using System;
using System.Collections.Generic;
using System.Linq;
using System.Linq.Expressions;
using System.Text;
using System.Threading.Tasks;
using comal.timesheets.QAForms;
using Comal.Classes;
using InABox.Clients;
using InABox.Core;
using Xamarin.Forms;
using Xamarin.Forms.Xaml;
using XF.Material.Forms.UI;
using XF.Material.Forms.UI.Dialogs;

namespace comal.timesheets
{
    [XamlCompilation(XamlCompilationOptions.Compile)]
    public partial class AssignmentForms : ContentView, IAssignmentPage
    {
        public AssignmentDetailModel DataModel => BindingContext as AssignmentDetailModel;
        
        public AssignmentForms()
        {
            InitializeComponent();
        }

        public void Load()
        {
            NoForms.IsVisible = !DataModel.Forms.Any();
            Forms.IsVisible = DataModel.Forms.Any();
            Forms.ItemsSource = DataModel.Forms.ToArray();
        }

        private async void MaterialCard_OnClicked(object sender, EventArgs e)
        {
            using (await MaterialDialog.Instance.LoadingDialogAsync(message: "Loading"))
            {
                var instance = (sender as MaterialCard).BindingContext as AssignmentFormShell;

                var form = new Client<AssignmentForm>()
                    .Query(new Filter<AssignmentForm>(x => x.ID).IsEqualTo(instance.ID))
                    .Rows
                    .Select(x => x.ToObject<AssignmentForm>())
                    .FirstOrDefault();

                
                var model = new DigitalFormHostModel<Assignment, AssignmentLink, AssignmentForm>();
                model.LoadItems(DataModel.Item.Entity, form, null);
                var host = new DigitalFormHost(model);

                host.OnClosing += (o, args) =>
                {
                    if (args.Changed)
                    {
                        //instance.Completed = !model.DigitalFormDataModel.Instance.FormCompleted.IsEmpty();
                    }
                };
                Navigation.PushAsync(host);
            }
        }

        private void AddForm_OnClicked(object sender, EventArgs e)
        {
            GenericSelectionPage page = new GenericSelectionPage
            (
                "Select Type",
                new SelectionViewModel<EmployeeDigitalForm>
                (
                    new Filter<EmployeeDigitalForm>(x => x.Form.AppliesTo).IsEqualTo(typeof(Assignment).EntityName().Split('.').Last())
                        .And(x=>x.Employee.ID).IsEqualTo(DataModel.Item.EmployeeID)
                        .And(x=>x.Form.Active).IsEqualTo(true)
                        .And(x=>x.Form.Secure).IsEqualTo(false),
                    new Expression<Func<EmployeeDigitalForm, object>>[] { x => x.Form.Code, x => x.Form.Description },
                    new Expression<Func<EmployeeDigitalForm, object>>[] { x => x.Form.ID },
                    new SortOrder<EmployeeDigitalForm>(x => x.Form.Code)
                ));
            page.OnItemSelected += (row) =>
            {
                var form = new AssignmentForm();
                form.Parent.ID = DataModel.Item.ID;
                form.Form.ID = row.Get<EmployeeDigitalForm, Guid>(x => x.Form.ID);
                form.Form.Code = row.Get<EmployeeDigitalForm, String>(x => x.Form.Code);
                form.Form.Description = row.Get<EmployeeDigitalForm, String>(x => x.Form.Description);
                
                new Client<AssignmentForm>().Save(form,"Created on Mobile Device",
                    (o, e) =>
                    {
                        Dispatcher.BeginInvokeOnMainThread(
                            () => {
                                // DataModel.Forms.Add(
                                //     new AssignmentFormShell()
                                //     {
                                //         ID = o.ID, 
                                //         Description = o.Form.Description,
                                //         Completed = false
                                //     }
                                // );
                                Forms.ItemsSource = DataModel.Forms.ToArray();
                            }
                        );
                    }
                );
            };
            Navigation.PushAsync(page);
        }

    }
}