using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

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

namespace comal.timesheets
{
    public delegate void DataGridHostSaved(List<DataGridViewModelItem> selecteditems);
    [XamlCompilation(XamlCompilationOptions.Compile)]
    public partial class DataGridHost : ContentPage
    {
        public event DataGridHostSaved OnSaved;
        public MobileDataGrid DataGrid { get; set; }
        public DataGridHost(MobileDataGrid datagrid)
        {
            InitializeComponent();
            NavigationPage.SetHasBackButton(this, false);
            DataGrid = datagrid;
            datagrid.OnOptionsSet += Datagrid_OnTitleSet;
            stackLayout.Children.Add(datagrid);
        }

        private void Datagrid_OnTitleSet(string title, DataGridSaveType savetype)
        {
            Device.BeginInvokeOnMainThread(() =>
            {
                titleLbl.Text = title + "s";
                saveBtn.IsVisible = savetype == DataGridSaveType.None ? false : true;
            });
        }

        private void CancelBtn_Clicked(object sender, EventArgs e)
        {
            Navigation.PopAsync();
        }

        private void SaveBtn_Clicked(object sender, EventArgs e)
        {
            OnSaved?.Invoke(CreateSelectedList());
        }

        private List<DataGridViewModelItem> CreateSelectedList()
        {
            var list = DataGrid.Items.Where(x => x.IsSelected == true);
            List<DataGridViewModelItem> newlist = new List<DataGridViewModelItem>();
            foreach (var item in list)
            {
                newlist.Add(item);
            }
            return newlist;
        }
    }
}