: Note): Promise<User[]> {
+    return await this.userRepository
+      .createQueryBuilder('user')
+      .innerJoin('user.authors', 'author')
+      .innerJoin('author.authorships', 'authorship')
+      .innerJoin('authorship.revisions', 'revision')
+      .innerJoin('revision.note', 'note')
+      .where('note.id = :id', { id: note.id })
+      .getMany();
+  }
+
   /**
    * Check if the provided note id or alias is not forbidden
    * @param noteIdOrAlias - the alias or id in question
@@ -317,7 +327,7 @@ export class NotesService {
       // the user of that Authorship is the updateUser
       return lastRevision.authorships.sort(
         (a, b) => b.updatedAt.getTime() - a.updatedAt.getTime(),
-      )[0].user;
+      )[0].author.user;
     }
     // If there are no Authorships, the owner is the updateUser
     return note.owner;
@@ -365,9 +375,7 @@ export class NotesService {
       title: note.title ?? '',
       createTime: (await this.getFirstRevision(note)).createdAt,
       description: note.description ?? '',
-      editedBy: note.authorColors.map(
-        (authorColor) => authorColor.user.userName,
-      ),
+      editedBy: (await this.getAuthorUsers(note)).map((user) => user.userName),
       permissions: this.toNotePermissionsDto(note),
       tags: this.toTagList(note),
       updateTime: (await this.getLatestRevision(note)).createdAt,

src/permissions/permissions.service.spec.ts

@@ -7,15 +7,16 @@
 import { Test, TestingModule } from '@nestjs/testing';
 import { getRepositoryToken } from '@nestjs/typeorm';
 import { AuthToken } from '../auth/auth-token.entity';
+import { Author } from '../authors/author.entity';
 import { Group } from '../groups/group.entity';
 import { LoggerModule } from '../logger/logger.module';
-import { AuthorColor } from '../notes/author-color.entity';
 import { Note } from '../notes/note.entity';
 import { NotesModule } from '../notes/notes.module';
 import { Tag } from '../notes/tag.entity';
 import { Authorship } from '../revisions/authorship.entity';
 import { Revision } from '../revisions/revision.entity';
 import { Identity } from '../users/identity.entity';
+import { Session } from '../users/session.entity';
 import { User } from '../users/user.entity';
 import { UsersModule } from '../users/users.module';
 import { NoteGroupPermission } from './note-group-permission.entity';
@@ -50,8 +51,6 @@ describe('PermissionsService', () => {
       .useValue({})
       .overrideProvider(getRepositoryToken(Authorship))
       .useValue({})
-      .overrideProvider(getRepositoryToken(AuthorColor))
-      .useValue({})
       .overrideProvider(getRepositoryToken(Revision))
       .useValue({})
       .overrideProvider(getRepositoryToken(Note))
@@ -64,6 +63,10 @@ describe('PermissionsService', () => {
       .useValue({})
       .overrideProvider(getRepositoryToken(Group))
       .useValue({})
+      .overrideProvider(getRepositoryToken(Session))
+      .useValue({})
+      .overrideProvider(getRepositoryToken(Author))
+      .useValue({})
       .compile();
     permissionsService = module.get<PermissionsService>(PermissionsService);
   });

src/revisions/authorship.entity.ts

@@ -13,11 +13,11 @@ import {
   PrimaryGeneratedColumn,
   UpdateDateColumn,
 } from 'typeorm';
-import { User } from '../users/user.entity';
+import { Author } from '../authors/author.entity';
 import { Revision } from './revision.entity';
 
 /**
- * This class stores which parts of a revision were edited by a particular user.
+ * The Authorship represents a change in the content of a note by a particular {@link Author}
  */
 @Entity()
 export class Authorship {
@@ -31,10 +31,10 @@ export class Authorship {
   revisions: Revision[];
 
   /**
-   * User this authorship represents
+   * Author that created the change
    */
-  @ManyToOne((_) => User)
-  user: User;
+  @ManyToOne(() => Author, (author) => author.authorships)
+  author: Author;
 
