using Aurora.Api;
using Aurora.View;
using VisionCommon;
using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Reactive.Linq;
using System.Windows;
using VisionSequence.Aligner;
using VisionAligner;

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

        private ObservableCollection<PatternResultItem> patternResultItems;
        /// <summary>Pattern 결과 Items</summary>
        public ObservableCollection<PatternResultItem> PatternResultItems { get => patternResultItems; set => SetProperty(ref patternResultItems, value); }

        private DateTime selectedDate;
        /// <summary>선택한 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 PatternLogViewModel(SubSysInfo subSysInfo) {
            _SubSysInfo = subSysInfo;
            _SubSysRecipe = VisionRecipeManager.GetSubSysRecipe(_SubSysInfo);
            PatternResultItems = new ObservableCollection<PatternResultItem>();
            //ProcResultItemManager.SetPatternResultItems(_SubSysInfo, PatternResultItems);
            SelectedDate = DateTime.Now.Date;

            SetObservable();
        }

        private void SetObservable() {
            foreach (var fovRecipe in _SubSysRecipe.FovRecipes) {
                var fovInfo = VisionRecipeManager.GetFovInfo(_SubSysInfo, fovRecipe.FovId);

                VisionEnv.AuroraEnv.EventObservable.AsObservable(VisionEventId.UPDATE_PATTERN_RESULT).
                    Where(x => x.From == fovInfo.GetKey()).Subscribe(msg => UpdatePatternResult(msg));

                VisionEnv.AuroraEnv.EventObservable.AsObservable(VisionEventId.UPDATE_PATTERN_RESULTS).
                    Where(x => x.From == fovInfo.GetKey()).Subscribe(msg => UpdatePatternResults(msg));
            }
        }
        /// <summary>
        /// 패턴 결과 업데이트
        /// </summary>
        /// <param name="msg">이벤트 메세지</param>
        public void UpdatePatternResult(EventMessage msg) {
            var patternResult = msg.Param as PatternResult;
            PatternResultItem item = PatternResultItemManager.GetPatternResultItem(_SubSysInfo, patternResult);

            Application.Current.Dispatcher.BeginInvoke(
                new Action(() => {
                    PatternResultItems.Add(item);
                }));
            _CsvManager.SaveCsv(_SubSysInfo, item, eSaveDataType.Pattern);
        }
        /// <summary>
        /// 여러개의 패턴 결과 업데이트
        /// </summary>
        /// <param name="msg">이벤트 메세지</param>
        public void UpdatePatternResults(EventMessage msg) {
            var patternResults = msg.Param as Dictionary<int, PatternResult>;

            Application.Current.Dispatcher.BeginInvoke(
                new Action(() => {
                    foreach (var itemPairs in patternResults) {
                        var patternResult = itemPairs.Value;
                        var item = PatternResultItemManager.GetPatternResultItem(_SubSysInfo, patternResult);
                        PatternResultItems.Add(item);
                    }
                }));

            var dataList = new List<PatternResultItem>();
            foreach (var itemPairs in patternResults) {
                var patternResult = itemPairs.Value;
                dataList.Add(PatternResultItemManager.GetPatternResultItem(_SubSysInfo, patternResult));
            }
            _CsvManager.SaveCsv(_SubSysInfo, dataList, eSaveDataType.Pattern);
        }

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

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