<template>
  <!-- 顶部导航栏 -->
  <view class="nav-bar">
    <view class="nav-item active">全部</view>
    <view class="nav-item">机械设备</view>
    <view class="nav-item">零部件模型</view>
    <view class="nav-item">交通运输</view>
    <view class="nav-item">电子产品</view>
    <view class="expand-btn" @tap="toggleCategoryMenu">
      <text class="expand-icon">≡</text>
    </view>
  </view>

  <!-- 全部分类浮窗 -->
  <view
    class="category-popup"
    v-if="showCategoryMenu"
    @tap.stop="closeCategoryMenu"
  >
    <view class="popup-content" @tap.stop>
      <view class="category-list">
        <view
          :key="index"
          v-for="(section, index) in categoryList"
          class="category-item"
          @tap="selectCategory(section)"
        >
          {{ section.name }}
        </view>
      </view>
    </view>
  </view>

  <!-- 筛选选项 -->
  <view class="filter-bar">
    <view class="filter-item"> 软件分类 <text class="icon-down">∨</text> </view>
    <view class="filter-item"> 图纸类型 <text class="icon-down">∨</text> </view>
  </view>
</template>

<script>
export default {
  data() {
    return {
      showCategoryMenu: false,
      categoryList: [
        { name: "机械设备", active: false },
        { name: "零部件模型", active: false },
        { name: "交通运输", active: false },
        { name: "电子产品", active: false },
        { name: "机械设备", active: false },
        { name: "零部件模型", active: false },
        { name: "交通运输", active: false },
        { name: "电子产品", active: false },
        { name: "机械设备", active: false },
        { name: "零部件模型", active: false },
        { name: "交通运输", active: false },
        { name: "电子产品", active: false },
      ],
    };
  },
  methods: {
    toggleCategoryMenu() {
      this.showCategoryMenu = !this.showCategoryMenu;
    },
    closeCategoryMenu() {
      this.showCategoryMenu = false;
    },
    selectCategory(section) {
      // 演示用：显示toast提示
    },
  },
  onLoad(options) {
    console.log(options);
    // 监听点击事件，点击页面空白处关闭菜单
    uni.$on("page-click", () => {
      if (this.showCategoryMenu) {
        this.closeCategoryMenu();
      }
    });
  },
  onUnload() {
    // 移除事件监听
    uni.$off("page-click");
  },
};
</script>

<style scoped lang="scss">
// 变量定义
$primary-color: #007aff;
$text-color: #333;
$secondary-text: #666;
$light-text: #999;
$bg-color: #fff;
$white: #fff;
$border-color: #eee;
$border-radius: 10rpx;
$mask-bg: rgba(0, 0, 0, 0.5);
.nav-bar {
  display: flex;
  background-color: $white;
  padding: 10rpx 0;
  position: relative;
  padding-right: 60rpx;

  .nav-item {
    flex: 1;
    text-align: center;
    font-size: 25rpx;
    padding: 15rpx 0;

    &.active {
      color: $primary-color;
      font-weight: bold;
    }
  }
  .expand-btn {
    position: absolute;
    right: 0;
    top: 0;
    height: 100%;
    width: 80rpx;
    display: flex;
    align-items: center;
    justify-content: center;

    .expand-icon {
      font-size: 40rpx;
      color: $text-color;
    }
  }
}

// 分类浮窗样式
.category-popup {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: $mask-bg;
  z-index: 999;
  display: flex;
  flex-direction: column;
  align-items: center;

  .popup-content {
    width: 100%;
    max-height: 80vh;
    background-color: $white;
    animation: slideDown 0.3s ease;
    overflow-y: auto;

    .category-list {
      padding: 20rpx;
      display: flex;
      flex-wrap: wrap;

      .category-item {
        padding: 8rpx 12.94rpx;
        box-sizing: border-box;
        margin-right: 3%;
        margin-bottom: 20rpx;
        text-align: center;
        font-size: 25rpx;
        background-color: $bg-color;
        border-radius: 4rpx;
        border: 1px solid $border-color;
        color: #666;
      }
    }
  }
}
// 滑入动画
@keyframes slideDown {
  from {
    transform: translateY(-100%);
    opacity: 0.5;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

.filter-bar {
  display: flex;
  padding: 20rpx 30rpx;

  .filter-item {
    margin-right: 30rpx;
    font-size: 25rpx;
    color: $secondary-text;
  }

  .icon-down {
    font-size: 24rpx;
  }
}
</style>
