<template>
  <view class="b-content">
    <view class="navbar">
      <!-- 循环出头部tab栏 -->
      <view
        v-for="(item, index) in navList"
        :key="index"
        class="nav-item"
        @click="handleTabClick(index)"
        ><text :class="{ current: tabCurrentIndex === index }">{{
          item.text
        }}</text></view
      >
    </view>
    <swiper
      :current="tabCurrentIndex"
      class="swiper-box"
      duration="300"
      @change="changeTab"
    >
      <swiper-item
        class="tab-content"
        v-for="(navItem, navIndex) in navList"
        :key="navIndex"
      >
        <scroll-view
          class="list-scroll-content"
          scroll-y
          @scrolltolower="loadData"
        >
          <!-- 空白页 -->
          <u-empty
            mode="coupon"
            text="暂无优惠券了"
            v-if="navItem.whetherEmpty"
          ></u-empty>

          <!-- 数据 -->
          <view
            v-if="navItem.dataList && coupon"
            class="coupon-item"
            :class="{ 'coupon-used': navIndex != 0 }"
            v-for="(coupon, index) in navItem.dataList"
            :key="index"
          >
            <view class="left">
              <view class="wave-line">
                <view
                  class="wave"
                  v-for="(item, index) in 12"
                  :key="index"
                ></view>
              </view>
              <view class="message">
                <view class="price" v-if="coupon.couponType == 'DISCOUNT'"
                  >{{ coupon.discount }}折</view
                >
                <view class="price" v-else>{{ coupon.price }}元</view>
                <view class="sub-price"
                  >满{{ coupon.consumeThreshold | unitPrice }}可用</view
                >
              </view>
              <view class="circle circle-top"></view>
              <view class="circle circle-bottom"></view>
            </view>
            <view class="right" v-if="coupon">
              <view class="content">
                <view class="title-1">{{ coupon.title }}</view>
                <view class="title-2"
                  >使用平台：{{
                    coupon.scopeType == "ALL" && coupon.storeId == "0"
                      ? "全平台"
                      : coupon.scopeType == "PORTION_CATEGORY"
                      ? "仅限品类"
                      : coupon.storeName == "platform"
                      ? "全平台"
                      : coupon.storeName + ""
                  }}使用</view
                >
                <view v-if="coupon.endTime">{{ coupon.endTime }}</view>
                <view @click="couponDetail(coupon)"
                  >详细说明
                  <u-icon
                    style="float: right; margin-top: 10rpx"
                    name="arrow-right"
                  ></u-icon>
                </view>
              </view>
              <view class="jiao-1" v-if="navIndex == 0">
                <text class="text-1">新到</text>
                <text class="text-2" v-if="coupon.used_status == 1"
                  >将过期</text
                >
              </view>
              <image
                class="no-icon"
                v-if="navIndex == 1"
                src="@/static/img/used.png"
              ></image>
              <image
                class="no-icon"
                v-if="navIndex == 2"
                src="@/static/img/overdue.png"
              ></image>
              <view
                class="receive"
                v-if="navIndex == 0"
                @click="useItNow(coupon)"
              >
                <text>立即</text><br />
                <text>使用</text>
              </view>
              <view class="bg-quan"> 券 </view>
            </view>
          </view>
          <uni-load-more :status="navItem.loadStatus"></uni-load-more>
        </scroll-view>
      </swiper-item>
    </swiper>
  </view>
</template>

<script>
import { getMemberCoupons } from "@/api/members.js";

export default {
  data() {
    return {
      tabCurrentIndex: 0, //tab栏下标默认为0 未使用
      navList: [
        //每个tab存储的信息
        {
          text: "未使用",
          loadStatus: "more",
          dataList: [],
          params: {
            memberCouponStatus: "NEW",
            pageNumber: 1,
            pageSize: 10,
            status: 1,
          },
          whetherEmpty: false,
        },
        {
          text: "已使用",
          loadStatus: "more",
          dataList: [],
          params: {
            memberCouponStatus: "USED",
            pageNumber: 1,
            pageSize: 10,
            status: 2,
          },
          whetherEmpty: false,
        },
        {
          text: "已过期",
          loadStatus: "more",
          dataList: [],
          params: {
            memberCouponStatus: "EXPIRE",
            pageNumber: 1,
            pageSize: 10,
            status: 3,
          },
          whetherEmpty: false,
        },
      ],
      couponList: [], //优惠券列表
    };
  },

  onShow() {
    this.navList[this.tabCurrentIndex].params.pageNumber = 1;
    this.navList[this.tabCurrentIndex].dataList = [];
    this.getData();
  },

  watch: {
    /**
     * 监听切换顶部tab栏实现刷新数据
     */
    tabCurrentIndex(val) {
      if (this.navList[val].dataList.length == 0) this.getData();
    },
  },
  methods: {
    /**
     * 顶部tab点击
     */
    handleTabClick(index) {
      this.tabCurrentIndex = index;
    },

