Mobile: Prepare demo app POC with hardcoded data

recipients_app/lib/core/cubits/auth/auth_cubit.dart

@@ -23,12 +23,14 @@ class AuthCubit extends Cubit<AuthState> {
       if (user != null) {
         try {
           final recipient = await userRepository.fetchRecipient(user);
+          final Organization? organization = await _fetchOrganization(recipient);
 
           emit(
             AuthState(
               status: AuthStatus.authenticated,
               firebaseUser: user,
               recipient: recipient,
+              organization: organization,
             ),
           );
         } on Exception catch (ex, stackTrace) {
@@ -56,12 +58,7 @@ class AuthCubit extends Cubit<AuthState> {
 
     if (user != null) {
       final recipient = await userRepository.fetchRecipient(user);
-      Organization? organization;
-
-      if (recipient?.organizationRef != null) {
-        organization = await organizationRepository
-            .fetchOrganization(recipient!.organizationRef!);
-      }
+      final Organization? organization = await _fetchOrganization(recipient);
 
       emit(
         AuthState(
@@ -104,4 +101,11 @@ class AuthCubit extends Cubit<AuthState> {
     await userRepository.signOut();
     emit(const AuthState());
   }
+
+  Future<Organization?> _fetchOrganization(Recipient? recipient) async {
+    if (recipient?.organizationRef != null) {
+      return await organizationRepository.fetchOrganization(recipient!.organizationRef!);
+    }
+    return null;
+  }
 }

recipients_app/lib/core/cubits/auth/auth_state.dart

@@ -26,19 +26,21 @@ class AuthState extends Equatable {
   });
 
   @override
-  List<Object?> get props => [status, firebaseUser, recipient, exception];
+  List<Object?> get props => [status, firebaseUser, recipient, exception, organization];
 
   AuthState copyWith({
     AuthStatus? status,
     User? firebaseUser,
     Recipient? recipient,
     Exception? exception,
+    Organization? organization,
   }) {
     return AuthState(
       status: status ?? this.status,
       firebaseUser: firebaseUser ?? this.firebaseUser,
       recipient: recipient ?? this.recipient,
       exception: exception ?? this.exception,
+      organization: organization ?? this.organization,
     );
   }
 }

