<template>
  <view class="store-page">
    <!-- 顶部导航栏 -->
    <NavHeader title="店铺详情" />

    <!-- 顶部店铺信息 -->
    <view class="store-header">
      <view class="store-brand">
        <image
          class="brand-image"
          :src="storeInfo.coverUrl || '/static/service/store-default.png'"
          mode="aspectFill"
        ></image>
      </view>
      <view class="store-info">
        <text class="store-name">{{ storeInfo.name }}</text>
        <view class="store-detail">
          <text class="detail-text">门店地址: {{ storeInfo.address }}</text>
        </view>
        <view class="store-detail">
          <text class="detail-text">联系电话: {{ storeInfo.phone }}</text>
        </view>
        <view class="store-tags-row">
          <view class="store-tags">
            <view class="tag-item tag-pink">会员特惠</view>
            <view class="tag-item tag-orange">{{ categoryLabel }}</view>
          </view>
          <view class="distance-info">
            <image
              class="location-icon"
              src="/static/service/location-icon.png"
              mode="aspectFill"
            ></image>
            <text class="distance-text"
              >距您 {{ storeInfo.distance || "0" }}km</text
            >
          </view>
        </view>
      </view>
    </view>

    <!-- 中间菜单列表（可滑动） -->
    <scroll-view class="menu-list" scroll-y="true">
      <view class="menu-item" v-for="(item, index) in menuList" :key="index">
        <view
          class="checkbox"
          :class="{ checked: item.selected }"
          @click="toggleMenuItem(index)"
        >
          <text v-if="item.selected" class="checkmark">✓</text>
        </view>
        <image
          class="menu-image"
          :src="item.coverUrl || '/static/service/menu-default.png'"
          mode="aspectFill"
        ></image>
        <view class="menu-info">
          <view class="menu-title-row">
            <text class="menu-title">{{ item.name }}</text>
            <view class="discount-badge" v-if="item.discount">
              {{ item.discount }}折
            </view>
          </view>
          <text class="menu-desc">{{ item.description }}</text>
          <view class="menu-price-row">
            <view class="current-price">
              <view class="price-label">现价¥</view>
              <view class="price-text">{{ item.salePrice || 0 }}</view>
            </view>
            <text class="original-price" v-if="item.originalPrice"
              >原价¥{{ item.originalPrice }}</text
            >
            <view class="quantity-control">
              <view
                class="quantity-btn minus"
                :class="{
                  disabled: (item.quantity || 0) <= 0,
                }"
                @click="decreaseQuantity(index)"
                >-</view
              >
              <text class="quantity-number">{{ item.quantity || 0 }}</text>
              <view
                class="quantity-btn plus"
                @click="increaseQuantity(index)"
                >+</view
              >
            </view>
          </view>
        </view>
      </view>
    </scroll-view>

    <!-- 底部结算栏（固定） -->
    <view class="checkout-footer">
      <view class="total-info">
        <text class="total-label">总金额¥</text>
        <text class="total-amount">{{ totalAmount.toFixed(2) }}</text>
        <view class="member-benefit">
          <image
            class="crown-icon"
            src="/static/service/crown-icon.png"
            mode="aspectFill"
          ></image>
          <text class="benefit-text">{{ memberLevelName }}优惠</text>
        </view>
      </view>
      <button
        class="checkout-btn"
        :class="{ disabled: totalAmount <= 0 }"
        :disabled="totalAmount <= 0"
        @click="handleCheckout"
      >
        去结算
      </button>
    </view>
  </view>
</template>
  
  <script>
import { getGuildStoreDetail, getGuildCoupon } from "@/api/service";
import NavHeader from "@/components/NavHeader/NavHeader.vue";

export default {
  components: {
    NavHeader
  },
  data() {
    return {
      storeInfo: {},
      menuList: [],
      categoryLabel: "",
      shopId: null,
      userInfo: {},
    };
  },
  computed: {
    // 计算总金额（只计算选中且数量大于0的商品）
    totalAmount() {
      return this.menuList.reduce((total, item) => {
        if (item.selected && item.quantity > 0) {
          const price = item.salePrice || item.currentPrice || item.price || 0;
          return total + price * item.quantity;
        }
        return total;
      }, 0);
    },
    // 是否有会员优惠
    hasMemberDiscount() {
      return this.menuList.some((item) => item.selected && item.discount);
    },
    // 获取会员等级名称（安全访问）
    memberLevelName() {
      return (this.userInfo && this.userInfo.level && this.userInfo.level.name) || '普通会员';
    },
  },
  onLoad(options) {
    // 从路由参数获取店铺ID和分类标签
    this.shopId = options.id;
    this.categoryLabel = options.categoryLabel;
    this.userInfo = uni.getStorageSync('userInfo') || {};
    if (this.shopId) {
      this.loadStoreData();
    } else {
      uni.showToast({
        title: "店铺信息错误",
        icon: "none",
      });
      setTimeout(() => {
        uni.navigateBack();
      }, 1500);
    }
  },
  methods: {
    // 加载店铺数据
    async loadStoreData() {
      try {
        // 并行加载店铺详情和菜单
        await Promise.all([
          this.loadStoreDetail(this.shopId),
          this.loadStoreMenu(this.shopId),
        ]);
      } catch (error) {
        console.error("加载店铺数据失败:", error);
        uni.showToast({
          title: "加载店铺信息失败",
          icon: "none",
        });
      }
    },

