using System;
using System.Collections.Generic;
using System.Drawing;
using System.Globalization;
using System.Windows;
using System.Windows.Data;
using Comal.Classes;
using InABox.Core;
using InABox.WPF;

namespace PRSDesktop
{

    public class JobDocumentSetMileStoneConverter : IValueConverter
    {
        
        public static Dictionary<JobDocumentSetMileStoneStatus, System.Drawing.Color> StatusColors = new Dictionary<JobDocumentSetMileStoneStatus, Color>()
        {
            { JobDocumentSetMileStoneStatus.Unknown, System.Drawing.Color.Red },
            { JobDocumentSetMileStoneStatus.NotStarted, System.Drawing.Color.LightSalmon },
            { JobDocumentSetMileStoneStatus.InProgress, System.Drawing.Color.LightYellow },
            { JobDocumentSetMileStoneStatus.OnHold, System.Drawing.Color.Silver },
            { JobDocumentSetMileStoneStatus.InfoRequired, System.Drawing.Color.Silver },
            { JobDocumentSetMileStoneStatus.Submitted, System.Drawing.Color.Plum },
            { JobDocumentSetMileStoneStatus.Approved, System.Drawing.Color.LightGreen },
            { JobDocumentSetMileStoneStatus.Rejected, System.Drawing.Color.Gray },
            { JobDocumentSetMileStoneStatus.Cancelled, System.Drawing.Color.Gray },

        };

        public object Convert(object value, Type t, object parameter, CultureInfo culture)
        {
            try
            {
                switch (parameter)
                {
                    case "ID":
                        if (ValidJson(value))
                            return GetBlock(value).ID;
                        else
                            return Guid.Empty;

                    case "Revision":
                        if (ValidJson(value))
                            return String.IsNullOrWhiteSpace(GetBlock(value).Revision)
                        ? "--"
                        : String.Format("Rev {0}", GetBlock(value).Revision);
                        else
                            return "";

                    case "Status":
                        if (ValidJson(value))
                            return GetBlock(value).Status.ToString().SplitCamelCase();
                        else
                            return "";

                    case "Color":
                        if (ValidJson(value))
                            return ImageUtils.ColorToString(StatusColors[GetBlock(value).Status]);
                        else
                            return ImageUtils.ColorToString(Color.White);

                    case "Date":
                        if (ValidJson(value))
                            return String.Format("{0:dd MMM yy}", GetBlock(value).Date);
                        else
                            return "";

                    case "Notes":
                        if (ValidJson(value))
                            return GetBlock(value).Notes;
                        else
                            return "";

                    case "NotesColor":
                        if (ValidJson(value))
                            return String.IsNullOrWhiteSpace(GetBlock(value).Notes)
                        ? ImageUtils.ColorToString(Color.Transparent)
                        : ImageUtils.ColorToString(Color.Orchid);
                        else
                            return ImageUtils.ColorToString(Color.Transparent);

                    case "Attachments":
                        if (ValidJson(value))
                            return String.Format("{0} files attached", GetBlock(value).Attachments);
                        else
                            return "";

                    case "AttachmeentsColor":
                        if (ValidJson(value))
                            return GetBlock(value).Attachments == 0
                        ? ImageUtils.ColorToString(Color.Transparent)
                        : ImageUtils.ColorToString(Color.CornflowerBlue);
                        else
                            return ImageUtils.ColorToString(Color.Transparent);
                }

                return parameter.ToString();
            }
            catch (Exception e)
            {
                return e.Message;
            }
        }

        private static JobDocumentSetMileStoneBlock? GetBlock(object value)
        {
            return Serialization.Deserialize<JobDocumentSetMileStoneBlock>(value.ToString());
        }

        private bool ValidJson(object value)
        {
            if (value == null)
                return false;
            if ("".Equals(value))
                return false;
            else
                return true;
        }

        public object ConvertBack(object value, Type t, object parameter, CultureInfo culture)
        {
            return value.Equals(false) ? DependencyProperty.UnsetValue : parameter;
        }
    }
}