<template>
  <div class="platform-analytics">
    <!-- 顶部筛选栏 -->
    <div class="filter-bar">
      <div class="filter-left">
        <span class="filter-label">开始时间</span>
        <el-date-picker
          v-model="startDate"
          type="date"
          placeholder="选择日期"
          format="YYYY-MM-DD"
          value-format="YYYY-MM-DD"
          style="width: 140px"
        />
        <span class="filter-label">结束时间</span>
        <el-date-picker
          v-model="endDate"
          type="date"
          placeholder="选择日期"
          format="YYYY-MM-DD"
          value-format="YYYY-MM-DD"
          style="width: 140px"
        />
        <div class="quick-btns">
          <el-button 
            v-for="btn in quickDateBtns" 
            :key="btn.value"
            :type="activeQuickBtn === btn.value ? 'primary' : 'default'"
            size="small"
            @click="handleQuickDate(btn.value)"
          >
            {{ btn.label }}
          </el-button>
        </div>
        <el-button type="primary" @click="handleQuery">查询</el-button>
      </div>
      <div class="filter-right">
        <el-button @click="handleExport">导出数据</el-button>
      </div>
    </div>
    
    <!-- 数据表格 -->
    <div class="data-table">
      <el-table :data="platformData" v-loading="loading" stripe>
        <el-table-column label="平台" min-width="150">
          <template #default="{ row }">
            <div class="platform-cell">
              <img :src="getPlatformIcon(row.platform)" class="platform-icon" :alt="row.platform" />
              <span class="platform-name">{{ getPlatformName(row.platform) }}</span>
            </div>
          </template>
        </el-table-column>
        <el-table-column prop="viewsCount" label="阅读（播放）量" width="140" align="center">
          <template #default="{ row }">
            <span>{{ row.viewsCount ?? '未支持' }}</span>
          </template>
        </el-table-column>
        <el-table-column prop="commentsCount" label="评论量" width="100" align="center">
          <template #default="{ row }">
            <span>{{ row.commentsCount ?? 0 }}</span>
          </template>
        </el-table-column>
        <el-table-column prop="likesCount" label="点赞量" width="100" align="center">
          <template #default="{ row }">
            <span>{{ row.likesCount ?? 0 }}</span>
          </template>
        </el-table-column>
        <el-table-column prop="fansIncrease" label="涨粉量" width="100" align="center">
          <template #default="{ row }">
            <span :class="{ 'increase': row.fansIncrease > 0, 'decrease': row.fansIncrease < 0 }">
              {{ row.fansIncrease ?? 0 }}
            </span>
          </template>
        </el-table-column>
        <el-table-column prop="updateTime" label="更新时间" width="140" align="center">
          <template #default="{ row }">
            <span class="update-time">{{ formatTime(row.updateTime) }}</span>
          </template>
        </el-table-column>
        <el-table-column label="操作" width="100" align="center" fixed="right">
          <template #default="{ row }">
            <el-button 
              type="primary" 
              link 
              @click.stop.prevent="handleDetail(row)"
            >
              详情
            </el-button>
          </template>
        </el-table-column>
      </el-table>
    </div>
    
    <!-- 平台详情抽屉 -->
    <el-drawer v-model="drawerVisible" :title="drawerTitle" size="60%">
      <div v-if="selectedPlatform" class="platform-detail">
        <!-- 统计概览 -->
        <div class="detail-stats">
          <div class="stat-item">
            <div class="stat-value">{{ formatNumber(selectedPlatform.fansCount || 0) }}</div>
            <div class="stat-label">总粉丝</div>
          </div>
          <div class="stat-item">
            <div class="stat-value">{{ formatNumber(selectedPlatform.viewsCount || 0) }}</div>
            <div class="stat-label">总播放</div>
          </div>
          <div class="stat-item">
            <div class="stat-value">{{ formatNumber(selectedPlatform.likesCount || 0) }}</div>
            <div class="stat-label">总点赞</div>
          </div>
          <div class="stat-item">
            <div class="stat-value">{{ formatNumber(selectedPlatform.commentsCount || 0) }}</div>
            <div class="stat-label">总评论</div>
          </div>
        </div>
        
        <!-- 趋势图 -->
        <div class="detail-chart">
          <h4>数据趋势</h4>
          <div ref="detailChartRef" style="height: 300px" v-loading="chartLoading"></div>
        </div>
        
