import {
  DEFAULT_AUTHENTICATED_LANDING_PATH,
  isGuestOnlyRoute,
  isPublicRoute,
  normalizeSafeRedirect,
} from "@/utils/auth-routes";
import { useAuthSession } from "../composables/useAuthSession";
import { FRONTEND_LOGIN_PATH } from "common/config"

export default defineNuxtRouteMiddleware(async (to) => {
  if(to.path.startsWith("/__nuxt_error")) {
    return
  }
  if(to.path.startsWith("/api")) {
    return
  }
  if(to.path.startsWith("/public")) {
    return
  }
  const { initialized, loggedIn, refresh } = useAuthSession();
  if (!initialized.value) {
    await refresh();
  }

  const currentPath = to.path;
  const currentFullPath = to.fullPath;
  const isLoggedIn = loggedIn.value;

  // 管理员路由守卫：除仪表板外 /admin/* 需要管理员权限
  const isAdminRoute = currentPath.startsWith("/admin");
  const isDashboardOnly = currentPath === "/admin" || currentPath === "/admin/dashboard";
  if (isLoggedIn && isAdminRoute && !isDashboardOnly) {
    const { user } = useAuthSession();
    if (user.value?.role !== "admin") {
      const { $toast } = useNuxtApp();
      $toast?.warning("需要管理员权限");
      return navigateTo("/");
    }
  }

  if (!isLoggedIn && !isPublicRoute(currentPath)) {
    return navigateTo({
      path: FRONTEND_LOGIN_PATH,
      query: { redirect: currentFullPath },
    });
  }

  if (isLoggedIn && isGuestOnlyRoute(currentPath)) {
    const redirectCandidate = Array.isArray(to.query.redirect)
      ? to.query.redirect[0]
      : to.query.redirect;
    const redirectTarget = normalizeSafeRedirect(
      redirectCandidate,
      DEFAULT_AUTHENTICATED_LANDING_PATH,
    );

    if (redirectTarget !== currentFullPath && redirectTarget !== currentPath) {
      return navigateTo(redirectTarget);
    }
    return navigateTo(DEFAULT_AUTHENTICATED_LANDING_PATH);
  }
});