Initial commit: QR Scanner Flutter app

App móvil para validar pases QR contra base-admin-web con login Cognito,
escáner en tiempo real, feedback auditivo/háptico y README completo.

lib/models/auth_session.dart

@@ -0,0 +1,64 @@
+import 'package:qrscanner/models/login_response.dart';
+
+class AuthSession {
+  const AuthSession({
+    required this.username,
+    required this.accessToken,
+    required this.tokenType,
+    required this.expiresIn,
+    required this.roles,
+    this.refreshToken,
+    this.idToken,
+  });
+
+  factory AuthSession.fromLoginResponse(LoginResponse response) {
+    return AuthSession(
+      username: response.username ?? '',
+      accessToken: response.accessToken ?? '',
+      refreshToken: response.refreshToken,
+      idToken: response.idToken,
+      tokenType: response.tokenType ?? 'Bearer',
+      expiresIn: response.expiresIn ?? 0,
+      roles: response.roles,
+    );
+  }
+
+  factory AuthSession.fromJson(Map<String, dynamic> json) {
+    return AuthSession(
+      username: json['username'] as String? ?? '',
+      accessToken: json['accessToken'] as String? ?? '',
+      refreshToken: json['refreshToken'] as String?,
+      idToken: json['idToken'] as String?,
+      tokenType: json['tokenType'] as String? ?? 'Bearer',
+      expiresIn: (json['expiresIn'] as num?)?.toInt() ?? 0,
+      roles: (json['roles'] as List<dynamic>?)
+              ?.map((role) => role.toString())
+              .toList() ??
+          const [],
+    );
+  }
+
+  final String username;
+  final String accessToken;
+  final String? refreshToken;
+  final String? idToken;
+  final String tokenType;
+  final int expiresIn;
+  final List<String> roles;
+
+  /// Token usado en las peticiones API (`Authorization: Bearer ...`).
+  String get authorizationHeader => '$tokenType $accessToken';
+
+  bool get isScanner =>
+      roles.contains('ROLE_SCANNER') || roles.contains('scanners');
+
+  Map<String, dynamic> toJson() => {
+        'username': username,
+        'accessToken': accessToken,
+        'refreshToken': refreshToken,
+        'idToken': idToken,
+        'tokenType': tokenType,
+        'expiresIn': expiresIn,
+        'roles': roles,
+      };
+}

lib/models/login_response.dart

@@ -0,0 +1,64 @@
+class LoginResponse {
+  const LoginResponse({
+    required this.success,
+    this.accessToken,
+    this.refreshToken,
+    this.idToken,
+    this.tokenType,
+    this.expiresIn,
+    this.username,
+    this.roles = const [],
+    this.message,
+  });
+
+  factory LoginResponse.fromJson(Map<String, dynamic> json) {
+    return LoginResponse(
+      success: json['success'] == true,
+      accessToken: json['accessToken'] as String?,
+      refreshToken: json['refreshToken'] as String?,
+      idToken: json['idToken'] as String?,
+      tokenType: json['tokenType'] as String?,
+      expiresIn: (json['expiresIn'] as num?)?.toInt(),
+      username: json['username'] as String?,
+      roles: (json['roles'] as List<dynamic>?)
+              ?.map((role) => role.toString())
+              .toList() ??
+          const [],
+      message: json['message'] as String?,
+    );
+  }
+
+  final bool success;
+  final String? accessToken;
+  final String? refreshToken;
+  final String? idToken;
+  final String? tokenType;
+  final int? expiresIn;
+  final String? username;
+  final List<String> roles;
+  final String? message;
+
+  LoginResponse copyWith({
+    bool? success,
+    String? accessToken,
+    String? refreshToken,
+    String? idToken,
+    String? tokenType,
+    int? expiresIn,
+    String? username,
+    List<String>? roles,
+    String? message,
+  }) {
+    return LoginResponse(
+      success: success ?? this.success,
+      accessToken: accessToken ?? this.accessToken,
+      refreshToken: refreshToken ?? this.refreshToken,
+      idToken: idToken ?? this.idToken,
+      tokenType: tokenType ?? this.tokenType,
+      expiresIn: expiresIn ?? this.expiresIn,
+      username: username ?? this.username,
+      roles: roles ?? this.roles,
+      message: message ?? this.message,
+    );
+  }
+}

lib/models/pass_code.dart

@@ -0,0 +1,31 @@
+class PassCode {
+  const PassCode({
+    required this.id,
+    required this.name,
+    required this.code,
+    required this.status,
+    required this.scanned,
+    required this.createdAt,
+    this.scannedAt,
+  });
+
+  factory PassCode.fromJson(Map<String, dynamic> json) {
+    return PassCode(
+      id: (json['id'] as num).toInt(),
+      name: json['name'] as String? ?? '',
+      code: json['code'] as String? ?? '',
+      status: json['status'] as String? ?? '',
+      scanned: json['scanned'] == true,
+      createdAt: json['createdAt'] as String? ?? '',
+      scannedAt: json['scannedAt'] as String?,
+    );
+  }
+
+  final int id;
+  final String name;
+  final String code;
+  final String status;
+  final bool scanned;
+  final String createdAt;
+  final String? scannedAt;
+}

lib/models/scan_response.dart

@@ -0,0 +1,23 @@
+import 'package:qrscanner/models/pass_code.dart';
+
+class ScanResponse {
+  const ScanResponse({
+    required this.success,
+    this.message,
+    this.passCode,
+  });
+
+  factory ScanResponse.fromJson(Map<String, dynamic> json) {
+    return ScanResponse(
+      success: json['success'] == true,
+      message: json['message'] as String?,
+      passCode: json['passCode'] is Map<String, dynamic>
+          ? PassCode.fromJson(json['passCode'] as Map<String, dynamic>)
+          : null,
+    );
+  }
+
+  final bool success;
+  final String? message;
+  final PassCode? passCode;
+}