using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using sharpknife.ViewModel;

namespace sharpknife //.Data
{
    public partial class StatusLog //: ViewModelBase
    {
        public enum StatusCodes
        {
            Unknown = 0,
            Waiting = 1,
            InProgress = 2,
            Complete = 3
        }

        public StatusCodes Status
        {
            get
            {
                return (StatusCodes)StatusCode;
            }
            set
            {
                StatusCode = (int)value;

                OnPropertyChanged("Status");
                OnPropertyChanged("ImageSource");
            }
        }

        private static Dictionary<string, StatusLog> StatusLogs = new Dictionary<string, StatusLog>();

        public string ImageSource
        {
            get
            {
                string imageSource = string.Empty;

                switch (Status)
                {
                    default:
                    case StatusCodes.Unknown:
                        imageSource = "/sharpknife;component/Images/unknown.png";
                        break;
                    case StatusCodes.Waiting:
                        imageSource = "/sharpknife;component/Images/imnbusy.png";
                        break;
                    case StatusCodes.InProgress:
                        imageSource = "/sharpknife;component/Images/imnidle.png";
                        break;
                    case StatusCodes.Complete:
                        imageSource = "/sharpknife;component/Images/imnon.png";
                        break;
                }

                return imageSource;
            }
        }

        public StatusLog()
        {
            Status = StatusCodes.Unknown;

            this.PropertyChanged += new System.ComponentModel.PropertyChangedEventHandler(StatusLog_PropertyChanged);
        }

        void StatusLog_PropertyChanged(object sender, System.ComponentModel.PropertyChangedEventArgs e)
        {
            if (e.PropertyName == "StatusCode")
            {
                OnPropertyChanged("Status");
            }
        }

        public static void Load()
        {
            using (databaseEntities context = new databaseEntities())
            {
                var query = (from s in context.StatusLog where s.Date == DateTime.Today select s);

                foreach (StatusLog statusLog in query)
                {
                    StatusLogs[statusLog.Key] = statusLog;
                }
            }
        }

        public void Save()
        {
            using (databaseEntities context = new databaseEntities())
            {
                StatusLog statusLog = context.StatusLog.SingleOrDefault(s => s.Date == DateTime.Today && s.Key == this.Key);

                if (statusLog == null)
                {
                    context.StatusLog.AddObject(this);
                }
                else
                {
                    context.StatusLog.ApplyCurrentValues(this);
                }                

                context.SaveChanges();
            }
        }

        public static StatusLog Get(string key)
        {
            if (
                !StatusLogs.ContainsKey(key) ||
                (StatusLogs.ContainsKey(key) && StatusLogs[key].Date != DateTime.Today)
                )
            {
                StatusLog statusLog = new StatusLog()
                {
                    StatusLogId = Guid.NewGuid(),
                    CreatedOn = DateTime.Now,
                    ModifiedOn = DateTime.Now,
                    Date = DateTime.Today,
                    Key = key
                };
                Set(statusLog);
                return statusLog;
            }

            return StatusLogs[key];
        }

        public static void Set(StatusLog statusLog)
        {
            StatusLogs[statusLog.Key] = statusLog;
        }
    }
}