add shiny package for creating background/foreground services

subtrack.MAUI/MauiProgram.cs

@@ -7,6 +7,8 @@
 using subtrack.MAUI.Utilities;
 using System.Globalization;
 using Plugin.LocalNotification;
+using Shiny.Jobs;
+using Shiny;
 
 [assembly: InternalsVisibleTo("subtrack.Tests")]
 
@@ -20,25 +22,51 @@ public static MauiApp CreateMauiApp()
         var builder = MauiApp.CreateBuilder();
         builder
             .UseMauiApp<App>()
-            .ConfigureFonts(fonts => fonts.AddFont("OpenSans-Regular.ttf", "OpenSansRegular"));
+            .ConfigureFonts(fonts => fonts.AddFont("OpenSans-Regular.ttf", "OpenSansRegular"))
+            .ConfigureAndroid()
+            .UseLocalNotification();
+
+        builder.Services
+            .AddDebugServices()
+            .AddSubtrackServices()
+            .AddMauiBlazorWebView();
 
-        builder.UseLocalNotification();
-        builder.Services.AddMauiBlazorWebView();
-#if DEBUG
-        builder.Services.AddBlazorWebViewDeveloperTools();
-#endif
-        _ = builder.Services.AddSubtrackServices();
         using var sp = builder.Services.BuildServiceProvider();
-        var db = sp.GetRequiredService<SubtrackDbContext>();
+        SetupDb(sp);
+
+        sp.GetRequiredService<AutoPaymentHandler>()
+            .ExecuteAsync().Wait();
+
+        return builder.Build();
+    }
+
+    private static void SetupDb(ServiceProvider serviceProvider)
+    {
+        var db = serviceProvider.GetRequiredService<SubtrackDbContext>();
+
 #if DEBUG
         SeedDb(db);
 #else
             db.Database.Migrate();
-#endif      
-        sp.GetRequiredService<AutoPaymentHandler>()
-            .ExecuteAsync().Wait();
+#endif
+    }
 
-        return builder.Build();
+    private static IServiceCollection AddDebugServices(this IServiceCollection services)
+    {
+#if DEBUG
+        services.AddBlazorWebViewDeveloperTools();
+#endif
+        return services;
+    }
+
+    private static MauiAppBuilder ConfigureAndroid(this MauiAppBuilder builder)
+    {
+        var notifyDueSubscriptionsJob = new JobInfo(nameof(Services.Android.NotifyDueSubscriptionsJob), typeof(Services.Android.NotifyDueSubscriptionsJob), true);
+#if ANDROID
+        builder.UseShiny();
+        builder.Services.AddJob(notifyDueSubscriptionsJob);
+#endif
+        return builder;
     }
 
     private static void SetupCulture()

subtrack.MAUI/Platforms/Android/AndroidManifest.xml

@@ -9,4 +9,5 @@
 	<uses-permission android:name="android.permission.VIBRATE" />
 	<uses-permission android:name="android.permission.SCHEDULE_EXACT_ALARM" />
 	<uses-permission android:name="android.permission.POST_NOTIFICATIONS" />
+    <uses-permission android:name="android.permission.BATTERY_STATS" />
 </manifest>

subtrack.MAUI/Services/Android/NotifyDueSubscriptionsJob.cs

@@ -0,0 +1,57 @@
+using Plugin.LocalNotification;
+using Shiny.Jobs;
+
+namespace subtrack.MAUI.Services.Android;
+
+// the user might need to turn off battery optimizations for subtrack in settings->apps->subtrack->battery saver->no restrictions
+public class NotifyDueSubscriptionsJob : IJob
+{
+    private readonly IServiceScopeFactory _serviceScopeFactory;
+
+    public NotifyDueSubscriptionsJob(IServiceScopeFactory serviceScopeFactory)
+    {
+        _serviceScopeFactory = serviceScopeFactory;
+    }
+
+    private static async Task EnsureNotificationsAreEnabled()
+    {
+        var hasEnabledNotifications = await LocalNotificationCenter.Current.AreNotificationsEnabled();
+        if (!hasEnabledNotifications)
+        {
+            await LocalNotificationCenter.Current.RequestNotificationPermission();
+        }
+    }
+
+    private static void SendNotification(int notificationId, string title, string group)
+    {
+        var sampleNotification = new NotificationRequest()
+        {
+            NotificationId = notificationId,
+            Title = title,
+            CategoryType = NotificationCategoryType.Reminder,
+            Group = group,
+        };
+
+        LocalNotificationCenter.Current.Show(sampleNotification);
+    }
+
+    public async Task Run(JobInfo jobInfo, CancellationToken cancellationToken)
+    {
+        while (true)
+        {
+            if (cancellationToken.IsCancellationRequested)
+                break;
+
+            // jobs are singletons, use this to create a scope for fetching transient/scoped dependencies
+            using var scope = _serviceScopeFactory.CreateScope();
+
+            await EnsureNotificationsAreEnabled();
+
+            var notificationGroup = DateTime.Today.Day.ToString();
+            SendNotification(1, "Netflix is due in 2 days", notificationGroup);
+            SendNotification(2, "Missed payment for disney", notificationGroup);
+
+            await Task.Delay(TimeSpan.FromHours(12), cancellationToken);
+        }
+    }
+}

subtrack.MAUI/subtrack.MAUI.csproj

@@ -59,10 +59,23 @@
 		<PackageReference Include="CsvHelper" Version="30.0.1" />
 		<PackageReference Include="Humanizer.Core" Version="2.14.1" />
 		<PackageReference Include="Plugin.LocalNotification" Version="10.1.8" />
+		<PackageReference Include="Shiny.Jobs" Version="3.1.2" />
 	</ItemGroup>
 
 	<ItemGroup>
 		<ProjectReference Include="..\subtrack.DAL\subtrack.DAL.csproj" />
 	</ItemGroup>
 
+	<ItemGroup Condition="'$(TargetFramework)' == 'net7.0-android'">
+	  <PackageReference Include="Shiny.Hosting.Maui">
+	    <Version>3.1.2</Version>
+	  </PackageReference>
+	</ItemGroup>
+
+	<ItemGroup Condition="'$(TargetFramework)' == 'net7.0-windows10.0.19041.0'">
+	  <PackageReference Include="Shiny.Hosting.Maui">
+	    <Version>3.1.2</Version>
+	  </PackageReference>
+	</ItemGroup>
+
 </Project>