<template>
  <div class="dashboard-container">
    <!-- 欢迎区域 -->
    <div class="welcome-section">
      <div class="welcome-content">
        <h1 class="welcome-title">欢迎使用 Apple经销商ERP系统</h1>
        <p class="welcome-subtitle" v-if="loading">正在加载用户信息...</p>
        <p class="welcome-subtitle" v-else>您好，{{ userInfo?.username || userInfo?.realName || '用户' }}！今天是 {{ currentDate }}</p>
      </div>
      <div class="user-info">
        <div class="user-avatar">
          <span>{{ getUserInitials() }}</span>
        </div>
        <div class="user-details">
          <div class="user-name">{{ userInfo?.username || userInfo?.realName || '未知用户' }}</div>
          <div class="user-role">{{ getRoleName(userInfo) || '普通用户' }}</div>
        </div>
      </div>
    </div>

    <!-- 核心业务统计 -->
    <div class="stats-section">
      <h2 class="section-title">核心业务概览</h2>
      <div class="stats-grid">
        <div class="stat-card primary">
          <div class="stat-icon">📦</div>
          <div class="stat-content">
            <div class="stat-label">今日订单</div>
            <div class="stat-value">{{ statsLoading ? '...' : (todayStats.todayOrderCount || 0) }}</div>
            <div class="stat-change positive">{{ todayStats.orderGrowthRate || '+12.5%' }}</div>
          </div>
        </div>
        
        <div class="stat-card success">
          <div class="stat-icon">🚚</div>
          <div class="stat-content">
            <div class="stat-label">待出库</div>
            <div class="stat-value">{{ statsLoading ? '...' : (todayStats.pendingDeliveryCount || 0) }}</div>
            <div class="stat-change">需要处理</div>
          </div>
        </div>
        
        <div class="stat-card warning">
          <div class="stat-icon">🧾</div>
          <div class="stat-content">
            <div class="stat-label">待开票</div>
            <div class="stat-value">{{ statsLoading ? '...' : (todayStats.pendingInvoiceCount || 0) }}</div>
            <div class="stat-change">待处理</div>
          </div>
        </div>
        
        <div class="stat-card info">
          <div class="stat-icon">💰</div>
          <div class="stat-content">
            <div class="stat-label">今日销售额</div>
            <div class="stat-value">¥{{ statsLoading ? '...' : formatAmount(todayStats.todaySalesAmount || 0) }}</div>
            <div class="stat-change positive">{{ todayStats.salesGrowthRate || '+8.2%' }}</div>
          </div>
        </div>
      </div>
    </div>

    <!-- 主要内容区域 -->
    <div class="main-content">
      <!-- 快速操作 -->
      <div class="quick-actions-card">
        <h3 class="card-title">快速操作</h3>
        <div class="actions-grid">
          <button class="action-btn primary" @click="navigateTo('/main/order')">
            <div class="action-icon">📋</div>
            <div class="action-text">
              <div class="action-title">订单管理</div>
              <div class="action-desc">查看和管理订单</div>
            </div>
          </button>
          
          <button class="action-btn success" @click="navigateTo('/main/delivery')">
            <div class="action-icon">🚚</div>
            <div class="action-text">
              <div class="action-title">出库管理</div>
              <div class="action-desc">处理出库业务</div>
            </div>
          </button>
          
          <button class="action-btn warning" @click="navigateTo('/main/invoice')">
            <div class="action-icon">🧾</div>
            <div class="action-text">
              <div class="action-title">发票管理</div>
              <div class="action-desc">开具和管理发票</div>
            </div>
          </button>
          
          <button class="action-btn info" @click="navigateTo('/main/rebate')">
            <div class="action-icon">💰</div>
            <div class="action-text">
              <div class="action-title">返利管理</div>
              <div class="action-desc">返利计算和发放</div>
            </div>
          </button>
          
          <button class="action-btn secondary" @click="navigateTo('/main/product')">
            <div class="action-icon">📱</div>
            <div class="action-text">
              <div class="action-title">产品管理</div>
              <div class="action-desc">管理产品信息</div>
            </div>
          </button>
          
          <button class="action-btn secondary" @click="navigateTo('/main/dealer')">
            <div class="action-icon">🏢</div>
            <div class="action-text">
              <div class="action-title">经销商管理</div>
              <div class="action-desc">管理经销商信息</div>
            </div>
          </button>
        </div>
      </div>

