<template>
  <div id="china_map_box">
    <div id="china_map" ref="map_wrap"></div>
  </div>
</template>

<script>
import * as echarts from 'echarts'

import {chinaGeoJson} from './areaJson/chinaGeoJson'
export default {
  props: {
    lineMarkerData: null,
    className: {
      type: String,
      default: 'chart'
    },
    id: {
      type: String,
      default: 'chart'
    },
    width: {
      type: String,
      default: '1052px'
    },
    height: {
      type: String,
      default: '500px'
    }
  },
  data() {
    return {
      dataMax: null // 取数组中的最大值
    }
  },

  created() {},
  watch: {},

  mounted() {
    console.log(1)

    setTimeout(() => {
      this.init()
    }, 50)
  },
  methods: {
    init() {
      var myChart = echarts.init(document.getElementById('china_map'))
      myChart.showLoading()
      let geoJson = chinaGeoJson
      echarts.registerMap('china', geoJson)
      myChart.hideLoading()
      var geoCoordMap = {
        台湾: [121.5135, 25.0308],
        黑龙江: [127.9688, 45.368],
        内蒙古: [110.3467, 41.4899],
        吉林: [125.8154, 44.2584],
        北京市: [116.4551, 40.2539],
        辽宁: [123.1238, 42.1216],
        河北: [114.4995, 38.1006],
        天津: [117.4219, 39.4189],
        山西: [112.3352, 37.9413],
        陕西: [109.1162, 34.2004],
        甘肃: [103.5901, 36.3043],
        宁夏: [106.3586, 38.1775],
        青海: [101.4038, 36.8207],
        新疆: [87.9236, 43.5883],
        西藏: [91.11, 29.97],
        四川: [103.9526, 30.7617],
        重庆: [108.384366, 30.439702],
        山东: [117.1582, 36.8701],
        河南: [113.4668, 34.6234],
        江苏: [118.8062, 31.9208],
        安徽: [117.29, 32.0581],
        湖北: [114.3896, 30.6628],
        浙江: [119.5313, 29.8773],
        福建: [119.4543, 25.9222],
        江西: [116.0046, 28.6633],
        湖南: [113.0823, 28.2568],
        贵州: [106.6992, 26.7682],
        云南: [102.9199, 25.4663],
        广东: [113.12244, 23.009505],
        广西: [108.479, 23.1152],
        海南: [110.3893, 19.8516],
        上海: [121.4648, 31.2891]
      }
      var data = [
        { name: '北京', value: 199 },
        { name: '天津', value: 42 },
        { name: '河北', value: 102 },
        { name: '山西', value: 81 },
        { name: '内蒙古', value: 47 },
        { name: '辽宁', value: 67 },
        { name: '吉林', value: 82 },
        { name: '黑龙江', value: 123 },
        { name: '上海', value: 24 },
        { name: '江苏', value: 92 },
        { name: '浙江', value: 114 },
        { name: '安徽', value: 109 },
        { name: '福建', value: 116 },
        { name: '江西', value: 91 },
        { name: '山东', value: 119 },
        { name: '河南', value: 137 },
        { name: '湖北', value: 116 },
        { name: '湖南', value: 114 },
        { name: '重庆', value: 91 },
        { name: '四川', value: 125 },
        { name: '贵州', value: 62 },
        { name: '云南', value: 83 },
        { name: '西藏', value: 9 },
        { name: '陕西', value: 80 },
        { name: '甘肃', value: 56 },
        { name: '青海', value: 10 },
        { name: '宁夏', value: 18 },
        { name: '新疆', value: 180 },
        { name: '广东', value: 123 },
        { name: '广西', value: 59 },
        { name: '海南', value: 14 }
      ]
      var max = 480
      var min = 9 // todo
      var maxSize4Pin = 100
      var minSize4Pin = 20

      var convertData = function(data) {
        var res = []
        for (var i = 0; i < data.length; i++) {
          var geoCoord = geoCoordMap[data[i].name]
          if (geoCoord) {
            res.push({
              name: data[i].name,
              value: geoCoord.concat(data[i].value)
            })
          }
        }
        return res
      }

