<template>
  <template v-for="subItem in menuList" :key="subItem.path">
    <SubMenu v-if="subItem.meta?.flattenSingleChild && subItem.children?.length === 1" :menu-list="subItem.children" />
    <el-sub-menu v-else-if="subItem.children?.length" :index="subItem.path">
      <template #title>
        <el-icon v-if="subItem.meta.icon">
          <component :is="subItem.meta.icon" />
        </el-icon>
        <span class="sle">{{ subItem.meta.title }}</span>
      </template>
      <SubMenu :menu-list="subItem.children" />
    </el-sub-menu>
    <el-menu-item v-else :index="subItem.path" @click="handleClickMenu(subItem)">
      <el-icon v-if="subItem.meta.icon">
        <component :is="subItem.meta.icon" />
      </el-icon>
      <template #title>
        <span class="sle">{{ subItem.meta.title }}</span>
      </template>
    </el-menu-item>
  </template>
</template>

<script setup lang="ts">
import { useRouter } from "vue-router";
import { ElMessage } from "element-plus";
import { checkMenuClickPermission, checkHeadImageBeforeNavigate } from "@/utils/permission";

defineProps<{ menuList: Menu.MenuOptions[] }>();

const router = useRouter();

const handleClickMenu = async (subItem: Menu.MenuOptions) => {
  if (subItem.meta.isLink) return window.open(subItem.meta.isLink, "_blank");

  if (!subItem.path) {
    ElMessage.warning("菜单路径不存在");
    return;
  }

  // 调用权限检查方法，判断是否可以点击（方法内部会显示相应的提示信息）
  const { canClick } = await checkMenuClickPermission(subItem.path);

  if (!canClick) {
    return;
  }

  // 除首页外，未上传头图时弹框引导去上传头图页（参考商家端）
  const canProceed = await checkHeadImageBeforeNavigate(subItem.path);
  if (!canProceed) {
    return;
  }

  // 允许访问，执行路由跳转
  try {
    await router.push(subItem.path);
  } catch (error: any) {
    handleRouteError(error);
  }
};

// 处理路由错误
const handleRouteError = (error: any) => {
  // 如果是导航重复的错误，忽略它
  if (error?.name === "NavigationDuplicated") {
    return;
  }
  // 如果是路由不存在的错误
  if (error?.message?.includes("No match") || error?.message?.includes("not found")) {
    ElMessage.warning("该页面不存在或尚未配置");
  } else {
    console.error("路由跳转失败:", error);
    ElMessage.error("页面跳转失败，请稍后重试");
  }
};
</script>

<style lang="scss">
.el-sub-menu .el-sub-menu__title:hover {
  color: var(--el-menu-hover-text-color) !important;
  background-color: transparent !important;
}
.el-menu--collapse {
  .is-active {
    .el-sub-menu__title {
      color: #ffffff !important;
      background-color: var(--el-color-primary) !important;
    }
  }
}
.el-menu-item {
  &:hover {
    color: var(--el-menu-hover-text-color);
  }
  &.is-active {
    color: var(--el-menu-active-color) !important;
    background-color: var(--el-menu-active-bg-color) !important;
    &::before {
      position: absolute;
      top: 0;
      bottom: 0;
      width: 4px;
      content: "";
      background-color: var(--el-color-primary);
    }
  }
}
.vertical,
.classic,
.transverse {
  .el-menu-item {
    &.is-active {
      &::before {
        left: 0;
      }
    }
  }
}
.columns {
  .el-menu-item {
    &.is-active {
      &::before {
        right: 0;
      }
    }
  }
}
</style>
