using comal.timesheets.Data_Classes;
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 DataGridHeaderTapped(int columnnumber, SearchUtils.SortDirection SortDirection);
    public delegate void DataGridHeaderFilterTapped(int columnnumber, string columnname);

    [XamlCompilation(XamlCompilationOptions.Compile)]
    public partial class DataGridHeaderRow : ContentView
    {
        public event DataGridHeaderTapped OnDataGridHeaderTapped;
        public event DataGridHeaderFilterTapped OnDataGridHeaderFilterTapped;
        public string ColumnName    { get; set; }

        public int ColumnNumber { get; set; }

        public SearchUtils.SortDirection SortDirection { get; set; }
        public DataGridHeaderRow()
        {
            InitializeComponent();
            SortDirection = SearchUtils.SortDirection.Default;
        }

        private void HeaderBtn_Clicked(object sender, EventArgs e)
        {
            SortDirection = ChooseDirection(SortDirection);
            OnDataGridHeaderTapped?.Invoke(ColumnNumber, SortDirection);
        }

        private void Image_tapped(object sender, EventArgs e)
        {
            OnDataGridHeaderFilterTapped?.Invoke(ColumnNumber, ColumnName);
        }

        public void Setup()
        {
            headerBtn.Text = ColumnName;
            if (ColumnName == "Image")
                filterBtn.IsVisible = false;
            ForceLayout();
        }

        private SearchUtils.SortDirection ChooseDirection(SearchUtils.SortDirection sortdirection)
        {
            switch (sortdirection)
            {
                case SearchUtils.SortDirection.Default:
                    sortdirection = SearchUtils.SortDirection.Ascending;
                    break;
                case SearchUtils.SortDirection.Ascending:
                    sortdirection = SearchUtils.SortDirection.Descending;
                    break;
                case SearchUtils.SortDirection.Descending:
                    sortdirection = SearchUtils.SortDirection.Ascending;
                    break;
            }
            return sortdirection;
        }

        public void ChangeFilterColour(bool filterpresent)
        {
            if (filterpresent)
            {
                col1.Width = 30;
                col0.Width = 0;
            }             
            else
            {
                col1.Width = 0;
                col0.Width = 30;
            }
        }        
    }
}