<template>
  <div class="dashboard">
    <!-- 左侧导航栏 -->
    <aside class="sidebar">
      <div class="logo">
        <div class="logo-icon"></div>
        <span>LOGO</span>
      </div>
      <nav class="nav-menu">
        <div class="nav-item active">
          <el-icon><Grid /></el-icon>
          <span>数据仪表台</span>
        </div>
        <div class="nav-item" @click="goToUsers">
          <el-icon><UserIcon /></el-icon>
          <span>会员管理</span>
        </div>
        <div class="nav-item" @click="goToOrders">
          <el-icon><ShoppingCart /></el-icon>
          <span>订单管理</span>
        </div>
        <div class="nav-item" @click="goToAPI">
          <el-icon><Document /></el-icon>
          <span>API管理</span>
        </div>
        <div class="nav-item" @click="goToTasks">
          <el-icon><Document /></el-icon>
          <span>生成任务记录</span>
        </div>
        <div class="nav-item" @click="goToSettings">
          <el-icon><Setting /></el-icon>
          <span>系统设置</span>
        </div>
      </nav>
      <div class="sidebar-footer">
        <div class="online-users">
          当前在线用户: <span class="highlight">{{ systemStatus.onlineUsers }}/500</span>
        </div>
        <div class="system-uptime">
          系统运行时间: <span class="highlight">{{ systemStatus.systemUptime }}</span>
        </div>
      </div>
    </aside>

    <!-- 主内容区域 -->
    <main class="main-content">
      <!-- 顶部搜索栏 -->
      <header class="top-header">
        <div class="search-bar">
          <el-icon class="search-icon"><Search /></el-icon>
          <input type="text" placeholder="搜索你的想要的内容" class="search-input" />
        </div>
        <div class="header-actions">
          <el-icon class="notification-icon"><Bell /></el-icon>
          <div class="user-avatar">
            <img src="/images/backgrounds/welcome.jpg" alt="用户头像" />
            <el-icon class="dropdown-icon"><ArrowDown /></el-icon>
          </div>
        </div>
      </header>

      <!-- KPI 卡片区域 -->
      <section class="kpi-section">
        <div class="kpi-card">
          <div class="kpi-icon user-icon">
            <el-icon><UserIcon /></el-icon>
          </div>
          <div class="kpi-content">
            <div class="kpi-title">用户总数</div>
            <div class="kpi-value">{{ formatNumber(dashboardData.totalUsers) }}</div>
            <div class="kpi-trend positive">+12% 较上月同期</div>
          </div>
        </div>
        
        <div class="kpi-card">
          <div class="kpi-icon paid-user-icon">
            <el-icon><UserIcon /></el-icon>
            <div class="currency-symbol">¥</div>
          </div>
          <div class="kpi-content">
            <div class="kpi-title">付费用户数</div>
            <div class="kpi-value">{{ formatNumber(dashboardData.paidUsers) }}</div>
            <div class="kpi-trend negative">-5% 较上月同期</div>
          </div>
        </div>
        
        <div class="kpi-card">
          <div class="kpi-icon revenue-icon">
            <el-icon><Money /></el-icon>
          </div>
          <div class="kpi-content">
            <div class="kpi-title">今日收入</div>
            <div class="kpi-value">{{ formatCurrency(dashboardData.todayRevenue) }}</div>
            <div class="kpi-trend positive">+15% 较上月同期</div>
          </div>
        </div>
      </section>

      <!-- 图表区域 -->
      <section class="charts-section">
        <!-- 日活用户趋势图 -->
        <DailyActiveUsersChart />

