import React from 'react';
import Quill from 'quill';
import ReactQuill from 'react-quill';
import 'react-quill/dist/quill.snow.css';
import './index.less';
import { generateUUID } from '../../services/Tools';

const Delta = Quill.imports.delta;
const Parchment = Quill.imports.parchment;

const defaultContainer = [
  [{ header: '1' }, { header: '2' }],
  ['bold', 'underline', 'blockquote'],
  [{ color: [] }, { background: [] }],
  [{ list: 'ordered' }, { list: 'bullet' }, { indent: '-1' }, { indent: '+1' }],
  // ['image'],
  // ['link', 'video'],
  ['clean'],
];

const formats = [
  'header',
  'font',
  'size',
  'bold',
  'italic',
  'underline',
  'strike',
  'blockquote',
  'color',
  'list',
  'bullet',
  'indent',
  'link',
  'image',
  // 'video',
];
class ListAttributor extends Parchment.Attributor.Style {
  value(node) {
    // console.log(node);
    const style = node.style || {};
    return style.listStyleType;
    // return super.value(node);
  }

  add(node, value) {
    // console.log(node, value);
    node.style.listStyleType = value;
    return true;
  }
}

const ListClass = new Parchment.Attributor.Class('list-style-customer', 'ql-list', {
  scope: Parchment.Scope.BLOCK_BLOT,
});
const ListStyleType = new ListAttributor('list-style', 'list-style-type', {
  scope: Parchment.Scope.BLOCK_BLOT,
});
// console.log(ListStyleType);
Quill.register(ListStyleType, true);
Quill.register(ListClass, true);

class Editor extends React.Component {
  constructor(props) {
    super(props);
    this.quillRef = null;
    this.state = {};
    this.loading = 0;
    this.modules = {
      toolbar: {
        container: [
        ],
        handlers: {},
      },
      clipboard: {
        // toggle to add extra line breaks when pasting HTML:
        matchVisual: true,
        matchers: [
          ['ol', (node, delta) => {
            const style = node.style || {};
            if (style.listStyleType) {
              delta = delta.reduce((d, op) => {
                // if (op.attributes && op.attributes['list-style']) {
                //   return d.push(op);
                // }
                return d.insert(op.insert, Object.assign({}, op.attributes, { 'list-style': ListStyleType.value(node), 'list-style-customer': 'customer' }));
              }, new Delta());
            }
            return delta;
          }],
        ],
      },
    };
    this.modules = Object.assign(this.modules, props.modules);
    if (this.modules.toolbar.container.length === 0) {
      this.modules.toolbar.container = defaultContainer.map(row => row);
      if (props.onUpload) {
        this.modules.toolbar.container.unshift(['image']);
      }
    }
    // console.log(this.modules);
    this.modules.toolbar.handlers.image = () => this.image();
    Object.keys(this.modules.toolbar.handlers).forEach(key => {
      const handler = this.modules.toolbar.handlers[key];
      this.modules.toolbar.handlers[key] = () => {
        handler(this.quillRef.getEditor());
      };
    });
    this.formats = Object.assign({}, formats, props.formats);
  }

  progress(data) {
    return done => {
      if (this.props.onProgress) this.props.onProgress(data);
      done();
    };
  }

  image() {
    const self = this;
    this.container = this.quillRef.editingArea;
    const quill = this.quillRef.getEditor();
    let fileInput = this.container.querySelector('input.ql-image[type=file]'); // fileInput

    if (fileInput == null) {
      fileInput = document.createElement('input');
      fileInput.setAttribute('type', 'file');
      fileInput.setAttribute('accept', 'image/png, image/gif, image/jpeg, image/bmp, image/x-icon');
      fileInput.classList.add('ql-image');
      fileInput.addEventListener('change', () => {
        if (fileInput.files != null && fileInput.files[0] != null) {
          // getSelection 选择当前光标位置咯 然后在下一个range.index用它自带的embed媒介插入方式插入你已经存储在阿里上的图片了
          const range = quill.getSelection(true);
          const file = fileInput.files[0];
          const suffix = file.name.substring(file.name.lastIndexOf('.')).toLowerCase();
          const name = generateUUID();
          self.props
            .onUpload(file, self.props.path, self.progress, `${self.props.path}/${name}${suffix}`)
            .then(data => {
              self.setState({ uploading: false, load: self.state.load + 1 });
              quill.insertEmbed(range.index, 'image', data.url || data);
              quill.setSelection(range.index + 1);
            })
            .catch(err => {
              self.setState({ uploading: false, load: self.state.load + 1 });
              if (self.props.onError) self.props.onError(err);
            });
        }
      });
    }
    fileInput.click();
  }

  render() {
    // console.log(this.props.value);
    return (
      <div>
        <ReactQuill
          ref={el => {
            this.quillRef = el;
          }}
          style={this.props.style}
          theme={this.props.theme || 'snow'}
          onChange={(content, delta, source, editor) => {
            if (this.props.onChange) this.props.onChange(content, delta, source, editor);
          }}
          defaultValue={this.props.defaultValue || ''}
          value={this.props.value || ''}
          modules={this.modules}
          formats={this.formats}
          placeholder={this.props.placeholder}
        />
      </div>
    );
  }
}


export default Editor;