Init core module

core/lib/data/constants/constant.dart

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+class Constant {
+  static const userId = '_id';
+  static const firstName = 'firstname';
+  static const lastName = 'lastname';
+  static const acceptHeaderDefault = 'application/json';
+  static const contentTypeHeaderDefault = 'application/json';
+}

core/lib/data/network/config/authorization_interceptors.dart

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+import 'dart:convert';
+
+import 'package:dio/dio.dart';
+
+class AuthorizationInterceptors extends InterceptorsWrapper {
+  String? _authorization;
+
+  void changeAuthorization(String? userName, String? password) {
+    _authorization = base64Encode(utf8.encode('$userName:$password'));
+  }
+
+  @override
+  void onRequest(RequestOptions options, RequestInterceptorHandler handler) {
+    if (_authorization != null) {
+      options.headers['Authorization'] = 'Basic $_authorization';
+    }
+    super.onRequest(options, handler);
+  }
+}

core/lib/data/network/config/dynamic_url_interceptors.dart

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+import 'package:dio/dio.dart';
+
+class DynamicUrlInterceptors extends InterceptorsWrapper {
+  String? _baseUrl;
+
+  void changeBaseUrl(String? url) {
+    _baseUrl = url;
+  }
+
+  @override
+  void onRequest(RequestOptions options, RequestInterceptorHandler handler) {
+    if (_baseUrl != null) {
+      options.baseUrl = _baseUrl!;
+    }
+    super.onRequest(options, handler);
+  }
+}

core/lib/data/network/config/endpoint.dart

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+import 'package:core/data/network/config/service_path.dart';
+
+class Endpoint {
+  static final ServicePath authentication = ServicePath('/api/login');
+}

core/lib/data/network/config/service_path.dart

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+class ServicePath {
+  final String path;
+
+  ServicePath(this.path);
+}
+
+extension ServicePathExtension on ServicePath {
+  String generateEndpointPath() {
+    return '$path';
+  }
+
+  String generateAuthenticationUrl(Uri? baseUrl) {
+    if (baseUrl == null) {
+      return generateEndpointPath();
+    } else {
+      return baseUrl.origin + generateEndpointPath();
+    }
+  }
+}

core/lib/data/network/dio_client.dart

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+import 'package:dio/dio.dart';
+
+class DioClient {
+  final Dio _dio;
+
+  DioClient(this._dio);
+
+  Map<String, dynamic> getHeaders() => Map.from(_dio.options.headers);
+
+  Future<dynamic> get(
+    String path, {
+    Map<String, dynamic>? queryParameters,
+    Options? options,
+    CancelToken? cancelToken,
+    ProgressCallback? onReceiveProgress,
+  }) async {
+    return await _dio.get(
+        path,
+        queryParameters: queryParameters,
+        options: options,
+        cancelToken: cancelToken,
+        onReceiveProgress: onReceiveProgress)
+      .then((value) => value.data)
+      .catchError((error) => throw error);
+  }
+
+  Future<dynamic> post(
+    String path, {
+    data,
+    Map<String, dynamic>? queryParameters,
+    Options? options,
+    CancelToken? cancelToken,
+    ProgressCallback? onSendProgress,
+    ProgressCallback? onReceiveProgress,
+  }) async {
+    return await _dio.post(path,
+        data: data,
+        queryParameters: queryParameters,
+        options: options,
+        cancelToken: cancelToken,
+        onSendProgress: onSendProgress,
+        onReceiveProgress: onReceiveProgress)
+      .then((value) => value.data)
+      .catchError((error) => throw error);
+  }
+
+  Future<dynamic> delete(
+    String path, {
+    data,
+    Map<String, dynamic>? queryParameters,
+    Options? options,
+    CancelToken? cancelToken,
+  }) async {
+    return await _dio.delete(
+        path,
+        data: data,
+        queryParameters: queryParameters,
+        options: options,
+        cancelToken: cancelToken)
+      .then((value) => value.data)
+      .catchError((error) => throw(error));
+  }
+
+  Future<dynamic> put(
+      String path, {
+        data,
+        Map<String, dynamic>? queryParameters,
+        Options? options,
+        CancelToken? cancelToken,
+        ProgressCallback? onSendProgress,
+        ProgressCallback? onReceiveProgress
+  }) async {
+    return await _dio.put(
+        path,
+        data: data,
+        queryParameters: queryParameters,
+        options: options,
+        cancelToken: cancelToken,
+        onSendProgress: onSendProgress,
+        onReceiveProgress: onReceiveProgress)
+      .then((value) => value.data)
+      .catchError((error) => throw(error));
+  }
+}