<template>
  <div class="mpvue-picker">
    <div :class="{'pickerMask':showPicker}" @click="maskClick" catchtouchmove="true"></div>
    <div class="mpvue-picker-content " :class="{'mpvue-picker-view-show':showPicker}">
      <div class="mpvue-picker__hd" catchtouchmove="true">
        <div class="mpvue-picker__action" @click="pickerCancel">取消</div>
        <div class="mpvue-picker__action" :style="{color:themeColor}" @click="pickerConfirm">确定</div>
      </div>
      <picker-view indicator-style="height: 40px;" class="mpvue-picker-view" :value="pickerValue" @change="pickerChange">
        <block>
          <picker-view-column>
            <div class="picker-item" v-for="(item,index) in provinceDataList" :key="index">{{item.label}}</div>
          </picker-view-column>
          <picker-view-column>
            <div class="picker-item" v-for="(item,index) in cityDataList" :key="index">{{item.label}}</div>
          </picker-view-column>
          <picker-view-column>
            <div class="picker-item" v-for="(item,index) in areaDataList" :key="index">{{item.label}}</div>
          </picker-view-column>
        </block>
      </picker-view>
    </div>
  </div>
</template>

<script>
import {provinceData,cityData,areaData,cityInfoList,setCityData} from './city-data/province.js';
import * as loginApi from '@/apis/login.js'
//import cityData from './city-data/city.js';
//import areaData from './city-data/area.js';
//let provinceData =[];
//let cityData = [];
//let areaData = [];
let _self ;
export default {
	 
  data() {
    return {
      pickerValue: [16,6,0],
      provinceDataList: [],
      cityDataList: [],
      areaDataList: [],
	   
			/* 是否显示控件 */
			showPicker: false,
    };
  },
  created() {
	  _self = this;
	  if(provinceData.length<=0){
		  loginApi.getCityList().then(function(data){
//		  	console.log('获取城市成功'+JSON.stringify(data));
		  	if(data.result &&  data.data){
		  		setCityData(data.data);
		  		//_self.$refs.mpvuebirtydayCityPicker.setCityData(data.data);		
		  		//console.log('province data '+JSON.stringify(provinceData))
		  	}
			_self.init()
			
		  },function(err){
		  	console.log('获取城市列表错误'+JSON.stringify(err))
		  })		
	  }else
	  {
		this.init()
		  
	  }
	//console.log('mpvueCityPicker created')
  },
  props: {
	 
	AreaListDefault:{
		type: Array,
		default(){
			return []
		}
	},
    /* 默认值 */
    pickerValueDefault: {
      type: Array,
      default(){
				return [16, 6, 0]
			}
    },
    /* 主题色 */
    themeColor: String
  },
	watch:{
		pickerValueDefault(){
			this.init();
		}
	},
  methods: {
	       
		init() {
			//console.log('省'+JSON.stringify(provinceData));
			//console.log('市'+JSON.stringify(cityData));
			//console.log('区'+JSON.stringify(areaData));
			
			console.log('mpvueCityPicker init'+JSON.stringify(this.pickerValueDefault))
			if(this.pickerValueDefault.length == 0)
				this.pickerValueDefault  = [16,6,0];
			this.handPickValueDefault(); // 对 pickerValueDefault 做兼容处理
			this.provinceDataList = provinceData;
			//console.log('provinces'+JSON.stringify(this.provinceDataList))
			//console.log('省'+JSON.stringify(this.pickerValueDefault))
			this.cityDataList = cityData[this.pickerValueDefault[0]];
			this.areaDataList = areaData[this.pickerValueDefault[0]][this.pickerValueDefault[1]];
			//console.log('citys'+JSON.stringify(this.cityDataList))
			//console.log('area'+JSON.stringify(this.areaDataList))
			this.pickerValue = this.pickerValueDefault;
		},
		getProvinceDataListLength(){
			return this.provinceDataList.length;
		},
		getCityDataListLength(){
			return this.cityDataList.length;
		},
		getAreaDataListLength(){
			return this.areaDataList.length;
		},
		
    show() {
      setTimeout(() => {
        this.showPicker = true;
      }, 0);
    },
    maskClick() {
      this.pickerCancel();
    },
    pickerCancel() {
      this.showPicker = false;
      this._$emit('onCancel');
    },
    pickerConfirm(e) {
      this.showPicker = false;
      this._$emit('onConfirm');
    },
    showPickerView() {
      this.showPicker = true;
    },
    handPickValueDefault() {
	