        <!-- 该平台账号列表 -->
        <div class="detail-accounts">
          <h4>平台账号</h4>
          <el-table :data="platformAccounts" size="small">
            <el-table-column label="账号" min-width="150">
              <template #default="{ row }">
                <div class="account-cell">
                  <el-avatar :size="28" :src="row.avatarUrl">{{ row.nickname?.[0] }}</el-avatar>
                  <span>{{ row.nickname || row.username }}</span>
                </div>
              </template>
            </el-table-column>
            <el-table-column prop="fansCount" label="粉丝" width="100" align="center">
              <template #default="{ row }">{{ formatNumber(row.fansCount || 0) }}</template>
            </el-table-column>
            <el-table-column prop="viewsCount" label="播放" width="100" align="center">
              <template #default="{ row }">{{ formatNumber(row.viewsCount || 0) }}</template>
            </el-table-column>
            <el-table-column prop="likesCount" label="点赞" width="100" align="center">
              <template #default="{ row }">{{ formatNumber(row.likesCount || 0) }}</template>
            </el-table-column>
          </el-table>
        </div>
      </div>
    </el-drawer>
  </div>
</template>

<script setup lang="ts">
import { ref, computed, onMounted, watch, nextTick } from 'vue';
import { useRouter } from 'vue-router';
import * as echarts from 'echarts';
import { PLATFORMS } from '@media-manager/shared';
import type { PlatformType } from '@media-manager/shared';
import { useAuthStore } from '@/stores/auth';
import { useServerStore } from '@/stores/server';
import { ElMessage } from 'element-plus';
import dayjs from 'dayjs';
import request from '@/api/request';
import iconDefaultUrl from '@/assets/platforms/default.svg?url';
import douyinIconUrl from '@/assets/platforms/douyin.svg?url';
import xhsIconUrl from '@/assets/platforms/xiaohongshu.svg?url';
import bilibiliIconUrl from '@/assets/platforms/bilibili.svg?url';
import kuaishouIconUrl from '@/assets/platforms/kuaishou.svg?url';
import weixinVideoIconUrl from '@/assets/platforms/weixin_video.svg?url';
import baijiahaoIconUrl from '@/assets/platforms/baijiahao.svg?url';

const router = useRouter();
const authStore = useAuthStore();
const serverStore = useServerStore();
const loading = ref(false);
const chartLoading = ref(false);

// 日期筛选
const startDate = ref(dayjs().format('YYYY-MM-DD'));
const endDate = ref(dayjs().format('YYYY-MM-DD'));
const activeQuickBtn = ref('yesterday');

// 快捷日期按钮（今天/昨天/前天/近三天/近七天/近一个月）
const quickDateBtns = [
  { label: '今天', value: 'today' },
  { label: '昨天', value: 'yesterday' },
  { label: '前天', value: 'beforeYesterday' },
  { label: '近三天', value: 'last3days' },
  { label: '近七天', value: 'last7days' },
  { label: '近一个月', value: 'lastMonth' },
];

// 平台图标映射（使用本地 SVG，避免 Electron/CSP 阻止外链图标）
const iconDefault = iconDefaultUrl;
const platformIcons: Record<string, string> = {
  douyin: douyinIconUrl,
  xiaohongshu: xhsIconUrl,
  bilibili: bilibiliIconUrl,
  kuaishou: kuaishouIconUrl,
  weixin: weixinVideoIconUrl,
  weixin_video: weixinVideoIconUrl,
  baijiahao: baijiahaoIconUrl,
};

// 平台数据
interface PlatformData {
  platform: PlatformType;
  viewsCount: number | null;
  commentsCount: number;
  likesCount: number;
  fansIncrease: number;
  fansCount: number;
  updateTime: string;
}

const platformData = ref<PlatformData[]>([]);

// 抽屉相关
const drawerVisible = ref(false);
const selectedPlatform = ref<PlatformData | null>(null);
const platformAccounts = ref<any[]>([]);
const detailChartRef = ref<HTMLElement>();
let detailChart: echarts.ECharts | null = null;

const drawerTitle = computed(() => {
  if (!selectedPlatform.value) return '平台详情';
  return `${getPlatformName(selectedPlatform.value.platform)} - 数据详情`;
});

function getPlatformName(platform: PlatformType) {
  return PLATFORMS[platform]?.name || platform;
}

function getPlatformIcon(platform: PlatformType) {
  return platformIcons[platform] || iconDefault;
}

function formatNumber(num: number) {
  if (num >= 10000) return (num / 10000).toFixed(1) + 'w';
  return num.toString();
}

function formatTime(time: string) {
  if (!time) return '-';
  return dayjs(time).format('MM-DD HH:mm');
}