    // 加载店铺详情
    async loadStoreDetail(shopId) {
      try {
        const res = await getGuildStoreDetail(shopId);
        if (res) {
          this.storeInfo = res;
        }
      } catch (error) {
        console.error("加载店铺详情失败:", error);
      }
    },

    // 加载工会优惠券
    async loadStoreMenu(shopId) {
      try {
        const res = await getGuildCoupon({ shopId });
        console.log(res, 11119);
        if (res && res.list) {
          this.menuList = res.list;
        }
      } catch (error) {
        uni.showToast({
          title: error,
          icon: "none",
        });
      }
    },

    // 切换菜单项选择状态
    toggleMenuItem(index) {
      const item = this.menuList[index];
      item.selected = !item.selected;
      if (!item.selected) {
        item.quantity = 0;
      } else if (item.quantity === 0) {
        item.quantity = 1;
      }
    },

    // 增加数量
    increaseQuantity(index) {
      const item = this.menuList[index];
      // 如果未选中，先选中
      if (!item.selected) {
        item.selected = true;
      }
      // 增加数量
      item.quantity = (item.quantity || 0) + 1;
    },

    // 减少数量
    decreaseQuantity(index) {
      const item = this.menuList[index];
      const currentQuantity = item.quantity || 0;
      // 确保数量不能小于0
      if (currentQuantity > 0) {
        item.quantity = currentQuantity - 1;
        // 如果数量减到0，自动取消选中状态
        if (item.quantity === 0) {
          item.selected = false;
        }
      }
    },

    // 去结算
    handleCheckout() {
      if (this.totalAmount <= 0) {
        return;
      }

      // 获取选中的商品
      const selectedItems = this.menuList.filter(
        (item) => item.selected && item.quantity > 0
      );

      if (selectedItems.length === 0) {
        uni.showToast({
          title: "请选择商品",
          icon: "none",
        });
        return;
      }

      // TODO: 跳转到结算页面或提交订单
      console.log("结算商品:", selectedItems);
      console.log("总金额:", this.totalAmount);

      uni.showToast({
        title: `结算金额：¥${this.totalAmount.toFixed(2)}`,
        icon: "none",
        duration: 2000,
      });
    },
  },
};
</script>
  
  <style lang="scss" scoped>
.store-page {
  min-height: 100vh;
  background-color: #e2e8f1;
  display: flex;
  flex-direction: column;
  padding-bottom: 120rpx; // 为底部结算栏留出空间
}

/* 顶部店铺信息 */
.store-header {
  background-color: #ffffff;
  margin: 14rpx 20rpx;
  padding: 40rpx 30rpx 30rpx;
  display: flex;
  align-items: flex-start;
  border-radius: 20rpx;
  margin-bottom: 20rpx;

  .store-brand {
    position: relative;
    width: 140rpx;
    height: 140rpx;
    margin-right: 24rpx;
    flex-shrink: 0;

    .brand-image {
      width: 100%;
      height: 100%;
      border-radius: 12rpx;
    }
  }

  .store-info {
    flex: 1;
    display: flex;
    flex-direction: column;

    .store-name {
      font-family: PingFang-SC, PingFang-SC;
      font-weight: bold;
      font-size: 30rpx;
      color: #1a1819;
    }

    .store-detail {
      .detail-text {
        font-family: PingFang-SC, PingFang-SC;
        font-weight: 500;
        font-size: 22rpx;
        color: #888888;
        line-height: 1.5;
      }
    }

    .store-tags-row {
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-top: 8rpx;

      .store-tags {
        display: flex;
        gap: 12rpx;

        .tag-item {
          padding: 6rpx 16rpx;
          font-size: 20rpx;

          &.tag-pink {
            background-color: rgba(213, 28, 60, 0.1);
            color: #d51c3c;
          }

          &.tag-orange {
            background-color: rgba(255, 107, 0, 0.1);
            color: #ff6b00;
          }
        }
      }

      .distance-info {
        display: flex;
        align-items: center;

