using System.Threading;
using System.Threading.Tasks;
using LCU.API.Collections.RepoApi.Configuration;
using LCU.API.Collections.RepoApi.Services;
using LCU.Shared.Realtime.QueueLib.Models;
using LCU.Shared.Realtime.QueueLib.Queue;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;
using Serilog;

namespace LCU.API.Collections.RepoApi.HostedServices
{
    public class HostedAutoImsTaskConsumer : BackgroundService, IQueueItemProcessor
    {
        private readonly IServiceScopeFactory _scopeFactory;
        private readonly IQueueConnectionConfig _configuration;
        private readonly IQueueConsumerConfig _consumerConfig;

        public HostedAutoImsTaskConsumer(IQueueConnectionConfig configuration, RepoApiConfiguration repoApiConfiguration, IServiceScopeFactory scopeFactory)
        {
            _configuration = configuration;
            _scopeFactory = scopeFactory;
            _consumerConfig = repoApiConfiguration.QueueConsumerConfigs["AutoImsTask"];
        }

        protected override async Task ExecuteAsync(CancellationToken cancellationToken)
        {
            Log.Information("[QueueLib] Hosted Queue Producer is starting.");

            var proxyQueue = new QueueItemConsumer(_configuration, _consumerConfig, this);

            await proxyQueue.ProcessItems(cancellationToken, true, 0);

            Log.Information("[QueueLib] Hosted Queue Producer is stopping.");
        }

        public void HandleItem(QueueItem item)
        {
            using (var scope = _scopeFactory.CreateScope())
            {
                var processor = scope.ServiceProvider.GetService<AutoImsService>();
                var files = processor.Download();
                processor.ProcessDownloadedFiles(files);
            }
        }
    }
}