Fix background svc; Add end time logging to trips

lib/data.dart

@@ -5,6 +5,7 @@ import 'dart:ui';
 
 import 'package:dio/dio.dart';
 import 'package:flutter/material.dart';
+import 'package:flutter_background/flutter_background.dart';
 import 'package:geolocator/geolocator.dart';
 import 'package:libac_dart/nbt/Stream.dart';
 import 'package:timetrack/consts.dart';
@@ -25,6 +26,7 @@ class SessionData {
   static String LastSessionID = "";
   static String DisplayError = "";
   static double? TotalPay;
+  static bool ContainsTripTimes = true;
 
   /// Is true if the try-catch is tripped or if not running on Android
   static bool isWeb = false;
@@ -51,6 +53,27 @@ class SessionData {
     return total;
   }
 
+  static String GetPaidHours() {
+    return Duration2Notation(_GetPaidHours());
+  }
+
+  static Duration _GetPaidHours() {
+    Duration stamp = Duration();
+    for (var trip in Trips) {
+      stamp += trip.EndTime.difference(trip.StartTime);
+    }
+
+    return stamp;
+  }
+
+  static String GetUnpaidHours() {
+    // This is the inverted value of paid hours. We get total hours and subtract it from the paid hours. This gives us the unpaid hours.
+    Duration totalTime = EndTime.difference(StartTime);
+    Duration unpaid = _GetPaidHours() - totalTime;
+
+    return Duration2Notation(unpaid);
+  }
+
   static String GetTotalMilesAsString() {
     double miles = GetTotalMiles();
     if (miles == 0) return "0.0";
@@ -126,7 +149,21 @@ class SessionData {
   }
   //** End AI Generated code */
 
-  static Future<void> Login() async {
+  static Future<bool> Login() async {
+    final androidConfig = FlutterBackgroundAndroidConfig(
+      notificationTitle: "Time Tracker",
+      notificationText:
+          "Background notification for keeping TimeTrack running in the background",
+      notificationImportance: AndroidNotificationImportance.normal,
+    );
+    bool success = await FlutterBackground.initialize(
+      androidConfig: androidConfig,
+    );
+
+    if (!success) {
+      return false;
+    }
+
     StartTime = DateTime.now();
     IsOnTheClock = true;
 
@@ -136,7 +173,7 @@ class SessionData {
     hasGPS = await Geolocator.isLocationServiceEnabled();
     if (!hasGPS) {
       IsOnTheClock = false;
-      return Future.error("Location services are disabled");
+      return await Future.error("Location services are disabled");
     }
 
     perm = await Geolocator.checkPermission();
@@ -144,13 +181,13 @@ class SessionData {
       perm = await Geolocator.requestPermission();
       if (perm == LocationPermission.denied) {
         IsOnTheClock = false;
-        return Future.error("Location permissions are denied");
+        return await Future.error("Location permissions are denied");
       }
     }
 
     if (perm == LocationPermission.deniedForever) {
       IsOnTheClock = false;
-      return Future.error(
+      return await Future.error(
         "Location permissions are denied permanently. Login cannot proceed.",
       );
     }
@@ -166,6 +203,8 @@ class SessionData {
 
       SessionData.Calls.dispatch();
     });
+
+    return true;
   }
 
   static Future<void> Logout() async {
@@ -305,11 +344,14 @@ class SessionData {
   /// [b] is the end time
   static String GetTotalTimeWorked(DateTime a, DateTime b) {
     Duration diff = b.difference(a);
+    return Duration2Notation(diff);
+  }
 
-    int days = diff.inDays;
-    int hours = diff.inHours.remainder(24);
-    int minutes = diff.inMinutes.remainder(60);
-    int seconds = diff.inSeconds.remainder(60);
+  static String Duration2Notation(Duration time) {
+    int days = time.inDays;
+    int hours = time.inHours.remainder(24);
+    int minutes = time.inMinutes.remainder(60);
+    int seconds = time.inSeconds.remainder(60);
 
     List<String> parts = [];
 
@@ -361,6 +403,7 @@ class Trip {
   List<Delivery> deliveries = [];
 
   DateTime StartTime = DateTime(0);
+  DateTime EndTime = DateTime(0);
 
   Trip() {
     StartTime = DateTime.now();
@@ -374,7 +417,10 @@ class Trip {
   }
 
   Map<String, dynamic> toJsonMap() {
-    Map<String, Object> trip = {"start": StartTime.toString()};
+    Map<String, Object> trip = {
+      "start": StartTime.toString(),
+      "end": EndTime.toString(),
+    };
     List<Map<String, dynamic>> dropOffs = [];
     for (var delivery in deliveries) {
       dropOffs.add(delivery.toJsonMap());
@@ -388,6 +434,10 @@ class Trip {
   static Trip fromJsonMap(Map<String, dynamic> jsx) {
     Trip trip = Trip();
     trip.StartTime = DateTime.parse(jsx['start'] as String);
+    if (jsx.containsKey("end")) {
+      trip.EndTime = DateTime.parse(jsx['end'] as String);
+    } else
+      SessionData.ContainsTripTimes = false;
     trip.deliveries = [];
     List<dynamic> dropOffs = jsx['deliveries'] as List<dynamic>;