        .location-icon {
          width: 17rpx;
          height: 20rpx;
          margin-right: 8rpx;
        }

        .distance-text {
          font-family: PingFang-SC, PingFang-SC;
          font-weight: 500;
          font-size: 22rpx;
          color: #004294;
        }
      }
    }
  }
}

/* 中间菜单列表 */
.menu-list {
  flex: 1;
  overflow-y: auto;
  width: 95%;
  margin: 0 auto;
  min-height: 0;

  .menu-item {
    background-color: #ffffff;
    border-radius: 20rpx;
    padding: 25rpx;
    margin-bottom: 20rpx;
    display: flex;
    align-items: center;
    position: relative;

    .checkbox {
      width: 30rpx;
      height: 30rpx;
      border: 1rpx solid #cccccc;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-right: 19rpx;
      flex-shrink: 0;

      &.checked {
        background-color: #004294;
        border-color: #004294;

        .checkmark {
          color: #ffffff;
          font-size: 28rpx;
          font-weight: bold;
        }
      }
    }

    .menu-image {
      width: 160rpx;
      height: 173rpx;
      border-radius: 10rpx;
      margin-right: 20rpx;
      flex-shrink: 0;
    }

    .menu-info {
      flex: 1;
      display: flex;
      flex-direction: column;
      min-width: 0;

      .menu-title-row {
        display: flex;
        align-items: center;
        margin-bottom: 12rpx;

        .menu-title {
          font-family: PingFang-SC, PingFang-SC;
          font-weight: bold;
          font-size: 28rpx;
          color: #1a1819;
          margin-right: 12rpx;
        }

        .discount-badge {
          border: 1rpx solid #d51c3c;
          color: #d51c3c;
          font-size: 24rpx;
          padding: 6rpx 14rpx;
          font-weight: bold;
        }
      }

      .menu-desc {
        font-family: PingFang-SC, PingFang-SC;
        font-weight: 500;
        font-size: 22rpx;
        color: #888888;
        line-height: 30rpx;
      }

      .menu-price-row {
        display: flex;
        align-items: baseline;
        gap: 10rpx;
        margin-top: 16rpx;

        .current-price {
          display: flex;
          align-items: baseline;
          font-weight: bold;
          font-size: 24rpx;
          color: #d51c3c;
          .price-text {
            font-family: PingFang-SC, PingFang-SC;
            font-weight: bold;
            font-size: 50rpx;
            color: #d51c3c;
          }
        }

        .original-price {
          font-family: PingFang-SC, PingFang-SC;
          font-weight: 500;
          font-size: 20rpx;
          color: #545454;
          text-decoration: line-through;
          background-color: rgba(115, 115, 115, 0.1);
          padding: 7rpx 6rpx;
        }

        .quantity-control {
          display: flex;
          align-items: center;
          gap: 20rpx;
          margin-left: auto;

          .quantity-btn {
            width: 35rpx;
            height: 35rpx;
            border: 1rpx solid #888888;
            line-height: 35rpx;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #333333;
            font-weight: 500;
            background-color: #ffffff;
            border-radius: 4rpx;
          }

          .quantity-number {
            font-family: PingFang-SC, PingFang-SC;
            min-width: 40rpx;
            text-align: center;
            font-weight: 500;
            font-size: 30rpx;
            color: #333333;
          }
        }
      }
    }
  }
}

/* 底部结算栏 */
.checkout-footer {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background-color: #fff;
  padding: 25rpx 20rpx 25rpx 48rpx;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1rpx solid #e2e8f1;
  z-index: 100;

  .total-info {
    display: flex;
    align-items: baseline;

    .total-label {
      font-family: PingFang-SC, PingFang-SC;
      font-weight: 500;
      font-size: 30rpx;
      color: #d51c3c;
    }

    .total-amount {
      font-family: PingFang-SC, PingFang-SC;
      font-weight: bold;
      font-size: 50rpx;
      color: #d51c3c;
    }

    .member-benefit {
      display: flex;
      align-items: center;
      gap: 8rpx;
      margin-left: 12rpx;
      background: rgba(255, 107, 0, 0.1);
      padding: 4rpx 12rpx;
      border-radius: 8rpx;

      .crown-icon {
        width: 23rpx;
        height: 20rpx;
      }

      .benefit-text {
        font-family: PingFang-SC, PingFang-SC;
        font-weight: 500;
        font-size: 20rpx;
        color: #ff6b00;
      }
    }
  }

  .checkout-btn {
    color: #ffffff;
    font-family: PingFang-SC, PingFang-SC;
    font-weight: bold;
    font-size: 28rpx;
    border: none;
    background: #004294;
    border-radius: 35rpx;
    position: absolute;
    right: 20rpx;
  }
}
</style>
  