recipients_app/lib/data/datasource/demo/demo_user.dart

@@ -0,0 +1,149 @@
+import "package:firebase_auth/firebase_auth.dart";
+
+class DemoUser implements User {
+  @override
+  String? get displayName => "demo user";
+
+  @override
+  String? get email => null;
+
+  @override
+  bool get emailVerified => true;
+
+  @override
+  Future<String?> getIdToken([bool forceRefresh = false]) {
+    throw UnimplementedError();
+  }
+
+  @override
+  Future<void> delete() {
+    throw UnimplementedError();
+  }
+
+  @override
+  Future<IdTokenResult> getIdTokenResult([bool forceRefresh = false]) {
+    throw UnimplementedError();
+  }
+
+  @override
+  bool get isAnonymous => throw UnimplementedError();
+
+  @override
+  Future<UserCredential> linkWithCredential(AuthCredential credential) {
+    throw UnimplementedError();
+  }
+
+  @override
+  Future<ConfirmationResult> linkWithPhoneNumber(String phoneNumber, [RecaptchaVerifier? verifier]) {
+    throw UnimplementedError();
+  }
+
+  @override
+  Future<UserCredential> linkWithPopup(AuthProvider provider) {
+    throw UnimplementedError();
+  }
+
+  @override
+  Future<UserCredential> linkWithProvider(AuthProvider provider) {
+    throw UnimplementedError();
+  }
+
+  @override
+  Future<void> linkWithRedirect(AuthProvider provider) {
+    throw UnimplementedError();
+  }
+
+  @override
+  UserMetadata get metadata => throw UnimplementedError();
+
+  @override
+  MultiFactor get multiFactor => throw UnimplementedError();
+
+  @override
+  String? get phoneNumber => throw UnimplementedError();
+
+  @override
+  String? get photoURL => throw UnimplementedError();
+
+  @override
+  List<UserInfo> get providerData => throw UnimplementedError();
+
+  @override
+  Future<UserCredential> reauthenticateWithCredential(AuthCredential credential) {
+    throw UnimplementedError();
+  }
+
+  @override
+  Future<UserCredential> reauthenticateWithPopup(AuthProvider provider) {
+    throw UnimplementedError();
+  }
+
+  @override
+  Future<UserCredential> reauthenticateWithProvider(AuthProvider provider) {
+    throw UnimplementedError();
+  }
+
+  @override
+  Future<void> reauthenticateWithRedirect(AuthProvider provider) {
+    throw UnimplementedError();
+  }
+
+  @override
+  String? get refreshToken => throw UnimplementedError();
+
+  @override
+  Future<void> reload() {
+    throw UnimplementedError();
+  }
+
+  @override
+  Future<void> sendEmailVerification([ActionCodeSettings? actionCodeSettings]) {
+    throw UnimplementedError();
+  }
+
+  @override
+  String? get tenantId => throw UnimplementedError();
+
+  @override
+  String get uid => throw UnimplementedError();
+
+  @override
+  Future<User> unlink(String providerId) {
+    throw UnimplementedError();
+  }
+
+  @override
+  Future<void> updateDisplayName(String? displayName) {
+    throw UnimplementedError();
+  }
+
+  @override
+  Future<void> updateEmail(String newEmail) {
+    throw UnimplementedError();
+  }
+
+  @override
+  Future<void> updatePassword(String newPassword) {
+    throw UnimplementedError();
+  }
+
+  @override
+  Future<void> updatePhoneNumber(PhoneAuthCredential phoneCredential) {
+    throw UnimplementedError();
+  }
+
+  @override
+  Future<void> updatePhotoURL(String? photoURL) {
+    throw UnimplementedError();
+  }
+
+  @override
+  Future<void> updateProfile({String? displayName, String? photoURL}) {
+    throw UnimplementedError();
+  }
+
+  @override
+  Future<void> verifyBeforeUpdateEmail(String newEmail, [ActionCodeSettings? actionCodeSettings]) {
+    throw UnimplementedError();
+  }
+}

recipients_app/lib/data/datasource/demo/no_op_document_reference.dart

@@ -0,0 +1,58 @@
+import "package:cloud_firestore/cloud_firestore.dart";
+
+// We are using DocumentReference in repository / data source. That's why we need to get 
+// no-op implementation for it for demo data source.
+
+// ignore: subtype_of_sealed_class
+class NoOpDocumentReference implements DocumentReference<Map<String, dynamic>> {
+  const NoOpDocumentReference();
+
+  @override
+  CollectionReference<Map<String, dynamic>> collection(String collectionPath) {
+    throw UnimplementedError();
+  }
+
+  @override
+  Future<void> delete() {
+    throw UnimplementedError();
+  }
+
+  @override
+  FirebaseFirestore get firestore => throw UnimplementedError();
+
+  @override
+  Future<DocumentSnapshot<Map<String, dynamic>>> get([GetOptions? options]) {
+    throw UnimplementedError();
+  }
+
+  @override
+  String get id => throw UnimplementedError();
+
+  @override
+  CollectionReference<Map<String, dynamic>> get parent => throw UnimplementedError();
+
+  @override
+  String get path => throw UnimplementedError();
+
+  @override
+  Future<void> set(Map<String, dynamic> data, [SetOptions? options]) {
+    throw UnimplementedError();
+  }
+
+  @override
+  Stream<DocumentSnapshot<Map<String, dynamic>>> snapshots(
+      {bool includeMetadataChanges = false, ListenSource source = ListenSource.defaultSource,}) {
+    throw UnimplementedError();
+  }
+
+  @override
+  Future<void> update(Map<Object, Object?> data) {
+    throw UnimplementedError();
+  }
+
+  @override
+  DocumentReference<R> withConverter<R>(
+      {required FromFirestore<R> fromFirestore, required ToFirestore<R> toFirestore,}) {
+    throw UnimplementedError();
+  }
+}

