using Aurora.Api;
using Aurora.View;
using VisionCommon;
using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Reactive.Linq;
using System.Threading.Tasks;
using System.Windows;
using VisionInspector;
using Aurora.Api.DataType;

namespace VisionUI.Aligner {
    /// <summary>
    /// 패턴 Distance 로그 뷰 모델
    /// </summary>
    public class PatternDistanceLogViewModel : NotifyPropertyChangedBase {
        private Logger _Logger = new Logger(typeof(PatternDistanceLogViewModel).Name);

        private ObservableCollection<PatternDistanceResultItem> patternDistanceResultItems;
        public ObservableCollection<PatternDistanceResultItem> PatternDistanceResultItems { get => patternDistanceResultItems; set => SetProperty(ref patternDistanceResultItems, value); }

        private DateTime selectedDate;
        /// <summary>선택된 날짜</summary>
        public DateTime SelectedDate { get => selectedDate; set { SetProperty(ref selectedDate, value); CalendarChanged(value); } }

        private SubSysInfo _SubSysInfo;
        private SubSysRecipe _SubSysRecipe;
        private CsvManager _CsvManager = new CsvManager();
        /// <summary>
        /// 생성자
        /// </summary>
        /// <param name="subSysInfo">서브시스템 정보</param>
        public PatternDistanceLogViewModel(SubSysInfo subSysInfo) {
            _SubSysInfo = subSysInfo;
            _SubSysRecipe = VisionRecipeManager.GetSubSysRecipe(_SubSysInfo);
            PatternDistanceResultItems = new ObservableCollection<PatternDistanceResultItem>();
            SelectedDate = DateTime.Now.Date;

            SetObservable();
        }

        private void SetObservable() {
            VisionEnv.AuroraEnv.EventObservable.AsObservable(VisionEventId.UPDATE_PATTERN_DISTANCE_RESULTS).
                Where(x => x.From == _SubSysInfo.GetKey()).Subscribe(patternDistanceResult => UpdatePatternDistanceResults(patternDistanceResult));
        }
        /// <summary>
        /// 패턴 Distance 결과값 업데이트
        /// </summary>
        /// <param name="msg">이벤트 메세지</param>
        public void UpdatePatternDistanceResults(EventMessage msg) {
            var patternDistanceResults = msg.Param as List<PatternDistanceResult>;

            Application.Current.Dispatcher.BeginInvoke(
                new Action(() => {
                    foreach (PatternDistanceResult result in patternDistanceResults) {
                        if ((_SubSysRecipe.AlignRecipes[0].ProcParams.ProcFovType == eProcFovType.C2_F4_MV) && patternDistanceResults.Count > 1) {
                            if (result.StartFov == eFovId.Fov1 && result.EndFov == eFovId.Fov2) {
                                continue;
                            }
                        }
                        PatternDistanceResultItems.Add(PatternDistanceResultItemManager.GetPatternDistanceResultItem(_SubSysInfo, result));
                    }
                }));

            // Dispatcher에 같이 넣을 경우, 전체적으로 느려질 수 있음
            Task.Run(() => { PrintPatternDistanceResult(patternDistanceResults); });
        }

        // 패턴 거리검사 결과를 화면에 텍스트로 뿌린다.
        private void PrintPatternDistanceResult(List<PatternDistanceResult> patternDistanceResults) {
            var fovInfo = VisionRecipeManager.GetLastFovInfo(_SubSysInfo);
            var cameraDisplay = CameraDisplayManager.GetDisplay(fovInfo);
            var colorTestList = new List<ColorText>();

            foreach (PatternDistanceResult result in patternDistanceResults) {
                eColor color = (result.InspStatus == InspStatus.NG) ? eColor.Red : eColor.Green;
                string msg = string.Format(
                    "{0}_{1} / D : {2:F3} / E : {3:F3} / S : {4}",
                    result.StartFov, result.EndFov, result.Distance, result.ErrRange, result.InspStatus);

                colorTestList.Add(new ColorText(color, msg));
            }

            var cameraAgent = CameraAgentManager.GetCameraAgent(fovInfo);
            var imageSize = cameraAgent.GetImageSize();
            var textPosY = GetTextPosY(imageSize, patternDistanceResults.Count);
            cameraDisplay.AddColorTextList(new ImagePoint(30, textPosY), colorTestList, 75);
        }

        private double GetTextPosY(ImageSize imageSize, int count) {
            switch (count) {
                case 1:
                    return imageSize.Height - 75;
                case 2:
                    return imageSize.Height - 150;
                case 3:
                    return imageSize.Height - 225;
                case 4:
                    return imageSize.Height - 300;
                case 5:
                    return imageSize.Height - 375;
                case 6:
                default:
                    return imageSize.Height - 450;
            }
        }

        private void CalendarChanged(DateTime dateTime) {
            LoadCsv(dateTime);
        }

        private void LoadCsv(DateTime dateTime) {
            try {
                PatternDistanceResultItems?.Clear();
                List<PatternDistanceResultItem> items =
                    _CsvManager.LoadCsv<PatternDistanceResultItem>(_SubSysInfo, dateTime, eSaveDataType.PatternDistance);
                if (items != null) {    // 로드할 파일이 없으면 items가 null임.
                    foreach (PatternDistanceResultItem item in items) {
                        PatternDistanceResultItems.Add(item);
                    }
                }
            }
            catch (Exception e) {
                _Logger.FuncE(e.Message);
            }
        }
    }
}