/*
  * Copyright (c) 2025 LG Electronics Inc.
   * SPDX-License-Identifier: LicenseRef-LGE-Proprietary
   */
using Aurora.Api;
using MilCommon;
using VisionCommon;
using Hermes;
using Matrox.MatroxImagingLibrary;
using System;
using System.Collections.Generic;
using Aurora.Api.DataType;

namespace MilPattern {
    public enum ePolarity {
        Any = MIL.M_ANY,
        Negative = MIL.M_NEGATIVE,
        Positive = MIL.M_POSITIVE,
        Opposite = MIL.M_OPPOSITE
    }

    internal static class MilMeasureCommon {
        private static Logger _Logger = new Logger(typeof(MilMeasureCommon).Name);

        public static MIL_ID CreateContext(MIL_ID milSystem, MIL_ID markerType) {
            MIL_ID contextId = MIL.M_NULL;
            MIL.MmeasAllocMarker(milSystem, markerType, MIL.M_DEFAULT, ref contextId);
            MIL.MmeasSetMarker(contextId, MIL.M_SUB_REGIONS_NUMBER, 10, MIL.M_NULL);
            MIL.MmeasSetMarker(contextId, MIL.M_BOX_ANGLE_TOLERANCE, 360, MIL.M_NULL);  // Default : °¢µµ Á¦ÇÑ ¾øÀ½

            return contextId;
        }

        public static MIL_ID LoadContext(MIL_ID milSystem, string filePath) {
            MIL_ID contextId = MIL.M_NULL;
            MIL.MmeasRestoreMarker(filePath, milSystem, MIL.M_DEFAULT, ref contextId);

            return contextId;
        }

        public static int SaveContext(MIL_ID contextId, string filePath) {
            if (contextId != MIL.M_NULL && filePath != null) {
                MIL.MmeasSaveMarker(filePath, contextId, MIL.M_DEFAULT);

                return E1.OK;
            }

            return E1.GENERIC;
        }

        public static void FreeContext(MIL_ID contextId) {
            if (contextId != MIL.M_NULL) {
                MIL.MmeasFree(contextId);
            }
        }

        private static MIL_ID CreateResultContext(MIL_ID contextId) {
            var milSystem = GetSystemOfContext(contextId);

            return MIL.MmeasAllocResult(milSystem, MIL.M_DEFAULT, MIL.M_NULL);
        }

        private static MIL_ID GetSystemOfContext(MIL_ID contextId) {
            return (MIL_ID)MIL.MmeasInquire(contextId, MIL.M_OWNER_SYSTEM, MIL.M_NULL, MIL.M_NULL);
        }

        public static ROI GetFindROI(MIL_ID contextId) {
            double boxCenterX = 0, boxCenterY = 0;
            double width = 0, height = 0;
            double angleDeg = 0;

            MIL.MmeasInquire(contextId, MIL.M_BOX_CENTER, ref boxCenterX, ref boxCenterY);
            MIL.MmeasInquire(contextId, MIL.M_BOX_SIZE, ref width, ref height);
            MIL.MmeasInquire(contextId, MIL.M_BOX_ANGLE, ref angleDeg, MIL.M_NULL);

            return new ROI(
                new ImagePoint(boxCenterX, boxCenterY),
                (int)width, (int)height,
                Angle.CreateWithDegree(angleDeg));
        }

        public static int SetFindROI(MIL_ID contextId, ROI findRoi) {
            MIL.MmeasSetMarker(contextId, MIL.M_BOX_ANGLE_REFERENCE, MIL.M_BOX_CENTER, MIL.M_NULL);
            MIL.MmeasSetMarker(contextId, MIL.M_BOX_CENTER, findRoi.CenterX, findRoi.CenterY);
            MIL.MmeasSetMarker(contextId, MIL.M_BOX_SIZE, findRoi.Width, findRoi.Height);
            MIL.MmeasSetMarker(contextId, MIL.M_BOX_ANGLE, findRoi.Angle.Degree, MIL.M_NULL);

            return E1.OK;
        }

        public static PatternResult Find(
            MIL_ID contextId,
            MIL_ID image,
            Func<MIL_ID, double, PatternResult> funcExtractResults,
            ROI findRoi) {
            var patternResult = new PatternResult();
            var oldFindRoi = GetFindROI(contextId);

