import React, { PureComponent } from 'react';

import { HashRouter as Router, Route } from 'react-router-dom';
import { Loading, ConfigProvider } from '@alifd/next';

import Editor from '../framework/editor';
import { EditorConfig, Utils, PluginComponents } from '../framework/definitions';
import { comboEditorConfig, parseSearch } from '../framework/utils';

import defaultConfig from './config/skeleton';
import skeletonUtils from './config/utils';

import TopArea from './layouts/TopArea';
import LeftArea from './layouts/LeftArea';
import CenterArea from './layouts/CenterArea';
import RightArea from './layouts/RightArea';

import './global.scss';

let renderIdx = 0;

export interface SkeletonProps {
  components: PluginComponents;
  config: EditorConfig;
  history: object;
  location: object;
  match: object;
  utils: Utils;
}

export interface SkeletonState {
  initReady: boolean;
  skeletonKey: string;
  __hasError?: boolean;
}

export default class Skeleton extends PureComponent<SkeletonProps, SkeletonState> {
  static displayName = 'LowcodeEditorSkeleton';

  static getDerivedStateFromError() {
    return {
      __hasError: true
    };
  }

  private editor: Editor;

  constructor(props) {
    super(props);

    this.state = {
      initReady: false,
      skeletonKey: `skeleton${renderIdx}`
    };

    this.init();
  }

  componentWillUnmount() {
    this.editor && this.editor.destroy();
  }

  componentDidCatch(err) {
    console.error(err);
  }

  init = (isReset: boolean = false): void => {
    if (this.editor) {
      this.editor.destroy();
    }
    const { utils, config, components } = this.props;
    const editor = (this.editor = new Editor(comboEditorConfig(defaultConfig, config), components, {
      ...skeletonUtils,
      ...utils
    }));
    window.__ctx = {
      editor,
      appHelper: editor
    };
    editor.once('editor.reset', () => {
      this.setState({
        initReady: false
      });
      editor.emit('editor.beforeReset');
      this.init(true);
    });

    this.editor.init().then(() => {
      this.setState(
        {
          initReady: true,
          // 刷新IDE时生成新的skeletonKey保证插件生命周期重新执行
          skeletonKey: isReset ? `skeleton${++renderIdx}` : this.state.skeletonKey
        },
        () => {
          editor.emit('editor.ready');
          editor.emit('ide.ready');
          isReset && editor.emit('ide.afterReset');
        }
      );
    });
  };

  render() {
    const { initReady, skeletonKey, __hasError } = this.state;
    const { location, history, match } = this.props;
    if (__hasError || !this.editor) {
      return 'error';
    }

    location.query = parseSearch(location.search);
    this.editor.set('location', location);
    this.editor.set('history', history);
    this.editor.set('match', match);

    return (
      <ConfigProvider>
        <Loading tip="Loading" size="large" visible={!initReady} shape="fusion-reactor" fullScreen>
          <div className="lowcode-editor" key={skeletonKey}>
            <TopArea editor={this.editor} />
            <div className="lowcode-main-content">
              <LeftArea.Nav editor={this.editor} />
              <LeftArea.Panel editor={this.editor} />
              <CenterArea editor={this.editor} />
              <RightArea editor={this.editor} />
            </div>
          </div>
        </Loading>
      </ConfigProvider>
    );
  }
}