    /**
     * 读取优惠券
     */
    getData() {
      uni.showLoading({
        title: "加载中",
      });
      let index = this.tabCurrentIndex;
      getMemberCoupons(this.navList[index].params).then((res) => {
        uni.stopPullDownRefresh();
        if (res.data.success) {
          let data = res.data.result.records;
          if (data.length == 0) {
            if (res.data.pageNumber == 1) {
              this.navList[index].whetherEmpty = true;
            } else {
              this.navList[index].loadStatus = "noMore";
            }
          } else if (data.length < 10) {
            this.navList[index].loadStatus = "noMore";
            this.navList[index].dataList.push(...data);
          } else {
            this.navList[index].dataList.push(...data);
          }
        }
        uni.hideLoading();
      });
    },

    /**
     * 切换tab
     */
    changeTab(e) {
      this.tabCurrentIndex = e.target.current;
    },

    /**
     * 加载数据
     */
    loadData() {
      let index = this.tabCurrentIndex;
      if (this.navList[index].loadStatus != "noMore") {
        this.navList[index].params.pageNumber++;
        this.getData();
      }
    },

    /**
     * 立即使用优惠券
     */
    useItNow(item) {
      uni.navigateTo({
        url: `/pages/navigation/search/searchPage?promotionsId=${item.couponId}&promotionType=COUPON`,
      });
    },

    /**
     * 优惠券详情
     */
    couponDetail(item) {
      uni.navigateTo({
        url:
          "/pages/cart/coupon/couponDetail?item=" +
          encodeURIComponent(JSON.stringify(item)),
      });
    },
  },
};
</script>

<style lang="scss" scoped>
page {
  height: 100%;
}
$item-color: #fff;

.b-content {
  background: $page-color-base;
  height: 100%;
}

.swiper-box {
  height: calc(100vh - 40px);
}

.list-scroll-content {
  height: 100%;
  width: 100%;

  .coupon-item {
    display: flex;
    align-items: center;
    height: 220rpx;
    margin: 20rpx;

    .left {
      height: 100%;
      width: 260rpx;
      background-color: $light-color;
      position: relative;

      .message {
        color: $font-color-white;
        display: flex;
        justify-content: center;
        align-items: center;
        flex-direction: column;
        margin-top: 40rpx;

        view:nth-child(1) {
          font-weight: bold;
          font-size: 60rpx;
        }

        view:nth-child(2) {
          font-size: $font-sm;
        }
      }

      .wave-line {
        height: 220rpx;
        width: 8rpx;
        position: absolute;
        top: 0;
        left: 0;
        background-color: $light-color;
        overflow: hidden;

        .wave {
          width: 8rpx;
          height: 16rpx;
          background-color: #ffffff;
          border-radius: 0 16rpx 16rpx 0;
          margin-top: 4rpx;
        }
      }

      .circle {
        width: 40rpx;
        height: 40rpx;
        background-color: $bg-color;
        position: absolute;
        border-radius: 50%;
        z-index: 111;
      }

      .circle-top {
        top: -20rpx;
        right: -20rpx;
      }

      .circle-bottom {
        bottom: -20rpx;
        right: -20rpx;
      }
    }

    .right {
      display: flex;
      justify-content: space-between;
      align-items: center;
      width: 450rpx;
      font-size: $font-sm;
      height: 100%;
      background-color: #ffffff;
      overflow: hidden;
      position: relative;

      .content {
        color: #666666;
        margin-left: 20rpx;
        line-height: 2em;
        > view:nth-child(1) {
          color: #ff6262;
          font-size: 30rpx;
        }

        .title-1,
        .title-2,
        .title-3 {
          font-size: 25rpx;
        }
      }
      .receive {
        color: #ffffff;
        background-color: $main-color;
        border-radius: 50%;
        width: 86rpx;
        height: 86rpx;
        text-align: center;
        margin-right: 48rpx;
        vertical-align: middle;
        padding-top: 8rpx;
        position: relative;
        z-index: 2;
      }

      .jiao-1 {
        background-color: #ffc71c;
        width: 400rpx;
        transform: rotate(45deg);
        text-align: center;
        position: absolute;
        color: #ffffff;
        right: -130rpx;
        top: 0;
        .text-1 {
          margin-left: 68rpx;
          font-size: 28rpx;
        }
        .text-2 {
          margin-left: 68rpx;
          font-size: 28rpx;
        }
      }
      .no-icon {
        border-radius: 50%;
        width: 86rpx;
        height: 86rpx;
        margin-right: 48rpx;
        position: relative;
        z-index: 2;
      }
      .bg-quan {
        width: 244rpx;
        height: 244rpx;
        border: 6rpx solid $main-color;
        border-radius: 50%;
        opacity: 0.1;
        color: $main-color;
        text-align: center;
        padding-top: 30rpx;
        font-size: 130rpx;
        position: absolute;
        right: -54rpx;
        bottom: -60rpx;
      }
    }
  }
}

.navbar {
  display: flex;
  height: 80rpx;
  padding: 0 5px;
  background: #fff;
  color: $light-color;
  box-shadow: 0 1px 5px rgba(0, 0, 0, 0.06);
  position: relative;
  z-index: 10;

  .nav-item {
    flex: 1;
    height: 100%;
    font-size: 26rpx;
    color: $light-color;
    position: relative;
    text-align: center;
    text {
      line-height: 80rpx;
    }
    .current {
      font-weight: bold;
      font-size: 28rpx;
      &:after {
        content: "";
        position: absolute;
        bottom: 10rpx;
        left: 108rpx;
        width: 30rpx;
        border-bottom: 2px solid $light-color;
      }
    }
  }
}
</style>