Add validation for keys

lib/data/base/text_value.dart

@@ -2,7 +2,7 @@ import '../error/input_error.dart';
 
 class TextValue {
   TextValue({
-    required this.text,
+    this.text = "",
     this.error,
   });
 

lib/data/error/input_error.dart

@@ -16,3 +16,13 @@ class RequiredAmount extends InputError {
   @override
   String text = "Field is required";
 }
+
+class KeyNotBase58Encoded extends InputError {
+  @override
+  String text = "Invalid value, must be base58 encoded";
+}
+
+class KeyLengthInvalid extends InputError {
+  @override
+  String text = "Key value must be between 32 and 44 characters";
+}

lib/di/blocs_providers.dart

@@ -2,6 +2,7 @@ import 'package:flutter/material.dart';
 import 'package:flutter_bloc/flutter_bloc.dart';
 import 'package:sol_pay_gen/domain/generate_transfer_request_qr_use_case.dart';
 import 'package:sol_pay_gen/feature/qr/bloc/qr_generator_cubit.dart';
+import 'package:sol_pay_gen/validator/keys_validator.dart';
 import 'package:sol_pay_gen/validator/number_validator.dart';
 
 import '../data/transfer/transfer_request_repository.dart';
@@ -11,8 +12,10 @@ MultiBlocProvider getBlocProviders({required StatelessWidget child}) {
   return MultiBlocProvider(
     providers: [
       BlocProvider<ParametersInputCubit>(
-        create: (BuildContext context) =>
-            ParametersInputCubit(context.read<NumberValidator>()),
+        create: (BuildContext context) => ParametersInputCubit(
+          context.read<NumberValidator>(),
+          context.read<KeysValidator>(),
+        ),
       ),
       BlocProvider<QrGeneratorCubit>(
         create: (BuildContext context) => QrGeneratorCubit(

lib/di/repositories_providers.dart

@@ -1,5 +1,6 @@
 import 'package:flutter_bloc/flutter_bloc.dart';
 import 'package:sol_pay_gen/data/transfer/transfer_request_repository.dart';
+import 'package:sol_pay_gen/validator/keys_validator.dart';
 import 'package:sol_pay_gen/validator/number_validator.dart';
 
 MultiRepositoryProvider getRepositoryProviders({
@@ -8,10 +9,13 @@ MultiRepositoryProvider getRepositoryProviders({
   return MultiRepositoryProvider(
     providers: [
       RepositoryProvider<TransferRequestRepository>(
-        create: (context) => DefaultTransferRequestRepository(),
+        create: (_) => DefaultTransferRequestRepository(),
       ),
       RepositoryProvider<NumberValidator>(
-        create: (context) => DefaultNumberValidator(),
+        create: (_) => DefaultNumberValidator(),
+      ),
+      RepositoryProvider<KeysValidator>(
+        create: (_) => DefaultKeysValidator(),
       )
     ],
     child: blocProviders,

lib/feature/input/bloc/parameters_input_cubit.dart

@@ -2,18 +2,22 @@ import 'package:flutter_bloc/flutter_bloc.dart';
 import 'package:sol_pay_gen/data/base/text_value.dart';
 import 'package:sol_pay_gen/feature/input/bloc/parameters_input_state.dart';
 
+import '../../../data/error/input_error.dart';
+import '../../../validator/keys_validator.dart';
 import '../../../validator/number_validator.dart';
 
 class ParametersInputCubit extends Cubit<ParametersInputState> {
   final NumberValidator _numberValidator;
+  final KeysValidator _keysValidator;
 
   ParametersInputCubit(
     this._numberValidator,
+    this._keysValidator,
   ) : super(
           ParametersInputState(
-            address: TextValue(text: ""),
-            amount: TextValue(text: ""),
-            reference: null,
+            address: TextValue(),
+            amount: TextValue(),
+            reference: TextValue(),
             memo: null,
             message: null,
             label: null,
@@ -22,9 +26,12 @@ class ParametersInputCubit extends Cubit<ParametersInputState> {
         );
 
   void onAddressChange(String address) {
-    emit(
-      state.copyWith(address: TextValue(text: address)),
-    );
+    emit(state.copyWith(
+      address: TextValue(
+        text: address,
+        error: _validateAddress(address),
+      ),
+    ));
   }
 
   void onAmountChange(String amount) {
@@ -45,7 +52,12 @@ class ParametersInputCubit extends Cubit<ParametersInputState> {
   }
 
   void onReferenceChange(String reference) {
-    emit(state.copyWith(reference: reference));
+    emit(state.copyWith(
+      reference: TextValue(
+        text: reference,
+        error: reference.isEmpty ? null : _keysValidator.validateKey(reference),
+      ),
+    ));
   }
 
   void onSplTokenChange(String token) {
@@ -57,6 +69,16 @@ class ParametersInputCubit extends Cubit<ParametersInputState> {
   }
 
   void onValidate() {
-    emit(state.validate());
+    emit(state.copyWith(
+      address: state.address.copyWith(
+        error: _validateAddress(state.address.text),
+      ),
+    ));
+  }
+
+  InputError? _validateAddress(String address) {
+    return address.isEmpty
+        ? RequiredAmount()
+        : _keysValidator.validateKey(address);
   }
 }

lib/feature/input/bloc/parameters_input_state.dart

@@ -1,11 +1,10 @@
 import 'package:equatable/equatable.dart';
 import 'package:sol_pay_gen/data/base/text_value.dart';
-import 'package:sol_pay_gen/data/error/input_error.dart';
 
 class ParametersInputState extends Equatable {
   final TextValue address;
   final TextValue amount;
-  final String? reference;
+  final TextValue reference;
   final String? label;
   final String? message;
   final String? memo;
@@ -36,7 +35,7 @@ class ParametersInputState extends Equatable {
     TextValue? amount,
     String? label,
     String? message,
-    String? reference,
+    TextValue? reference,
     String? memo,
     String? splTokenAddress,
   }) =>
@@ -50,13 +49,6 @@ class ParametersInputState extends Equatable {
         splTokenAddress: splTokenAddress ?? this.splTokenAddress,
       );
 
-  ParametersInputState validate() {
-    return copyWith(
-      address: address.copyWith(
-        error: address.text.isEmpty ? RequiredAmount() : null,
-      ),
-    );
-  }
-
-  bool isValid() => amount.isValid() && address.isValid();
+  bool isValid() =>
+      amount.isValid() && address.isValid() && reference.isValid();
 }