import React from 'react'
import { useEditor, EditorContent } from '@tiptap/react'
import Document from '@tiptap/extension-document'
import Paragraph from '@tiptap/extension-paragraph'
import Text from '@tiptap/extension-text'
import CodeBlockLowlight from '@tiptap/extension-code-block-lowlight'
// load all highlight.js languages
import lowlight from 'lowlight'

// load specific languages only
// import lowlight from 'lowlight/lib/core'
// import javascript from 'highlight.js/lib/languages/javascript'
// lowlight.registerLanguage('javascript', javascript)

import './styles.scss'

export default () => {
  const editor = useEditor({
    extensions: [
      Document,
      Paragraph,
      Text,
      CodeBlockLowlight.configure({
        lowlight,
      }),
    ],
    content: `
        <p>
          That’s a boring paragraph followed by a fenced code block:
        </p>
        <pre><code class="language-javascript">for (var i=1; i <= 20; i++)
{
  if (i % 15 == 0)
    console.log("FizzBuzz");
  else if (i % 3 == 0)
    console.log("Fizz");
  else if (i % 5 == 0)
    console.log("Buzz");
  else
    console.log(i);
}</code></pre>
        <p>
          Press Command/Ctrl + Enter to leave the fenced code block and continue typing in boring paragraphs.
        </p>
      `,
  })

  if (!editor) {
    return null
  }

  return (
    <>
      <button
        onClick={() => editor.chain().focus().toggleCodeBlock().run()}
        className={editor.isActive('codeBlock') ? 'is-active' : ''}
      >
        toggleCodeBlock
      </button>
      <button
        onClick={() => editor.chain().focus().setCodeBlock().run()}
        disabled={editor.isActive('codeBlock')}
      >
        setCodeBlock
      </button>

      <EditorContent editor={editor} />
    </>
  )
}