UPDATED API

lib/data/network/currency_api.dart

@@ -8,57 +8,52 @@ import '../model/currency.dart';
 
 part 'currency_api.g.dart';
 
-@RestApi(baseUrl: "https://free.currencyconverterapi.com/api/v3/")
+@RestApi(baseUrl: "https://exchange-rates.abstractapi.com/v1/")
 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});
+    dio.options.queryParameters.addAll({"api_key": api});
 
     return _CurrencyApi(dio);
   }
 
-  @GET("/convert?")
-  Future<HttpResponse<ResponseObject>> getConversion(@Query("q") String currency);
+  @GET("/live?")
+  Future<HttpResponse<ResponseObject>> getConversion(
+      @Query("base") String from, @Query("target") String to);
 }
 
 @JsonSerializable()
-class ResponseObject implements CurrencyMapper{
-  dynamic query;
-  Map<String, CurrencyObject>? results;
+class ResponseObject implements CurrencyMapper {
+  String base;
+  String last_updated;
+  Map<String, double>? exchange_rates;
 
-  ResponseObject({
-    this.query,
-    this.results
-  });
+  ResponseObject(this.base, this.last_updated, this.exchange_rates);
 
-  factory ResponseObject.fromJson(Map<String, dynamic> json) => _$ResponseObjectFromJson(json);
+  factory ResponseObject.fromJson(Map<String, dynamic> json) =>
+      _$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);
+    return Currency(base, exchange_rates?.keys.first, exchange_rates?.values.first);
   }
-  
 }
 
 @JsonSerializable()
-class CurrencyObject{
+class CurrencyObject {
   String? id;
   String? fr;
   String? to;
   double? val;
 
-  CurrencyObject({
-    this.id,
-    this.fr,
-    this.to,
-    this.val
-  });
+  CurrencyObject({this.id, this.fr, this.to, this.val});
 
-  factory CurrencyObject.fromJson(Map<String, dynamic> json) => _$CurrencyObjectFromJson(json);
+  factory CurrencyObject.fromJson(Map<String, dynamic> json) =>
+      _$CurrencyObjectFromJson(json);
   Map<String, dynamic> toJson() => _$CurrencyObjectToJson(this);
-}
+}

lib/data/repository/repository_impl.dart

@@ -33,10 +33,8 @@ class RepositoryImpl extends Repository with SafeApiCall {
     String from = fromCurrency.getCurrencyCode();
     String to = toCurrency.getCurrencyCode();
 
-    String currency = "${from}_$to";
-
     try {
-      ResponseObject responseObject = await getDataFromApiCall(_api.getConversion(currency));
+      ResponseObject responseObject = await getDataFromApiCall(_api.getConversion(from, to));
       return responseObject.convert();
     } on HttpException catch(error) {
       logger.e(error);

pubspec.lock

@@ -379,7 +379,7 @@ packages:
       name: material_color_utilities
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.2.0"
+    version: "0.1.5"
   meta:
     dependency: transitive
     description:
@@ -622,7 +622,7 @@ packages:
       name: source_span
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.9.1"
+    version: "1.9.0"
   stack_trace:
     dependency: transitive
     description:
@@ -685,7 +685,7 @@ packages:
       name: test_api
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.4.13"
+    version: "0.4.12"
   timing:
     dependency: transitive
     description:
@@ -734,7 +734,7 @@ packages:
       name: vector_math
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.1.3"
+    version: "2.1.2"
   watcher:
     dependency: transitive
     description: