<template>
  <view class="article-page">
    <view class="header">
      <view class="search-bar">
        <uni-icons type="search" size="18" color="#999" />
        <input
          class="search-input"
          v-model="searchTitle"
          placeholder="输入内容名称搜索"
          @input="handleSearch"
        />
      </view>
    </view>

    <view class="content">
      <view class="category-sidebar">
        <scroll-view scroll-y class="category-scroll">
          <view
            v-for="cate in categoryList"
            :key="cate._id || 'all'"
            class="category-item"
            :class="{ active: currentCateId === cate._id }"
            @click="selectCategory(cate)"
          >
            {{ cate.label }}
          </view>
        </scroll-view>
      </view>

      <view class="article-list">
        <scroll-view
          scroll-y
          class="article-scroll"
          @scrolltolower="loadMore"
          lower-threshold="50"
        >
          <view
            v-if="loading && articleList.length === 0"
            class="loading-container"
          >
            <uni-icons type="spinner-cycle" size="30" color="#999" />
            <text class="loading-text">加载中...</text>
          </view>

          <view v-else-if="articleList.length === 0" class="empty-container">
            <empty-data title="暂无文章" />
          </view>

          <view v-else>
            <view
              v-for="article in articleList"
              :key="article._id"
              class="article-item"
            >
              <view class="article-content" @click="previewArticle(article)">
                <text class="article-title">{{ article.title }}</text>
                <view class="article-footer">
                  <text class="article-date">{{ article.date }}</text>
                  <button
                    class="send-btn"
                    size="mini"
                    type="primary"
                    @click.stop="sendArticle(article)"
                  >
                    发送
                  </button>
                </view>
              </view>
            </view>

            <view v-if="loading && articleList.length > 0" class="loading-more">
              <uni-icons type="spinner-cycle" size="20" color="#999" />
              <text>加载中...</text>
            </view>

            <view
              v-if="!loading && articleList.length >= total"
              class="no-more"
            >
              没有更多了
            </view>
          </view>
        </scroll-view>
      </view>
    </view>

    <!-- 文章预览弹窗 -->
    <uni-popup ref="previewPopup" type="bottom" :safe-area="false">
      <view class="preview-container">
        <view class="preview-header">
          <text class="preview-title">{{ previewArticleData.title }}</text>
          <view class="preview-close" @click="closePreview">
            <uni-icons type="closeempty" size="24" color="#333" />
          </view>
        </view>
        <scroll-view scroll-y class="preview-content">
          <view class="rich-text-wrapper">
            <rich-text :nodes="previewArticleData.content"></rich-text>
          </view>
        </scroll-view>
        <view class="preview-footer">
          <button class="preview-close-btn" @click="closePreview">关闭</button>
        </view>
      </view>
    </uni-popup>
  </view>
</template>

<script setup>
import { ref, onMounted } from "vue";
import { onLoad } from "@dcloudio/uni-app";
import api from "@/utils/api.js";
import useAccountStore from "@/store/account.js";
import EmptyData from "@/components/empty-data.vue";

const accountStore = useAccountStore();
const env = __VITE_ENV__;
const corpId = env.MP_CORP_ID;

// 从页面参数获取群组信息
const pageParams = ref({
  groupId: "",
  corpId: "",
});

// 搜索关键词
const searchTitle = ref("");
let searchTimer = null;

// 分类列表
const categoryList = ref([{ _id: "", label: "全部" }]);
const currentCateId = ref(""); // 默认选中"全部"（_id 为空字符串）

// 文章列表
const articleList = ref([]);
const loading = ref(false);
const page = ref(1);
const pageSize = 30;
const total = ref(0);

// 预览文章数据
const previewArticleData = ref({
  title: "",
  content: "",
});
const previewPopup = ref(null);

// 获取分类列表
const getCategoryList = async () => {
  try {
    const res = await api("getArticleCateList", { corpId: corpId });
    if (res.success && res.list) {
      const cates = res.list || [];
      categoryList.value = [{ _id: "", label: "全部" }, ...cates];
    }
  } catch (error) {
    console.error("获取分类列表失败:", error);
  }
};

// 选择分类
const selectCategory = (cate) => {
  currentCateId.value = cate._id || "";
  page.value = 1;
  articleList.value = [];
  loadArticleList();
};

