// model.js
var area = require('../utils/area.js')

var areaInfo = []; //所有省市区县数据

var provinces = []; //省

var citys = []; //城市

var countys = []; //区县

var value = [0, 0, 0]; //数据位置下标

var info = {};

function updateAreaData(that, status, e) {
  //获取省份数据
  var getProvinceData = function () {
    var s;
    provinces = [];
    var num = 0;
    for (var i = 0; i < areaInfo.length; i++) {
      s = areaInfo[i];
      if (s.di == "00" && s.xian == "00") {
        provinces[num] = s;
        num++;
      }
    }

    //初始化调一次
    //获取地级市数据
    getCityArr();
    //获取区县数据
    getCountyInfo();

    //模型赋值
    info = {
      item: {
        provinces: provinces,
        citys: citys,
        countys: countys,
        value: value
      }
    }

    animationEvents(that, 200, false, 0);
  }

  // 获取地级市数据
  var getCityArr = function (count = 0) {
    var c;
    citys = [];
    var num = 0;
    for (var i = 0; i < areaInfo.length; i++) {
      c = areaInfo[i];
      if (c.xian == "00" && c.sheng == provinces[count].sheng && c.di != "00") {
        citys[num] = c;
        num++;
      }
    }
    if (citys.length == 0) {
      citys[0] = {
        name: ''
      };
    }
  }

  // 获取区县数据
  var getCountyInfo = function (column0 = 0, column1 = 0) {
    var c;
    countys = [];
    var num = 0;
    for (var i = 0; i < areaInfo.length; i++) {
      c = areaInfo[i];
      if (c.xian != "00" && c.sheng == provinces[column0].sheng && c.di == citys[column1].di) {
        countys[num] = c;
        num++;
      }
    }
    if (countys.length == 0) {
      countys[0] = {
        name: ''
      };
    }
    value = [column0, column1, 0];
  }

  //滑动事件
  var valueChange = function (e, that) {
    var val = e.detail.value
    console.log(e)
    //判断滑动的是第几个column
    //若省份column做了滑动则定位到地级市和区县第一位
    if (value[0] != val[0]) {
      val[1] = 0;
      val[2] = 0;
      getCityArr(val[0]); //获取地级市数据
      getCountyInfo(val[0], val[1]); //获取区县数据
    } else { //若省份column未做滑动，地级市做了滑动则定位区县第一位
      if (value[1] != val[1]) {
        val[2] = 0;
        getCountyInfo(val[0], val[1]); //获取区县数据
      }
    }
    value = val;

    assignmentData(that, that.data.item.show)

    console.log(val);

    //回调
    //callBack(val);

  }

  if (status == 0) {
    area.getAreaInfo(function (arr) {
      areaInfo = arr;
      //获取省份数据
      getProvinceData();

    });
  }
  //滑动事件
  else {
    valueChange(e, that);
  }

}

//动画事件
function animationEvents(that, moveY, show, duration) {
  that.animation = wx.createAnimation({
    transformOrigin: "50% 50%",
    duration: duration,
    timingFunction: "ease",
    delay: 0
  })
  that.animation.translateY(moveY + 'vh').step()
  //赋值
  assignmentData(that, show)

}

//赋值
function assignmentData(that, show) {
  that.setData({
    item: {
      animation: that.animation.export(),
      show: show,
      provinces: provinces,
      citys: citys,
      countys: countys,
      value: value
    }
  })
}

module.exports = {
  updateAreaData: updateAreaData,
  animationEvents: animationEvents
}