recipients_app/lib/data/datasource/demo/organization_demo_data_source.dart

@@ -0,0 +1,16 @@
+import "package:app/data/datasource/organization_data_source.dart";
+import "package:app/data/models/models.dart";
+import "package:cloud_firestore/cloud_firestore.dart";
+
+class OrganizationDemoDataSource implements OrganizationDataSource {
+  final Organization _organization = _generateOrganization();
+
+  static Organization _generateOrganization() {
+    return const Organization(name: "Demo organization", contactName: "Demo manager", contactNumber: "+232 123456789");
+  }
+
+  @override
+  Future<Organization?> fetchOrganization(DocumentReference<Object?> organizationRef) async {
+    return _organization;
+  }
+}

recipients_app/lib/data/datasource/demo/payment_demo_data_source.dart

@@ -0,0 +1,99 @@
+import "dart:math";
+
+import "package:app/data/datasource/payment_data_source.dart";
+import "package:app/data/models/models.dart";
+import "package:cloud_firestore/cloud_firestore.dart";
+
+const String paymentCollection = "payments";
+
+class PaymentDemoDataSource implements PaymentDataSource {
+  List<SocialIncomePayment> payments = initData();
+
+  static List<SocialIncomePayment> initData() {
+    final List<SocialIncomePayment> payments = <SocialIncomePayment>[];
+
+    final nowDate = DateTime.now();
+    final random = Random();
+
+    final confirmedPaymentsCount = random.nextInt(12) + 1;
+    final notConfirmedPaymentsCount = random.nextInt(2) + 1;
+
+    for (int i = 0; i < confirmedPaymentsCount; i++) {
+      final currentDateTime = DateTime(
+        nowDate.year,
+        nowDate.month - confirmedPaymentsCount - notConfirmedPaymentsCount + i,
+        15,
+      );
+      payments.add(
+        SocialIncomePayment(
+          id: "${currentDateTime.year}-${currentDateTime.month}",
+          paymentAt: Timestamp.fromDate(currentDateTime),
+          currency: "SLE",
+          amount: 700,
+          status: PaymentStatus.confirmed,
+        ),
+      );
+    }
+
+    for (int i = 0; i < notConfirmedPaymentsCount; i++) {
+      final currentDateTime = DateTime(
+        nowDate.year,
+        nowDate.month - notConfirmedPaymentsCount + i,
+        15,
+      );
+      payments.add(
+        SocialIncomePayment(
+          id: "${currentDateTime.year}-${currentDateTime.month}",
+          paymentAt: Timestamp.fromDate(currentDateTime),
+          currency: "SLE",
+          amount: 700,
+          status: PaymentStatus.paid,
+        ),
+      );
+    }
+
+    payments.sort((a, b) => a.id.compareTo(b.id));
+
+    return payments;
+  }
+
+  @override
+  Future<List<SocialIncomePayment>> fetchPayments({
+    required String recipientId,
+  }) async {
+    return payments;
+  }
+
+  /// This updates the payment status to confirmed
+  /// and also sets lastUpdatedAt and lastUpdatedBy to the
+  /// current time and recipient
+  @override
+  Future<void> confirmPayment({
+    required Recipient recipient,
+    required SocialIncomePayment payment,
+  }) async {
+    final updatedPayment = payment.copyWith(
+      status: PaymentStatus.confirmed,
+      updatedBy: recipient.userId,
+    );
+
+    final indexWhere = payments.indexWhere((element) => element.id == updatedPayment.id);
+    payments[indexWhere] = updatedPayment;
+  }
+
+  @override
+  Future<void> contestPayment({
+    required Recipient recipient,
+    required SocialIncomePayment payment,
+    required String contestReason,
+  }) async {
+    final updatedPayment = payment.copyWith(
+      status: PaymentStatus.contested,
+      comments: contestReason,
+      updatedBy: recipient.userId,
+    );
+
+    final indexWhere = payments.indexWhere((element) => element.id == updatedPayment.id);
+    payments[indexWhere] = updatedPayment;
+  }
+}