Project lint checked and step added to config.yml

lib/data/network/currency_api.dart

@@ -0,0 +1,64 @@
+// ignore: depend_on_referenced_packages
+import 'package:dio/dio.dart';
+import 'package:easy_cc_flutter/data/network/app_dio.dart';
+import 'package:json_annotation/json_annotation.dart';
+import 'package:retrofit/retrofit.dart';
+
+import '../model/currency.dart';
+
+part 'currency_api.g.dart';
+
+@RestApi(baseUrl: "https://free.currencyconverterapi.com/api/v3/")
+abstract class CurrencyApi {
+  factory CurrencyApi(Dio dio, {String baseUrl}) = _CurrencyApi;
+  static const api = String.fromEnvironment('currencyApiKey');
+  
+  static CurrencyApi create() {
+    final dio = AppDio.createDio();
+    dio.options.queryParameters.addAll({"apiKey": api});
+
+    return _CurrencyApi(dio);
+  }
+
+  @GET("/convert?")
+  Future<HttpResponse<ResponseObject>> getConversion(@Query("q") String currency);
+}
+
+@JsonSerializable()
+class ResponseObject implements CurrencyMapper{
+  dynamic query;
+  Map<String, CurrencyObject>? results;
+
+  ResponseObject({
+    this.query,
+    this.results
+  });
+
+  factory ResponseObject.fromJson(Map<String, dynamic> json) => _$ResponseObjectFromJson(json);
+  Map<String, dynamic> toJson() => _$ResponseObjectToJson(this);
+
+  @override
+  Currency convert() {
+    CurrencyObject? cur = results?.entries.elementAt(0).value;
+    return Currency(cur?.fr, cur?.to, cur?.val);
+  }
+  
+}
+
+@JsonSerializable()
+class CurrencyObject{
+  String? id;
+  String? fr;
+  String? to;
+  double? val;
+
+  CurrencyObject({
+    this.id,
+    this.fr,
+    this.to,
+    this.val
+  });
+
+  factory CurrencyObject.fromJson(Map<String, dynamic> json) => _$CurrencyObjectFromJson(json);
+  Map<String, dynamic> toJson() => _$CurrencyObjectToJson(this);
+}