using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;
using Microsoft.Extensions.Logging;
using UniVerse.Application.Interfaces;

namespace UniVerse.Api.BackgroundServices;

public class LlmProcessingBackgroundService : BackgroundService
{
    private readonly IServiceProvider _services;
    private readonly ILogger<LlmProcessingBackgroundService> _logger;

    public LlmProcessingBackgroundService(IServiceProvider services, ILogger<LlmProcessingBackgroundService> logger)
    {
        _services = services; _logger = logger;
    }

    protected override async Task ExecuteAsync(CancellationToken stoppingToken)
    {
        _logger.LogInformation("LLM Processing Background Service started");
        while (!stoppingToken.IsCancellationRequested)
        {
            try
            {
                using var scope = _services.CreateScope();
                var llmService = scope.ServiceProvider.GetRequiredService<ILlmAnalysisService>();
                await llmService.ProcessPendingReviewsAsync();
            }
            catch (Exception ex)
            {
                _logger.LogError(ex, "Error in LLM processing background service");
            }
            await Task.Delay(TimeSpan.FromMinutes(2), stoppingToken);
        }
    }
}