using System.Windows;
using System.Windows.Media.Animation;
using System.Windows.Media;
using UserControl = System.Windows.Controls.UserControl;
using Color = System.Windows.Media.Color;

namespace OperationControl.Controls
{
    /// <summary>
    /// Interaction logic for TemperatureIndicator.xaml
    /// </summary>
    public partial class TemperatureIndicator : UserControl
    {
        public TemperatureIndicator()
        {
            InitializeComponent();
            Loaded += (_, __) => UpdateMarker();
            SizeChanged += (_, __) => UpdateMarker();
        }

        // ===== Dependency Properties =====
        public static readonly DependencyProperty ValueProperty =
            DependencyProperty.Register(nameof(Value), typeof(double), typeof(TemperatureIndicator),
                new PropertyMetadata(0d, OnValueChanged));

        public static readonly DependencyProperty MinProperty =
            DependencyProperty.Register(nameof(Min), typeof(double), typeof(TemperatureIndicator),
                new PropertyMetadata(0d, OnAnyRangeChanged));

        public static readonly DependencyProperty MaxProperty =
            DependencyProperty.Register(nameof(Max), typeof(double), typeof(TemperatureIndicator),
                new PropertyMetadata(80d, OnAnyRangeChanged));

        public static readonly DependencyProperty WarnStartProperty =
            DependencyProperty.Register(nameof(WarnStart), typeof(double), typeof(TemperatureIndicator),
                new PropertyMetadata(50d));

        public static readonly DependencyProperty CritStartProperty =
            DependencyProperty.Register(nameof(CritStart), typeof(double), typeof(TemperatureIndicator),
                new PropertyMetadata(55d));

        public static readonly DependencyProperty LabelProperty =
            DependencyProperty.Register(nameof(Label), typeof(string), typeof(TemperatureIndicator),
                new PropertyMetadata("Temperatura"));

        public static readonly DependencyProperty UnitsProperty =
            DependencyProperty.Register(nameof(Units), typeof(string), typeof(TemperatureIndicator),
                new PropertyMetadata(" °C"));

        public static readonly DependencyProperty AnimateOnChangeProperty =
            DependencyProperty.Register(nameof(AnimateOnChange), typeof(bool), typeof(TemperatureIndicator),
                new PropertyMetadata(true));

        public static readonly DependencyProperty BlinkOnCriticalProperty =
            DependencyProperty.Register(nameof(BlinkOnCritical), typeof(bool), typeof(TemperatureIndicator),
                new PropertyMetadata(true));

        // ===== CLR wrappers =====
        public double Value { get => (double)GetValue(ValueProperty); set => SetValue(ValueProperty, value); }
        public double Min { get => (double)GetValue(MinProperty); set => SetValue(MinProperty, value); }
        public double Max { get => (double)GetValue(MaxProperty); set => SetValue(MaxProperty, value); }
        public double WarnStart { get => (double)GetValue(WarnStartProperty); set => SetValue(WarnStartProperty, value); }
        public double CritStart { get => (double)GetValue(CritStartProperty); set => SetValue(CritStartProperty, value); }
        public string Label { get => (string)GetValue(LabelProperty); set => SetValue(LabelProperty, value); }
        public string Units { get => (string)GetValue(UnitsProperty); set => SetValue(UnitsProperty, value); }
        public bool AnimateOnChange { get => (bool)GetValue(AnimateOnChangeProperty); set => SetValue(AnimateOnChangeProperty, value); }
        public bool BlinkOnCritical { get => (bool)GetValue(BlinkOnCriticalProperty); set => SetValue(BlinkOnCriticalProperty, value); }

        // ===== Callbacks =====
        static void OnValueChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
        {
            var ctl = (TemperatureIndicator)d;
            ctl.UpdateMarker(animated: ctl.AnimateOnChange);
            ctl.UpdateCriticalBlink();
        }
        static void OnAnyRangeChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
        {
            var ctl = (TemperatureIndicator)d;
            ctl.UpdateMarker();
        }

        // ===== Marker positioning + animation =====
        void UpdateMarker(bool animated = false)
        {
            if (!IsLoaded) return;
            var barWidth = ActualWidth - 12; // margem interna aproximada
            if (barWidth <= 0) return;

            double clamped = Math.Max(Min, Math.Min(Max, Value));
            double t = (clamped - Min) / Math.Max(1e-6, (Max - Min));
            double targetX = t * barWidth;

            if (MarkerTT == null) return;

            if (animated)
            {
                var anim = new DoubleAnimation
                {
                    To = Math.Max(0, targetX - 5), // centraliza o triângulo de 10px
                    Duration = TimeSpan.FromMilliseconds(140),
                    EasingFunction = new CubicEase { EasingMode = EasingMode.EaseOut }
                };
                MarkerTT.BeginAnimation(TranslateTransform.XProperty, anim, HandoffBehavior.SnapshotAndReplace);
            }
            else
            {
                MarkerTT.BeginAnimation(TranslateTransform.XProperty, null);
                MarkerTT.X = Math.Max(0, targetX - 5);
            }
        }

        // ===== Glow crítico =====
        Storyboard _blinkSb;
        void UpdateCriticalBlink()
        {
            if (!BlinkOnCritical || CritStart <= WarnStart)
            {
                StopBlink();
                return;
            }
            if (Value >= CritStart)
                StartBlink();
            else
                StopBlink();
        }

        void StartBlink()
        {
            if (_blinkSb != null) return;
            var anim = new ColorAnimation
            {
                From = Color.FromArgb(0x00, 0xFF, 0x00, 0x00),
                To = Color.FromArgb(0x22, 0xFF, 0x00, 0x00),
                Duration = TimeSpan.FromMilliseconds(600),
                AutoReverse = true,
                RepeatBehavior = RepeatBehavior.Forever,
                EasingFunction = new SineEase { EasingMode = EasingMode.EaseInOut }
            };
            var brush = new SolidColorBrush(Color.FromArgb(0, 255, 0, 0));
            AlertGlow.Background = brush;
            _blinkSb = new Storyboard();
            Storyboard.SetTarget(_blinkSb, brush);
            Storyboard.SetTargetProperty(_blinkSb, new PropertyPath(SolidColorBrush.ColorProperty));
            _blinkSb.Children.Add(anim);
            _blinkSb.Begin();
        }

        void StopBlink()
        {
            _blinkSb?.Stop();
            _blinkSb = null;
            if (AlertGlow?.Background is SolidColorBrush b)
                b.Color = Color.FromArgb(0x00, 0xFF, 0x00, 0x00);
        }
    }
}