"use client";

import { useState, useEffect, useCallback } from "react";
import { getStoredUser, getStoredToken } from "@/app/lib/pocketbase";

export interface AuthAndVipState {
  user: { id: string; email: string } | null;
  vip: boolean;
  loading: boolean;
  refetch: () => Promise<{ user: { id: string; email: string } | null; vip: boolean }>;
}

export function useAuthAndVip(): AuthAndVipState {
  const [user, setUser] = useState<{ id: string; email: string } | null>(null);
  const [vip, setVip] = useState(false);
  const [loading, setLoading] = useState(true);

  const refetch = useCallback(async (): Promise<{ user: { id: string; email: string } | null; vip: boolean }> => {
    setLoading(true);
    try {
      const meRes = await fetch("/api/auth/me", { credentials: "include" });
      const meData = await meRes.json();
      let newUser = meData?.user ?? null;

      if (!newUser) {
        const storedUser = getStoredUser();
        const storedToken = getStoredToken();
        if (storedUser && storedToken) {
          newUser = storedUser;
          try {
            await fetch("/api/auth/sync-session", {
              method: "POST",
              headers: { "Content-Type": "application/json" },
              body: JSON.stringify({ token: storedToken, record: storedUser }),
              credentials: "include",
            });
          } catch {
            /* ignore */
          }
        }
      }

      let newVip = false;
      if (newUser?.email) {
        const vipRes = await fetch(`/api/vip/check?email=${encodeURIComponent(newUser.email)}`, { credentials: "include" });
        const vipData = await vipRes.json();
        newVip = vipData?.vip === true;
      }

      setUser(newUser);
      setVip(newVip);
      return { user: newUser, vip: newVip };
    } catch {
      const storedUser = getStoredUser();
      setUser(storedUser);
      setVip(false);
      return { user: storedUser, vip: false };
    } finally {
      setLoading(false);
    }
  }, []);

  useEffect(() => {
    refetch();
  }, [refetch]);

  return { user, vip, loading, refetch };
}