<template>
  <div class="dashboard-wrapper">
    <div v-if="isAdmin" class="admin-layout" :class="{ 'sidebar-open': isMobileSidebarOpen }">
      <div class="mobile-header">
        <button @click="isMobileSidebarOpen = !isMobileSidebarOpen" class="hamburger-button">
          <span class="hamburger-icon"></span>
        </button>
        <span class="mobile-header-title">管理后台</span>
      </div>
      <div class="admin-sidebar">
        <div class="sidebar-header">
          <h3>管理后台</h3>
        </div>
        <ul class="sidebar-nav">
          <li v-if="hasPrivilege(currentUserData.value.privilege, 'lv-admin')">
            <div @click="dropdownOpen = !dropdownOpen" style="cursor:pointer;display:flex;align-items:center;justify-content:space-between;padding:15px 20px;">
              <span>用户管理</span>
              <span :style="{transform: dropdownOpen ? 'rotate(90deg)' : 'rotate(0deg)', transition: 'transform 0.2s'}">▶</span>
            </div>
            <ul v-show="dropdownOpen" style="list-style:none;padding-left:10px;">
              <li :class="{active: currentAdminView === 'permission-review'}">
                <a @click="selectAdminView('permission-review')">权限审核</a>
              </li>
              <li :class="{active: currentAdminView === 'user-management'}">
                <a @click="selectAdminView('user-management')">用户管理</a>
              </li>
            </ul>
          </li>
          <li v-if="hasPrivilege(currentUserData.value.privilege, 'lv-admin')">
            <div @click="dropdownOpen2 = !dropdownOpen2" style="cursor:pointer;display:flex;align-items:center;justify-content:space-between;padding:15px 20px;">
              <span>赛事管理</span>
              <span :style="{transform: dropdownOpen2 ? 'rotate(90deg)' : 'rotate(0deg)', transition: 'transform 0.2s'}">▶</span>
            </div>
            <ul v-show="dropdownOpen2" style="list-style:none;padding-left:10px;">
              <li :class="{active: currentAdminView === 'event-info-management'}">
                <a @click="selectAdminView('event-info-management')">赛事信息管理</a>
              </li>
              <li :class="{active: currentAdminView === 'player-management'}">
                <a @click="selectAdminView('player-management')">玩家管理</a>
              </li>
            </ul>
          </li>
          <li v-if="hasPrivilege(currentUserData.value.privilege, ['lv-admin', 'lv-mod', 'lv-map', 'lv-user', 'lv-competitor'])">
            <div @click="dropdownOpen3 = !dropdownOpen3" style="cursor:pointer;display:flex;align-items:center;justify-content:space-between;padding:15px 20px;">
              <span>办事大厅</span>
              <span :style="{transform: dropdownOpen3 ? 'rotate(90deg)' : 'rotate(0deg)', transition: 'transform 0.2s'}">▶</span>
            </div>
            <ul v-show="dropdownOpen3" style="list-style:none;padding-left:10px;">
              <li :class="{active: currentAdminView === 'affair-management'}">
                <a @click="selectAdminView('affair-management')">事项管理</a>
              </li>
            </ul>
          </li>
        </ul>
        <div class="sidebar-footer">
          <button @click="selectAdminView('code-generator')" :class="['sidebar-button', 'code-generator-button', { 'active': currentAdminView === 'code-generator' }]">
            代码生成器
          </button>
          <button @click="goToHomePage" class="home-button sidebar-button">
            返回主界面
          </button>
          <button @click="handleLogout" class="logout-button sidebar-button">
            退出登录
          </button>
        </div>
      </div>
      <div class="admin-main-content">

      </div>
    </div>
  </div>
</template>

<script setup>
import { ref, onMounted, computed } from 'vue'
import { useRouter } from 'vue-router'
import { getUserInfo } from '@/utils/jwt'
import { hasPrivilege } from '@/utils/privilege'

const router = useRouter()
const hasToken = ref(false)
const currentUserData = ref(null)
const currentAdminView = ref('event-management')
const isMobileSidebarOpen = ref(false)
const dropdownOpen = ref(false)
const dropdownOpen2 = ref(false)
const dropdownOpen3 = ref(false)

const isAdmin = computed(() => {
  return currentUserData.value && currentUserData.value.privilege === 'lv-admin';
})

onMounted(async () => {
  // 检查是否有token
  const token = localStorage.getItem('access_token')
  hasToken.value = !!token
  if (!token) {
    router.push('/')
    return;
  }

  // 获取用户信息
  try {
    const userInfo = await getUserInfo();
    currentUserData.value = userInfo;
    if (!userInfo || userInfo.privilege !== 'lv-admin') {
      router.push('/')
    }
  } catch (e) {
    router.push('/')
  }
})

const handleLogout = () => {
  // 清除本地存储的 token
  localStorage.removeItem('access_token')
  // 清除当前视图状态 (如果需要)
  currentAdminView.value = 'event-management' 
  isMobileSidebarOpen.value = false; // 退出时关闭侧边栏
  // 跳转到登录页面
  router.push('/')
}

const goToHomePage = () => {
  router.push('/') // 假设主页路由是 '/'
  isMobileSidebarOpen.value = false; // 返回主页时关闭侧边栏
}

// 新增：选择管理员视图的方法
const selectAdminView = (viewName) => {
  currentAdminView.value = viewName
  if (window.innerWidth <= 768) {
    isMobileSidebarOpen.value = false
  }
}
</script>

<style scoped>
/* Global reset and base styles (optional, but good for consistency) */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