      <!-- 系统信息 -->
      <div class="system-info-card">
        <h3 class="card-title">系统信息</h3>
        <div class="info-list">
          <div class="info-item">
            <div class="info-label">系统版本</div>
            <div class="info-value">{{ todayStats.systemVersion }}</div>
          </div>
          <div class="info-item">
            <div class="info-label">当前时间</div>
            <div class="info-value">{{ currentTime }}</div>
          </div>
          <div class="info-item">
            <div class="info-label">系统状态</div>
            <div class="info-value" :class="{ 'status-normal': todayStats.systemStatus === '正常运行', 'status-error': todayStats.systemStatus !== '正常运行' }">
              {{ todayStats.systemStatus }}
            </div>
          </div>
          <div class="info-item">
            <div class="info-label">在线用户</div>
            <div class="info-value">{{ todayStats.onlineUserCount }}</div>
          </div>
        </div>
      </div>
    </div>

    <!-- 最近活动 -->
    <div class="recent-activities">
      <h3 class="card-title">最近活动</h3>
      <div class="activity-list" v-if="!activitiesLoading">
        <div class="activity-item" v-for="activity in recentActivities" :key="activity.id">
          <div class="activity-icon" :class="activity.type">
            {{ getActivityIcon(activity.type) }}
          </div>
          <div class="activity-content">
            <div class="activity-title">{{ activity.title }}</div>
            <div class="activity-time">{{ activity.time }}</div>
          </div>
        </div>
        <div v-if="recentActivities.length === 0" class="no-activities">
          暂无最近活动
        </div>
      </div>
      <div v-else class="loading-activities">
        正在加载活动数据...
      </div>
    </div>
  </div>
</template>

<script setup lang="ts">
import { ref, onMounted, computed } from 'vue'
import { useRouter } from 'vue-router'
import { request } from '@/utils/request'
import dashboardApi, { type DashboardStats, type RecentActivity } from '@/api/dashboard'

const router = useRouter()
const currentTime = ref('')
const currentDate = ref('')
const userInfo = ref<any>(null)
const loading = ref(false)
const statsLoading = ref(false)

// 今日统计数据
const todayStats = ref<DashboardStats>({
  todayOrderCount: 0,
  pendingDeliveryCount: 0,
  pendingInvoiceCount: 0,
  todaySalesAmount: 0,
  onlineUserCount: 0,
  systemStatus: '正常运行',
  systemVersion: 'v1.0.0',
  orderGrowthRate: '+12.5%',
  salesGrowthRate: '+8.2%'
})

// 最近活动数据
const recentActivities = ref<RecentActivity[]>([])
const activitiesLoading = ref(false)

// 获取用户姓名首字母
const getUserInitials = () => {
  const name = userInfo.value?.username || userInfo.value?.realName || 'U'
  return name.charAt(0).toUpperCase()
}

// 获取角色名称
const getRoleName = (userInfo: any) => {
  // 优先使用roles字段中的角色信息
  if (userInfo?.roles && Array.isArray(userInfo.roles) && userInfo.roles.length > 0) {
    return userInfo.roles[0].roleName || '普通用户'
  }
  
  // 如果没有roles字段，回退到authorities
  const authorities = userInfo?.authorities
  if (authorities && Array.isArray(authorities)) {
    // 查找ROLE_开头的权限
    const roleAuthority = authorities.find(auth => 
      auth.authority && auth.authority.startsWith('ROLE_')
    )
    
    if (roleAuthority) {
      // 移除ROLE_前缀并转换为中文
      const roleName = roleAuthority.authority.replace('ROLE_', '')
      const roleMap: { [key: string]: string } = {
        'ADMIN': '管理员',
        'USER': '普通用户',
        'MANAGER': '经理',
        'OPERATOR': '操作员'
      }
      return roleMap[roleName] || roleName
    }
  }
  
  return '普通用户'
}

// 格式化金额
const formatAmount = (amount: number) => {
  return amount.toLocaleString('zh-CN', { minimumFractionDigits: 2 })
}

// 获取活动图标
const getActivityIcon = (type: string) => {
  const iconMap: { [key: string]: string } = {
    'order': '📋',
    'delivery': '🚚',
    'invoice': '🧾',
    'rebate': '💰',
    'system': '⚙️'
  }
  return iconMap[type] || '📄'
}

// 获取今日统计数据
const fetchTodayStats = async () => {
  try {
    statsLoading.value = true
    console.log('开始获取首页统计数据...')
    
    const response = await dashboardApi.getDashboardStats()
    todayStats.value = response
    console.log('首页统计数据获取成功:', response)
  } catch (error: any) {
    console.error('获取统计数据失败:', error)
    console.error('错误详情:', error?.message)
    // 如果API调用失败，使用默认值
    todayStats.value = {
      todayOrderCount: 0,
      pendingDeliveryCount: 0,
      pendingInvoiceCount: 0,
      todaySalesAmount: 0,
      onlineUserCount: 0,
      systemStatus: '系统异常',
      systemVersion: 'v1.0.0',
      orderGrowthRate: '0%',
      salesGrowthRate: '0%'
    }
  } finally {
    statsLoading.value = false
  }
}

