import Quill from 'quill'
import ReactQuill from 'react-quill'
import 'react-quill/dist/quill.core.css'
import 'react-quill/dist/quill.snow.css'
import QuillEmoji from 'quill-emoji'
import 'quill-emoji/dist/quill-emoji.css'

Quill.register({
  'modules/emoji-toolbar': QuillEmoji.ToolbarEmoji,
  // 'modules/emoji-textarea': QuillEmoji.TextAreaEmoji,
  'modules/emoji-shortname': QuillEmoji.ShortNameEmoji
})

const toolbarContainer = [
  [{ 'size': ['small', false, 'large', 'huge'] }], // custom dropdown
  [{ 'font': [] }],
  [{ 'header': 1 }, { 'header': 2 }],        // custom button values
  ['bold', 'italic', 'underline', 'strike'],    // toggled buttons
  [{ 'align': [] }],
  [{ 'indent': '-1' }, { 'indent': '+1' }],     // outdent/indent
  [{ 'direction': 'rtl' }],             // text direction
  [{ 'script': 'sub' }, { 'script': 'super' }],   // superscript/subscript
  ['blockquote', 'code-block'],

  [{ 'list': 'ordered' }, { 'list': 'bullet' }],
  [{ 'color': [] }, { 'background': [] }],
  ['emoji', 'image', 'video', 'link'],

  ['clean']
]

<ReactQuill
  ref={ref => this.quillRef = ref}
  placeholder="填写活动详情~"
  theme="snow"
  value={this.state.detailTpl}
  onChange={this.handleChangeDetail}
  modules={{
    toolbar: {
      container: toolbarContainer,
      handlers: {
        image: this.imageHandler
      }
    },
    'emoji-toolbar': true,
    // 'emoji-textarea': true,
    'emoji-shortname': true,
  }}
/>

imageHandler = () => {
  this.quillEditor = this.quillRef.getEditor()
  const input = document.createElement('input')
  input.setAttribute('type', 'file')
  input.setAttribute('accept', 'image/*')
  input.click()
  input.onchange = async () => {
    const file = input.files[0]
    const formData = new FormData()
    formData.append('quill-image', file)
    const res = await uploadFile(formData) 
    const range = this.quillEditor.getSelection()
    const link = res.data[0].url

    // this part the image is inserted
    // by 'image' option below, you just have to put src(link) of img here. 
    this.quillEditor.insertEmbed(range.index, 'image', link)
  }
}