import React, { Component } from 'react';
import { Chart, Geom, Coord, Shape, Tooltip } from 'bizcharts';
import DataSet from '@antv/data-set';
import Debounce from 'lodash-decorators/debounce';
import Bind from 'lodash-decorators/bind';
import classNames from 'classnames';
import autoHeight from '../autoHeight';
import styles from './index.less';

/* eslint no-underscore-dangle: 0 */
/* eslint no-param-reassign: 0 */

const imgUrl = 'https://gw.alipayobjects.com/zos/rmsportal/gWyeGLCdFFRavBGIDzWk.png';

export interface ITagCloudProps {
  data: Array<{
    name: string;
    value: number;
  }>;
  height?: number;
  className?: string;
  style?: React.CSSProperties;
}

interface ITagCloudState {
  dv: any;
  height?: number;
  width: number;
}

class TagCloud extends Component<ITagCloudProps, ITagCloudState> {
  state = {
    dv: null,
    height: 0,
    width: 0,
  };
  isUnmount!: boolean;
  requestRef!: number;

  root: HTMLDivElement | undefined;
  imageMask: HTMLImageElement | undefined;

  componentDidMount() {
    requestAnimationFrame(() => {
      this.initTagCloud();
      this.renderChart(this.props);
    });
    window.addEventListener('resize', this.resize, { passive: true });
  }

  componentDidUpdate(preProps?: ITagCloudProps) {
    const { data } = this.props;
    if (preProps && JSON.stringify(preProps.data) !== JSON.stringify(data)) {
      this.renderChart(this.props);
    }
  }
  componentWillUnmount() {
    this.isUnmount = true;
    window.cancelAnimationFrame(this.requestRef);
    window.removeEventListener('resize', this.resize);
  }
  resize = () => {
    this.requestRef = requestAnimationFrame(() => {
      this.renderChart(this.props);
    });
  };
  saveRootRef = (node: HTMLDivElement) => {
    this.root = node;
  };

  initTagCloud = () => {
    function getTextAttrs(cfg: {
      x?: any;
      y?: any;
      style?: any;
      opacity?: any;
      origin?: any;
      color?: any;
    }) {
      return Object.assign({}, cfg.style, {
        fillOpacity: cfg.opacity,
        fontSize: cfg.origin._origin.size,
        rotate: cfg.origin._origin.rotate,
        text: cfg.origin._origin.text,
        textAlign: 'center',
        fontFamily: cfg.origin._origin.font,
        fill: cfg.color,
        textBaseline: 'Alphabetic',
      });
    }

    (Shape as any).registerShape('point', 'cloud', {
      drawShape(
        cfg: { x: any; y: any },
        container: { addShape: (arg0: string, arg1: { attrs: any }) => void },
      ) {
        const attrs = getTextAttrs(cfg);
        return container.addShape('text', {
          attrs: Object.assign(attrs, {
            x: cfg.x,
            y: cfg.y,
          }),
        });
      },
    });
  };

  @Bind()
  @Debounce(500)
  renderChart(nextProps: ITagCloudProps) {
    // const colors = ['#1890FF', '#41D9C7', '#2FC25B', '#FACC14', '#9AE65C'];
    const { data, height } = nextProps || this.props;

    if (data.length < 1 || !this.root) {
      return;
    }

    const h = height;
    const w = this.root.offsetWidth;

    const onload = () => {
      const dv = new DataSet.View().source(data);
      const range = dv.range('value');
      const [min, max] = range;
      dv.transform({
        type: 'tag-cloud',
        fields: ['name', 'value'],
        imageMask: this.imageMask,
        font: 'Verdana',
        size: [w, h], // 宽高设置最好根据 imageMask 做调整
        padding: 0,
        timeInterval: 5000, // max execute time
        rotate() {
          return 0;
        },
        fontSize(d: { value: number }) {
          // eslint-disable-next-line
          return Math.pow((d.value - min) / (max - min), 2) * (17.5 - 5) + 5;
        },
      });

      if (this.isUnmount) {
        return;
      }

      this.setState({
        dv,
        width: w,
        height: h,
      });
    };

    if (!this.imageMask) {
      this.imageMask = new Image();
      this.imageMask.crossOrigin = '';
      this.imageMask.src = imgUrl;

      this.imageMask.onload = onload;
    } else {
      onload();
    }
  }

  render() {
    const { className, height } = this.props;
    const { dv, width, height: stateHeight } = this.state;

    return (
      <div
        className={classNames(styles.tagCloud, className)}
        style={{ width: '100%', height }}
        ref={this.saveRootRef}
      >
        {dv && (
          <Chart
            width={width}
            height={stateHeight}
            data={dv}
            padding={0}
            scale={{
              x: { nice: false },
              y: { nice: false },
            }}
          >
            <Tooltip showTitle={false} />
            <Coord reflect="y" />
            <Geom
              type="point"
              position="x*y"
              color="text"
              shape="cloud"
              tooltip={[
                'text*value',
                function trans(text, value) {
                  return { name: text, value };
                },
              ]}
            />
          </Chart>
        )}
      </div>
    );
  }
}

export default autoHeight()(TagCloud);
