Worker | BackgroundService questions on Android (and other Platforms)

[codeaphex]

Hello, I need some help to correctly implement a daily background worker on android and other platforms in the future.
Currently I can run the worker as expected with the code below.
My questions are mostly around the implementation of the Worker:

1. What is the correct way to inject parameters into the actual Worker, like the github username and token or executionTime to schedule the task for the next day?
2. Is it the suggested way to just instantiate the WorkScheduler and my GitHubGraphQLService or can I inject it via dependency service? If possible how does this actually work when the task is running without the actual app?
3. How to correctly call async methods inside DoWork() ?
4. Bonus question: If someone already got an implementation to delete an existing OneTimeWorkRequest via its tag I would happily take a look at it.

Interface

public interface IWorkScheduler
{
    void ScheduleDailyWorker(string workerTag, int executionHour, int executionMinute);
}

Android Implementation

public class WorkScheduler : IWorkScheduler
{
    public void ScheduleDailyWorker(string workerTag, int executionHour, int executionMinute)
    {
        var builder = new Constraints.Builder();
        builder.SetRequiredNetworkType(NetworkType.Connected);
        var workConstraints = builder.Build();

        var culture = CultureInfo.CurrentCulture;
        Debug.WriteLine($"Current culture: {culture.Name}");
        var currentDateTime = DateTime.Now;

        var dueDateTime = new DateTime(
            currentDateTime.Year,
            currentDateTime.Month,
            currentDateTime.Day,
            executionHour,
            executionMinute,
            0);

        if (currentDateTime.Hour > executionHour || 
            (currentDateTime.Hour == executionHour && currentDateTime.Minute >= executionMinute))
        {
            dueDateTime = dueDateTime.AddDays(1);
        }
        Debug.WriteLine($"DueDate: {dueDateTime}");
        var delay = dueDateTime - DateTime.Now;
        Debug.WriteLine($"Delay: {delay.TotalSeconds}");
        var dailyWorkRequest = OneTimeWorkRequest.Builder.From<DailyWorker>().
            SetConstraints(workConstraints).
            SetInitialDelay(Convert.ToInt64(delay.TotalSeconds), TimeUnit.Seconds)
            .AddTag("DailyWorker")
            .Build();
        
        WorkManager.GetInstance(AndroidApp.Context)
            .EnqueueUniqueWork(workerTag, ExistingWorkPolicy.Replace, (OneTimeWorkRequest)dailyWorkRequest);
    }
}

Register and call in MauiProgram.cs

builder.Services.AddTransient<IWorkScheduler, WorkScheduler>();
...
MauiApp = builder.Build();
...
var workScheduler = MauiApp.Services.GetRequiredService<IWorkScheduler>();
workScheduler.ScheduleDailyWorker("DailyWorker", 22, 53);

Actual Worker

public class DailyWorker : Worker
{
    public DailyWorker(Context context, WorkerParameters workerParameters) : base(context, workerParameters)
    {
    }

    public override Result DoWork()
    {
        Debug.WriteLine($"Before recurring task");
        Task.Run(AddRecurringTask); 
        Debug.WriteLine($"After recurring task");
        var workScheduler = new WorkScheduler();
        workScheduler.ScheduleDailyWorker("recurringGroomingTask", 22, 55);
        return Result.InvokeSuccess();
    }

    private async Task AddRecurringTask()
    {
        Debug.WriteLine($"Before adding _githubService");

        var githubService = new GitHubGraphQLService("username", "token");
        Debug.WriteLine($"After adding _githubService {githubService}");
        var result = await githubService.AddProjectV2DraftIssue(
            "7",
            "Draft Title",
            "Draft Body"
        );
    }
}

Reference posts for the implementation:
Daily Worker: https://medium.com/androiddevelopers/workmanager-periodicity-ff35185ff006
Maui Android Support WorkManager: #4065
+ some Android Docs