fix(mobile): flowmotion_api sdk serializer dropping timezone info

Author: mrzzy

lib/screens/congestionRating.dart

@@ -1,4 +1,5 @@
 import 'package:flowmotion/models/rating_point.dart';
+import 'package:flowmotion/utilities/flowmotion_api_sgt.dart';
 import 'package:flowmotion/widgets/congestionPointView.dart';
 import 'package:flowmotion_api/flowmotion_api.dart';
 import 'package:flutter/material.dart';
@@ -11,7 +12,6 @@ import '../utilities/firebase_calls.dart';
 import '../widgets/navigationBar.dart';
 
 final FirebaseCalls firebaseCalls = FirebaseCalls();
-final api = FlowmotionApi().getCongestionApi();
 
 class CongestionRatingScreen extends StatefulWidget {
   final String savedPlaceLabel;
@@ -74,7 +74,7 @@ class _CongestionRatingScreenState extends State<CongestionRatingScreen> {
   }
 
   Future<void> fetchGraphRatings(String cameraId, String groupby, DateTime begin, DateTime end) async {
-    final api = FlowmotionApi().getCongestionApi();
+    final api = FlowmotionApi().getCongestionApiSgt();
     print("Fetching for camera ID: $cameraId");
     print("End time: $end");
     print("Start time: $begin");
@@ -112,7 +112,7 @@ class _CongestionRatingScreenState extends State<CongestionRatingScreen> {
   }
 
   Future<void> fetchAllRatings() async {
-    final api = FlowmotionApi().getCongestionApi();
+    final api = FlowmotionApi().getCongestionApiSgt();
     try {
       final response = await api.congestionsGet();
       print(response.data!.length);

lib/screens/fullMapScreen.dart

@@ -1,5 +1,7 @@
 import 'dart:async'; // Import Timer
 import 'package:flowmotion/core/widget_keys.dart';
+import 'package:flowmotion/screens/congestionRating.dart';
+import 'package:flowmotion/utilities/flowmotion_api_sgt.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_map/flutter_map.dart';
 import 'package:geolocator/geolocator.dart';
@@ -51,7 +53,7 @@ class _FullMapScreenState extends State<FullMapScreen> {
   }
 
   Future<void> _fetchCongestionRatings() async {
-    final api = FlowmotionApi().getCongestionApi();
+    final api = FlowmotionApi().getCongestionApiSgt();
     try {
       final response = await api.congestionsGet();
 

lib/screens/homeScreen.dart

@@ -2,6 +2,7 @@ import 'package:cloud_firestore/cloud_firestore.dart';
 import 'package:firebase_auth/firebase_auth.dart';
 import 'package:firebase_core/firebase_core.dart';
 import 'package:flowmotion/screens/fullMapScreen.dart';
+import 'package:flowmotion/utilities/flowmotion_api_sgt.dart';
 import 'package:flowmotion_api/flowmotion_api.dart';
 import 'package:flutter/material.dart';
 import 'package:geolocator/geolocator.dart';
@@ -279,7 +280,7 @@ class _HomeScreenState extends State<HomeScreen> {
       _isFetchingData = true; // Start fetching data
     });
 
-    final api = FlowmotionApi().getCongestionApi();
+    final api = FlowmotionApi().getCongestionApiSgt();
     try {
       final response = await api.congestionsGet();
 
@@ -676,4 +677,4 @@ class _HomeScreenState extends State<HomeScreen> {
       ),
     );
   }
-}
+}

lib/widgets/congestionPointView.dart

@@ -5,6 +5,7 @@ import 'package:flowmotion_api/flowmotion_api.dart';
 import 'package:intl/intl.dart';
 
 import 'package:flutter/material.dart';
+import '../utilities/flowmotion_api_sgt.dart';
 
 /// Visualize Congestion Point identified by the given cameraId
 class CongestionPointView extends StatelessWidget {
@@ -13,7 +14,7 @@ class CongestionPointView extends StatelessWidget {
 
   Future<List<RatingPoint>> fetchGraphRatings(
       String cameraId, String groupby, DateTime begin, DateTime end) async {
-    final api = FlowmotionApi().getCongestionApi();
+    final api = FlowmotionApi().getCongestionApiSgt();
     print("Fetching for camera ID: $cameraId");
     print("End time: $end");
     print("Start time: $begin");
@@ -178,19 +179,14 @@ class CongestionPointView extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    DateTime formatToSingaporeTime(DateTime date) {
-      return date.toUtc().add(Duration(hours: 8));
-    }
-
     return Container(
       child: Column(children: [
         FutureBuilder<List<RatingPoint>>(
           future: fetchGraphRatings(
               cameraId,
               'hour', // groupby
-              formatToSingaporeTime(
-                  DateTime.now().subtract(Duration(hours: 10))),
-              formatToSingaporeTime(DateTime.now())),
+              DateTime.now().subtract(Duration(hours: 10)),
+              DateTime.now()),
           builder: (context, snapshot) {
             if (snapshot.connectionState == ConnectionState.waiting) {
               return CircularProgressIndicator();
@@ -218,9 +214,8 @@ class CongestionPointView extends StatelessWidget {
           future: fetchGraphRatings(
               cameraId,
               'day', // groupby
-              formatToSingaporeTime(
-                  DateTime.now().subtract(Duration(days: 5))), // start time
-              formatToSingaporeTime(DateTime.now()) // end time
+              DateTime.now().subtract(Duration(days: 5)), // start time
+              DateTime.now() // end time
               ),
           builder: (context, snapshot) {
             if (snapshot.connectionState == ConnectionState.waiting) {