        <!-- 用户转化率图 -->
        <div class="chart-card full-width">
          <div class="chart-header">
            <h3>用户转化率</h3>
            <div class="year-selector">
              <span>2025年</span>
              <el-icon><ArrowDown /></el-icon>
            </div>
          </div>
          <div class="chart-container">
            <div class="bar-chart">
              <div class="bar" style="height: 15%;"></div>
              <div class="bar" style="height: 25%;"></div>
              <div class="bar" style="height: 20%;"></div>
              <div class="bar" style="height: 30%;"></div>
              <div class="bar" style="height: 18%;"></div>
              <div class="bar" style="height: 22%;"></div>
              <div class="bar" style="height: 28%;"></div>
              <div class="bar" style="height: 35%;"></div>
              <div class="bar active" style="height: 40%;"></div>
              <div class="bar" style="height: 25%;"></div>
              <div class="bar" style="height: 20%;"></div>
              <div class="bar" style="height: 18%;"></div>
            </div>
            <div class="chart-x-axis">
              <span>1月</span>
              <span>2月</span>
              <span>3月</span>
              <span>4月</span>
              <span>5月</span>
              <span>6月</span>
              <span>7月</span>
              <span>8月</span>
              <span>9月</span>
              <span>10月</span>
              <span>11月</span>
              <span>12月</span>
            </div>
            <div class="chart-y-axis">
              <span>20%</span>
              <span>15%</span>
              <span>10%</span>
              <span>5%</span>
              <span>0%</span>
            </div>
          </div>
        </div>
      </section>
    </main>
    
  </div>
</template>

<script setup>
import { ref, onMounted, computed } from 'vue'
import { useRouter } from 'vue-router'
import { useUserStore } from '@/stores/user'
import { ElMessage } from 'element-plus'
import {
  Grid,
  User as UserIcon,
  ShoppingCart,
  Document,
  Setting,
  Search,
  Bell,
  ArrowDown,
  Money
} from '@element-plus/icons-vue'
import * as dashboardAPI from '@/api/dashboard'
import DailyActiveUsersChart from '@/components/DailyActiveUsersChart.vue'

const router = useRouter()
const userStore = useUserStore()


// 数据状态
const loading = ref(false)
const selectedYear = ref('2024')
const dashboardData = ref({
  totalUsers: 0,
  paidUsers: 0,
  todayRevenue: 0,
  totalOrders: 0,
  totalRevenue: 0,
  monthRevenue: 0
})

const monthlyData = ref([])
const conversionData = ref({
  totalUsers: 0,
  paidUsers: 0,
  conversionRate: 0,
  membershipStats: []
})

const systemStatus = ref({
  onlineUsers: 0,
  systemUptime: '0小时0分',
  databaseStatus: '正常',
  serviceStatus: '运行中'
})

// 清理未使用的图表相关代码


// 导航功能
const goToUsers = () => {
  router.push('/member-management')
}

const goToOrders = () => {
  if (userStore.isAuthenticated) {
    router.push('/orders')
  } else {
    ElMessage.warning('请先登录')
    router.push('/login')
  }
}

const goToAPI = () => {
  router.push('/api-management')
}

const goToTasks = () => {
  router.push('/generate-task-record')
}

const goToSettings = () => {
  router.push('/system-settings')
}

// 加载仪表盘数据
const loadDashboardData = async () => {
  try {
    loading.value = true
    
    // 并行加载所有数据
    const [overviewRes, monthlyRes, conversionRes, statusRes] = await Promise.all([
      dashboardAPI.getDashboardOverview(),
      dashboardAPI.getMonthlyRevenue(selectedYear.value),
      dashboardAPI.getConversionRate(),
      dashboardAPI.getSystemStatus()
    ])
    
    // 处理概览数据
    if (overviewRes) {
      dashboardData.value = {
        totalUsers: overviewRes.totalUsers || 0,
        paidUsers: overviewRes.paidUsers || 0,
        todayRevenue: overviewRes.todayRevenue || 0,
        totalOrders: overviewRes.totalOrders || 0,
        totalRevenue: overviewRes.totalRevenue || 0,
        monthRevenue: overviewRes.monthRevenue || 0
      }
    }
    