// 获取最近活动
const fetchRecentActivities = async () => {
  try {
    activitiesLoading.value = true
    console.log('开始获取最近活动数据...')
    
    const response = await dashboardApi.getRecentActivities()
    recentActivities.value = response
    console.log('最近活动数据获取成功:', response)
  } catch (error: any) {
    console.error('获取最近活动失败:', error)
    console.error('错误详情:', error?.message)
    // 如果API调用失败，使用默认值
    recentActivities.value = []
  } finally {
    activitiesLoading.value = false
  }
}

// 获取用户信息
const fetchUserInfo = async () => {
  try {
    loading.value = true
    const response = await request.get('/api/auth/userinfo')
    userInfo.value = response
    console.log('用户信息:', response)
  } catch (error) {
    console.error('获取用户信息失败:', error)
    // 如果获取失败，尝试从本地存储获取
    const storedUserInfo = localStorage.getItem('userInfo')
    if (storedUserInfo) {
      userInfo.value = JSON.parse(storedUserInfo)
    }
  } finally {
    loading.value = false
  }
}

// 更新时间
const updateTime = () => {
  const now = new Date()
  currentTime.value = now.toLocaleString('zh-CN', {
    year: 'numeric',
    month: '2-digit',
    day: '2-digit',
    hour: '2-digit',
    minute: '2-digit',
    second: '2-digit'
  })
  currentDate.value = now.toLocaleDateString('zh-CN', {
    year: 'numeric',
    month: 'long',
    day: 'numeric',
    weekday: 'long'
  })
}

onMounted(() => {
  // 更新当前时间
  updateTime()
  setInterval(updateTime, 1000)
  
  // 检查是否已登录
  const token = localStorage.getItem('token')
  if (!token) {
    router.push('/')
    return
  }
  
  // 获取用户信息、统计数据和最近活动
  fetchUserInfo()
  fetchTodayStats()
  fetchRecentActivities()
})

// 页面跳转函数
const navigateTo = (path: string) => {
  router.push(path).catch(err => {
    console.error('页面跳转失败:', err)
  })
}

const logout = () => {
  // 清除本地存储
  localStorage.removeItem('token')
  localStorage.removeItem('userInfo')
  
  // 跳转到登录页
  router.push('/')
}
</script>

<style scoped lang="scss">
.dashboard-container {
  padding: 24px;
  min-height: 100vh;
  background: #f5f7fa;
}

// 欢迎区域
.welcome-section {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  padding: 32px;
  border-radius: 12px;
  margin-bottom: 32px;
  box-shadow: 0 8px 32px rgba(102, 126, 234, 0.3);

  .welcome-content {
    .welcome-title {
      font-size: 28px;
      font-weight: 700;
      margin: 0 0 8px 0;
      text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    }

    .welcome-subtitle {
      font-size: 16px;
      margin: 0;
      opacity: 0.9;
    }
  }

  .user-info {
    display: flex;
    align-items: center;
    gap: 16px;

    .user-avatar {
      width: 60px;
      height: 60px;
      background: rgba(255, 255, 255, 0.2);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 24px;
      font-weight: bold;
      backdrop-filter: blur(10px);
    }

    .user-details {
      .user-name {
        font-size: 18px;
        font-weight: 600;
        margin-bottom: 4px;
      }

      .user-role {
        font-size: 14px;
        opacity: 0.8;
      }
    }
  }
}

// 统计区域
.stats-section {
  margin-bottom: 32px;

  .section-title {
    font-size: 20px;
    font-weight: 600;
    color: #333;
    margin: 0 0 20px 0;
  }

  .stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
  }

  .stat-card {
    background: white;
    padding: 24px;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    display: flex;
    align-items: center;
    gap: 20px;
    transition: all 0.3s ease;
    border-left: 4px solid;

    &:hover {
      transform: translateY(-4px);
      box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
    }

    &.primary {
      border-left-color: #3498db;
    }

    &.success {
      border-left-color: #2ecc71;
    }

    &.warning {
      border-left-color: #f39c12;
    }

    &.info {
      border-left-color: #9b59b6;
    }

    .stat-icon {
      font-size: 32px;
      width: 60px;
      height: 60px;
      display: flex;
      align-items: center;
      justify-content: center;
      border-radius: 12px;
      background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    }

    .stat-content {
      flex: 1;

      .stat-label {
        font-size: 14px;
        color: #666;
        margin-bottom: 8px;
        font-weight: 500;
      }

      .stat-value {
        font-size: 28px;
        font-weight: 700;
        color: #333;
        margin-bottom: 4px;
      }

      .stat-change {
        font-size: 12px;
        font-weight: 500;

        &.positive {
          color: #2ecc71;
        }

        &:not(.positive) {
          color: #666;
        }
      }
    }
  }
}

// 主要内容区域
.main-content {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 24px;
  margin-bottom: 32px;
}