// 搜索处理
const handleSearch = () => {
  if (searchTimer) {
    clearTimeout(searchTimer);
  }
  searchTimer = setTimeout(() => {
    page.value = 1;
    articleList.value = [];
    loadArticleList();
  }, 500);
};

// 加载文章列表
const loadArticleList = async () => {
  if (loading.value) return;

  loading.value = true;
  try {
    const params = {
      corpId: corpId,
      page: page.value,
      pageSize: pageSize,
      enable: true,
      title: searchTitle.value,
    };

    // 如果选择了分类，添加分类ID
    if (currentCateId.value) {
      params.cateIds = [currentCateId.value];
    }

    const res = await api("getArticleList", params);
    if (res.success && res.list) {
      const { list = [], total: count = 0 } = res;
      const formattedList = list.map((item) => {
        // 格式化日期
        let date = "";
        if (item.createTime) {
          const d = new Date(item.createTime);
          const year = d.getFullYear();
          const month = String(d.getMonth() + 1).padStart(2, "0");
          const day = String(d.getDate()).padStart(2, "0");
          date = `${year}-${month}-${day}`;
        }
        return {
          ...item,
          date,
        };
      });

      if (page.value === 1) {
        articleList.value = formattedList;
      } else {
        articleList.value = [...articleList.value, ...formattedList];
      }
      total.value = count;
    } else {
      uni.showToast({
        title: res.message || "获取文章列表失败",
        icon: "none",
      });
    }
  } catch (error) {
    console.error("加载文章列表失败:", error);
    uni.showToast({
      title: "加载失败，请重试",
      icon: "none",
    });
  } finally {
    loading.value = false;
  }
};

// 加载更多
const loadMore = () => {
  if (loading.value || articleList.value.length >= total.value) return;
  page.value += 1;
  loadArticleList();
};

// 处理富文本内容，使图片自适应
const processRichTextContent = (html) => {
  if (!html) return "";

  // 给所有 img 标签添加样式
  let processedHtml = html.replace(
    /<img/gi,
    '<img style="max-width:100%;height:auto;display:block;margin:10px 0;"'
  );

  // 移除可能存在的固定宽度样式
  processedHtml = processedHtml.replace(
    /style="[^"]*width:\s*\d+px[^"]*"/gi,
    (match) => {
      return match.replace(/width:\s*\d+px;?/gi, "max-width:100%;");
    }
  );

  // 处理表格，添加自适应样式
  processedHtml = processedHtml.replace(
    /<table/gi,
    '<table style="max-width:100%;overflow-x:auto;display:block;"'
  );

  // 给整体内容添加容器样式
  processedHtml = `<div style="width:100%;overflow-x:hidden;word-wrap:break-word;word-break:break-all;">${processedHtml}</div>`;

  return processedHtml;
};

// 预览文章
const previewArticle = async (article) => {
  try {
    uni.showLoading({ title: "加载中..." });
    const res = await api("getArticle", { id: article._id, corpId: corpId });
    uni.hideLoading();

    if (res.success && res.data) {
      previewArticleData.value = {
        title: res.data.title || article.title,
        content: processRichTextContent(res.data.content || ""),
      };
      previewPopup.value?.open();
    } else {
      uni.showToast({
        title: res.message || "预览文章失败",
        icon: "none",
      });
    }
  } catch (error) {
    uni.hideLoading();
    console.error("预览文章失败:", error);
    uni.showToast({
      title: "预览失败，请重试",
      icon: "none",
    });
  }
};

// 关闭预览
const closePreview = () => {
  previewPopup.value?.close();
};

// 发送文章
const sendArticle = async (article) => {
  try {
    const { globalTimChatManager } = await import("@/utils/tim-chat.js");

    if (
      !globalTimChatManager ||
      !globalTimChatManager.tim ||
      !globalTimChatManager.isLoggedIn
    ) {
      uni.showToast({
        title: "IM系统未就绪，请重试",
        icon: "none",
      });
      return;
    }

    // 设置当前会话ID
    const conversationID = `GROUP${pageParams.value.groupId}`;
    globalTimChatManager.currentConversationID = conversationID;

    console.log("发送文章，会话ID:", conversationID);

    // 构建自定义消息数据
    const customMessageData = {
      type: "article",
      title: article.title || "宣教文章",
      articleId: article._id,
      imgUrl: article.cover || "",
      desc: "点击查看详情",
    };