// 快捷日期选择
function handleQuickDate(type: string) {
  activeQuickBtn.value = type;
  const today = dayjs();
  
  switch (type) {
    case 'today':
      startDate.value = today.format('YYYY-MM-DD');
      endDate.value = today.format('YYYY-MM-DD');
      break;
    case 'yesterday':
      startDate.value = today.subtract(1, 'day').format('YYYY-MM-DD');
      endDate.value = today.subtract(1, 'day').format('YYYY-MM-DD');
      break;
    case 'beforeYesterday':
      startDate.value = today.subtract(2, 'day').format('YYYY-MM-DD');
      endDate.value = today.subtract(2, 'day').format('YYYY-MM-DD');
      break;
    case 'last3days':
      // 今日 - 区间最早（含今天，共 3 天：今天/昨天/前天）
      startDate.value = today.subtract(2, 'day').format('YYYY-MM-DD');
      endDate.value = today.format('YYYY-MM-DD');
      break;
    case 'last7days':
      // 含今天，共 7 天
      startDate.value = today.subtract(6, 'day').format('YYYY-MM-DD');
      endDate.value = today.format('YYYY-MM-DD');
      break;
    case 'lastMonth':
      // 含今天，共 30 天
      startDate.value = today.subtract(29, 'day').format('YYYY-MM-DD');
      endDate.value = today.format('YYYY-MM-DD');
      break;
  }
}

// 查询
function handleQuery() {
  loadData();
}

// 加载数据（通过 Node 转发调用 Python 接口）
async function loadData() {
  loading.value = true;
  
  try {
    const data = await request.get('/api/analytics/platforms-from-python', {
      params: {
        startDate: startDate.value,
        endDate: endDate.value,
      },
    });

    if (data) {
      platformData.value = data;
    }
  } catch (error) {
    console.error('加载平台数据失败:', error);
  } finally {
    loading.value = false;
  }
}

// 查看详情
function handleDetail(row: PlatformData) {
  console.log('[Platform] handleDetail called, row:', row);
  console.log('[Platform] platform:', row.platform);
  console.log('[Platform] startDate:', startDate.value, 'endDate:', endDate.value);
  
  try {
    // 跳转到平台详情页面
    router.push({
      name: 'AnalyticsPlatformDetail',
      params: {
        platform: row.platform,
      },
      query: {
        startDate: startDate.value,
        endDate: endDate.value,
      },
    }).then(() => {
      console.log('[Platform] 路由跳转成功');
    }).catch((error) => {
      console.error('[Platform] 路由跳转失败:', error);
      ElMessage.error('跳转失败: ' + (error?.message || '未知错误'));
    });
  } catch (error: any) {
    console.error('[Platform] handleDetail 错误:', error);
    ElMessage.error('跳转失败: ' + (error?.message || '未知错误'));
  }
}

// 加载平台详情
async function loadPlatformDetail(platform: PlatformType) {
  const userId = authStore.user?.id;
  if (!userId) return;
  
  chartLoading.value = true;
  
  try {
    const queryParams = new URLSearchParams({
      user_id: userId.toString(),
      platform: platform,
      start_date: startDate.value,
      end_date: endDate.value,
    });
    
    const response = await fetch(`${PYTHON_API_URL}/work_day_statistics/platform_detail?${queryParams}`);
    const result = await response.json();
    
    if (result.success && result.data) {
      platformAccounts.value = result.data.accounts || [];
      
      // 更新图表
      if (result.data.trend) {
        updateDetailChart(result.data.trend);
      }
    }
  } catch (error) {
    console.error('加载平台详情失败:', error);
  } finally {
    chartLoading.value = false;
  }
}

// 更新详情图表
function updateDetailChart(trendData: { dates: string[]; fans: number[]; views: number[]; likes: number[] }) {
  if (!detailChartRef.value) return;
  
  if (!detailChart) {
    detailChart = echarts.init(detailChartRef.value);
  }
  
  detailChart.setOption({
    tooltip: { trigger: 'axis' },
    legend: { data: ['粉丝', '播放', '点赞'], bottom: 0 },
    grid: { left: '3%', right: '4%', bottom: '15%', top: '10%', containLabel: true },
    xAxis: {
      type: 'category',
      data: trendData.dates,
      axisLabel: { color: '#6b7280' },
    },
    yAxis: {
      type: 'value',
      axisLabel: {
        color: '#6b7280',
        formatter: (value: number) => value >= 10000 ? (value / 10000).toFixed(1) + '万' : value.toString(),
      },
    },
    series: [
      { name: '粉丝', type: 'line', data: trendData.fans, smooth: true },
      { name: '播放', type: 'line', data: trendData.views, smooth: true },
      { name: '点赞', type: 'line', data: trendData.likes, smooth: true },
    ],
  });
}

