"use client";
import {
  createContext,
  useContext,
  useEffect,
  useState,
  ReactNode,
} from "react";
import { useRouter } from "next/navigation";

interface AuthContextType {
  token: string | null;
  login: (token: string) => void;
  logout: () => void;
  isLoading: boolean;
}

const AuthContext = createContext<AuthContextType | undefined>(undefined);

export function AuthProvider({ children }: { children: ReactNode }) {
  const [token, setToken] = useState<string | null>(null);
  const [isLoading, setIsLoading] = useState(true);
  const router = useRouter();

  useEffect(() => {
    const savedToken = sessionStorage.getItem("token");
    setToken(savedToken);
    setIsLoading(false);
  }, []);

  const login = (newToken: string) => {
    sessionStorage.setItem("token", newToken);
    setToken(newToken);
    router.push("/home");
  };

  const logout = () => {
    sessionStorage.removeItem("token");
    setToken(null);
    router.push("/login");
  };

  return (
    <AuthContext.Provider value={{ token, login, logout, isLoading }}>
      {children}
    </AuthContext.Provider>
  );
}

export const useAuth = () => {
  const context = useContext(AuthContext);
  if (!context) throw new Error("useAuth must be used within AuthProvider");
  return context;
};