using System;
using System.Linq;
using System.Linq.Expressions;
using System.Windows.Media.Imaging;
using InABox.Core;
using InABox.DynamicGrid;
using InABox.WPF;
using PRSDesktop.Forms;

namespace PRSDesktop
{
    internal class DynamicMapColumn<T> : DynamicImageColumn where T : Entity, new()
    {
        private readonly string Latitude = "";
        private readonly string Longitude = "";
        private readonly BitmapImage milestone = Resources.milestone.AsBitmapImage();
        private readonly string Timestamp = "";


        public DynamicMapColumn(DynamicGrid<T> grid, Expression<Func<T, object>> property) : base(r => null)
        {
            Latitude = CoreUtils.GetFullPropertyName(property, ".") + ".Latitude";
            Longitude = CoreUtils.GetFullPropertyName(property, ".") + ".Longitude";
            Timestamp = CoreUtils.GetFullPropertyName(property, ".") + ".Timestamp";

            grid.HiddenColumns.Add(CoreUtils.GetPropertyExpression<T>(Latitude));
            grid.HiddenColumns.Add(CoreUtils.GetPropertyExpression<T>(Longitude));
            grid.HiddenColumns.Add(CoreUtils.GetPropertyExpression<T>(Timestamp));

            Property = property;
            Image = MapImage;
            Action = MapClick;

            Filters = new[] { "(Blank)", "(Not Blank)" };
            FilterRecord = MapFilter;
        }

        private bool MapFilter(CoreRow row, string[] filter)
        {
            if (filter.Contains("(Blank)") && !HasLocation(row))
                return true;
            if (filter.Contains("(Not Blank)") && HasLocation(row))
                return true;
            return false;
        }

        public Expression<Func<T, object>> Property { get; }

        private bool HasLocation(CoreRow row)
        {
            if (row == null)
                return true;

            var lat = row.Get<double>(Latitude);
            var lng = row.Get<double>(Longitude);

            return lat != 0.0F && lng != 0.0F;
        }

        private BitmapImage MapImage(CoreRow row)
        {
            return HasLocation(row) ? milestone : null;
        }

        private bool MapClick(CoreRow row)
        {
            if (HasLocation(row))
            {
                var form = new MapForm(row.Get<double>(Latitude), row.Get<double>(Longitude), row.Get<DateTime>(Timestamp));
                form.ShowDialog();
            }

            return false;
        }
    }
}