<template>
  <view class="history-page">
    <header-bar title="历史记录" @leftClick="handleLeftClick"></header-bar>

    <view class="tab-container">
      <view class="custom-tab">
        <view
          v-for="tab in tabList"
          :key="tab.id"
          :class="['tab-item', { active: activeTab === tab.id }]"
          @click="switchTab(tab.id)"
        >
          <text class="tab-text">{{ tab.name }}</text>
          <view class="tab-underline" v-if="activeTab === tab.id"></view>
        </view>
      </view>

      <view class="more-icon-container" @click="toggleMoreMenu">
        <image
          class="more-icon"
          src="/static/common/images/icon-more.png"
          mode="scaleToFill"
        ></image>
      </view>

      <!-- 右上角弹出菜单：批量删除 -->
      <view v-if="isMoreMenuVisible" class="more-menu" @click.stop>
        <view class="menu-card" @click="handleBatchDeleteClick">
          <!-- <image
            class="menu-icon"
            src="/static/common/images/icon_delete.png"
            mode="widthFix"
          /> -->
          <u-icon name="trash" color="#FF647D" size="28"></u-icon>
          <text class="menu-text">批量删除</text>
        </view>
      </view>
    </view>

    <!-- 点击其他区域关闭弹层 -->
    <view v-if="isMoreMenuVisible" class="overlay" @click="hideMoreMenu"></view>

    <!-- 内容区域包装器 -->
    <view class="content-wrapper">
      <!-- 历史记录列表（按日期分组，日期固定在上方） -->
      <view class="history-list">
        <view
          class="date-group"
          v-for="(group, groupIndex) in currentHistoryList"
          :key="groupIndex"
        >
          <view class="date-header">{{ group.id }}</view>

          <view
            class="history-item"
            v-for="item in group.conversation"
            :key="item.id"
          >
            <!-- 批量删除模式下的选择框 -->
            <view
              class="item-checkbox"
              v-if="isBatchDeleteMode"
              @click="toggleItemSelection(item.id)"
            >
              <view
                class="checkbox"
                :class="{ checked: selectedItems.includes(item.id) }"
              >
                <text class="checkmark" v-if="selectedItems.includes(item.id)"
                  >✓</text
                >
              </view>
            </view>

            <!-- 历史记录内容 -->
            <view class="item-content">
              <view class="item-header">
                <view class="item-icon">
                  <image
                    class="icon-image"
                    src="/static/common/images/icon_chat2.png"
                  />
                </view>
                <view class="item-title">{{ item.title }}</view>
              </view>
              <!-- <view class="item-description">{{ item.content }}</view> -->
            </view>
          </view>
        </view>
      </view>
    </view>

    <!-- 批量删除操作栏 -->
    <view class="batch-actions" v-if="isBatchDeleteMode">
      <view class="select-all-container" @click="toggleSelectAll">
        <view class="checkbox" :class="{ checked: selectAll }">
          <text class="checkmark" v-if="selectAll">✓</text>
        </view>
        <text class="select-all-text">全选</text>
      </view>
      <view class="function-btn">
        <view class="cancel-btn" @click="cancelBatchDelete">取消</view>
        <view class="delete-btn" @click="batchDelete">删除</view>
      </view>
    </view>

    <!-- 提示 -->
    <u-toast ref="uToast" />
  </view>
</template>

<script>
import HeaderBar from "@/components/HeaderBar.vue";

export default {
  components: {
    HeaderBar,
  },
  data() {
    return {
      activeTab: "1", // 当前激活的tab
      tabList: [
        { id: "1", name: "AI咨询" },
        { id: "2", name: "人工咨询" },
      ],
      isBatchDeleteMode: false, // 是否为批量删除模式
      isMoreMenuVisible: false, // 右上角更多菜单是否可见
      selectedItems: [], // 选中的项目
      selectAll: false, // 是否全选
      chatHistoryAI: [], // ai咨询历史记录
      chatHistoryTeacher: [], // 人工咨询历史记录
    };
  },
  computed: {
    // 当前tab的历史记录
    currentHistoryList() {
      if (this.activeTab === "1") {
        return this.chatHistoryAI;
      } else {
        return this.chatHistoryTeacher;
      }
    },