    // 发送自定义消息
    const sendResult = await globalTimChatManager.sendCustomMessage(
      customMessageData
    );
    if (sendResult && sendResult.success) {
      console.log("✓ 文章消息已发送");
      uni.showToast({
        title: "发送成功",
        icon: "success",
      });

      // 延迟返回
      setTimeout(() => {
        uni.navigateBack();
      }, 1000);
    } else {
      throw new Error(sendResult?.error || "发送失败");
    }
  } catch (error) {
    console.error("发送文章失败:", error);
    uni.showToast({
      title: error.message || "发送失败",
      icon: "none",
    });
  }
};

// 页面加载时接收参数
onLoad((options) => {
  if (options.groupId) {
    pageParams.value.groupId = options.groupId;
  }
  if (options.corpId) {
    pageParams.value.corpId = options.corpId;
  }
});

onMounted(() => {
  getCategoryList();
  loadArticleList();
});
</script>

<style scoped lang="scss">
.article-page {
  display: flex;
  flex-direction: column;
  height: 100vh;
  background-color: #f5f5f5;
}

.header {
  background-color: #fff;
  padding: 20rpx;
  border-bottom: 1px solid #eee;
}

.search-bar {
  display: flex;
  align-items: center;
  background-color: #f5f5f5;
  border-radius: 8rpx;
  padding: 16rpx 24rpx;
}

.search-input {
  flex: 1;
  margin-left: 16rpx;
  font-size: 30rpx;
}

.content {
  flex: 1;
  display: flex;
  overflow: hidden;
}

.category-sidebar {
  width: 200rpx;
  background-color: #f8f8f8;
  border-right: 1px solid #eee;
}

.category-scroll {
  height: 100%;
}

.category-item {
  padding: 20rpx 24rpx;
  font-size: 30rpx;
  color: #333;
  text-align: center;
  border-bottom: 1px solid #eee;
  transition: all 0.3s ease;
  position: relative;
}

.category-item.active {
  background-color: #fff;
  color: #0877f1;
  font-weight: bold;
  border-left: 4rpx solid #0877f1;
}

.article-list {
  flex: 1;
  background-color: #fff;
}

.article-scroll {
  height: 100%;
}

.loading-container,
.empty-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 100rpx 0;
}

.loading-text {
  margin-top: 20rpx;
  font-size: 30rpx;
  color: #999;
}

.article-item {
  padding: 24rpx 30rpx;
  border-bottom: 1px solid #eee;
  transition: background-color 0.2s ease;
}

.article-item:active {
  background-color: #f5f5f5;
}

.article-content {
  display: flex;
  flex-direction: column;
  gap: 16rpx;
}

.article-title {
  font-size: 30rpx;
  color: #333;
  line-height: 1.6;
  word-break: break-all;
  font-weight: 500;
}

.article-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20rpx;
}

.article-date {
  flex: 1;
  font-size: 26rpx;
  color: #999;
}

.send-btn {
  flex-shrink: 0;
  font-size: 28rpx;
  padding: 8rpx 32rpx;
  height: auto;
  line-height: 1.4;
}

.loading-more,
.no-more {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 30rpx 0;
  font-size: 26rpx;
  color: #999;
  gap: 10rpx;
}

/* 预览弹窗样式 */
.preview-container {
  background-color: #fff;
  border-radius: 20rpx 20rpx 0 0;
  height: 80vh;
  display: flex;
  flex-direction: column;
}

.preview-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 30rpx;
  border-bottom: 1px solid #eee;
}

.preview-title {
  flex: 1;
  font-size: 34rpx;
  font-weight: bold;
  color: #333;
}

.preview-close {
  padding: 10rpx;
}

.preview-content {
  flex: 1;
  padding: 0;
  overflow-y: auto;
}

.rich-text-wrapper {
  padding: 30rpx;
  width: 100%;
  box-sizing: border-box;
  overflow: hidden;
}

/* rich-text 内部样式 */
.rich-text-wrapper ::v-deep rich-text {
  width: 100%;
}

.rich-text-wrapper ::v-deep rich-text img {
  max-width: 100% !important;
  height: auto !important;
  display: block;
}

.preview-footer {
  padding: 20rpx;
  border-top: 1px solid #eee;
}

.preview-close-btn {
  width: 100%;
  background-color: #1890ff;
  color: #fff;
}
</style>
