initial commit (migrated)

lib/core/network/network.dart

@@ -0,0 +1,51 @@
+import 'dart:convert';
+import 'dart:io';
+import 'package:flutter/foundation.dart';
+import 'package:http/http.dart' as http;
+import 'package:kuwot/core/error/exception.dart';
+
+/// Network interface
+abstract class Network {
+  /// Get data from uri
+  Future<String> get(Uri uri, {Map<String, String>? headers});
+
+  /// Post data to uri
+  Future<String> post(Uri uri, {Map<String, String>? headers, Object? body});
+}
+
+/// Network implementation
+class NetworkImpl implements Network {
+  final _client = http.Client();
+
+  @override
+  Future<String> get(Uri uri, {Map<String, String>? headers}) async {
+    if (kDebugMode) {
+      print('GET: $uri, headers: $headers');
+    }
+    final response = await _client.get(uri, headers: headers);
+    final stringResponse = utf8.decode(response.bodyBytes);
+
+    if (response.statusCode == HttpStatus.unauthorized) {
+      throw UnauthorizedException(stringResponse);
+    }
+
+    if (response.statusCode != HttpStatus.ok) {
+      throw ServerException(stringResponse);
+    }
+
+    return stringResponse;
+  }
+
+  @override
+  Future<String> post(
+    Uri uri, {
+    Map<String, String>? headers,
+    Object? body,
+  }) async {
+    if (kDebugMode) {
+      print('POST: $uri, headers: $headers, body: $body');
+    }
+    final response = await _client.post(uri, headers: headers, body: body);
+    return utf8.decode(response.bodyBytes);
+  }
+}