import { createEffect, onCleanup, onMount, Show } from 'solid-js'
import {
  createEditorTransaction,
  createTiptapEditor,
  useEditorHTML,
  useEditorIsEmpty,
  useEditorIsFocused
} from 'solid-tiptap'
import { useEditorContext } from '../../context/editor'
import { Document } from '@tiptap/extension-document'
import { Text } from '@tiptap/extension-text'
import { Paragraph } from '@tiptap/extension-paragraph'
import { Bold } from '@tiptap/extension-bold'
import { Button } from '../_shared/Button'
import { useLocalize } from '../../context/localize'
import { Icon } from '../_shared/Icon'
import { Popover } from '../_shared/Popover'
import { Italic } from '@tiptap/extension-italic'
import { Modal } from '../Nav/Modal'
import { hideModal, showModal } from '../../stores/ui'
import { Blockquote } from '@tiptap/extension-blockquote'
import { CustomImage } from './extensions/CustomImage'
import { UploadModalContent } from './UploadModalContent'
import { imageProxy } from '../../utils/imageProxy'
import { clsx } from 'clsx'
import styles from './SimplifiedEditor.module.scss'
import { Placeholder } from '@tiptap/extension-placeholder'
import { InsertLinkForm } from './InsertLinkForm'
import { Link } from '@tiptap/extension-link'

type Props = {
  initialContent?: string
  onSubmit: (text: string) => void
  placeholder: string
  submitButtonText?: string
  quoteEnabled?: boolean
  imageEnabled?: boolean
  setClear?: boolean
  smallHeight?: boolean
  submitByEnter?: boolean
  submitByShiftEnter?: boolean
}

const SimplifiedEditor = (props: Props) => {
  const { t } = useLocalize()

  const editorElRef: {
    current: HTMLDivElement
  } = {
    current: null
  }
  const {
    actions: { setEditor }
  } = useEditorContext()

  const editor = createTiptapEditor(() => ({
    element: editorElRef.current,
    editorProps: {
      attributes: {
        class: styles.simplifiedEditorField
      }
    },
    extensions: [
      Document,
      Text,
      Paragraph,
      Bold,
      Italic,
      Link.configure({
        openOnClick: false
      }),
      Blockquote.configure({
        HTMLAttributes: {
          class: styles.blockQuote
        }
      }),
      CustomImage.configure({
        HTMLAttributes: {
          class: styles.uploadedImage
        }
      }),
      Placeholder.configure({
        emptyNodeClass: styles.emptyNode,
        placeholder: props.placeholder
      })
    ],
    content: props.initialContent ?? null
  }))

  setEditor(editor)
  const isEmpty = useEditorIsEmpty(() => editor())
  const isFocused = useEditorIsFocused(() => editor())

  const isActive = (name: string) =>
    createEditorTransaction(
      () => editor(),
      (ed) => {
        return ed && ed.isActive(name)
      }
    )

  const html = useEditorHTML(() => editor())
  const isBold = isActive('bold')
  const isItalic = isActive('italic')
  const isLink = isActive('link')
  const isBlockquote = isActive('blockquote')

  const renderImage = (src: string) => {
    editor()
      .chain()
      .focus()
      .setImage({ src: imageProxy(src) })
      .run()
    hideModal()
  }

  const handleClear = () => {
    editor().commands.clearContent(true)
  }
  createEffect(() => {
    if (props.setClear) {
      editor().commands.clearContent(true)
    }
  })

  const handleKeyDown = async (event) => {
    if (isEmpty() || !editor().isFocused) {
      return
    }

    if (
      event.code === 'Enter' &&
      ((props.submitByEnter && !event.shiftKey) || (props.submitByShiftEnter && event.shiftKey))
    ) {
      event.preventDefault()
      props.onSubmit(html())
      handleClear()
    }

    if (event.code === 'KeyK' && (event.metaKey || event.ctrlKey) && !editor().state.selection.empty) {
      event.preventDefault()
      showModal('editorInsertLink')
    }
  }

  onMount(() => {
    window.addEventListener('keydown', handleKeyDown)
  })

  onCleanup(() => {
    window.removeEventListener('keydown', handleKeyDown)
  })

  const handleInsertLink = () => !editor().state.selection.empty && showModal('editorInsertLink')
  return (
    <div
      class={clsx(styles.SimplifiedEditor, {
        [styles.smallHeight]: props.smallHeight,
        [styles.isFocused]: isFocused() || !isEmpty()
      })}
    >
      <div ref={(el) => (editorElRef.current = el)} />
      <div class={styles.controls}>
        <div class={styles.actions}>
          <Popover content={t('Bold')}>
            {(triggerRef: (el) => void) => (
              <button
                ref={triggerRef}
                type="button"
                class={clsx(styles.actionButton, { [styles.active]: isBold() })}
                onClick={() => editor().chain().focus().toggleBold().run()}
              >
                <Icon name="editor-bold" />
              </button>
            )}
          </Popover>
          <Popover content={t('Italic')}>
            {(triggerRef: (el) => void) => (
              <button
                ref={triggerRef}
                type="button"
                class={clsx(styles.actionButton, { [styles.active]: isItalic() })}
                onClick={() => editor().chain().focus().toggleItalic().run()}
              >
                <Icon name="editor-italic" />
              </button>
            )}
          </Popover>
          <Popover content={t('Add url')}>
            {(triggerRef: (el) => void) => (
              <button
                ref={triggerRef}
                type="button"
                onClick={handleInsertLink}
                class={clsx(styles.actionButton, { [styles.active]: isLink() })}
              >
                <Icon name="editor-link" />
              </button>
            )}
          </Popover>
          <Show when={props.quoteEnabled}>
            <Popover content={t('Add blockquote')}>
              {(triggerRef: (el) => void) => (
                <button
                  ref={triggerRef}
                  type="button"
                  onClick={() => editor().chain().focus().toggleBlockquote().run()}
                  class={clsx(styles.actionButton, { [styles.active]: isBlockquote() })}
                >
                  <Icon name="editor-quote" />
                </button>
              )}
            </Popover>
          </Show>
          <Show when={props.imageEnabled}>
            <Popover content={t('Add image')}>
              {(triggerRef: (el) => void) => (
                <button
                  ref={triggerRef}
                  type="button"
                  onClick={() => showModal('uploadImage')}
                  class={clsx(styles.actionButton, { [styles.active]: isBlockquote() })}
                >
                  <Icon name="editor-image-dd-full" />
                </button>
              )}
            </Popover>
          </Show>
        </div>
        <div class={styles.buttons}>
          <Button value={t('Cancel')} variant="secondary" disabled={isEmpty()} onClick={handleClear} />
          <Button
            value={props.submitButtonText ?? t('Send')}
            variant="primary"
            disabled={isEmpty()}
            onClick={() => props.onSubmit(html())}
          />
        </div>
      </div>
      <Modal variant="narrow" name="editorInsertLink">
        <InsertLinkForm editor={editor()} onClose={() => hideModal()} />
      </Modal>
      <Show when={props.imageEnabled}>
        <Modal variant="narrow" name="uploadImage">
          <UploadModalContent
            onClose={(value) => {
              renderImage(value)
            }}
          />
        </Modal>
      </Show>
    </div>
  )
}

export default SimplifiedEditor // "export default" need to use for asynchronous (lazy) imports in the comments tree