// 导出数据
async function handleExport() {
  try {
    const baseUrl = serverStore.currentServer?.url;
    if (!baseUrl) {
      ElMessage.error('未连接服务器');
      return;
    }

    if (!authStore.accessToken) {
      ElMessage.error('未连接服务器或未登录');
      return;
    }

    const buildUrl = () => {
      const params = new URLSearchParams();
      if (startDate.value) params.set('startDate', startDate.value);
      if (endDate.value) params.set('endDate', endDate.value);
      return `${baseUrl}/api/work-day-statistics/platforms/export?${params.toString()}`;
    };

    const doFetch = async (token: string) => {
      const url = buildUrl();
      return await fetch(url, {
        method: 'GET',
        headers: {
          Authorization: `Bearer ${token}`,
        },
      });
    };

    let resp = await doFetch(authStore.accessToken!);

    if (resp.status === 401) {
      const refreshed = await authStore.refreshAccessToken();
      if (!refreshed || !authStore.accessToken) {
        ElMessage.error('登录已过期，请重新登录');
        return;
      }
      resp = await doFetch(authStore.accessToken);
    }

    if (!resp.ok) {
      const text = await resp.text().catch(() => '');
      throw new Error(text || `导出失败，状态码：${resp.status}`);
    }

    const blob = await resp.blob();
    const downloadUrl = window.URL.createObjectURL(blob);
    const a = document.createElement('a');
    a.href = downloadUrl;
    a.download = `平台数据_${dayjs().format('YYYYMMDD_HHmmss')}.xlsx`;
    document.body.appendChild(a);
    a.click();
    a.remove();
    window.URL.revokeObjectURL(downloadUrl);
  } catch (error: any) {
    console.error('导出失败:', error);
    ElMessage.error(error?.message || '导出失败');
  }
}

// 监听抽屉关闭
watch(drawerVisible, (visible) => {
  if (!visible && detailChart) {
    detailChart.dispose();
    detailChart = null;
  }
});

onMounted(() => {
  // 默认选择昨天
  handleQuickDate('yesterday');
  loadData();
});
</script>

<style lang="scss" scoped>
@use '@/styles/variables.scss' as *;

.platform-analytics {
  .filter-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
    padding: 16px 20px;
    background: #fff;
    border-radius: $radius-lg;
    box-shadow: $shadow-sm;
    
    .filter-left {
      display: flex;
      align-items: center;
      gap: 12px;
      
      .filter-label {
        font-size: 14px;
        color: $text-regular;
      }
      
      .quick-btns {
        display: flex;
        gap: 8px;
        margin-left: 8px;
      }
    }
  }
  
  .data-table {
    background: #fff;
    border-radius: $radius-lg;
    box-shadow: $shadow-sm;
    overflow: hidden;
    
    .platform-cell {
      display: flex;
      align-items: center;
      gap: 10px;
      
      .platform-icon {
        width: 24px;
        height: 24px;
        border-radius: 4px;
      }
      
      .platform-name {
        font-weight: 500;
        color: $text-primary;
      }
    }
    
    .increase {
      color: #10b981;
    }
    
    .decrease {
      color: #ef4444;
    }
    
    .update-time {
      font-size: 12px;
      color: $text-secondary;
    }
  }
}

.platform-detail {
  .detail-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-bottom: 24px;
    
    .stat-item {
      background: #f8fafc;
      border-radius: 12px;
      padding: 16px;
      text-align: center;
      
      .stat-value {
        font-size: 24px;
        font-weight: 600;
        color: $primary-color;
      }
      
      .stat-label {
        font-size: 13px;
        color: $text-secondary;
        margin-top: 4px;
      }
    }
  }
  
  .detail-chart {
    margin-bottom: 24px;
    
    h4 {
      margin: 0 0 16px 0;
      font-size: 15px;
      color: $text-primary;
    }
  }
  
  .detail-accounts {
    h4 {
      margin: 0 0 16px 0;
      font-size: 15px;
      color: $text-primary;
    }
    
    .account-cell {
      display: flex;
      align-items: center;
      gap: 8px;
    }
  }
}

@media (max-width: 1200px) {
  .platform-analytics {
    .filter-bar {
      flex-direction: column;
      align-items: flex-start;
      gap: 12px;
      
      .filter-left {
        flex-wrap: wrap;
        
        .quick-btns {
          width: 100%;
          margin-left: 0;
          margin-top: 8px;
        }
      }
    }
  }
}
</style>
