using System.CommandLine;

using GSS2.Core;
using GSS2.Core.Hardware;
using GSS2.Core.Logging;

using Microsoft.Extensions.Logging.Console;

using OpenCvSharp;

using ConsoleFormatter = GSS2.Core.Logging.ConsoleFormatter;

namespace GSS2.Test;

public partial class Program
{
    private class CaptureWorker : BackgroundService
    {
        private readonly ILogger<CaptureWorker> _logger;
        private readonly IHostApplicationLifetime _applicationLifetime;
        private readonly CameraService _cameraService;
        private readonly IlluminatorService _illuminatorService;
        private readonly FileInfo _outputFile;
        private readonly double _intensityWhite;
        private readonly double _intensityUv365nm;
        private readonly double _intensityUv254nm;

        public CaptureWorker(ILogger<CaptureWorker> logger, IHostApplicationLifetime applicationLifetime, CameraService cameraService, IlluminatorService illuminatorService, FileInfo outputFile, double intensityWhite, double intensityUv365nm, double intensityUv254nm)
        {
            _applicationLifetime = applicationLifetime;
            _logger = logger;
            _cameraService = cameraService;
            _illuminatorService = illuminatorService;
            _outputFile = outputFile;
            _intensityWhite = intensityWhite;
            _intensityUv365nm = intensityUv365nm;
            _intensityUv254nm = intensityUv254nm;

            _logger.LogInformation("Initialized");
            _logger.LogInformation("Output File: {}", _outputFile);
            _logger.LogInformation("Intensity White: {}", _intensityWhite);
            _logger.LogInformation("Intensity UV 365 nm: {}", _intensityUv365nm);
            _logger.LogInformation("Intensity UV 254 nm: {}", _intensityUv254nm);
        }

        protected override async Task ExecuteAsync(CancellationToken stoppingToken)
        {
            _logger.LogInformation("Running camera fine tuning");
            _illuminatorService.SetIntensity(_intensityWhite, _intensityUv365nm, _intensityUv254nm);
            _illuminatorService.TurnOn();

            Mat? image;
            try
            {
                image = await _cameraService.CaptureImage(stoppingToken, 5);

                if (image is null)
                {
                    _logger.LogCritical("Cannot get image");
                    _applicationLifetime.StopApplication();
                    return;
                }
            }
            catch (Exception ex)
            {
                _logger.LogCritical(ex, "Exception occurred while image capturing");
                _applicationLifetime.StopApplication();
                return;
            }
            finally
            {
                _illuminatorService.TurnOff();
            }

            try
            {
                image.ImWrite(_outputFile.FullName);
                _logger.LogInformation("Image saved: {}", _outputFile.FullName);
            }
            catch (Exception ex)
            {
                _logger.LogCritical(ex, "Exception occurred while image saving");
            }

            _applicationLifetime.StopApplication();
        }

    }
    private static void Capture(ParseResult parseResult)
    {
        var outputFile = parseResult.GetRequiredValue(_captureOutputFile);
        var intensityWhite = parseResult.GetRequiredValue(_captureIntensityWhite);
        var intensityUv365nm = parseResult.GetRequiredValue(_captureIntensityUv365nm);
        var intensityUv254nm = parseResult.GetRequiredValue(_captureIntensityUv254nm);

        var builder = Host.CreateApplicationBuilder();

        builder.Logging.ClearProviders();
        builder.Logging.AddConsole(options => options.FormatterName = nameof(ConsoleFormatter));
        builder.Logging.AddConsoleFormatter<ConsoleFormatter, ConsoleFormatterOptions>();
        builder.Logging.AddProvider(new FileLoggerProvider("full.log", true));
        builder.Logging.AddProvider(new FileLoggerProvider("last_run.log", false));
        builder.Services.AddSingleton<LibCameraLogSink>();

        builder.Services.AddIlluminatorService("Hardware:Illuminator");
        builder.Services.AddCameraService("Hardware:Camera", true);

        builder.Services.AddHostedService<CaptureWorker>(services =>
        {
            var logger = services.GetRequiredService<ILogger<CaptureWorker>>();
            var applicationLifetime = services.GetRequiredService<IHostApplicationLifetime>();
            var cameraService = services.GetRequiredService<CameraService>();
            var illuminatorService = services.GetRequiredService<IlluminatorService>();
            return new CaptureWorker(logger, applicationLifetime, cameraService, illuminatorService, outputFile, intensityWhite, intensityUv365nm, intensityUv254nm);
        });

        var host = builder.Build();
        host.Services.GetRequiredService<LibCameraLogSink>();

        host.Run();
    }
}