      let option = {
        backgroundColor: {
          type: 'linear',
          x: 0,
          y: 0,
          x2: 1,
          y2: 1,
          colorStops: [
            {
              offset: 0,
              color: '#0f378f' // 0% 处的颜色
            },
            {
              offset: 1,
              color: '#00091a' // 100% 处的颜色
            }
          ],
          globalCoord: false // 缺省为 false
        },
        title: {
          top: 20,
          text: '“学校毕业生各省份人数分布情况分析',
          subtext: '',
          x: 'center',
          textStyle: {
            color: '#ccc'
          }
        },

        tooltip: {
          trigger: 'item',
          formatter: function(params) {
            if (typeof params.value[2] === 'undefined') {
              return params.name + ' : ' + params.value
            } else {
              return params.name + ' : ' + params.value[2]
            }
          }
        },
        /*   legend: {
            orient: 'vertical',
            y: 'bottom',
            x: 'right',
             data:['pm2.5'],
            textStyle: {
                color: '#fff'
            }
        }, */
        legend: {
          orient: 'vertical',
          y: 'bottom',
          x: 'right',
          data: ['pm2.5'],
          textStyle: {
            color: '#fff'
          }
        },
        visualMap: {
          show: false,
          min: 0,
          max: 500,
          left: 'left',
          top: 'bottom',
          text: ['高', '低'], // 文本，默认为数值文本
          calculable: true,
          seriesIndex: [1],
          inRange: {}
        },
        geo: {
          map: 'china',
          show: true,
          roam: true,
          label: {
            normal: {
              show: false
            },
            emphasis: {
              show: false
            }
          },
          itemStyle: {
            normal: {
              areaColor: '#3a7fd5',
              borderColor: '#0a53e9', // 线
              shadowColor: '#092f8f', // 外发光
              shadowBlur: 20
            },
            emphasis: {
              areaColor: '#0a2dae' // 悬浮区背景
            }
          }
        },
        series: [
          {
            symbolSize: 5,
            label: {
              normal: {
                formatter: '{b}',
                position: 'right',
                show: true
              },
              emphasis: {
                show: true
              }
            },
            itemStyle: {
              normal: {
                color: '#fff'
              }
            },
            name: 'light',
            type: 'scatter',
            coordinateSystem: 'geo',
            data: convertData(data)
          },
          {
            type: 'map',
            map: 'china',
            geoIndex: 0,
            aspectScale: 0.75, // 长宽比
            showLegendSymbol: false, // 存在legend时显示
            label: {
              normal: {
                show: false
              },
              emphasis: {
                show: false,
                textStyle: {
                  color: '#fff'
                }
              }
            },
            roam: true,
            itemStyle: {
              normal: {
                areaColor: '#031525',
                borderColor: '#FFFFFF'
              },
              emphasis: {
                areaColor: '#2B91B7'
              }
            },
            animation: false,
            data: data
          },
          {
            name: 'Top 5',
            type: 'scatter',
            coordinateSystem: 'geo',
            symbol: 'pin',
            symbolSize: [50, 50],
            label: {
              normal: {
                show: true,
                textStyle: {
                  color: '#fff',
                  fontSize: 9
                },
                formatter(value) {
                  return value.data.value[2]
                }
              }
            },
            itemStyle: {
              normal: {
                color: '#D8BC37' // 标志颜色
              }
            },
            data: convertData(data),
            showEffectOn: 'render',
            rippleEffect: {
              brushType: 'stroke'
            },
            hoverAnimation: true,
            zlevel: 1
          }
        ]
      }
      myChart.setOption(option)
    }
  }
}
</script>

<style lang="scss" scoped>
#china_map_box {
  height: 100%;
  width: 100%;
  min-height: 600px;
  overflow: hidden;
  position: relative;
  padding-bottom: 21px;
}
#china_map {
  height: 100%;
}
#china_map_box .china_map_logo {
  position: absolute;
  top: 0;
  left: 0;
}
</style>