   @Column()
   startPos: number;
@@ -47,4 +47,15 @@ export class Authorship {
 
   @UpdateDateColumn()
   updatedAt: Date;
+
+  // eslint-disable-next-line @typescript-eslint/no-empty-function
+  private constructor() {}
+
+  public static create(author: Author, startPos: number, endPos: number) {
+    const newAuthorship = new Authorship();
+    newAuthorship.author = author;
+    newAuthorship.startPos = startPos;
+    newAuthorship.endPos = endPos;
+    return newAuthorship;
+  }
 }

src/revisions/revisions.module.ts

@@ -6,6 +6,7 @@
 
 import { forwardRef, Module } from '@nestjs/common';
 import { TypeOrmModule } from '@nestjs/typeorm';
+import { AuthorsModule } from '../authors/authors.module';
 import { LoggerModule } from '../logger/logger.module';
 import { NotesModule } from '../notes/notes.module';
 import { Authorship } from './authorship.entity';
@@ -19,6 +20,7 @@ import { ConfigModule } from '@nestjs/config';
     forwardRef(() => NotesModule),
     LoggerModule,
     ConfigModule,
+    AuthorsModule,
   ],
   providers: [RevisionsService],
   exports: [RevisionsService],

src/revisions/revisions.service.spec.ts

@@ -7,13 +7,15 @@
 import { Test, TestingModule } from '@nestjs/testing';
 import { getRepositoryToken } from '@nestjs/typeorm';
 import { Repository } from 'typeorm';
+import { Author } from '../authors/author.entity';
+import { AuthorsModule } from '../authors/authors.module';
 import { NotInDBError } from '../errors/errors';
 import { LoggerModule } from '../logger/logger.module';
-import { AuthorColor } from '../notes/author-color.entity';
 import { Note } from '../notes/note.entity';
 import { NotesModule } from '../notes/notes.module';
 import { AuthToken } from '../auth/auth-token.entity';
 import { Identity } from '../users/identity.entity';
+import { Session } from '../users/session.entity';
 import { User } from '../users/user.entity';
 import { Authorship } from './authorship.entity';
 import { Revision } from './revision.entity';
@@ -49,8 +51,6 @@ describe('RevisionsService', () => {
     })
       .overrideProvider(getRepositoryToken(Authorship))
       .useValue({})
-      .overrideProvider(getRepositoryToken(AuthorColor))
-      .useValue({})
       .overrideProvider(getRepositoryToken(User))
       .useValue({})
       .overrideProvider(getRepositoryToken(AuthToken))
@@ -69,6 +69,10 @@ describe('RevisionsService', () => {
       .useValue({})
       .overrideProvider(getRepositoryToken(Group))
       .useValue({})
+      .overrideProvider(getRepositoryToken(Session))
+      .useValue({})
+      .overrideProvider(getRepositoryToken(Author))
+      .useValue({})
       .compile();
 
     service = module.get<RevisionsService>(RevisionsService);

