// pages/demo/demo.js
const data = require("./data.js");
// 引入SDK核心类
let QQMapWX = require("../../utils/qqmap-wx-jssdk.min");

// 实例化API核心类
let qqmapsdk = new QQMapWX({
  key: "Y2BBZ-IHRKU-V42VO-BFQEE-K7252-ZBBSF", // 必填
});
Page({
  data: {
    latitude: 31.271729,
    longitude: 121.483641,
    start: {
      address: "上海市虹口区东江湾路444号",
      errMsg: "chooseLocation:ok",
      latitude: 31.271447,
      longitude: 121.480604,
      name: "虹口足球场",
    },
    end: {
      address: "上海市虹口区株洲路258弄",
      errMsg: "chooseLocation:ok",
      latitude: 31.276367,
      longitude: 121.464754,
      name: "意和家园",
    },
  },
  //在Page({})中使用下列代码
  //触发表单提交事件，调用接口
  formSubmit() {
    let { start, end } = this.data;
    if (Object.keys(start).length === 0) {
      wx.showToast({
        title: "请选择起点",
        icon: "none",
        duration: 2000,
      });
      return;
    }
    if (Object.keys(end).length === 0) {
      wx.showToast({
        title: "请选择终点",
        icon: "none",
        duration: 2000,
      });
      return;
    }
    let from = `${start.latitude},${start.longitude}`;
    let to = `${end.latitude},${end.longitude}`;
    //调用距离计算接口
    qqmapsdk.direction({
      mode: "driving", //可选值：'driving'（驾车）、'walking'（步行）、'bicycling'（骑行），不填默认：'driving',可不填
      //from参数不填默认当前地址
      from,
      to,
      success: (res) => {
        let coors = res.result.routes[0].polyline,
          pl = [];
        //坐标解压（返回的点串坐标，通过前向差分进行压缩）
        let kr = 1000000;
        for (let i = 2; i < coors.length; i++) {
          coors[i] = Number(coors[i - 2]) + Number(coors[i]) / kr;
        }
        //将解压后的坐标放入点串数组pl中
        for (let i = 0; i < coors.length; i += 2) {
          pl.push({ latitude: coors[i], longitude: coors[i + 1] });
        }
        //设置polyline属性，将路线显示出来,将解压坐标第一个数据作为起点
        this.drawPolyline(pl);
      },
      fail: function (error) {
        console.error(error);
      },
    });
  },
  drawPolyline(pl) {
    this.setData({
      latitude: pl[0].latitude,
      longitude: pl[0].longitude,
      polyline: [
        {
          points: pl,
          color: "#FF0000DD",
          width: 4,
        },
      ],
    });
  },
  init() {
    let coors = data.result.routes[0].polyline,
      pl = [];
    //坐标解压（返回的点串坐标，通过前向差分进行压缩）
    let kr = 1000000;
    for (let i = 2; i < coors.length; i++) {
      coors[i] = Number(coors[i - 2]) + Number(coors[i]) / kr;
    }
    //将解压后的坐标放入点串数组pl中
    for (let i = 0; i < coors.length; i += 2) {
      pl.push({ latitude: coors[i], longitude: coors[i + 1] });
    }
    //设置polyline属性，将路线显示出来,将解压坐标第一个数据作为起点
    this.drawPolyline(pl);
  },
  getStart() {
    wx.chooseLocation({
      success: (start) => {
        console.log(start);
        this.setData({
          start,
        });
      },
    });
  },
  getEnd() {
    wx.chooseLocation({
      success: (end) => {
        console.log(end);

        this.setData({
          end,
        });
      },
    });
  },
  onLoad() {},
  onShow() {},
});