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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using Tango.Core;
using Tango.Core.DI;
using Tango.FSE.Common.Resolution;

namespace Tango.FSE.UI.Resolution
{
    [TangoCreateWhenRegistered]
    public class DefaultResolutionService : ExtendedObject, IResolutionService
    {
        public event EventHandler<ResolutionMode> ResolutionModeChanged;
        public event EventHandler<SizeChangedEventArgs> ResolutionChanged;

        private ResolutionMode resolution;
        public ResolutionMode Resolution
        {
            get
            {
                return resolution;
            }
            private set
            {
                resolution = value;
                RaisePropertyChangedAuto();
            }
        }

        private bool isLowResolution;
        public bool IsLowResolution
        {
            get
            {
                return isLowResolution;
            }
            private set
            {
                isLowResolution = value;
                RaisePropertyChangedAuto();
            }
        }


        private bool isHighResolution;
        public bool IsHighResolution
        {
            get
            {
                return isHighResolution;
            }
            private set
            {
                isHighResolution = value;
                RaisePropertyChangedAuto();
            }
        }

        private double resolutionWidth;
        public double ResolutionWidth
        {
            get
            {
                return resolutionWidth;
            }
            private set
            {
                resolutionWidth = value;
                RaisePropertyChangedAuto();
            }
        }

        private double resolutionHeight;
        public double ResolutionHeight
        {
            get
            {
                return resolutionHeight;
            }
            private set
            {
                resolutionHeight = value;
                RaisePropertyChangedAuto();
            }
        }

        public DefaultResolutionService()
        {
            var window = Application.Current.MainWindow;
            if (window != null)
            {
                window.SizeChanged += Window_SizeChanged;
            }
        }

        private void Window_SizeChanged(object sender, SizeChangedEventArgs e)
        {
            var size = e.NewSize;

            ResolutionWidth = size.Width;
            ResolutionHeight = size.Height;

            IsHighResolution = ResolutionWidth > 1280 && ResolutionHeight > 800;
            IsLowResolution = !isHighResolution;

            ResolutionMode previousMode = Resolution;

            Resolution = IsHighResolution ? ResolutionMode.High : ResolutionMode.Low;

            if (Resolution != previousMode)
            {
                ResolutionModeChanged?.Invoke(this, Resolution);
            }

            ResolutionChanged?.Invoke(this, e);
        }
    }
}