.dashboard-wrapper, .admin-layout {
  height: 100%;
  width: 100%;
  overflow-x: hidden; /* Prevent horizontal scroll on body/wrapper */
}

.dashboard-wrapper {
  font-family: 'Arial', sans-serif;
  background-color: #f0f2f5; /* Default background for non-admin or loading states */
}

/* Admin Layout Styles */
.admin-layout {
  display: flex;
  position: relative; /* For mobile sidebar positioning */
}

.admin-sidebar {
  width: 240px; /* Sidebar width */
  background-color: #e0f2fe; /* 淡蓝色 - light sky blue, adjust as needed */
  color: #075985; /* Darker blue for text for contrast */
  display: flex;
  flex-direction: column;
  height: 100%; /* Full height */
  position: fixed; /* Fixed position */
  left: 0;
  top: 0px; /* Stick to the top of the webpage */
  z-index: 1000;
  transition: transform 0.3s ease;
  box-shadow: 2px 0 8px rgba(0,0,0,0.1);
}

.sidebar-header {
  padding: 20px;
  text-align: center;
  border-bottom: 1px solid #bae6fd; /* Lighter blue for border */
}

.sidebar-header h3 {
  color: #0c4a6e; /* Even darker blue for header */
  margin: 0;
  font-size: 1.6rem;
}

.sidebar-nav {
  list-style: none;
  flex-grow: 1;
  overflow-y: auto; /* Allow scrolling for many nav items */
}

.sidebar-nav li a {
  display: block;
  padding: 15px 20px;
  color: #075985;
  text-decoration: none;
  transition: background-color 0.2s, color 0.2s;
  cursor: pointer;
  font-weight: 500;
}

.sidebar-nav li a:hover {
  background-color: #7dd3fc; /* Lighter blue for hover */
  color: #0c4a6e;
}

.sidebar-nav li.active a {
  background-color: #38bdf8; /* Medium blue for active */
  color: #ffffff;
  font-weight: 600;
}

.sidebar-footer {
  padding: 20px;
  border-top: 1px solid #bae6fd;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.sidebar-button {
  width: 100%;
  padding: 12px 15px;
  border-radius: 6px;
  text-align: center;
  font-weight: 500;
  transition: background-color 0.2s, opacity 0.2s;
  border: none;
  color: #fff; 
  cursor: pointer;
}

.sidebar-button.home-button {
  background-color: #0ea5e9; /* Sky blue */
}
.sidebar-button.home-button:hover {
  background-color: #0284c7; /* Darker sky blue */
}

.sidebar-button.code-generator-button {
  background-color: #10b981; /* Emerald green */
}
.sidebar-button.code-generator-button:hover {
  background-color: #059669; /* Darker emerald green */
}
.sidebar-button.code-generator-button.active {
  background-color: #047857;
  color: #ffffff;
}

.sidebar-button.logout-button {
  background-color: #ef4444; /* Red */
}
.sidebar-button.logout-button:hover {
  background-color: #dc2626; /* Darker Red */
}

.admin-main-content {
  flex-grow: 1;
  background-color: #ffffff; /* White background for content */
  padding: 20px;
  margin-left: 240px; /* Same as sidebar width */
  height: 100%;
  overflow-y: auto;
  transition: margin-left 0.3s ease;
}

/* Mobile Header Styles */
.mobile-header {
  display: none; /* Hidden by default, shown on mobile */
  background-color: #e0f2fe; /* Same as sidebar */
  color: #0c4a6e;
  padding: 10px 15px;
  align-items: center;
  position: fixed;
  top: 0px; /* Stick to the top of the webpage */
  left: 0;
  right: 0;
  z-index: 1001; /* Above sidebar when closed */
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.hamburger-button {
  background: none;
  border: none;
  cursor: pointer;
  padding: 10px;
  display: flex; /* For centering span inside */
  align-items: center;
  justify-content: center;
}

.hamburger-icon {
  display: block;
  width: 24px;
  height: 2px;
  background-color: #0c4a6e;
  position: relative;
}

.hamburger-icon::before,
.hamburger-icon::after {
  content: '';
  position: absolute;
  width: 24px;
  height: 2px;
  background-color: #0c4a6e;
  left: 0;
}

.hamburger-icon::before {
  top: -7px;
}

.hamburger-icon::after {
  bottom: -7px;
}

.mobile-header-title {
  margin-left: 15px;
  font-size: 1.2rem;
  font-weight: 600;
}

/* Mobile Responsiveness */
@media (max-width: 768px) {
  .admin-sidebar {
    transform: translateX(-100%); /* Hide sidebar off-screen */
    box-shadow: none; /* Hide shadow when off-screen or covered */
  }

  .admin-layout.sidebar-open .admin-sidebar {
    transform: translateX(0); /* Show sidebar */
    box-shadow: 2px 0 8px rgba(0,0,0,0.15); /* Shadow for open sidebar on mobile */
  }

  .admin-main-content {
    margin-left: 0; /* Content takes full width */
    padding-top: 55px; /* Space for fixed mobile header (now at top:0), adjusted from 70px */
  }

  .mobile-header {
    display: flex;
  }

  .sidebar-header h3 {
    font-size: 1.3rem; /* Slightly smaller header for mobile sidebar */
  }

  .sidebar-nav li a {
    padding: 12px 20px; /* Adjust padding if needed */
  }

  /* Overlay for when mobile sidebar is open */
  .admin-layout.sidebar-open::after {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0,0,0,0.3);
    z-index: 999; /* Below sidebar, above content */
  }
}

/* Styles for the placeholder non-admin page if it's not the main content area */
/*
.dashboard-container { 
  
}
*/
</style>