    // 处理月度数据
    if (monthlyRes && monthlyRes.monthlyData) {
      monthlyData.value = monthlyRes.monthlyData
    }
    
    // 处理转化率数据
    if (conversionRes) {
      conversionData.value = {
        totalUsers: conversionRes.totalUsers || 0,
        paidUsers: conversionRes.paidUsers || 0,
        conversionRate: conversionRes.conversionRate || 0,
        membershipStats: conversionRes.membershipStats || []
      }
    }
    
    // 处理系统状态
    if (statusRes) {
      systemStatus.value = {
        onlineUsers: statusRes.onlineUsers || 0,
        systemUptime: statusRes.systemUptime || '0小时0分',
        databaseStatus: statusRes.databaseStatus || '正常',
        serviceStatus: statusRes.serviceStatus || '运行中'
      }
    }
    
  } catch (error) {
    console.error('加载仪表盘数据失败:', error)
    ElMessage.error('加载仪表盘数据失败')
    
    // 使用默认数据作为后备
    dashboardData.value = {
      totalUsers: 10,
      paidUsers: 8,
      todayRevenue: 0,
      totalOrders: 180,
      totalRevenue: 0,
      monthRevenue: 0
    }
    
    monthlyData.value = [
      { month: 1, revenue: 0, orderCount: 0 },
      { month: 2, revenue: 0, orderCount: 0 },
      { month: 3, revenue: 0, orderCount: 0 },
      { month: 4, revenue: 0, orderCount: 0 },
      { month: 5, revenue: 0, orderCount: 0 },
      { month: 6, revenue: 0, orderCount: 0 },
      { month: 7, revenue: 0, orderCount: 0 },
      { month: 8, revenue: 0, orderCount: 0 },
      { month: 9, revenue: 0, orderCount: 0 },
      { month: 10, revenue: 0, orderCount: 0 },
      { month: 11, revenue: 0, orderCount: 0 },
      { month: 12, revenue: 0, orderCount: 0 }
    ]
    
    conversionData.value = {
      totalUsers: 10,
      paidUsers: 8,
      conversionRate: 80,
      membershipStats: []
    }
    
    systemStatus.value = {
      onlineUsers: 50,
      systemUptime: '48小时32分',
      databaseStatus: '正常',
      serviceStatus: '运行中'
    }
  } finally {
    loading.value = false
  }
}

// 格式化数字
const formatNumber = (num) => {
  if (num >= 10000) {
    return (num / 10000).toFixed(1) + '万'
  }
  return num.toLocaleString()
}

// 格式化金额
const formatCurrency = (amount) => {
  return '¥' + amount.toLocaleString()
}

onMounted(() => {
  loadDashboardData()
})
</script>

<style scoped>
.dashboard {
  display: flex;
  min-height: 100vh;
  background: #f8fafc;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

/* 左侧导航栏 */
.sidebar {
  width: 320px;
  background: white;
  border-right: 1px solid #e2e8f0;
  display: flex;
  flex-direction: column;
  padding: 24px 0;
}

.logo {
  display: flex;
  align-items: center;
  padding: 0 28px;
  margin-bottom: 32px;
}

.logo-icon {
  width: 24px;
  height: 24px;
  background: #3b82f6;
  border-radius: 4px;
  margin-right: 12px;
}

.logo span {
  font-size: 18px;
  font-weight: 600;
  color: #1e293b;
}

.nav-menu {
  flex: 1;
  padding: 0 24px;
}

.nav-item {
  display: flex;
  align-items: center;
  padding: 18px 24px;
  margin-bottom: 6px;
  border-radius: 10px;
  cursor: pointer;
  transition: all 0.2s ease;
  color: #64748b;
  font-size: 16px;
}

