feat: add logic implementation controlling relay via API

agrilink_vocpro/lib/data/model/switch_relay_response.dart

@@ -0,0 +1,18 @@
+class SwitchRelayResponse {
+  bool? success;
+  String? message;
+
+  SwitchRelayResponse({this.success, this.message});
+
+  SwitchRelayResponse.fromJson(Map<String, dynamic> json) {
+    success = json['success'];
+    message = json['message'];
+  }
+
+  Map<String, dynamic> toJson() {
+    final Map<String, dynamic> data = <String, dynamic>{};
+    data['success'] = success;
+    data['message'] = message;
+    return data;
+  }
+}

agrilink_vocpro/lib/domain/service/app_service.dart

@@ -9,8 +9,8 @@ import 'package:agrilink_vocpro/data/model/npk1_graphic_response.dart';
 import 'package:agrilink_vocpro/data/model/npk2_graphic_response.dart';
 import 'package:agrilink_vocpro/data/model/relay_response.dart';
 import 'package:agrilink_vocpro/data/model/latest_data_response.dart';
+import 'package:agrilink_vocpro/data/model/switch_relay_response.dart';
 import 'package:dio/dio.dart';
-import 'package:flutter/foundation.dart';
 import 'package:jwt_decoder/jwt_decoder.dart';
 import 'package:shared_preferences/shared_preferences.dart';
 
@@ -70,7 +70,7 @@ class AppService {
     try {
       await Future.delayed(const Duration(seconds: 3));
       final result = await _dioWithoutInterceptor.get(
-        'get-relay',
+        '/api/get-relay',
         options: Options(
           headers: {'Authorization': auth},
         ),
@@ -82,10 +82,39 @@ class AppService {
         throw Exception('Failed to load data');
       }
     } on DioException catch (e) {
-      if (kDebugMode) {
-        print(e);
+      final errorMessage = e.response?.data['message'];
+      throw (errorMessage);
+    }
+  }
+
+  // switch relay
+
+  Future<SwitchRelayResponse> switchRelay(
+      {required int relayNumber, required int state}) async {
+    final SharedPreferences pref = await SharedPreferences.getInstance();
+    final String auth = 'Bearer ${pref.getString('token')}';
+
+    try {
+      final response = await _dioWithoutInterceptor.post(
+        '/api/set-relay',
+        data: {
+          'id': relayNumber,
+          'state': state,
+        },
+        options: Options(
+          headers: {'Authorization': auth},
+        ),
+      );
+
+      if (response.statusCode == 200 || response.statusCode == 201) {
+        final data = SwitchRelayResponse.fromJson(response.data);
+        return data;
+      } else {
+        throw Exception('Failed to load data');
       }
-      rethrow;
+    } on DioException catch (e) {
+      final errorMessage = e.response?.data['message'];
+      throw (errorMessage);
     }
   }
 

agrilink_vocpro/lib/features/auth/view/login_screen.dart

@@ -83,22 +83,4 @@ class LoginScreen extends StatelessWidget {
       ),
     );
   }
-
-  void _showErrorDialog(BuildContext context, String errorMessage) {
-    showDialog(
-      context: context,
-      builder: (context) => AlertDialog(
-        title: const Text('Error'),
-        content: Text(errorMessage),
-        actions: [
-          TextButton(
-            onPressed: () {
-              Navigator.pop(context);
-            },
-            child: const Text('OK'),
-          ),
-        ],
-      ),
-    );
-  }
 }

agrilink_vocpro/lib/features/control/provider/control_provider.dart

@@ -77,7 +77,37 @@ class ControlProvider extends ChangeNotifier {
       if (kDebugMode) {
         print(e);
       }
-      rethrow;
+    }
+  }
+
+  Future<bool> switchRelay(int relayNumber, bool state) async {
+    relayState = ResultState.loading;
+    notifyListeners();
+
+    final int stateConverted;
+    if (state == true) {
+      stateConverted = 1;
+    } else {
+      stateConverted = 0;
+    }
+    try {
+      final result = await _appService.switchRelay(
+          relayNumber: relayNumber, state: stateConverted);
+      if (result.success == true) {
+        relayState = ResultState.hasData;
+        notifyListeners();
+        print(result.message);
+        return true;
+      } else {
+        return false;
+      }
+    } catch (e) {
+      if (kDebugMode) {
+        print(e);
+      }
+      relayState = ResultState.error;
+      notifyListeners();
+      return false;
     }
   }
 

agrilink_vocpro/lib/features/control/view/control_screen.dart

@@ -75,10 +75,13 @@ class ControlScreen extends StatelessWidget {
                     title: 'Katup Air',
                     subtitle: 'Relay 1',
                     isActive: provider.control_1,
-                    onTap: () {
-                      provider.control_1 != true
-                          ? provider.switchControl1(true)
-                          : provider.switchControl1(false);
+                    onTap: () async {
+                      final result = provider.control_1 != true
+                          ? await provider.switchRelay(1, true)
+                          : await provider.switchRelay(1, false);
+                      result == true
+                          ? provider.switchControl1(!provider.control_1)
+                          : provider.switchControl1(provider.control_1);
                     },
                   ),
                   ControlButtonWidget(