import 'package:firebase_auth/firebase_auth.dart';
import 'package:firebase_database/firebase_database.dart';

class AuthService {
  final FirebaseAuth _auth = FirebaseAuth.instance;

  final FirebaseDatabase _database = FirebaseDatabase.instance;

  User? get currentUser => _auth.currentUser;

  // ================= LOGIN =================

  Future<UserCredential> login({
    required String email,
    required String password,
  }) async {
    return await _auth.signInWithEmailAndPassword(
      email: email,
      password: password,
    );
  }

  // ================= REGISTER =================

  Future<UserCredential> register({
    required String name,
    required String email,
    required String password,
  }) async {
    UserCredential credential = await _auth.createUserWithEmailAndPassword(
      email: email,
      password: password,
    );

    final uid = credential.user!.uid;

    await _database.ref('users').child(uid).set({
      'uid': uid,
      'name': name,
      'email': email,
      'created_at': DateTime.now().toIso8601String(),
    });

    return credential;
  }

  // ================= LOGOUT =================

  Future<void> logout() async {
    await _auth.signOut();
  }

  // ================= GET USER =================

  Future<Map<String, dynamic>?> getUserData() async {
    if (_auth.currentUser == null) {
      return null;
    }

    final uid = _auth.currentUser!.uid;

    final snapshot = await _database.ref('users').child(uid).get();

    if (!snapshot.exists) {
      return null;
    }

    return Map<String, dynamic>.from(snapshot.value as Map<dynamic, dynamic>);
  }
}