using Aurora.Api;
using MilCommon;
using Matrox.MatroxImagingLibrary;
using MilPattern;
using System;
using System.ComponentModel;
using System.Runtime.CompilerServices;
using System.Windows;
using System.Windows.Controls;
using VisionCommon;
using System.Collections.Generic;
using System.Diagnostics;

namespace MilUI {
    /// <summary>
    /// Interaction logic for PreProcessingSettingView.xaml
    /// </summary>
    public partial class PreProcessingSettingView : UserControl, IDisposable, INotifyPropertyChanged {
        public Window ParentWindow { get; set; }
        public event PropertyChangedEventHandler PropertyChanged;

        public PreProcessingParam _preProcParam;
        public PreProcessingParam PreProcParam {
            get => _preProcParam;
            set {
                _preProcParam = value;
                OnPropertyChanged();
            }
        }

        public IEnumerable<eFilteringType> FilteringTypes { get; set; }
        public IEnumerable<eMorphologyType> MorphologyTypes { get; set; }
        private int REPEATLIMIT = 5;

        private Logger _logger = new Logger("PreProcessingSettingView");
        private PatternInfo _patternInfo;
        private IMilCameraDisplay _milCameraDisplay;
        private MIL_ID _systemId = MIL.M_NULL;
        private MIL_ID _displayImage = MIL.M_NULL;
        private MIL_ID _srcImage = MIL.M_NULL;
        private MIL_ID _preProcImage = MIL.M_NULL;

        public PreProcessingSettingView(PatternInfo patternInfo, ICameraDisplay cameraDisplay) {
            InitializeComponent();

            _patternInfo = patternInfo;
            _milCameraDisplay = cameraDisplay as IMilCameraDisplay;

            SetParam();
            InitDefaultParam();
            SetFilteringTypes();
            SetMorphologyTypes();
            InitImageBuffers();
            SetEventHandler();

            DataContext = this;
        }

        private void SetParam() {
            PreProcParam = _patternInfo.PreProcParam.Clone();
        }

        private void InitDefaultParam() {
            if (PreProcParam.FilParam.Types.Count != 5 || PreProcParam.FilParam.RepeatCounts.Count != 5) {
                PreProcParam.FilParam.Types.Clear();
                PreProcParam.FilParam.RepeatCounts.Clear();
                for (int i = 0; i < 5; i++) {
                    PreProcParam.FilParam.Types.Add(eFilteringType.None);
                    PreProcParam.FilParam.RepeatCounts.Add(0);
                }
            }

            if (PreProcParam.MorphParam.Types.Count != 5 || PreProcParam.MorphParam.RepeatCounts.Count != 5) {
                PreProcParam.MorphParam.Types.Clear();
                PreProcParam.MorphParam.RepeatCounts.Clear();
                for (int i = 0; i < 5; i++) {
                    PreProcParam.MorphParam.Types.Add(eMorphologyType.None);
                    PreProcParam.MorphParam.RepeatCounts.Add(0);
                }
            }
        }

        private void SetFilteringTypes() {
            var filteringTypes = new List<eFilteringType>();
            for (int i = 0; i < Enum.GetValues(typeof(eFilteringType)).Length; i++) {
                filteringTypes.Add((eFilteringType)i);
            }
            FilteringTypes = filteringTypes;
        }

        private void SetMorphologyTypes() {
            var morphologyTypes = new List<eMorphologyType>();
            for (int i = 0; i < Enum.GetValues(typeof(eMorphologyType)).Length; i++) {
                morphologyTypes.Add((eMorphologyType)i);
            }
            MorphologyTypes = morphologyTypes;
        }

        private void InitImageBuffers() {
            _systemId = _patternInfo.MilSystemId;
            if (_systemId != MIL.M_NULL) {
                FreeImageBuffers();

                // Source image of display
                _displayImage = _milCameraDisplay.GetImage();

                // Cloned source image
                _srcImage = MilEnvironment.GetCompatibleGrayImageBuffer(_displayImage);
                MilEnvironment.CopyImage(_displayImage, _srcImage);