    currentHistoryItems() {
      const groups = this.currentHistoryList || [];
      const items = [];

      groups.forEach((group) => {
        const conversation = (group && group.conversation) || [];
        conversation.forEach((item) => items.push(item));
      });

      return items;
    },

    currentHistoryItemIds() {
      return this.currentHistoryItems.map((item) => item.id);
    },
  },

  onLoad() {
    this.getChatHistoryList();
    // this.GetDialogueList_User();
  },

  methods: {
    resetBatchState() {
      this.selectedItems = [];
      this.selectAll = false;
      this.isBatchDeleteMode = false;
    },

    // 获取ai历史记录
    async getChatHistoryList() {
      this.$u.api.GetConversationPage().then((res) => {
        this.chatHistoryAI = res.data;
        // if (this.chatHistoryAI.length > 0) {
        //   this.chatHistoryAI = res.data.map((group) => {
        //     // 对每个组的conversation数组进行倒序排序
        //     return {
        //       ...group,
        //       conversation: group.conversation.sort((a, b) => {
        //         // 将日期字符串转换为时间戳并比较（倒序）
        //         return (
        //           new Date(b.startTime).getTime() -
        //           new Date(a.startTime).getTime()
        //         );
        //       }),
        //     };
        //   });
        // }
        console.log("this.chatHistoryAI", this.chatHistoryAI);
      });
    },

    // 获取人工咨询数据
    async GetDialogueList_User() {
      this.$u.api.GetDialogueList_UserApi().then((res) => {
        this.chatHistoryTeacher = res.data;
        // if (this.chatHistoryTeacher.length > 0) {
        //   this.chatHistoryTeacher = res.data.map((group) => {
        //     // 对每个组的conversation数组进行倒序排序
        //     return {
        //       ...group,
        //       conversation: group.conversation.sort((a, b) => {
        //         // 将日期字符串转换为时间戳并比较（倒序）
        //         return (
        //           new Date(b.startTime).getTime() -
        //           new Date(a.startTime).getTime()
        //         );
        //       }),
        //     };
        //   });
        // }
      });
    },

    // 格式化时间显示
    formatTime(timestamp) {
      const now = new Date();
      const date = new Date(timestamp);
      const today = new Date(now.getFullYear(), now.getMonth(), now.getDate());
      const itemDate = new Date(
        date.getFullYear(),
        date.getMonth(),
        date.getDate()
      );

      // 计算时间差
      const diffTime = today.getTime() - itemDate.getTime();
      const diffDays = Math.floor(diffTime / (1000 * 60 * 60 * 24));

      // 今天
      if (diffDays === 0) {
        return `${String(date.getMonth() + 1).padStart(2, "0")}/${String(
          date.getDate()
        ).padStart(2, "0")}`;
      }

      // 本周内（1-6天前）
      if (diffDays > 0 && diffDays <= 6) {
        const weekdays = [
          "周日",
          "周一",
          "周二",
          "周三",
          "周四",
          "周五",
          "周六",
        ];
        return weekdays[date.getDay()];
      }

      // 今年但不是本周
      if (date.getFullYear() === now.getFullYear()) {
        return `${String(date.getMonth() + 1).padStart(2, "0")}/${String(
          date.getDate()
        ).padStart(2, "0")}`;
      }

      // 往年
      return `${date.getFullYear()}/${String(date.getMonth() + 1).padStart(
        2,
        "0"
      )}/${String(date.getDate()).padStart(2, "0")}`;
    },

    handleLeftClick() {
      uni.navigateBack();
    },

    switchTab(tab) {
      if (this.activeTab === tab) return;

      // 批量删除模式下，切换tab时，清空选中项
      if (this.isBatchDeleteMode) {
        this.selectedItems = [];
        this.selectAll = false;
      }

      this.activeTab = tab;
      // 切换tab时，刷新当前tab的历史记录
      if (tab === "1") {
        this.getChatHistoryList();
      } else {
        this.GetDialogueList_User();
      }
    },

