social-media/backend/src/Socialize.Api/Modules/CalendarIntegrations/Services/CalendarImportBackgroundService.cs

namespace Socialize.Api.Modules.CalendarIntegrations.Services;

public sealed class CalendarImportBackgroundService(
    IServiceScopeFactory scopeFactory,
    ILogger<CalendarImportBackgroundService> logger)
    : BackgroundService
{
    protected override async Task ExecuteAsync(CancellationToken stoppingToken)
    {
        using PeriodicTimer timer = new(TimeSpan.FromHours(6));
        while (!stoppingToken.IsCancellationRequested)
        {
            await RefreshDueSourcesAsync(stoppingToken);
            await timer.WaitForNextTickAsync(stoppingToken);
        }
    }

    private async Task RefreshDueSourcesAsync(CancellationToken stoppingToken)
    {
        try
        {
            using IServiceScope scope = scopeFactory.CreateScope();
            CalendarImportSyncService syncService = scope.ServiceProvider.GetRequiredService<CalendarImportSyncService>();
            await syncService.RefreshDueSourcesAsync(stoppingToken);
        }
        catch (OperationCanceledException) when (stoppingToken.IsCancellationRequested)
        {
        }
        catch (Exception ex)
        {
            logger.LogError(ex, "Calendar import background sync failed.");
        }
    }
}