prs/prs.mobile.new/PRS.Mobile/Modules/Warehousing/Transfer/RecTransferPopup.xaml.cs

using Comal.Classes;
using InABox.Clients;
using InABox.Core;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Linq.Expressions;
using System.Text;
using System.Threading.Tasks;

using Xamarin.Forms;
using Xamarin.Forms.Xaml;

namespace PRS.Mobile
{
    [XamlCompilation(XamlCompilationOptions.Compile)]

    public partial class RecTransferPopup 
    {
        public delegate void RecTransferItemAcceptedEvent();

        public delegate void RecTransferPopupBackButtonPressed();

        public event RecTransferItemAcceptedEvent? OnRecTransferItemAccepted;

        public event RecTransferPopupBackButtonPressed? OnRecTransferPopupBackButtonPressed;
        public StockHoldingShell_Old Shell { get; set; }

        Job DefaultJob;

        Job ReceivingJob;
        bool stocktake = false;

        public double OriginalQty = 0.0;
        public RecTransferPopup(StockHoldingShell_Old _shell, Job _defaultJob, Job _receivingJob, bool _stocktake = false)
        {
            InitializeComponent();
            stocktake = _stocktake;
            if (_stocktake)
                jobBtn.IsEnabled = false;
            Shell = _shell;
            OriginalQty = _shell.Units;
            DefaultJob = _defaultJob;
            ReceivingJob = _receivingJob;
            if (ReceivingJob.ID != Guid.Empty)
            {
                jobBtn.IsEnabled = false;
                styleBtn.IsEnabled = false;
            }               
            LoadImage();
            LoadScreen();
        }

        protected override Task<bool> OnBackButtonClicked()
        {
            OnRecTransferPopupBackButtonPressed?.Invoke();
            return base.OnBackButtonClicked();
        }

        private void LoadScreen()
        {
            Device.BeginInvokeOnMainThread(() =>
            {
                if (ReceivingJob.ID != Guid.Empty)
                {
                    Shell.JobID = ReceivingJob.ID;
                    Shell.JobName = ReceivingJob.Name;
                    Shell.JobNumber = ReceivingJob.JobNumber;
                    Shell.DisplayJob = "Job: " + ReceivingJob.JobNumber;
                    jobBtn.Text = Shell.JobNumber;
                }
                else if (Shell.JobID != Guid.Empty)
                {
                    jobBtn.Text = Shell.JobNumber;
                }
                else if (DefaultJob.ID != Guid.Empty)
                {
                    Shell.JobID = DefaultJob.ID;
                    Shell.JobName = DefaultJob.Name;
                    Shell.JobNumber = DefaultJob.JobNumber;
                    Shell.DisplayJob = "Job: " + DefaultJob.JobNumber;
                    jobBtn.Text = Shell.JobNumber;
                }

                if (!string.IsNullOrWhiteSpace(Shell.Finish))
                {
                    styleBtn.Text = Shell.Finish;
                }
                qty.Text = Shell.Units.ToString();
            });
        }

        private void SelectJob_Clicked(object sender, EventArgs e)
        {
            if (ReceivingJob.ID != Guid.Empty)
                return;
            var jobSelectionPage = new JobSelectionPage(
                (job) =>
                {
                    Shell.JobID = job.ID;
                    Shell.JobName = job.Name;
                    Shell.JobNumber = job.JobNumber;
                    Shell.DisplayJob = "Job: " + Shell.JobNumber;
                    jobBtn.Text = Shell.JobNumber;
                }
            );
            Navigation.PushAsync(jobSelectionPage);
        }

        private void SelectStyle_Clicked(object sender, EventArgs e)
        {
            var page = new GenericSelectionPage(
                   "Select Product Style",
                   new SelectionViewModel<ProductStyle>(
                       null,
                       new Expression<Func<ProductStyle, object>>[] { x => x.Code, x => x.Description },
                       null,
                       new SortOrder<ProductStyle>(x => x.Code)
                   )
               );
            page.OnItemSelected += (o,e) =>
            {
                var style = e.Row.ToObject<ProductStyle>();
                Shell.StyleID = style.ID;
                Shell.Finish = style.Description;
                Shell.StyleName = "Finish: " + style.Description;
                Shell.StyleCode = style.Code;
                styleBtn.Text = Shell.Finish;
            };
            Navigation.PushAsync(page);
        }

        private void Qty_Changed(object sender, EventArgs e)
        {
            if (!string.IsNullOrWhiteSpace(qty.Text))
            {
                if (double.TryParse(qty.Text, out double value))
                {
                    if (value > 0 || stocktake)
                    {
                        Shell.Units = value;
                        Shell.DisplayUnits = "Units: " + Shell.Units;
                        accept_Btn.IsEnabled = true;
                    }
                    else
                    {
                        qty.Text = OriginalQty.ToString();
                        Shell.Units = OriginalQty;
                        Shell.DisplayUnits = "Units: " + Shell.Units;
                        accept_Btn.IsEnabled = true;
                    }
                }
                else
                {
                    accept_Btn.IsEnabled = false;
                }
            }
            else
            {
                accept_Btn.IsEnabled = false;
            }
        }

        private void AcceptBtn_Clicked(object sender, EventArgs e)
        {
            if (Shell.Units != 0 || stocktake)
            {
                OnRecTransferItemAccepted?.Invoke();
                Navigation.PopAsync();
            }
        }
        private async void LoadImage()
        {
            await Task.Run(() =>
            {
                CoreTable table = new Client<Product>().Query
                   (
                   new Filter<Product>(x => x.Code).IsEqualTo(Shell.Code),
                   new Columns<Product>(x => x.Image.ID)
                   );
                if (table.Rows.Any())
                {
                    CoreTable table2 = new Client<Document>().Query(new Filter<Document>(x => x.ID).IsEqualTo(table.Rows.FirstOrDefault().Get<Product, Guid>(x => x.Image.ID)));
                    if (table2.Rows.Any())
                    {
                        CoreRow docrow = table2.Rows.FirstOrDefault();
                        if (docrow != null)
                        {
                            byte[] data = docrow.Get<Document, byte[]>(x => x.Data);
                            DataToImage(data);
                        }
                    }
                }
            });
        }

        private void DataToImage(byte[] data)
        {
            ImageSource src = ImageSource.FromStream(() => new MemoryStream(data));

            if (src != null)
            {
                Device.BeginInvokeOnMainThread(() =>
                {
                    productImage.Source = src;
                    ForceLayout();
                });
            }
        }




    }
}