    // 显示/隐藏右上角更多菜单
    toggleMoreMenu() {
      if (this.isBatchDeleteMode) return;

      this.isMoreMenuVisible = !this.isMoreMenuVisible;
    },
    // 点击蒙层隐藏更多菜单
    hideMoreMenu() {
      this.isMoreMenuVisible = false;
    },
    // 取消批量删除模式
    cancelBatchDelete() {
      this.resetBatchState();
    },

    // 点击“批量删除”菜单项，进入批量删除模式
    handleBatchDeleteClick() {
      this.isMoreMenuVisible = false;
      if (!this.isBatchDeleteMode) {
        this.toggleBatchDeleteMode();
      }
    },

    // 切换批量删除模式
    toggleBatchDeleteMode() {
      this.isBatchDeleteMode = !this.isBatchDeleteMode;
      if (!this.isBatchDeleteMode) {
        // 退出批量删除模式时清空选中项
        this.selectedItems = [];
        this.selectAll = false;
      }
    },

    // 切换单个项目选中状态
    toggleItemSelection(itemId) {
      const index = this.selectedItems.indexOf(itemId);
      if (index > -1) {
        this.selectedItems.splice(index, 1);
      } else {
        this.selectedItems.push(itemId);
      }
      // 更新全选状态
      this.selectAll =
        this.selectedItems.length > 0 &&
        this.selectedItems.length === this.currentHistoryItemIds.length;
    },

    // 切换全选状态
    toggleSelectAll() {
      const allIds = this.currentHistoryItemIds || [];
      if (!allIds.length) {
        this.selectAll = false;
        this.selectedItems = [];
        return;
      }

      this.selectAll = !this.selectAll;
      if (this.selectAll) {
        this.selectedItems = [...allIds];
      } else {
        this.selectedItems = [];
      }
    },

    // 批量删除选中项
    async batchDelete() {
      if (this.selectedItems.length === 0) {
        this.$refs.uToast.show({
          title: "请选择要删除的记录",
          type: "warning",
        });
        return;
      }

      const deleteIds = [...this.selectedItems];
      const isAiTab = this.activeTab === "1";

      try {
        let res = null;
        if (isAiTab) {
          res = await this.$u.api.DeleteDialogueManagement({ id: deleteIds });
        } else {
          res = await this.$u.api.DeleteDialogueApi({ dialogueManagementIds: deleteIds });
        }

        if (res && res.succeed === true) {
          this.resetBatchState();

          if (isAiTab) {
            this.getChatHistoryList();
          } else {
            this.GetDialogueList_User();
          }

          this.$refs.uToast.show({
            title: "删除成功",
            type: "success",
          });
          return;
        }

        this.$refs.uToast.show({
          title: (res && (res.msg || res.message)) || "删除失败",
          type: "error",
        });
      } catch (e) {
        this.$refs.uToast.show({
          title: "删除失败",
          type: "error",
        });
      }
    },
  },
};
</script>

<style lang="scss" scoped>
.history-page {
  height: 100vh;
  background-color: #ffffff;
  display: flex;
  flex-direction: column;
  position: relative;
  padding-top: 88rpx;

  .tab-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
  }

  .custom-tab {
    padding: 0 30rpx;
    margin: 24rpx 0;
    display: flex;
    justify-content: space-between;
    align-items: center;

    .tab-item {
      position: relative;
      padding: 12rpx 0;
      margin-right: 80rpx;
      cursor: pointer;

      .tab-text {
        font-size: 32rpx;
        font-weight: 500;
        color: #505866;
        letter-spacing: 0.04rpx;
      }

      &.active .tab-text {
        color: #4f6aff;
        font-weight: 600;
      }

      .tab-underline {
        position: absolute;
        bottom: 0;
        left: 50%;
        transform: translateX(-50%);
        right: 0;
        width: 80rpx;
        height: 4rpx;
        background-color: #4f6aff;
        border-radius: 2rpx;
      }
    }
  }

  .more-icon-container {
    width: 50rpx;
    height: 50rpx;
    margin-right: 30rpx;

    .more-icon {
      width: 50rpx;
      height: 10rpx;
      margin-right: 30rpx;
    }
  }