.nav-item:hover {
  background: #f1f5f9;
  color: #334155;
}

.nav-item.active {
  background: #eff6ff;
  color: #3b82f6;
}

.nav-item .el-icon {
  margin-right: 16px;
  font-size: 22px;
}

.nav-item span {
  font-size: 16px;
  font-weight: 500;
}

.sidebar-footer {
  padding: 0 32px 20px;
  margin-top: auto;
}

.online-users,
.system-uptime {
  font-size: 14px;
  color: #64748b;
  margin-bottom: 10px;
  line-height: 1.5;
}

.highlight {
  color: #3b82f6;
  font-weight: 600;
  font-size: 15px;
}

/* 主内容区域 */
.main-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  background: #f8fafc;
}

/* 顶部搜索栏 */
.top-header {
  background: white;
  border-bottom: 1px solid #e2e8f0;
  padding: 16px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.search-bar {
  position: relative;
  display: flex;
  align-items: center;
}

.search-icon {
  position: absolute;
  left: 12px;
  color: #94a3b8;
  font-size: 16px;
}

.search-input {
  width: 300px;
  padding: 8px 12px 8px 40px;
  border: 1px solid #e2e8f0;
  border-radius: 8px;
  font-size: 14px;
  background: #f8fafc;
  outline: none;
}

.search-input:focus {
  border-color: #3b82f6;
  background: white;
}

.search-input::placeholder {
  color: #94a3b8;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.notification-icon {
  font-size: 20px;
  color: #64748b;
  cursor: pointer;
}

.user-avatar {
  display: flex;
  align-items: center;
  cursor: pointer;
}

.user-avatar img {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  object-fit: cover;
  margin-right: 8px;
}

.dropdown-icon {
  font-size: 12px;
  color: #64748b;
}

/* 用户菜单样式 */
.user-menu-teleport {
  background: white;
  border-radius: 12px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
  border: 1px solid rgba(0, 0, 0, 0.08);
  padding: 8px 0;
  min-width: 200px;
  z-index: 99999;
}

.menu-item {
  display: flex;
  align-items: center;
  padding: 12px 16px;
  cursor: pointer;
  transition: all 0.2s ease;
  color: #333;
  font-size: 14px;
}

.menu-item:hover {
  background: #f5f7fa;
  color: #667eea;
}

.menu-item.logout {
  color: #f56565;
}

.menu-item.logout:hover {
  background: #fef2f2;
  color: #e53e3e;
}

.menu-divider {
  height: 1px;
  background: #e2e8f0;
  margin: 4px 0;
}

.menu-item .el-icon {
  margin-right: 12px;
  font-size: 16px;
}

/* KPI 卡片区域 */
.kpi-section {
  padding: 24px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.kpi-card {
  background: white;
  border-radius: 12px;
  padding: 24px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
  display: flex;
  align-items: center;
  gap: 16px;
}

.kpi-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.kpi-icon .el-icon {
  font-size: 24px;
}

.user-icon {
  background: #fef3c7;
  color: #f59e0b;
}

.paid-user-icon {
  background: #dbeafe;
  color: #3b82f6;
}

.paid-user-icon .currency-symbol {
  position: absolute;
  bottom: -2px;
  right: -2px;
  width: 16px;
  height: 16px;
  background: #3b82f6;
  color: white;
  border-radius: 50%;
  font-size: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.revenue-icon {
  background: #fce7f3;
  color: #ec4899;
}

.kpi-content {
  flex: 1;
}

.kpi-title {
  font-size: 14px;
  color: #64748b;
  margin-bottom: 8px;
}

.kpi-value {
  font-size: 24px;
  font-weight: 700;
  color: #1e293b;
  margin-bottom: 4px;
}

.kpi-trend {
  font-size: 12px;
  font-weight: 500;
}

.kpi-trend.positive {
  color: #059669;
}

.kpi-trend.negative {
  color: #dc2626;
}

/* 图表区域 */
.charts-section {
  padding: 0 24px 24px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.chart-card.full-width {
  width: 100%;
}

