import { Mark, markInputRule, markPasteRule, CommandSpec } from '@tiptap/core'
import { MarkSpec } from 'prosemirror-model'
import VerEx from 'verbal-expressions'

declare module '@tiptap/core/src/Editor' {
  interface Editor {
    code(): Editor,
  }
}

export default class Code extends Mark {

  name = 'code'

  schema(): MarkSpec {
    return {
      excludes: '_',
      parseDOM: [
        { tag: 'code' },
      ],
      toDOM: () => ['code', 0],
    }
  }

  commands(): CommandSpec {
    return {
      code: next => () => {
        this.editor.toggleMark(this.name)
        next()
      },
    }
  }

  keys() {
    return {
      'Mod-`': () => this.editor.code()
    }
  }

  inputRules() {
    const regex = VerEx()
      .add('(?:^|\\s)')
      .beginCapture()
      .find('`')
      .beginCapture()
      .somethingBut('`')
      .endCapture()
      .find('`')
      .endCapture()
      .endOfLine()

    return markInputRule(regex, this.type)
  }

  pasteRules() {
    const regex = VerEx()
      .add('(?:^|\\s)')
      .beginCapture()
      .find('`')
      .beginCapture()
      .somethingBut('`')
      .endCapture()
      .find('`')
      .endCapture()

    return markPasteRule(regex, this.type)
  }

}