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;

namespace VisionUI.Pattern {
    /// <summary>
    /// 바코드 로그 뷰 모델
    /// </summary>
    public class BcrLogViewModel : NotifyPropertyChangedBase {
        private Logger _Logger = new Logger("BcrLogViewModel");

        private ObservableCollection<BcrResultItem> bcrResultItems;
        /// <summary>바코드 결과 아이템 컬렉션</summary>
        public ObservableCollection<BcrResultItem> BcrResultItems { get => bcrResultItems; set => SetProperty(ref bcrResultItems, value); }

        private string dislayName;
        /// <summary>디스플레이 이름</summary>
        public string DisplayName { get => dislayName; set => SetProperty(ref dislayName, value); }

        private DateTime selectedDate;
        /// <summary>선택 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">서브 시스템 정보</param>
        public BcrLogViewModel(SubSysInfo subSysInfo) {
            _SubSysInfo = subSysInfo;
            _SubSysRecipe = VisionRecipeManager.GetSubSysRecipe(_SubSysInfo);
            DisplayName = _SubSysInfo.SubSysName + " " + _SubSysRecipe.FovRecipes[0].CamRecipe.CamId;
            BcrResultItems = new ObservableCollection<BcrResultItem>();
            SelectedDate = DateTime.Now.Date;

            SetObservable();
        }

        private void SetObservable() {
            VisionEnv.AuroraEnv.EventObservable.AsObservable(VisionEventId.UPDATE_BCR_RESULT).
                Where(x => x.From == _SubSysInfo.GetKey()).Subscribe(patternResult => UpdateBcrResult(patternResult));
        }
        /// <summary>
        /// 바코드 결과 값 업데이트
        /// </summary>
        /// <param name="msg">이벤트 메세지</param>
        public void UpdateBcrResult(EventMessage msg) {
            Application.Current.Dispatcher.BeginInvoke(
                new Action(() => {
                    BcrResultItems.Add(BcrResultItemManager.GetBcrResultItem(_SubSysInfo, msg.Param as PatternResult));
                }));
        }

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

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