src/seed.ts

@@ -5,6 +5,8 @@
  */
 
 import { createConnection } from 'typeorm';
+import { Author } from './authors/author.entity';
+import { Session } from './users/session.entity';
 import { User } from './users/user.entity';
 import { Note } from './notes/note.entity';
 import { Revision } from './revisions/revision.entity';
@@ -12,7 +14,6 @@ import { Authorship } from './revisions/authorship.entity';
 import { NoteGroupPermission } from './permissions/note-group-permission.entity';
 import { NoteUserPermission } from './permissions/note-user-permission.entity';
 import { Group } from './groups/group.entity';
-import { AuthorColor } from './notes/author-color.entity';
 import { HistoryEntry } from './history/history-entry.entity';
 import { MediaUpload } from './media/media-upload.entity';
 import { Tag } from './notes/tag.entity';
@@ -33,28 +34,50 @@ createConnection({
     NoteGroupPermission,
     NoteUserPermission,
     Group,
-    AuthorColor,
     HistoryEntry,
     MediaUpload,
     Tag,
     AuthToken,
     Identity,
+    Author,
+    Session,
   ],
   synchronize: true,
   logging: false,
+  dropSchema: true,
 })
   .then(async (connection) => {
-    const user = User.create('hardcoded', 'Test User');
-    const note = Note.create(undefined, 'test');
-    const revision = Revision.create(
-      'This is a test note',
-      'This is a test note',
-    );
-    note.revisions = Promise.all([revision]);
-    note.userPermissions = [];
-    note.groupPermissions = [];
-    user.ownedNotes = [note];
-    await connection.manager.save([user, note, revision]);
+    const users = [];
+    users.push(User.create('hardcoded', 'Test User 1'));
+    users.push(User.create('hardcoded_2', 'Test User 2'));
+    users.push(User.create('hardcoded_3', 'Test User 3'));
+    const notes: Note[] = [];
+    notes.push(Note.create(undefined, 'test'));
+    notes.push(Note.create(undefined, 'test2'));
+    notes.push(Note.create(undefined, 'test3'));
+
+    for (let i = 0; i < 3; i++) {
+      const author = connection.manager.create(Author, Author.create(1));
+      const user = connection.manager.create(User, users[i]);
+      author.user = user;
+      const revision = Revision.create(
+        'This is a test note',
+        'This is a test note',
+      );
+      const authorship = Authorship.create(author, 1, 42);
+      revision.authorships = [authorship];
+      notes[i].revisions = Promise.all([revision]);
+      notes[i].userPermissions = [];
+      notes[i].groupPermissions = [];
+      user.ownedNotes = [notes[i]];
+      await connection.manager.save([
+        notes[i],
+        user,
+        revision,
+        authorship,
+        author,
+      ]);
+    }
     const foundUser = await connection.manager.findOne(User);
     if (!foundUser) {
       throw new Error('Could not find freshly seeded user. Aborting.');

src/users/session.entity.ts

@@ -5,7 +5,8 @@
  */
 
 import { ISession } from 'connect-typeorm';
-import { Column, Entity, Index, PrimaryColumn } from 'typeorm';
+import { Column, Entity, Index, ManyToOne, PrimaryColumn } from 'typeorm';
+import { Author } from '../authors/author.entity';
 
 @Entity()
 export class Session implements ISession {
@@ -18,4 +19,7 @@ export class Session implements ISession {
 
   @Column('text')
   public json = '';
+
+  @ManyToOne(() => Author, (author) => author.sessions)
+  author: Author;
 }

src/users/user.entity.ts

@@ -12,6 +12,7 @@ import {
   UpdateDateColumn,
 } from 'typeorm';
 import { Column, OneToMany } from 'typeorm';
+import { Author } from '../authors/author.entity';
 import { Note } from '../notes/note.entity';
 import { AuthToken } from '../auth/auth-token.entity';
 import { Identity } from './identity.entity';
@@ -68,6 +69,9 @@ export class User {
   @OneToMany((_) => MediaUpload, (mediaUpload) => mediaUpload.user)
   mediaUploads: MediaUpload[];
 
+  @OneToMany(() => Author, (author) => author.user)
+  authors: Author[];
+
   // eslint-disable-next-line @typescript-eslint/no-empty-function
   private constructor() {}
 

src/users/users.module.ts

@@ -8,11 +8,12 @@ import { Module } from '@nestjs/common';
 import { TypeOrmModule } from '@nestjs/typeorm';
 import { LoggerModule } from '../logger/logger.module';
 import { Identity } from './identity.entity';
+import { Session } from './session.entity';
 import { User } from './user.entity';
 import { UsersService } from './users.service';
 
 @Module({
-  imports: [TypeOrmModule.forFeature([User, Identity]), LoggerModule],
+  imports: [TypeOrmModule.forFeature([User, Identity, Session]), LoggerModule],
   providers: [UsersService],
   exports: [UsersService],
 })