                _preProcImage = MilEnvironment.GetCompatibleGrayImageBuffer(_srcImage);
                MilEnvironment.CopyImage(_srcImage, _preProcImage);
            }
        }

        private void FreeImageBuffers() {
            MilEnvironment.FreeImage(_srcImage);
            MilEnvironment.FreeImage(_preProcImage);
        }

        private void ApplyThreshold() {
            if (_displayImage != MIL.M_NULL &&
                _displayImage != _milCameraDisplay.GetImage()) {
                InitImageBuffers();
            }
            var sw = Stopwatch.StartNew();
            _preProcImage = ImgPreProcessor.GetPreProcessedImage(_srcImage, PreProcParam);
            _logger.I($"Pre-Processing Time : {sw.ElapsedMilliseconds} ms");
            MilEnvironment.CopyImage(_preProcImage, _displayImage);
        }

        protected void OnPropertyChanged(
            [CallerMemberName] string propertyName = null)
        => PropertyChanged?.Invoke(
            this,
            new PropertyChangedEventArgs(propertyName)
        );

        private void ReloadImageBtn_Clicked(object sender, RoutedEventArgs e) {
            SetParam();
            MilEnvironment.CopyImage(_srcImage, _displayImage);
            ApplyThreshold();
        }

        private void ApplyBtn_Clicked(object sender, RoutedEventArgs e) {
            _patternInfo.PreProcParam = PreProcParam.Clone();
            ParentWindow?.Close();
        }

        private void CancelBtn_Clicked(object sender, RoutedEventArgs e) {
            MilEnvironment.CopyImage(_srcImage, _displayImage);
            ParentWindow?.Close();
        }

        private void FilOnOff_Clicked(object sender, RoutedEventArgs e) {
            ApplyThreshold();
        }

        private void ComboBox_SelectionChanged(object sender, SelectionChangedEventArgs e) {
            if ((sender as ComboBox).Items.Count > 0) {
                ApplyThreshold();
            }
        }

        private void SetEventHandler() {
            sliderThresholdLow.SliderChangedEvent += ThresholdChangedEventHandler;
            sliderThresholdHigh.SliderChangedEvent += ThresholdChangedEventHandler;

            sliderFilter1.SliderChangedEvent += ThresholdChangedEventHandler;
            sliderFilter2.SliderChangedEvent += ThresholdChangedEventHandler;
            sliderFilter3.SliderChangedEvent += ThresholdChangedEventHandler;
            sliderFilter4.SliderChangedEvent += ThresholdChangedEventHandler;
            sliderFilter5.SliderChangedEvent += ThresholdChangedEventHandler;

            sliderMorph1.SliderChangedEvent += ThresholdChangedEventHandler;
            sliderMorph2.SliderChangedEvent += ThresholdChangedEventHandler;
            sliderMorph3.SliderChangedEvent += ThresholdChangedEventHandler;
            sliderMorph4.SliderChangedEvent += ThresholdChangedEventHandler;
            sliderMorph5.SliderChangedEvent += ThresholdChangedEventHandler;
        }

        private void ClearEventHandler() {
            sliderThresholdLow.SliderChangedEvent -= ThresholdChangedEventHandler;
            sliderThresholdHigh.SliderChangedEvent -= ThresholdChangedEventHandler;

            sliderFilter1.SliderChangedEvent -= ThresholdChangedEventHandler;
            sliderFilter2.SliderChangedEvent -= ThresholdChangedEventHandler;
            sliderFilter3.SliderChangedEvent -= ThresholdChangedEventHandler;
            sliderFilter4.SliderChangedEvent -= ThresholdChangedEventHandler;
            sliderFilter5.SliderChangedEvent -= ThresholdChangedEventHandler;

            sliderMorph1.SliderChangedEvent -= ThresholdChangedEventHandler;
            sliderMorph2.SliderChangedEvent -= ThresholdChangedEventHandler;
            sliderMorph3.SliderChangedEvent -= ThresholdChangedEventHandler;
            sliderMorph4.SliderChangedEvent -= ThresholdChangedEventHandler;
            sliderMorph5.SliderChangedEvent -= ThresholdChangedEventHandler;
        }

        public void ThresholdChangedEventHandler(object sender, EventArgs e) {
            ApplyThreshold();
        }

        private void ForegroundButton_Clicked(object sender, RoutedEventArgs e) {
            ApplyThreshold();
        }

        private void BinOnOff_Clicked(object sender, RoutedEventArgs e) {
            if (!PreProcParam.BinaryEnabled()) {
                ckBoxMorphEnabled.IsChecked = false;
            }
            ApplyThreshold();
        }

        private void MorphOnOff_Clicked(object sender, RoutedEventArgs e) {
            ApplyThreshold();
        }

        public void Dispose() {
            ClearEventHandler();
            FreeImageBuffers();
        }
    }
}