            try {
                SetFindROI(contextId, findRoi);
                patternResult = Find(contextId, image, funcExtractResults);
            }
            catch (Exception e) {
                _Logger.FuncE(e.Message);
            }
            finally {
                SetFindROI(contextId, oldFindRoi);
            }

            return patternResult;
        }

        public static PatternResult Find(
            MIL_ID contextId,
            MIL_ID image,
            Func<MIL_ID, double, PatternResult> funcExtractResults) {
            MIL.MappTimer(MIL.M_DEFAULT, MIL.M_TIMER_RESET + MIL.M_SYNCHRONOUS, MIL.M_NULL);

            if (MilEnvironment.IsColorImage(image)) {
                var grayImageId = MilEnvironment.ConvertToGray(image);
                MIL.MmeasFindMarker(MIL.M_DEFAULT, grayImageId, contextId, MIL.M_DEFAULT);

                MilEnvironment.FreeImage(grayImageId);
            }
            else {
                MIL.MmeasFindMarker(MIL.M_DEFAULT, image, contextId, MIL.M_DEFAULT);
            }

            double tactTime = 0;
            MIL.MappTimer(MIL.M_DEFAULT, MIL.M_TIMER_READ + MIL.M_SYNCHRONOUS, ref tactTime);

            return funcExtractResults(contextId, tactTime);
        }

        public static void DrawSubPositions(MIL_ID contextId, IMilCameraDisplay milCameraDisplay) {
            MIL_INT subRegionNumber = 0;
            MIL.MmeasInquire(contextId, MIL.M_SUB_REGIONS_NUMBER + MIL.M_TYPE_MIL_INT, ref subRegionNumber, MIL.M_NULL);

            if (0 < subRegionNumber) {
                var subEdgeFirstX = new double[subRegionNumber];
                var subEdgeFirstY = new double[subRegionNumber];
                var subEdgeSecondX = new double[subRegionNumber];
                var subEdgeSecondY = new double[subRegionNumber];
                MIL.MmeasGetResult(contextId, MIL.M_SUB_EDGES_POSITION + MIL.M_EDGE_FIRST, subEdgeFirstX, subEdgeFirstY);
                MIL.MmeasGetResult(contextId, MIL.M_SUB_EDGES_POSITION + MIL.M_EDGE_SECOND, subEdgeSecondX, subEdgeSecondY);

                int crossLength = 3;
                var crosses = new List<Cross>();

                for (int i = 0; i < subEdgeFirstX.Length; i++) {
                    crosses.Add(new Cross(new ImagePoint(subEdgeFirstX[i], subEdgeFirstY[i]), crossLength));
                    crosses.Add(new Cross(new ImagePoint(subEdgeSecondX[i], subEdgeSecondY[i]), crossLength));
                }
                milCameraDisplay.AddCrosses(crosses, GraphicColors.PatternAdditionInfo);
            }
        }

        public static void DrawPosition(MIL_ID contextId, IMilCameraDisplay milCameraDisplay) {
            MIL_INT numOfResult = 0;
            MIL.MmeasGetResult(contextId, MIL.M_NUMBER + MIL.M_TYPE_MIL_INT, ref numOfResult);

            if (0 < numOfResult) {
                double positionX = 0, positionY = 0;
                var crosses = new List<Cross>();

                MIL.MmeasGetResultSingle(contextId, MIL.M_POSITION, ref positionX, ref positionY, 0);

                var color = GraphicColors.PatternFoundOK;
                var cross = new Cross(new ImagePoint(positionX, positionY), 5);
                crosses.Add(cross);

                milCameraDisplay.SetPatternTracking(cross);
                milCameraDisplay.AddCross(cross, color);
                milCameraDisplay.DrawPatternTrackings(crosses);
            }
        }

        public static Line<ImagePoint> GetMinLengthLine(
            LineEquation lineEquation, ImageSize imageSize) {
            var line1 = new Line<ImagePoint>(
                new ImagePoint(0, lineEquation.GetY(0)),
                new ImagePoint(imageSize.Width, lineEquation.GetY(imageSize.Width)));

            var line2 = new Line<ImagePoint>(
                new ImagePoint(lineEquation.GetX(0), 0),
                new ImagePoint(lineEquation.GetX(imageSize.Height), imageSize.Height));

            return line1.Length < line2.Length ? line1 : line2;
        }
    }
}