// components/luck-view/luck.js
//计数器
var interval = null;

//值越大旋转时间越长  即旋转速度
var intime = 50;
//值越大旋转时间越长  即旋转速度
var defaultIndex = 0;
Component({
  /**
   * 组件的属性列表
   */
  properties: {

    prizesList: {
        type: Object,
        value: {}
      }

  },

  /**
   * 组件的初始数据
   */
  data: {
      color: [0.5, 0.5, 0.5, 0.5, 0.5, 0.5, 0.5, 0.5],
      //9张奖品图片
    images: ['/static/images/coupon/yohostore@2x.png', '/static/images/coupon/yohobuy@2x.png', '/static/images/coupon/little@2x.png', '/static/images/coupon/green@2x.png', '/static/images/coupon/coffee@2x.png', '/static/images/icons/default-avatar.png', '/static/images/icons/info@2x.png', '/static/images/icons/fail.png', '/static/images/coupon/yohobuy@2x.png'],
    btnconfirm: '/static/images/activity/start_h@3x.png',
      clickLuck: 'clickLuck',
      luckPosition: 0,
  },
  attached() {
    // 第二种方式通过组件的生命周期函数执行代码
    this.loadAnimation();
  },

  /**
   * 组件的方法列表
   */
  methods: {
    input: function (e) {
      var data = e.detail.value;
      this.setData({
        luckPosition: data
      })
    },
    //点击抽奖按钮
    clickLuck: function () {

      var e = this;

      //判断中奖位置格式
      if (e.data.luckPosition == null || isNaN(e.data.luckPosition) || e.data.luckPosition > 7) {
        wx.showModal({
          title: '提示',
          content: '请填写正确数值',
          showCancel: false,
        })
        return;
      }

      //设置按钮不可点击
      e.setData({
        btnconfirm: '/static/images/activity/start_h@3x.png',
        clickLuck: '',
      })
      //清空计时器
      clearInterval(interval);
      var index = 0;
      console.log(e.data.color[0]);
      //循环设置每一项的透明度
      interval = setInterval(function () {
        if (index > 7) {
          index = 0;
          e.data.color[7] = 0.5
        } else if (index != 0) {
          e.data.color[index - 1] = 0.5
        }
        e.data.color[index] = 1
        e.setData({
          color: e.data.color,
        })
        index++;
      }, intime);

      //模拟网络请求时间  设为两秒
      var stoptime = 2000;
      setTimeout(function () {
        e.stop(e.data.luckPosition);
      }, stoptime)

    },
    stop: function (which) {
      var e = this;
      //清空计数器
      clearInterval(interval);
      //初始化当前位置
      var current = -1;
      var color = e.data.color;
      for (var i = 0; i < color.length; i++) {
        if (color[i] == 1) {
          current = i;
        }
      }
      //下标从1开始
      var index = current + 1;

      e.stopLuck(which, index, intime, 10);
    },
    /**
 * which:中奖位置
 * index:当前位置
 * time：时间标记
 * splittime：每次增加的时间 值越大减速越快
 */
    stopLuck: function (which, index, time, splittime) {
      var e = this;
      defaultIndex = index;
      //值越大出现中奖结果后减速时间越长
      var color = e.data.color;
      setTimeout(function () {
        //重置前一个位置
        if (index > 7) {
          index = 0;
          color[7] = 0.5
        } else if (index != 0) {
          color[index - 1] = 0.5
        }
        //当前位置为选中状态
        color[index] = 1
        e.setData({
          color: color,
        })
        //如果旋转时间过短或者当前位置不等于中奖位置则递归执行
        //直到旋转至中奖位置
        if (time < 400 || index != which) {
          //越来越慢
          splittime++;
          time += splittime;
          //当前位置+1
          index++;
          e.stopLuck(which, index, time, splittime);
        } else {
          //1秒后显示弹窗
          setTimeout(function () {
            if (which == 1 || which == 3 || which == 5 || which == 7) {
              //中奖
              wx.showModal({
                title: '提示',
                content: '恭喜中奖',
                showCancel: false,
                success: function (res) {
                  if (res.confirm) {
                    //设置按钮可以点击
                    e.setData({
                      btnconfirm: '/static/images/icons/gototop.png',
                      clickLuck: 'clickLuck',
                    })
                    e.loadAnimation();
                  }
                }
              })
            } else {
              //中奖
              wx.showModal({
                title: '提示',
                content: '很遗憾未中奖',
                showCancel: false,
                success: function (res) {
                  if (res.confirm) {
                    //设置按钮可以点击
                    e.setData({
                      btnconfirm: '/static/images/icons/gototop.png',
                      clickLuck: 'clickLuck',
                    })
                    e.loadAnimation();
                  }
                }
              })
            }
          }, 1000);
        }
      }, time);
      console.log(time);
    },
    //进入页面时缓慢切换
    loadAnimation: function () {
      var e = this;
      var index = defaultIndex;
      if (interval){
        clearInterval(interval);
      }
      interval = setInterval(function () {
        if (index > 7) {
          index = 0;
          e.data.color[7] = 0.5
        } else if (index != 0) {
          e.data.color[index - 1] = 0.5
        }
        e.data.color[index] = 1
        e.setData({
          color: e.data.color,
        })
        index++;
      }, 1000);
      // }  
    }
  }
})