  /* 右上角更多菜单弹层 */
  .more-menu {
    position: absolute;
    top: 80rpx;
    right: 30rpx;
    z-index: 100;
    background-color: #ffffff;
    border: 1rpx solid rgba(79, 106, 255, 0.12);
    border-radius: 24rpx;
    box-shadow: 0 8rpx 24rpx rgba(0, 0, 0, 0.08);
    padding: 24rpx 28rpx;
  }

  .menu-card {
    display: flex;
    align-items: center;
    gap: 6rpx;

    // .menu-icon {
    //   color: #FF647D;
    //   width: 32rpx;
    //   height: 32rpx;
    //   margin-right: 12rpx;
    // }

    .menu-text {
      font-size: 28rpx;
      color: #ff647d;
      letter-spacing: 2rpx;
    }
  }

  /* 点击其它区域关闭的遮罩（透明） */
  .overlay {
    position: fixed;
    left: 0;
    top: 0;
    right: 0;
    bottom: 0;
    z-index: 99;
    background: rgba(0, 0, 0, 0);
  }

  .content-wrapper {
    padding: 30rpx;
    flex: 1;
    overflow-y: auto;
  }

  .history-list {
    .date-group {
      margin-bottom: 32rpx;
    }

    .date-header {
      font-size: 26rpx;
      color: #9aa0a8;
      margin-bottom: 16rpx;
      line-height: 1;
    }

    .history-item {
      display: flex;
      align-items: flex-start;
      padding: 24rpx 0;

      .item-checkbox {
        margin-right: 24rpx;
        padding-top: 8rpx;
        cursor: pointer;
        width: 48rpx;
        flex: 0 0 48rpx; /* 固定宽度，避免内容因显隐而抖动 */

        .checkbox {
          width: 40rpx;
          height: 40rpx;
          border: 2rpx solid #d9d9d9;
          border-radius: 50%;
          display: flex;
          align-items: center;
          justify-content: center;
          background-color: #ffffff;

          &.checked {
            background-color: #ff4757;
            border-color: #ff4757;

            .checkmark {
              color: #ffffff;
              font-size: 22rpx;
              font-weight: bold;
            }
          }
        }
      }

      .item-content {
        flex: 1;

        .item-header {
          display: flex;
          align-items: center;
          margin-bottom: 30rpx;

          .item-icon {
            width: 50rpx;
            height: 50rpx;
            background-color: rgba(79, 106, 255, 0.1);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-right: 16rpx;

            .icon-image {
              width: 26rpx;
              height: 26rpx;
            }
          }

          .item-title {
            font-size: 32rpx;
            font-weight: bold;
            color: #333333;
            flex: 1;
          }
        }

        .item-description {
          letter-spacing: 0.04rpx;
          font-size: 28rpx;
          color: #666666;
          line-height: 1.5;
          margin-bottom: 12rpx;
          overflow: hidden;
          text-overflow: ellipsis;
          display: -webkit-box;
          -webkit-line-clamp: 3;
          -webkit-box-orient: vertical;
        }
      }
    }
  }

  .batch-actions {
    height: 130rpx;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 30rpx;
    border-top: 1rpx solid #eeeeee;

    .select-all-container {
      display: flex;
      align-items: center;
      cursor: pointer;

      .checkbox {
        width: 40rpx;
        height: 40rpx;
        border: 2rpx solid #d9d9d9;
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        background-color: #ffffff;

        &.checked {
          background-color: #ff4757;
          border-color: #ff4757;

          .checkmark {
            color: #ffffff;
            font-size: 22rpx;
            font-weight: bold;
          }
        }
      }

      .select-all-text {
        margin-left: 16rpx;
        font-size: 28rpx;
        color: #333333;
      }
    }

    .function-btn {
      display: flex;
      align-items: center;
      gap: 20rpx;

      .cancel-btn {
        background-color: #e5e3e3e4;
        color: #333333;
        padding: 16rpx 32rpx;
        border-radius: 16rpx;
        font-size: 28rpx;
        cursor: pointer;
      }
      .delete-btn {
        background-color: #ff4757;
        color: #ffffff;
        padding: 16rpx 32rpx;
        border-radius: 16rpx;
        font-size: 28rpx;
        cursor: pointer;
      }
    }
  }
}
</style>
