/// Immutable domain model representing an authenticated Winded user.
///
/// This is a pure-Dart model intentionally decoupled from Firebase types so
/// the rest of the app can depend on it without pulling in firebase_auth.
class AppUser {
  const AppUser({
    required this.uid,
    required this.email,
    this.displayName,
    this.photoUrl,
  });

  final String uid;
  final String email;
  final String? displayName;
  final String? photoUrl;

  AppUser copyWith({
    String? uid,
    String? email,
    String? displayName,
    String? photoUrl,
  }) {
    return AppUser(
      uid: uid ?? this.uid,
      email: email ?? this.email,
      displayName: displayName ?? this.displayName,
      photoUrl: photoUrl ?? this.photoUrl,
    );
  }

  @override
  bool operator ==(Object other) {
    if (identical(this, other)) return true;
    return other is AppUser &&
        other.uid == uid &&
        other.email == email &&
        other.displayName == displayName &&
        other.photoUrl == photoUrl;
  }

  @override
  int get hashCode => Object.hash(uid, email, displayName, photoUrl);

  @override
  String toString() =>
      'AppUser(uid: $uid, email: $email, displayName: $displayName)';
}