add Method: detect

lib/components/google_translate.dart

@@ -10,8 +10,10 @@ class GoogleTranslate {
   // apiKey: google cloud console api key
   @protected
   final String apiKey;
+
   // sourceLanguage: language of you text to translate
   String? sourceLanguage;
+
   // targetLanguage: language of your translated text
   String targetLanguage;
 
@@ -57,4 +59,26 @@ class GoogleTranslate {
       apiKey: apiKey,
     );
   }
+
+  Future<Map<String, dynamic>> translateAndDetect(
+    String text, {
+    String? sourceLanguage,
+    String? targetLanguage,
+  }) {
+    final source = sourceLanguage ?? this.sourceLanguage;
+    final target = targetLanguage ?? this.targetLanguage;
+    return _reopsitory.translateAndDetect(
+      text: text,
+      source: source,
+      target: target,
+      apiKey: apiKey,
+    );
+  }
+
+  Future<String> detect(String text) {
+    return _reopsitory.detect(
+      text: text,
+      apiKey: apiKey,
+    );
+  }
 }

lib/extensions/string_extension.dart

@@ -12,4 +12,25 @@ extension Translate on String {
       targetLanguage: targetLanguage,
     );
   }
+
+  /// JSON representation
+  /// {
+  ///   "detectedSourceLanguage": string,
+  ///   "model": string,
+  ///   "translatedText": string,
+  /// }
+  Future<Map<String, dynamic>> translateAndDetect({
+    String? sourceLanguage,
+    String? targetLanguage,
+  }) {
+    return GoogleTranslate().translateAndDetect(
+      this,
+      sourceLanguage: sourceLanguage,
+      targetLanguage: targetLanguage,
+    );
+  }
+
+  Future<String> detect() {
+    return GoogleTranslate().detect(this);
+  }
 }

lib/repositories/google_translate_repository.dart

@@ -65,4 +65,65 @@ class GoogleTranslateReopsitory {
     }
     return text;
   }
+
+  Future<Map<String, dynamic>> translateAndDetect({
+    required String text,
+    String? source,
+    required String target,
+    required String apiKey,
+  }) async {
+    await completer.future;
+
+    try {
+      Response response = await _dio.get(
+        "language/translate/v2",
+        queryParameters: {
+          "key": apiKey,
+          "q": text,
+          "source": source,
+          "target": target,
+          "format": "text",
+        },
+      );
+
+      if ((response.statusCode == 200 || response.statusCode == 304) &&
+          response.data?["data"]?["translations"] != null &&
+          response.data["data"]?["translations"]?.isNotEmpty) {
+        return response.data["data"]?["translations"].first;
+      }
+    } catch (e) {
+      debugPrint(e.toString());
+    }
+    return {
+      "detectedSourceLanguage": "",
+      "model": "",
+      "translatedText": "",
+    };
+  }
+
+  Future<String> detect({
+    required String text,
+    required String apiKey,
+  }) async {
+    await completer.future;
+
+    try {
+      Response response = await _dio.get(
+        "language/translate/v2/detect",
+        queryParameters: {
+          "key": apiKey,
+          "q": text,
+        },
+      );
+
+      if ((response.statusCode == 200 || response.statusCode == 304) &&
+          response.data["data"]?["detections"] != null &&
+          response.data["data"]?["detections"]?.isNotEmpty) {
+        text = response.data["data"]?["detections"].first.first["language"];
+      }
+    } catch (e) {
+      debugPrint(e.toString());
+    }
+    return text;
+  }
 }