<template>
  <div class="navigation-layout">
    <!-- 顶部导航栏 -->
    <TopNavigation />

    <!-- 主内容区域 -->
    <div class="layout-content">
      <!-- 面包屑 -->
      <!-- <div class="breadcrumb-wrapper" v-if="breadcrumbItems.length > 0">
        <Breadcrumb :items="breadcrumbItems" />
      </div> -->

      <!-- 侧边栏和内容 -->
      <div class="content-wrapper" v-if="hasSidebarMenus">
        <!-- 侧边栏 -->
        <aside class="sidebar" :class="{ collapsed: sidebarCollapsed }">
          <div class="sidebar-toggle-btn" @click="toggleSidebar">
            <i class="toggle-icon">{{ sidebarCollapsed ? '▶' : '◀' }}</i>
          </div>

          <nav class="sidebar-nav">
            <MenuSidebar
              :menus="sidebarMenus"
              :collapsed="sidebarCollapsed"
              @menu-click="handleMenuClick"
            />
          </nav>
        </aside>

        <!-- 页面内容 -->
        <main class="main-content">
          <router-view />
        </main>
      </div>

      <!-- 没有侧边栏时直接显示内容 -->
      <div class="content-wrapper-full" v-else>
        <main class="main-content-full">
          <router-view />
        </main>
      </div>
    </div>
  </div>
</template>

<script setup lang="ts">
import { ref, computed, watch } from 'vue';
import { useRoute, useRouter } from 'vue-router';
import { useStore } from 'vuex';
import type { SysMenu } from '@/types';
import { MenuType } from '@/types/enums';
import { getMenuPath } from '@/utils/route-generator';
import { TopNavigation, MenuSidebar, Breadcrumb } from '@/components';

const route = useRoute();
const router = useRouter();
const store = useStore();

const sidebarCollapsed = ref(false);

// 获取所有菜单
const allMenus = computed(() => store.getters['auth/menuTree']);

// 获取当前激活的顶层导航菜单
const activeTopMenu = computed(() => {
  const path = route.path;
  
  // 找到匹配的顶层菜单
  for (const menu of allMenus.value) {
    if (menu.type === MenuType.NAVIGATION) {
      if (isPathUnderMenu(path, menu)) {
        return menu;
      }
    }
  }
  
  return null;
});

// 获取当前页面的侧边栏菜单（SIDEBAR类型的子菜单）
const sidebarMenus = computed(() => {
  if (!activeTopMenu.value || !activeTopMenu.value.children) {
    return [];
  }
  
  // 返回SIDEBAR类型的子菜单
  return activeTopMenu.value.children.filter((child: SysMenu) => child.type === MenuType.SIDEBAR);
});

// 是否有侧边栏菜单
const hasSidebarMenus = computed(() => sidebarMenus.value.length > 0);

// 面包屑数据
const breadcrumbItems = computed(() => {
  if (!route.meta?.menuId) return [];
  
  const menuPath = getMenuPath(allMenus.value, route.meta.menuId as string);
  return menuPath.map((menu) => ({
    title: menu.name || '',
    path: menu.url || '',
  }));
});

// 判断路径是否在菜单下
function isPathUnderMenu(path: string, menu: SysMenu): boolean {
  if (menu.url === path) return true;
  
  if (menu.children) {
    for (const child of menu.children) {
      if (isPathUnderMenu(path, child)) {
        return true;
      }
    }
  }
  
  return false;
}

// 切换侧边栏
function toggleSidebar() {
  sidebarCollapsed.value = !sidebarCollapsed.value;
  localStorage.setItem('sidebarCollapsed', String(sidebarCollapsed.value));
}

// 处理菜单点击
function handleMenuClick(menu: SysMenu) {
  if (menu.url && menu.url !== route.path) {
    router.push(menu.url);
  }
}

// 恢复侧边栏状态
const savedState = localStorage.getItem('sidebarCollapsed');
if (savedState !== null) {
  sidebarCollapsed.value = savedState === 'true';
}

// 监听路由变化
watch(
  () => route.path,
  () => {
    // 路由变化时可以做一些处理
  }
);
</script>

<style lang="scss" scoped>
.navigation-layout {
  display: flex;
  flex-direction: column;
  background: #f0f2f5;
}

.layout-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  max-height: calc(100vh - 76px);
  overflow-y: auto;
}

.breadcrumb-wrapper {
  background: white;
  padding: 16px 24px;
  margin: 16px 16px 0 16px;
  border-radius: 4px;
  box-shadow: 0 1px 4px rgba(0, 21, 41, 0.08);
}

.content-wrapper {
  flex: 1;
  display: flex;
  margin: 16px;
  gap: 16px;
}

.sidebar {
  width: 260px;
  background: white;
  border-radius: 4px;
  box-shadow: 0 1px 4px rgba(0, 21, 41, 0.08);
  transition: width 0.3s ease;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  position: relative;

  &.collapsed {
    width: 80px;
  }
}

.sidebar-toggle-btn {
  position: absolute;
  top: 50%;
  right: -12px;
  width: 24px;
  height: 48px;
  background: white;
  border: 1px solid #e8e8e8;
  border-radius: 0 12px 12px 0;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 10;
  transition: all 0.3s;

  &:hover {
    background: #f0f2f5;
  }

  .toggle-icon {
    font-size: 12px;
    color: #666;
  }
}

.sidebar-nav {
  flex: 1;
  overflow-y: auto;
  padding: 16px 0;
}

.main-content {
  flex: 1;
  background: white;
  border-radius: 4px;
  box-shadow: 0 1px 4px rgba(0, 21, 41, 0.08);
  // padding: 24px;
  overflow-y: auto;
  min-width: 0;
}

.content-wrapper-full {
  flex: 1;
  // margin: 16px;
}

.main-content-full {
  background: white;
  border-radius: 4px;
  box-shadow: 0 1px 4px rgba(0, 21, 41, 0.08);
  height: calc(100vh - 76px);
}
</style>