// 快速操作卡片
.quick-actions-card {
  background: white;
  padding: 24px;
  border-radius: 12px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);

  .card-title {
    font-size: 18px;
    font-weight: 600;
    color: #333;
    margin: 0 0 20px 0;
  }

  .actions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
  }

  .action-btn {
    background: white;
    border: 2px solid #e9ecef;
    border-radius: 12px;
    padding: 20px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 16px;
    text-align: left;

    &:hover {
      transform: translateY(-2px);
      box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
    }

    &.primary {
      border-color: #3498db;
      background: linear-gradient(135deg, #3498db 0%, #2980b9 100%);
      color: white;

      &:hover {
        background: linear-gradient(135deg, #2980b9 0%, #1f618d 100%);
      }
    }

    &.success {
      border-color: #2ecc71;
      background: linear-gradient(135deg, #2ecc71 0%, #27ae60 100%);
      color: white;

      &:hover {
        background: linear-gradient(135deg, #27ae60 0%, #229954 100%);
      }
    }

    &.warning {
      border-color: #f39c12;
      background: linear-gradient(135deg, #f39c12 0%, #e67e22 100%);
      color: white;

      &:hover {
        background: linear-gradient(135deg, #e67e22 0%, #d35400 100%);
      }
    }

    &.info {
      border-color: #9b59b6;
      background: linear-gradient(135deg, #9b59b6 0%, #8e44ad 100%);
      color: white;

      &:hover {
        background: linear-gradient(135deg, #8e44ad 0%, #7d3c98 100%);
      }
    }

    &.secondary {
      border-color: #95a5a6;
      background: linear-gradient(135deg, #95a5a6 0%, #7f8c8d 100%);
      color: white;

      &:hover {
        background: linear-gradient(135deg, #7f8c8d 0%, #6c7b7d 100%);
      }
    }

    .action-icon {
      font-size: 24px;
      width: 40px;
      height: 40px;
      display: flex;
      align-items: center;
      justify-content: center;
      background: rgba(255, 255, 255, 0.2);
      border-radius: 8px;
    }

    .action-text {
      .action-title {
        font-size: 16px;
        font-weight: 600;
        margin-bottom: 4px;
      }

      .action-desc {
        font-size: 12px;
        opacity: 0.8;
      }
    }
  }
}

// 系统信息卡片
.system-info-card {
  background: white;
  padding: 24px;
  border-radius: 12px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);

  .card-title {
    font-size: 18px;
    font-weight: 600;
    color: #333;
    margin: 0 0 20px 0;
  }

  .info-list {
    .info-item {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 12px 0;
      border-bottom: 1px solid #f0f0f0;

      &:last-child {
        border-bottom: none;
      }

      .info-label {
        font-weight: 500;
        color: #666;
        font-size: 14px;
      }

      .info-value {
        color: #333;
        font-weight: 500;

        &.status-normal {
          color: #2ecc71;
        }

        &.status-error {
          color: #e74c3c;
        }
      }
    }
  }
}

// 最近活动
.recent-activities {
  background: white;
  padding: 24px;
  border-radius: 12px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);

  .card-title {
    font-size: 18px;
    font-weight: 600;
    color: #333;
    margin: 0 0 20px 0;
  }

  .activity-list {
    .activity-item {
      display: flex;
      align-items: center;
      gap: 16px;
      padding: 12px 0;
      border-bottom: 1px solid #f0f0f0;

      &:last-child {
        border-bottom: none;
      }

      .activity-icon {
        width: 40px;
        height: 40px;
        border-radius: 8px;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 16px;

        &.order {
          background: #e3f2fd;
          color: #1976d2;
        }

        &.delivery {
          background: #e8f5e8;
          color: #2e7d32;
        }

        &.invoice {
          background: #fff3e0;
          color: #f57c00;
        }

        &.rebate {
          background: #f3e5f5;
          color: #7b1fa2;
        }

        &.system {
          background: #f1f8e9;
          color: #558b2f;
        }
      }

      .activity-content {
        flex: 1;

        .activity-title {
          font-size: 14px;
          color: #333;
          margin-bottom: 4px;
          font-weight: 500;
        }

        .activity-time {
          font-size: 12px;
          color: #666;
        }
      }
    }
  }
  
  .no-activities, .loading-activities {
    text-align: center;
    color: #666;
    padding: 20px;
    font-size: 14px;
  }
}

// 响应式设计
@media (max-width: 1200px) {
  .main-content {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .dashboard-container {
    padding: 16px;
  }

  .welcome-section {
    flex-direction: column;
    text-align: center;
    gap: 20px;

    .user-info {
      justify-content: center;
    }
  }

  .stats-grid {
    grid-template-columns: 1fr;
  }

  .actions-grid {
    grid-template-columns: 1fr;
  }
}
</style>