<!-- 混合布局顶部菜单 -->
<template>
  <el-menu
    mode="horizontal"
    :default-active="activeTopMenuPath"
    :background-color="
      theme === 'dark' || sidebarColorScheme === SidebarColor.CLASSIC_BLUE
        ? variables['menu-background']
        : undefined
    "
    :text-color="
      theme === 'dark' || sidebarColorScheme === SidebarColor.CLASSIC_BLUE
        ? variables['menu-text']
        : undefined
    "
    :active-text-color="
      theme === 'dark' || sidebarColorScheme === SidebarColor.CLASSIC_BLUE
        ? variables['menu-active-text']
        : undefined
    "
    @select="handleMenuSelect"
  >
    <el-menu-item v-for="route in topMenus" :key="route.path" :index="route.path">
      <MenuItemTitle v-if="route.meta" :icon="route.meta.icon" :title="route.meta.title" />
    </el-menu-item>
  </el-menu>
</template>

<script lang="ts" setup>
import MenuItemTitle from "./components/MenuItemTitle.vue";

defineOptions({
  name: "MixTopMenu",
});

import { LocationQueryRaw, RouteRecordRaw } from "vue-router";
import { usePermissionStore, useAppStore, useSettingsStore } from "@/store";
import variables from "@/styles/variables.module.scss";
import { SidebarColor } from "@/enums/settings/theme.enum";

const router = useRouter();
const appStore = useAppStore();
const permissionStore = usePermissionStore();
const settingsStore = useSettingsStore();

// 获取主题
const theme = computed(() => settingsStore.theme);

// 获取浅色主题下的侧边栏配色方案
const sidebarColorScheme = computed(() => settingsStore.sidebarColorScheme);

// 顶部菜单列表
const topMenus = ref<RouteRecordRaw[]>([]);

// 获取当前路由路径的顶部菜单路径
const activeTopMenuPath =
  useRoute().path.split("/").filter(Boolean).length > 1
    ? useRoute().path.match(/^\/[^/]+/)?.[0] || "/"
    : "/";

// 设置当前激活的顶部菜单路径
appStore.activeTopMenu(activeTopMenuPath);

/**
 * 处理菜单点击事件，切换顶部菜单并加载对应的左侧菜单
 * @param routePath 点击的菜单路径
 */
const handleMenuSelect = (routePath: string) => {
  appStore.activeTopMenu(routePath); // 设置激活的顶部菜单
  activateFirstLevelMenu(routePath); // 激活一级菜单并设置左侧二级菜单
};

/**
 * 激活一级菜单并设置左侧二级菜单
 * @param routePath 点击的菜单路径
 */
function activateFirstLevelMenu(routePath: string) {
  permissionStore.updateSideMenu(routePath); // 更新左侧菜单
  navigateToFirstLeftMenu(permissionStore.sideMenuRoutes); // 跳转到左侧第一个菜单
}

/**
 * 跳转到左侧第一个可访问的菜单
 * @param menus 左侧菜单列表
 */
const navigateToFirstLeftMenu = (menus: RouteRecordRaw[]) => {
  if (menus.length === 0) return;

  const [firstMenu] = menus;

  // 如果第一个菜单有子菜单，递归跳转到第一个子菜单
  if (firstMenu.children && firstMenu.children.length > 0) {
    navigateToFirstLeftMenu(firstMenu.children as RouteRecordRaw[]);
  } else if (firstMenu.name) {
    router.push({
      name: firstMenu.name,
      query:
        typeof firstMenu.meta?.params === "object"
          ? (firstMenu.meta.params as LocationQueryRaw)
          : undefined,
    });
  }
};

onMounted(() => {
  topMenus.value = permissionStore.routes.filter((item) => !item.meta || !item.meta.hidden);
});
</script>

<style lang="scss" scoped>
.el-menu {
  width: 100%;
  height: 100%;

  &--horizontal {
    height: $navbar-height !important;

    // 确保菜单项垂直居中
    :deep(.el-menu-item) {
      height: 100%;
      line-height: $navbar-height;
    }

    // 移除默认的底部边框
    &:after {
      display: none;
    }
  }
}
</style>
