<!-- eslint-disable vue/no-v-html -->
<template>
  <div class="page-container-flex">
    <van-pull-refresh v-model="refreshing" @refresh="onRefresh">
      <van-list
        v-model:loading="loading"
        :finished="finished"
        finished-text="没有更多了"
        @load="onLoad"
      >
        <van-cell-group v-if="list.length" inset style="margin-top: 10px">
          <van-swipe-cell v-for="item in list" :key="item.id">
            <div class="message-card" @click="viewDetail(item)">
              <div class="card-left">
                <div class="message-title" :class="{ 'unread': !item.isRead }">
                  {{ item.title }}
                </div>
                <div class="message-content">
                  {{ item.content }}
                </div>
                <div class="message-info">
                  {{ item.createTime }}
                </div>
              </div>
              <div class="card-right">
                <van-tag v-if="!item.isRead" type="danger">未读</van-tag>
                <van-icon name="arrow" size="16" class="arrow-icon" />
              </div>
            </div>
            <template #right>
              <van-button square text="删除" type="danger" class="delete-button" @click="handleDelete(item)" />
            </template>
          </van-swipe-cell>
        </van-cell-group>
        <van-empty v-else-if="!loading" description="暂无消息" />
      </van-list>
    </van-pull-refresh>

    <!-- 详情弹出层 -->
    <PopupContainer
      v-model="detailVisible"
      :title="currentMessage.title"
      :subtitle="currentMessage.createTime"
      height="50%"
      :closeable="true"
    >
      <div
        v-if="currentMessage.messageType === 2" 
        class="detail-content" 
        v-html="currentMessage.content"
      >
      </div>
      <div v-else class="detail-content">
        {{ currentMessage.content }}
      </div>
    </PopupContainer>
  </div>
</template>

<script setup>
import { ref, onMounted } from 'vue';
import { showToast, showDialog } from 'vant';
import { getMessageList, markAsRead, deleteMessage, markAllAsRead } from '@/api/message';
import { useMessageStore } from '@/stores/message';
import PopupContainer from '@/components/PopupContainer.vue';

const messageStore = useMessageStore();
const list = ref([]);
const loading = ref(false);
const finished = ref(false);
const refreshing = ref(false);
const pageIndex = ref(1);
const pageSize = ref(20);

const detailVisible = ref(false);
const currentMessage = ref({});

const onLoad = async () => {
  if (refreshing.value) {
    list.value = [];
    pageIndex.value = 1;
    refreshing.value = false;
  }

  try {
    const res = await getMessageList({
      pageIndex: pageIndex.value,
      pageSize: pageSize.value
    });
    
    if (res.success) {
      // 格式化时间
      const data = res.data.map(item => ({
        ...item,
        createTime: new Date(item.createTime).toLocaleString()
      }));
      
      if (pageIndex.value === 1) {
        list.value = data;
      } else {
        list.value = [...list.value, ...data];
      }
      
      // 判断是否加载完成
      if (list.value.length >= res.total || data.length < pageSize.value) {
        finished.value = true;
      } else {
        pageIndex.value++;
      }
    } else {
      showToast(res.message || '加载失败');
      finished.value = true;
    }
  } catch (error) {
    console.error(error);
    showToast('加载失败');
    finished.value = true;
  } finally {
    loading.value = false;
  }
};

const onRefresh = () => {
  finished.value = false;
  loading.value = true;
  onLoad();
};

const viewDetail = async (item) => {
  if (!item.isRead) {
    try {
      await markAsRead(item.id);
      item.isRead = true;
      messageStore.updateUnreadCount();
    } catch (error) {
      console.error('标记已读失败', error);
    }
  }

  if (item.messageType === 1) {
    if (item.content.startsWith('http')) {
      window.open(item.content, '_blank');
    } else {
      showToast('无效的URL');
    }
    return;
  }
  
  currentMessage.value = item;
  detailVisible.value = true;
};

const handleDelete = (item) => {
  showDialog({
    title: '提示',
    message: '确定要删除这条消息吗？',
    showCancelButton: true,
  }).then(async (action) => {
    if (action === 'confirm') {
      try {
        const res = await deleteMessage(item.id);
        if (res.success) {
          showToast('删除成功');
          const wasUnread = !item.isRead;
          list.value = list.value.filter(i => i.id !== item.id);
          if (wasUnread) {
            messageStore.updateUnreadCount();
          }
        } else {
          showToast(res.message || '删除失败');
        }
      } catch (error) {
        console.error('删除消息失败', error);
        showToast('删除失败');
      }
    }
  });
};

const handleMarkAllRead = () => {
  showDialog({
    title: '提示',
    message: '确定要将所有消息标记为已读吗？',
    showCancelButton: true,
  }).then(async (action) => {
    if (action === 'confirm') {
      try {
        const res = await markAllAsRead();
        if (res.success) {
          showToast('操作成功');
          // 刷新列表
          onRefresh();
          // 更新未读计数
          messageStore.updateUnreadCount();
        } else {
          showToast(res.message || '操作失败');
        }
      } catch (error) {
        console.error('标记所有已读失败', error);
        showToast('操作失败');
      }
    }
  });
};

onMounted(() => {
  // onLoad 会由 van-list 自动触发
});

defineExpose({
  handleMarkAllRead
});
</script>

<style scoped>
.message-card {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 16px;
  cursor: pointer;
}

.card-left {
  flex: 1;
  min-width: 0;
  padding-right: 12px;
}

.card-right {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.arrow-icon {
  color: var(--van-gray-5);
}

.message-title {
  font-size: 15px;
  margin-bottom: 6px;
  color: var(--van-text-color);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.message-content{
  font-size: 14px;
  color: var(--van-text-color-2);
  margin-bottom: 6px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.message-title.unread {
  font-weight: bold;
}

.message-info {
  font-size: 12px;
  color: var(--van-text-color-2);
}

.delete-button {
  height: 100%;
}

.detail-time {
  color: var(--van-text-color-2);
  font-size: 14px;
}

.detail-content {
  padding: 20px;
  font-size: 16px;
  line-height: 1.6;
  color: var(--van-text-color);
  white-space: pre-wrap;
}

:deep(.van-pull-refresh) {
  flex: 1;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
}

/* 设置页面容器背景色 */
:deep(.van-nav-bar) {
  background: transparent !important;
}
</style>