using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Comal.Classes;
using InABox.Core;
using InABox.Mobile;
using Xamarin.Forms;
using Xamarin.Forms.Xaml;

namespace PRS.Mobile
{
    [XamlCompilation(XamlCompilationOptions.Compile)]
    public partial class RequisitionEditDetailsView : RequisitionEditView
    {
        
        public RequisitionEditDetailsView()
        {
            InitializeComponent();
        }

        public override void Refresh()
        {
           
        }

        private void Subject_OnTextChanged(object sender, TextChangedEventArgs e)
        {
            DoChanged(nameof(RequisitionShell.Title));
        }

        private void SelectJob_Clicked(object sender, MobileButtonClickEventArgs args)
        {
            ShowPopup(() => SelectionView.Execute<JobShell>(
                (columns) =>
                {
                    columns.Add(new MobileGridTextColumn<JobShell>()
                    {
                        Column = x => x.JobNumber, 
                        Width = GridLength.Auto, 
                        Caption = "#",
                        Alignment = TextAlignment.Center
                    });
                    columns.Add(new MobileGridTextColumn<JobShell>()
                    {
                        Column = x => x.Name,
                        Width = GridLength.Star,
                        Caption = "Select Job",
                        Alignment = TextAlignment.Start
                    });
                },
                (refresh) => App.Data.Jobs.Refresh(false), 
                (jobs) =>
                {
                    ViewModel.Item.JobID = jobs.FirstOrDefault()?.ID ?? Guid.Empty;
                    ViewModel.Item.JobName = jobs.FirstOrDefault()?.Name ?? string.Empty;
                    ViewModel.Item.JobNumber = jobs.FirstOrDefault()?.JobNumber ?? string.Empty;
                    DoChanged(nameof(RequisitionShell.JobDisplay));
                    DismissPopup();
                }));

        }

        private void Notes_OnTextChanged(object sender, TextChangedEventArgs e)
        {
            DoChanged(nameof(RequisitionShell.Notes));
        }

        private void Due_OnChanged(object sender, DateButtonChangedArgs args)
        {
            DoChanged(nameof(RequisitionShell.Due));
        }
        
        private void RequestedBy_Clicked(object sender, MobileButtonClickEventArgs args)
        {
            ShowPopup(() => SelectionView.Execute<EmployeeShell>(
                (columns) => columns.Add(new MobileGridTextColumn<Employee>() { Column = x=>x.Name, Width = GridLength.Star, Caption = "Select Employee", Alignment = TextAlignment.Start}),
                (refresh) => App.Data.Employees.Refresh(false), 
                (employees) =>
                {
                    ViewModel.Item.RequestedByID = employees.FirstOrDefault()?.ID ?? Guid.Empty;
                    ViewModel.Item.RequestedByName = employees.FirstOrDefault()?.Name ?? string.Empty;
                    DoChanged(nameof(RequisitionShell.RequestedByName));
                    DismissPopup();
                }));
        }
        
        
        private void Destination_Clicked(object sender, MobileButtonClickEventArgs args)
        {
            ShowPopup(() => SelectionView.Execute<RequisitionDestinationShell>(
                (columns) => columns.Add(new MobileGridTextColumn<RequisitionDestinationShell>() { Column = x=>x.Description, Width = GridLength.Star, Caption = "Select Destination", Alignment = TextAlignment.Start}),
                (refresh) => App.Data.RequisitionDestinations.Refresh(false), 
                (destinations) =>
                {
                    ViewModel.Item.DestinationID = destinations.FirstOrDefault()?.ID ?? Guid.Empty;
                    ViewModel.Item.DestinationDescription = destinations.FirstOrDefault()?.Description ?? string.Empty;
                    DoChanged(nameof(RequisitionShell.DestinationDescription));
                    DismissPopup();
                }));
            DoChanged(nameof(RequisitionShell.DestinationDescription));
        }
        
        private object EditorBackground_OnConverting(RequisitionEditMode value, object parameter)
        {
            return value == RequisitionEditMode.EditRequest 
                ? Color.LightYellow 
                : Color.Silver;
        }

        private object EditorForeground_OnConverting(RequisitionEditMode value, object parameter)
        {
            return value == RequisitionEditMode.EditRequest 
                ? Color.Black 
                : Color.Gray;
        }
        
        private object IsPickMode_OnConverting(RequisitionEditMode value, object parameter)
            => value == RequisitionEditMode.PickStock;
        
        private object IsEditMode_OnConverting(RequisitionEditMode value, object parameter)
            => value == RequisitionEditMode.EditRequest;

        private object RequestedBy_OnConverting(RequisitionShell? value, object parameter)
        {
            return value == null || value.RequestedByID == Guid.Empty
                ? "(Select Employee)"
                : ViewModel.Item.RequestedByName;
        }
        
        private object Destination_OnConverting(RequisitionShell? value, object parameter)
        {
            return value == null || value.DestinationID == Guid.Empty
                ? "(Select Delivery Method)"
                : ViewModel.Item.DestinationDescription;
        }
        
        private void Subject_OnFocused(object sender, FocusEventArgs e)
        {
            ViewModel.HideElements = true;
        }

        private void Subject_OnUnfocused(object sender, FocusEventArgs e)
        {
            ViewModel.HideElements = false;
        }

        private void Request_OnFocused(object sender, FocusEventArgs e)
        {
            ViewModel.HideElements = true;
        }

        private void Request_OnUnfocused(object sender, FocusEventArgs e)
        {
            ViewModel.HideElements = false;
        }
    }
}