using DTS.Common.Enums;
using DTS.Common.Enums.DASFactory;
using System;
using System.Windows;
using System.Windows.Data;

namespace DTS.Common.Converters
{
    /// <summary>
    /// This converter will returns a visibility based on whether pretrigger should be shown or not
    /// it should be bound to RecordingMode an optional parameter allows inverting the return
    /// </summary>
    public class RecordingModePreTriggerVisibilityConverter : IValueConverter
    {
        public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {
            var showPreTrigger = true;
            if ((value is RecordingModes mode) &&
                (RecordingModeExtensions.IsAnActiveMode(mode) || !RecordingModeExtensions.CanProgramPreTrigger(mode)))
            {
                showPreTrigger = false;
            }
            
            var invert = false;
            if (bool.TrueString.Equals(parameter)) { invert = true; }
            if (showPreTrigger)
            {
                return invert ? Visibility.Collapsed : Visibility.Visible;
            }
            else { return invert ? Visibility.Visible : Visibility.Collapsed; }
        }

        public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {
            return null != value && value.Equals(Visibility.Visible) ? parameter : Binding.DoNothing;
        }
    }
}