using Aurora.Api;
using MilCommon;
using VisionCommon;
using Hermes;
using Matrox.MatroxImagingLibrary;
using System;
using System.IO;
using System.Drawing;
using Aurora.Api.DataType;
using System.Collections.Generic;

namespace MilPattern {
    public class Caliper : PatternBase, IPatternFinder, IDisposable {
        public string FILE_EXT_PATTERN { get; set; } = ".mrk";

        private Logger _logger;
        private PatternInfo _patternInfo;
        private MIL_ID _contextId = MIL.M_NULL;

        public Caliper(PatternInfo patternInfo) {
            _patternInfo = patternInfo;
            _logger = new Logger(
                $"Caliper_{patternInfo.GetPatternIndex()}");
            InitContext();
        }

        private void InitContext() {
            if (E1.OK != Load()) {
                Create();
            }
        }

        public string GetPatternFilePath(string patternName = PatternConstants.FILE_NAME_PATTERN) {
            return Path.Combine(new string[] {
                PatternConstants.GetSubPatternDirPath(_patternInfo),
                patternName + FILE_EXT_PATTERN
            });
        }

        public int Load() {
            var patternFilePath = GetPatternFilePath();

            if (!File.Exists(patternFilePath)) {
                _logger.I($"Pattern File does NOT exist : {patternFilePath}");
                return E2.NOT_FOUND;
            }

            FreeContexts();
            _contextId = MilMeasureCommon.LoadContext(_patternInfo.MilSystemId, patternFilePath);
            return E1.OK;
        }

        public int Save() {
            var patternFilePath = GetPatternFilePath();
            var patternDirPath = Path.GetDirectoryName(patternFilePath);
            if (!Directory.Exists(patternDirPath)) {
                Directory.CreateDirectory(patternDirPath);
            }

            return MilMeasureCommon.SaveContext(_contextId, patternFilePath);
        }

        public int Create() {
            FreeContexts();
            _contextId = MilMeasureWidth.CreateContext(_patternInfo.MilSystemId);

            return E1.OK;
        }

        public int Remove() {
            FreeContexts();

            var patternFilePath = GetPatternFilePath();
            var patternDirPath = Path.GetDirectoryName(patternFilePath);
            if (Directory.Exists(patternDirPath)) {
                Directory.Delete(patternDirPath, recursive: true);
            }

            return E1.OK;
        }

        public ROI GetFindROI() {
            return MilMeasureCommon.GetFindROI(_contextId);
        }

        public int SetFindROI(ROI findRoi) {
            return MilMeasureCommon.SetFindROI(_contextId, findRoi);
        }

        public IRunParam GetRunParam() {
            return MilMeasureWidth.GetRunParam(_contextId);
        }

        public int SetRunParam(IRunParam runParam) {
            return MilMeasureWidth.SetRunParam(_contextId, runParam);
        }

        public PatternResult Find(object image) {
            return MilMeasureWidth.Find(_contextId, (MIL_ID)image);
        }

        public PatternResult Find(object image, ROI findRoi) {
            return MilMeasureWidth.Find(_contextId, (MIL_ID)image, findRoi);
        }

        public PatternResult GetNotFoundPatternResult() {
            return MilMeasureWidth.GetNotFoundPatternResult();
        }

        public object GetTool() {
            return _contextId;
        }

        public void Draw(
            PatternResult patternResult, ICameraDisplay cameraDisplay, bool isFixturePattern = false) {
            MilMeasureWidth.Draw(_contextId, patternResult, cameraDisplay as IMilCameraDisplay);
        }

        public Bitmap GetThumbnail() {
            MIL_ID thumnailImage = MIL.M_NULL;
            try {
                var imageSize = ThumbnailUtil.GetImageSize();
                thumnailImage = MilEnvironment.GetCompatibleImageBuffer(
                    imageSize, _patternInfo.MilSystemId);
                MilEnvironment.ClearImage(thumnailImage);

                var findRoi = GetFindROI();
                var center = MilEnvironment.GetImageCenter(thumnailImage);

                var offsets = new List<ImagePoint>() {
                    new ImagePoint(5, 0),
                    new ImagePoint(-5, 0)
                };

                for (int i = 0; i < 2; i++) {
                   MIL.MgraRectAngle(
                   MIL.M_DEFAULT,
                   thumnailImage,
                   center.X + offsets[i].X,
                   center.Y + offsets[i].Y,
                   1,
                   imageSize.Height * 1.2,
                   0,
                   MIL.M_CENTER_AND_DIMENSION + MIL.M_FILLED);
                }

                MIL.MimRotate(thumnailImage, thumnailImage, findRoi.Angle.Degree,
                    MIL.M_DEFAULT, MIL.M_DEFAULT, MIL.M_DEFAULT, MIL.M_DEFAULT, MIL.M_NEAREST_NEIGHBOR);

                return MilEnvironment.ConvertToBitmap(thumnailImage);
            }
            catch (Exception e) {
                _logger.FuncE(e.Message);
            }
            finally {
                MilEnvironment.FreeImage(thumnailImage);
            }

            return ThumbnailUtil.GetDefaultImage();
        }

        #region IDisposible
        public void Dispose() {
            FreeContexts();
        }

        private void FreeContexts() {
            MilMeasureCommon.FreeContext(_contextId);

            _contextId = MIL.M_NULL;
        }
        #endregion
    }
}