using System;
using System.Linq;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Media.Imaging;
using Comal.Classes;
using InABox.Clients;
using InABox.Core;
using InABox.DynamicGrid;
using InABox.WPF;

namespace PRSDesktop
{
    public class InvoiceTimeGrid : DynamicDataGrid<TimeSheet>
    {
        private Button ClearAllButton;
        private readonly BitmapImage gray = PRSDesktop.Resources.tick.AsGrayScale().AsBitmapImage();

        private readonly BitmapImage green = PRSDesktop.Resources.tick.AsBitmapImage();


        private readonly Button SelectAllButton;

        public InvoiceTimeGrid()
        {
            ColumnsTag = "InvoiceTimeSheets";
            Options.AddRange(DynamicGridOption.RecordCount, DynamicGridOption.SelectColumns, DynamicGridOption.MultiSelect);
            HiddenColumns.Add(x => x.InvoiceLink.ID);
            HiddenColumns.Add(x => x.InvoiceLink.Deleted);

            ActionColumns.Add(new DynamicActionColumn(InvoicedImage, InvoiceOne));
            SelectAllButton = AddButton("Select All", green, InvoiceAll);
            ClearAllButton = AddButton("Clear All", gray, InvoiceAll);
        }

        public Guid JobID { get; set; }
        public Guid InvoiceID { get; set; }

        private bool InvoiceAll(Button sender, CoreRow[] rows)
        {
            if (InvoiceID != Guid.Empty)
            {
                Progress.Show("Please wait..");
                var bAdd = sender == SelectAllButton;
                var filter = new Filter<TimeSheet>(x => x.JobLink.ID).IsEqualTo(JobID).And(x => x.Approved).IsNotEqualTo(DateTime.MinValue);
                if (bAdd)
                    filter = filter.And(x => x.InvoiceLink).NotLinkValid();
                else
                    filter = filter.And(x => x.InvoiceLink).LinkValid(InvoiceID);
                var timesheets = new Client<TimeSheet>().Load(filter);
                foreach (var timesheet in timesheets)
                    timesheet.InvoiceLink.ID = bAdd ? InvoiceID : Guid.Empty;
                new Client<TimeSheet>().Save(timesheets, bAdd ? "Added to Invoice" : "Removed From Invoice");
                Progress.Close();
                return true;
            }

            MessageBox.Show("Please Select or Create an Invoice First!");
            return false;
        }

        private bool InvoiceOne(CoreRow arg)
        {
            if (InvoiceID != Guid.Empty)
            {
                if (arg == null)
                    return false;

                var id = arg.Get<TimeSheet, Guid>(x => x.ID);
                var timesheet = new Client<TimeSheet>().Load(new Filter<TimeSheet>(x => x.ID).IsEqualTo(id)).FirstOrDefault();
                if (timesheet != null)
                {
                    timesheet.InvoiceLink.ID = !timesheet.InvoiceLink.IsValid() ? InvoiceID : Guid.Empty;
                    new Client<TimeSheet>().Save(timesheet, "Added to Invoice");
                    return true;
                }
            }

            MessageBox.Show("Please Select or Create an Invoice First!");
            return false;
        }

        private BitmapImage InvoicedImage(CoreRow arg)
        {
            if (arg == null)
                return green;
            if (!Entity.IsEntityLinkValid<TimeSheet, InvoiceLink>(x => x.InvoiceLink, arg))
                return gray;
            return green;
        }

        protected override void Reload(Filters<TimeSheet> criteria, Columns<TimeSheet> columns, ref SortOrder<TimeSheet> sort,
            Action<CoreTable, Exception> action)
        {
            var filter = new Filter<TimeSheet>(x => x.JobLink.ID).IsEqualTo(JobID).And(x => x.Approved).IsNotEqualTo(DateTime.MinValue);
            filter.Ands.Add(new Filter<TimeSheet>(x => x.InvoiceLink.ID).IsEqualTo(InvoiceID).Or(x => x.InvoiceLink).NotLinkValid());
            criteria.Add(filter);
            base.Reload(criteria, columns, ref sort, action);
        }
    }
}