      //console.log('mpvueCityPicker handPickValueDefault')
	  console.log('默认树'+JSON.stringify(this.pickerValueDefault))
	  console.log('省'+JSON.stringify(this.pickerValue))
	  
      if (this.pickerValueDefault !== [0, 0, 0]) {
        if (this.pickerValueDefault[0] > provinceData.length - 1) {
          this.pickerValueDefault[0] = provinceData.length - 1;
		  
		  console.log('省索引'+JSON.stringify(this.pickerValueDefault[0]))
        }
//		console.log('handPickValueDefault 1'+JSON.stringify(cityData));
//		console.log('pickerValueDefault[1]' +JSON.stringify(this.pickerValueDefault));
		if(this.pickerValueDefault.length>1)
		{
			if (this.pickerValueDefault[1] > cityData[this.pickerValueDefault[0]].length - 1) {
			  this.pickerValueDefault[1] = cityData[this.pickerValueDefault[0]].length - 1;
			  console.log('市索引'+JSON.stringify(this.pickerValueDefault[1]))
			}
		}
		//console.log('cityData[this.pickerValueDefault[0]].length' +JSON.stringify(cityData[this.pickerValueDefault[0]].length));
		
		//console.log('handPickValueDefault 2');
		if(this.pickerValueDefault.length>2)
		{
			if (this.pickerValueDefault[2] > areaData[this.pickerValueDefault[0]][this.pickerValueDefault[1]].length - 1) {
			  this.pickerValueDefault[2] = areaData[this.pickerValueDefault[0]][this.pickerValueDefault[1]].length - 1;
 			   console.log('区索引'+JSON.stringify(this.pickerValueDefault[2]))
			}
		}
		//console.log('handPickValueDefault 3');
      }
    },
    pickerChange(e) {
      let changePickerValue = e.mp.detail.value;
      if (this.pickerValue[0] !== changePickerValue[0]) {
        // 第一级发生滚动
        this.cityDataList = cityData[changePickerValue[0]];
        this.areaDataList = areaData[changePickerValue[0]][0];
		
        changePickerValue[1] = 0;
        changePickerValue[2] = 0;
      } else if (this.pickerValue[1] !== changePickerValue[1]) {
        // 第二级滚动
        this.areaDataList =
          areaData[changePickerValue[0]][changePickerValue[1]];
        changePickerValue[2] = 0;
      }
      this.pickerValue = changePickerValue;
      this._$emit('onChange');
    },
    _$emit(emitName) {
      let pickObj = {
        label: this._getLabel(),
        value: this.pickerValue,
        cityCode: this._getCityCode()
      };
      this.$emit(emitName, pickObj);
    },
    _getLabel() {
		if(this.pickerValue[0]>=this.provinceDataList.length)
			return;
		if(this.pickerValue[1]>=this.cityDataList.length)
			return;
		if(this.pickerValue[2]>=this.areaDataList.length)
			return;
      let pcikerLabel =
        this.provinceDataList[this.pickerValue[0]].label +
        '-' +
        this.cityDataList[this.pickerValue[1]].label +
        '-' +
        this.areaDataList[this.pickerValue[2]].label;
      return pcikerLabel;
    },
    _getCityCode() {
	if(this.pickerValue[0]>=this.provinceDataList.length)
		return;
	if(this.pickerValue[1]>=this.cityDataList.length)
		return;
	if(this.pickerValue[2]>=this.areaDataList.length)
		return;
      return this.areaDataList[this.pickerValue[2]].value;
    }
  }
};
</script>

<style>
.pickerMask {
  position: fixed;
  z-index: 1000;
  top: 0;
  right: 0;
  left: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.6);
}
.mpvue-picker-content {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  transition: all 0.3s ease;
  transform: translateY(100%);
  z-index: 3000;
}
.mpvue-picker-view-show {
  transform: translateY(0);
}
.mpvue-picker__hd {
  display: flex;
  padding: 9px 15px;
  background-color: #fff;
  position: relative;
  text-align: center;
  font-size: 17px;
}
.mpvue-picker__hd:after {
  content: ' ';
  position: absolute;
  left: 0;
  bottom: 0;
  right: 0;
  height: 1px;
  border-bottom: 1px solid #e5e5e5;
  color: #e5e5e5;
  transform-origin: 0 100%;
  transform: scaleY(0.5);
}
.mpvue-picker__action {
  display: block;
  flex: 1;
  color: #1aad19;
}
.mpvue-picker__action:first-child {
  text-align: left;
  color: #888;
}
.mpvue-picker__action:last-child {
  text-align: right;
}
.picker-item {
  text-align: center;
  line-height: 40px;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 16px;
}
.mpvue-picker-view {
  position: relative;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 238px;
  background-color: rgba(255, 255, 255, 1);
}
</style>
