change whole project logic

lib/bloc/crypto/crypto_bloc.dart

@@ -6,7 +6,7 @@ import 'package:flutter_bloc/flutter_bloc.dart';
 class CryptoBloc extends Bloc<CryptoEvent, CryptoState> {
   final ICryptoCurrencyRepository _repository;
   CryptoBloc(this._repository) : super(CryptoInitState()) {
-    on<CryptoInitializeEvent>((event, state) async {
+    on<CryptoInitializeEvent>((event, emit) async {
       emit(CryptoLoadingState());
       final response = await _repository.getCryptoCurrencies();
       emit(CryptoResponseState(response));

lib/data/datasource/crypto_currency_datasource.dart

@@ -1,5 +1,6 @@
 import 'package:currency_exchange_rate_app_flutter/data/model/crypto_currency.dart';
 import 'package:currency_exchange_rate_app_flutter/di/di.dart';
+import 'package:currency_exchange_rate_app_flutter/util/api_exception.dart';
 import 'package:dio/dio.dart';
 
 abstract class ICryptoCurrencyDataSource {
@@ -15,12 +16,16 @@ class CryptoCurrencyRemoteDatasource extends ICryptoCurrencyDataSource {
       Map<String, dynamic> qParams = {
         "token": "440714:668d2eb4c7b96",
       };
-      var response = await _dio.get(
-          "DigitalCurrency/", queryParameters: qParams);
-      return response.data["result"].map<CryptoCurrency>((jsonObject) =>
-          CryptoCurrency.fromMapJson(jsonObject)).toList();
+      var response =
+          await _dio.get("DigitalCurrency/", queryParameters: qParams);
+      return response.data["result"]
+          .map<CryptoCurrency>(
+              (jsonObject) => CryptoCurrency.fromMapJson(jsonObject))
+          .toList();
+    } on DioException catch (ex) {
+      throw ApiException(ex.response!.statusCode, ex.response!.statusMessage);
     } catch (ex) {
-      throw Exception();
+      throw ApiException(0, "Unknown Error!");
     }
   }
-}
+}

lib/data/repository/crypto_currency_repository.dart

@@ -1,5 +1,6 @@
 import 'package:currency_exchange_rate_app_flutter/data/datasource/crypto_currency_datasource.dart';
 import 'package:currency_exchange_rate_app_flutter/data/model/crypto_currency.dart';
+import 'package:currency_exchange_rate_app_flutter/util/api_exception.dart';
 import 'package:dartz/dartz.dart';
 
 import '../../di/di.dart';
@@ -16,9 +17,8 @@ class CryptoCurrencyRepository extends ICryptoCurrencyRepository {
     try {
       var response = await _dataSource.getCryptoCurrencies();
       return right(response);
-
-    } on Exception catch (ex) {
-      return left(ex.toString());
+    } on ApiException catch (ex) {
+      return left(ex.message ?? "Text Error We Got!");
     }
   }
-}
+}

lib/di/di.dart

@@ -1,4 +1,5 @@
 import 'package:currency_exchange_rate_app_flutter/data/datasource/crypto_currency_datasource.dart';
+import 'package:currency_exchange_rate_app_flutter/data/repository/crypto_currency_repository.dart';
 import 'package:dio/dio.dart';
 import 'package:get_it/get_it.dart';
 
@@ -7,4 +8,5 @@ var locator = GetIt.instance;
 Future<void> getItInit() async {
   locator.registerSingleton<Dio>(Dio(BaseOptions(baseUrl: "https://one-api.ir/")));
   locator.registerSingleton<ICryptoCurrencyDataSource>(CryptoCurrencyRemoteDatasource());
+  locator.registerSingleton<ICryptoCurrencyRepository>(CryptoCurrencyRepository());
 }

lib/main.dart

@@ -1,7 +1,6 @@
 import 'package:currency_exchange_rate_app_flutter/constants/app_colors.dart';
 import 'package:currency_exchange_rate_app_flutter/di/di.dart';
 import 'package:currency_exchange_rate_app_flutter/screens/home_screen.dart';
-import 'package:currency_exchange_rate_app_flutter/screens/splash_screen.dart';
 import 'package:flutter/material.dart';
 import 'package:google_fonts/google_fonts.dart';
 

lib/screens/splash_screen.dart

@@ -1,10 +1,19 @@
+import 'package:currency_exchange_rate_app_flutter/bloc/crypto/crypto_bloc.dart';
+import 'package:currency_exchange_rate_app_flutter/bloc/crypto/crypto_event.dart';
 import 'package:currency_exchange_rate_app_flutter/constants/app_colors.dart';
+import 'package:currency_exchange_rate_app_flutter/screens/home_screen.dart';
 import 'package:flutter/material.dart';
+import 'package:flutter_bloc/flutter_bloc.dart';
 import 'package:lottie/lottie.dart';
 
-class SplashScreen extends StatelessWidget {
+class SplashScreen extends StatefulWidget {
   const SplashScreen({super.key});
 
+  @override
+  State<SplashScreen> createState() => _SplashScreenState();
+}
+
+class _SplashScreenState extends State<SplashScreen> {
   @override
   Widget build(BuildContext context) {
     return Scaffold(

lib/util/api_exception.dart

@@ -0,0 +1,6 @@
+class ApiException implements Exception {
+  int? code;
+  String? message;
+
+  ApiException(this.code, this.message);
+}

pubspec.yaml

@@ -42,8 +42,8 @@ dependencies:
   dio: ^5.5.0+1
   get_it: ^7.7.0
   dartz: ^0.10.1
-  bloc: ^8.1.4
-  flutter_bloc: ^8.1.6
+  bloc: ^8.1.0
+  flutter_bloc: ^8.1.1
 
 
 dev_dependencies: