"use client";

import { createContext, useContext } from "react";
import { User } from "./api";

export interface AuthState {
  token: string | null;
  user: User | null;
  setAuth: (token: string | null, user: User | null) => void;
  logout: () => void;
}

export const AuthContext = createContext<AuthState>({
  token: null,
  user: null,
  setAuth: () => {},
  logout: () => {},
});

export function useAuth() {
  return useContext(AuthContext);
}

export function getStoredToken(): string | null {
  if (typeof window === "undefined") return null;
  return localStorage.getItem("taskteam_token");
}

export function setStoredToken(token: string | null) {
  if (typeof window === "undefined") return;
  if (token) {
    localStorage.setItem("taskteam_token", token);
  } else {
    localStorage.removeItem("taskteam_token");
  }
}

export function getStoredUser(): User | null {
  if (typeof window === "undefined") return null;
  const raw = localStorage.getItem("taskteam_user");
  if (!raw) return null;
  try {
    return JSON.parse(raw);
  } catch {
    return null;
  }
}

export function setStoredUser(user: User | null) {
  if (typeof window === "undefined") return;
  if (user) {
    localStorage.setItem("taskteam_user", JSON.stringify(user));
  } else {
    localStorage.removeItem("taskteam_user");
  }
}