import { PolygonLayer, Scene } from '@antv/l7';
import { GaodeMap } from '@antv/l7-maps';
import * as React from 'react';

function convertRGB2Hex(rgb: number[]) {
  return (
    '#' + rgb.map((r) => ('0' + Math.floor(r).toString(16)).slice(-2)).join('')
  );
}

export default class MultiPolygon extends React.Component {
  private gui: dat.GUI;
  private $stats: Node;
  private scene: Scene;

  public componentWillUnmount() {
    this.scene.destroy();
  }

  public async componentDidMount() {
    const response = await fetch(
      'https://gw.alipayobjects.com/os/basement_prod/f79485d8-d86f-4bb3-856d-537b586be06e.json',
    );
    const scene = new Scene({
      id: 'map',
      map: new GaodeMap({
        pitch: 0,
        style: 'dark',
        center: [121.775374, 31.31067],
        zoom: 14.1,
      }),
    });

    const layer = new PolygonLayer({})
      .source(await response.json())
      .shape('fill')
      .color('red')
      .style({
        opacity: 1.0,
      });
    scene.addLayer(layer);
  }

  public render() {
    return (
      <div
        id="map"
        style={{
          position: 'absolute',
          top: 0,
          left: 0,
          right: 0,
          bottom: 0,
        }}
      />
    );
  }
}