// Copyright 2024 The Hugo Authors. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package goldmark_test

import (
	"strings"
	"testing"

	"github.com/gohugoio/hugo/common/loggers"
	"github.com/gohugoio/hugo/config/testconfig"
	"github.com/gohugoio/hugo/markup/converter/hooks"
	"github.com/gohugoio/hugo/markup/goldmark"

	"github.com/gohugoio/hugo/markup/converter"

	qt "github.com/frankban/quicktest"
)

var nopGetRenderer = func(t hooks.RendererType, id any) any { return nil }

func TestToc(t *testing.T) {
	c := qt.New(t)

	content := `
# Header 1

## First h2---now with typography!

Some text.

### H3

Some more text.

## Second h2

And then some.

### Second H3

#### First H4

`
	p, err := goldmark.Provider.New(
		converter.ProviderConfig{
			Conf:   testconfig.GetTestConfig(nil, nil),
			Logger: loggers.NewDefault(),
		})
	c.Assert(err, qt.IsNil)
	conv, err := p.New(converter.DocumentContext{})
	c.Assert(err, qt.IsNil)
	b, err := conv.Convert(converter.RenderContext{Src: []byte(content), RenderTOC: true, GetRenderer: nopGetRenderer})
	c.Assert(err, qt.IsNil)
	tocHTML := b.(converter.TableOfContentsProvider).TableOfContents().ToHTML(2, 3, false)
	got := string(tocHTML)
	c.Assert(got, qt.Equals, `<nav id="TableOfContents">
  <ul>
    <li><a href="#first-h2---now-with-typography">First h2&mdash;now with typography!</a>
      <ul>
        <li><a href="#h3">H3</a></li>
      </ul>
    </li>
    <li><a href="#second-h2">Second h2</a>
      <ul>
        <li><a href="#second-h3">Second H3</a></li>
      </ul>
    </li>
  </ul>
</nav>`, qt.Commentf(got))
}

func TestEscapeToc(t *testing.T) {
	c := qt.New(t)

	safeP, _ := goldmark.Provider.New(
		converter.ProviderConfig{
			Conf:   safeConf(),
			Logger: loggers.NewDefault(),
		})
	unsafeP, _ := goldmark.Provider.New(
		converter.ProviderConfig{
			Conf:   unsafeConf(),
			Logger: loggers.NewDefault(),
		})
	safeConv, _ := safeP.New(converter.DocumentContext{})
	unsafeConv, _ := unsafeP.New(converter.DocumentContext{})

	content := strings.Join([]string{
		"# A < B & C > D",
		"# A < B & C > D <div>foo</div>",
		"# *EMPHASIS*",
		"# `echo codeblock`",
	}, "\n")
	// content := ""
	b, err := safeConv.Convert(converter.RenderContext{Src: []byte(content), RenderTOC: true, GetRenderer: nopGetRenderer})
	c.Assert(err, qt.IsNil)
	tocHTML := b.(converter.TableOfContentsProvider).TableOfContents().ToHTML(1, 2, false)
	got := string(tocHTML)
	c.Assert(got, qt.Equals, `<nav id="TableOfContents">
  <ul>
    <li><a href="#a--b--c--d">A &lt; B &amp; C &gt; D</a></li>
    <li><a href="#a--b--c--d-divfoodiv">A &lt; B &amp; C &gt; D <!-- raw HTML omitted -->foo<!-- raw HTML omitted --></a></li>
    <li><a href="#emphasis"><em>EMPHASIS</em></a></li>
    <li><a href="#echo-codeblock"><code>echo codeblock</code></a></li>
  </ul>
</nav>`, qt.Commentf(got))

	b, err = unsafeConv.Convert(converter.RenderContext{Src: []byte(content), RenderTOC: true, GetRenderer: nopGetRenderer})
	c.Assert(err, qt.IsNil)
	tocHTML = b.(converter.TableOfContentsProvider).TableOfContents().ToHTML(1, 2, false)
	got = string(tocHTML)
	c.Assert(got, qt.Equals, `<nav id="TableOfContents">
  <ul>
    <li><a href="#a--b--c--d">A &lt; B &amp; C &gt; D</a></li>
    <li><a href="#a--b--c--d-divfoodiv">A &lt; B &amp; C &gt; D <div>foo</div></a></li>
    <li><a href="#emphasis"><em>EMPHASIS</em></a></li>
    <li><a href="#echo-codeblock"><code>echo codeblock</code></a></li>
  </ul>
</nav>`, qt.Commentf(got))
}