AuthService.swift

//
//  AuthService.swift
//  StudyApp
//
//  Created by Kevin Mello on 8/27/25.
//

import Foundation
import Combine

final class AuthService: ObservableObject {
    static let shared = AuthService()
    
    @Published var isLoggedIn: Bool {
        didSet {
            UserDefaults.standard.set(isLoggedIn, forKey: "isLoggedIn")
        }
    }
    
    private init() {
        self.isLoggedIn = UserDefaults.standard.bool(forKey: "isLoggedIn")
    }
    
    // MARK: - Email & Password Login
    func login(email: String, password: String) -> Bool {
        // Placeholder logic for now
        let valid = !email.isEmpty && !password.isEmpty
        isLoggedIn = valid
        return valid
    }
    
    func logout() {
        isLoggedIn = false
    }
    
    // MARK: - Third-party login placeholders
    func loginWithGoogle() {
        // Placeholder for Google sign-in
        isLoggedIn = true
    }
    
    func loginWithApple() {
        // Placeholder for Apple sign-in
        isLoggedIn = true
    }
    
    // MARK: - Guest login
    func continueAsGuest() {
        isLoggedIn = true
    }
}