using System.Collections.ObjectModel;

using Microsoft.Extensions.Logging;

using OpenCvSharp;

using GSS2.Core.Extensions;

namespace GSS2.Core.Analysis.AmineContent;

public class ImageCapturerMockService : IImageCapturerService
{
    // Список интенсивностей освещения для каждого кадра
    public static readonly ReadOnlyCollection<(double visible, double uv365, double uv254)> IlluminatorIntensities =
    [
        (0.02500, 0.0, 0.0),
        (0.01250, 0.0, 0.0),
        (0.00625, 0.0, 0.0),
        (0.00000, 1.0, 0.0),
        (0.00000, 0.0, 1.0),
        (0.00000, 1.0, 1.0),
        (0.01250, 1.0, 0.0),
        (0.01250, 0.0, 1.0),
        (0.01250, 1.0, 1.0),
        (0.00625, 1.0, 0.0),
        (0.00625, 0.0, 1.0),
        (0.00625, 1.0, 1.0)
    ];

    private readonly string _imagesDirectoryPath;
    private readonly ILogger<ImageCapturerMockService> _logger;

    public ImageCapturerMockService(string imagesDirectoryPath, ILogger<ImageCapturerMockService> logger)
    {
        _imagesDirectoryPath = imagesDirectoryPath;
        _logger = logger;
    }

    public async Task CaptureImages(Action<(int i, double visible, double uv365, double uv254, Mat image)> callback, CancellationToken cancellationToken) =>
        await CaptureImages(async (data) => callback(data), cancellationToken);

    public async Task CaptureImages(Func<(int i, double visible, double uv365, double uv254, Mat image), Task> callback, CancellationToken cancellationToken)
    {
        foreach (var (i, (visible, uv365, uv254)) in IlluminatorIntensities.Enumerate())
        {
            cancellationToken.ThrowIfCancellationRequested();
            _logger.LogInformation("Capturing images: {} / {} ({};{};{})", i + 1, IlluminatorIntensities.Count(), visible, uv365, uv254);

            Mat? image = Cv2.ImRead(Path.Join(_imagesDirectoryPath, $"{visible}-{uv365}-{uv254}.png"));
            if (image is null)
                throw new Exception("Image capture failed");

            await callback.Invoke((i, visible, uv365, uv254, image));
        }
    }
}