.chart-card {
  background: white;
  border-radius: 12px;
  padding: 24px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.chart-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
}

.chart-header h3 {
  font-size: 16px;
  font-weight: 600;
  color: #1e293b;
  margin: 0;
}

.year-selector {
  display: flex;
  align-items: center;
  gap: 8px;
  color: #64748b;
  font-size: 14px;
  cursor: pointer;
}

.chart-container {
  position: relative;
  height: 300px;
}

/* 日活用户趋势图 - SVG曲线图 */
.line-chart {
  position: relative;
  width: 100%;
  height: 200px;
  margin-bottom: 20px;
  background: white;
  border-radius: 8px;
  overflow: hidden;
}

.chart-svg {
  width: 100%;
  height: 100%;
}

.chart-line-path {
  stroke-dasharray: 1000;
  stroke-dashoffset: 1000;
  animation: drawLine 2s ease-in-out forwards;
}

.chart-dot {
  opacity: 0;
  animation: fadeInDots 0.5s ease-in-out forwards;
  animation-delay: 1.5s;
}

.highlight-dot {
  opacity: 0;
  animation: highlightDot 0.5s ease-in-out forwards;
  animation-delay: 2s;
}

.highlight-ring {
  opacity: 0;
  animation: highlightRing 1s ease-in-out infinite;
  animation-delay: 2s;
}

.tooltip-group {
  opacity: 0;
  animation: fadeInTooltip 0.5s ease-in-out forwards;
  animation-delay: 2.5s;
}

.tooltip-bg {
  filter: drop-shadow(0 4px 12px rgba(0, 0, 0, 0.15));
}

.tooltip-arrow {
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
}

/* 动画效果 */
@keyframes drawLine {
  to {
    stroke-dashoffset: 0;
  }
}

@keyframes fadeInDots {
  to {
    opacity: 1;
  }
}

@keyframes highlightDot {
  to {
    opacity: 1;
  }
}

@keyframes highlightRing {
  0%, 100% {
    opacity: 0.2;
    transform: scale(1);
  }
  50% {
    opacity: 0.4;
    transform: scale(1.2);
  }
}

@keyframes fadeInTooltip {
  to {
    opacity: 1;
  }
}

/* 悬停效果 */
.chart-dot:hover {
  r: 6;
  fill: #2563eb;
  transition: all 0.2s ease;
}

.highlight-dot:hover {
  r: 8;
  fill: #2563eb;
  transition: all 0.2s ease;
}

.chart-x-axis {
  display: flex;
  justify-content: space-between;
  padding: 0 20px;
  font-size: 12px;
  color: #64748b;
}

.chart-y-axis {
  position: absolute;
  left: 0;
  top: 0;
  height: 200px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  font-size: 12px;
  color: #64748b;
}

/* 用户转化率图 */
.bar-chart {
  display: flex;
  align-items: end;
  justify-content: space-between;
  height: 200px;
  margin-bottom: 20px;
  padding: 0 20px;
}

.bar {
  width: 20px;
  background: #dbeafe;
  border-radius: 2px 2px 0 0;
  transition: all 0.3s ease;
}

.bar.active {
  background: #3b82f6;
}

.bar:hover {
  background: #2563eb;
}

/* 响应式设计 */
@media (max-width: 1024px) {
  .kpi-section {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .dashboard {
    flex-direction: column;
  }
  
  .sidebar {
    width: 100%;
    height: auto;
  }
  
  .nav-menu {
    display: flex;
    overflow-x: auto;
    padding: 0 16px;
  }
  
  .nav-item {
    white-space: nowrap;
    margin-right: 16px;
    margin-bottom: 0;
  }
  
  .sidebar-footer {
    display: none;
  }
  
  .search-input {
    width: 200px;
  }
  
  .kpi-section {
    padding: 16px;
  }
  
  .charts-section {
    padding: 0 16px 16px;
  }
}
</style>
