using Matrox.MatroxImagingLibrary;
using MilCommon;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Security.Permissions;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Interop;
using VisionCommon;

namespace MilPattern
{
    internal class MilCustomizeMask
    {
        private static MilCustomizeMask _instance;
        private static readonly object _lock = new object();
        private MIL_ID _activatedMilId = MIL.M_NULL;
        private string _activatedFilePath = "";

        public static MilCustomizeMask Instance {
            get {
                lock (_lock) {
                    if (_instance == null) _instance = new MilCustomizeMask();
                }
                return _instance;
            }
        }

        private MilCustomizeMask() { }

        public MIL_ID GetActivatedMilId() { return _activatedMilId; }
        public string GetActivatedFilePath() { return _activatedFilePath; }
        public bool IsImageFile(string filePath)
        {
            string[] validExtensions = {".mim", ".jpg", ".jpeg", ".png", ".bmp", ".tif", ".tiff" };
            string fileExtension = System.IO.Path.GetExtension(filePath).ToLower();

            foreach (string extension in validExtensions) {
                if (fileExtension == extension) {
                    return true;
                }
            }
            return false;
        }
        public void LoadMaskingImage(string filePath, MIL_ID maskImage)
        {
            if (!IsImageFile(filePath)) return;
            if (_activatedMilId == MIL.M_NULL || _activatedFilePath != filePath) {
                if (_activatedMilId != MIL.M_NULL) MIL.MbufFree(_activatedMilId);

                _activatedMilId = MilEnvironment.LoadImage(filePath, maskImage);
                _activatedFilePath = filePath;
            }
        }
        public void Mask(MIL_ID srcImage, MIL_ID dstImage)
        {
            if (_activatedFilePath != "" && _activatedMilId != MIL.M_NULL) MIL.MimArith(srcImage, _activatedMilId, dstImage, MIL.M_AND);
            else MilEnvironment.CopyImage(srcImage, dstImage);
        }
    }
}