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

namespace OperationControl.Controls
{
    /// <summary>
    /// Interaction logic for AttitudeIndicator.xaml
    /// </summary>
    public partial class AttitudeIndicator : UserControl
    {
        public AttitudeIndicator()
        {
            InitializeComponent();

            DataContext = this;
            UpdateChrome();
        }

        // ===== Dependency Properties =====
        public static readonly DependencyProperty RollDegProperty =
            DependencyProperty.Register(nameof(RollDeg), typeof(double), typeof(AttitudeIndicator),
                new PropertyMetadata(0.0, OnAngleChanged));

        public static readonly DependencyProperty PitchDegProperty =
            DependencyProperty.Register(nameof(PitchDeg), typeof(double), typeof(AttitudeIndicator),
                new PropertyMetadata(0.0, OnAngleChanged));

        public static readonly DependencyProperty PxPerDegProperty =
            DependencyProperty.Register(nameof(PxPerDeg), typeof(double), typeof(AttitudeIndicator),
                new PropertyMetadata(2.0, OnAngleChanged));

        public static readonly DependencyProperty WarningLimitProperty =
            DependencyProperty.Register(nameof(WarningLimit), typeof(double), typeof(AttitudeIndicator),
                new PropertyMetadata(10.0, OnAngleChanged));

        public static readonly DependencyProperty CriticalLimitProperty =
            DependencyProperty.Register(nameof(CriticalLimit), typeof(double), typeof(AttitudeIndicator),
                new PropertyMetadata(18.0, OnAngleChanged));

        private static readonly DependencyPropertyKey PitchOffsetPxPropertyKey =
            DependencyProperty.RegisterReadOnly(
                nameof(PitchOffsetPx),
                typeof(double),
                typeof(AttitudeIndicator),
                new PropertyMetadata(0.0));

        public static readonly DependencyProperty PitchOffsetPxProperty =
            PitchOffsetPxPropertyKey.DependencyProperty;

        public double PitchOffsetPx
        {
            get => (double)GetValue(PitchOffsetPxProperty);
            private set => SetValue(PitchOffsetPxPropertyKey, value);
        }

        public double RollDeg
        {
            get => (double)GetValue(RollDegProperty);
            set => SetValue(RollDegProperty, value);
        }
        public double PitchDeg
        {
            get => (double)GetValue(PitchDegProperty);
            set => SetValue(PitchDegProperty, value);
        }
        public double PxPerDeg
        {
            get => (double)GetValue(PxPerDegProperty);
            set => SetValue(PxPerDegProperty, value);
        }
        public double WarningLimit
        {
            get => (double)GetValue(WarningLimitProperty);
            set => SetValue(WarningLimitProperty, value);
        }
        public double CriticalLimit
        {
            get => (double)GetValue(CriticalLimitProperty);
            set => SetValue(CriticalLimitProperty, value);
        }


        // === LATERAL ERROR ===
        public static readonly DependencyProperty LateralErrorProperty =
            DependencyProperty.Register(
                nameof(LateralError),
                typeof(double),
                typeof(AttitudeIndicator),
                new PropertyMetadata(0.0, OnLateralChanged));

        public static readonly DependencyProperty LateralMaxAbsProperty =
            DependencyProperty.Register(
                nameof(LateralMaxAbs),
                typeof(double),
                typeof(AttitudeIndicator),
                new PropertyMetadata(50.0, OnLateralChanged)); // 0,5 m por padrão

        private static readonly DependencyPropertyKey LateralNormalizedPropertyKey =
            DependencyProperty.RegisterReadOnly(
                nameof(LateralNormalized),
                typeof(double),
                typeof(AttitudeIndicator),
                new PropertyMetadata(0.0));

        public static readonly DependencyProperty LateralNormalizedProperty =
            LateralNormalizedPropertyKey.DependencyProperty;

        public double LateralError
        {
            get => (double)GetValue(LateralErrorProperty);
            set => SetValue(LateralErrorProperty, value);
        }

        public double LateralMaxAbs
        {
            get => (double)GetValue(LateralMaxAbsProperty);
            set => SetValue(LateralMaxAbsProperty, value);
        }

        /// <summary>
        /// Erro lateral normalizado em [-1, 1]
        /// -1 = limite à esquerda, 0 = centro, +1 = limite à direita
        /// </summary>
        public double LateralNormalized
        {
            get => (double)GetValue(LateralNormalizedProperty);
            private set => SetValue(LateralNormalizedPropertyKey, value);
        }

        // Derivados
        public double MaxAbsAngle => Math.Max(Math.Abs(RollDeg), Math.Abs(PitchDeg));

        public event PropertyChangedEventHandler PropertyChanged;
        void Raise(string n) => PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(n));

        static void OnAngleChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
        {
            var c = (AttitudeIndicator)d;   // agora compila pois herda de UserControl
            c.PitchOffsetPx = -c.PitchDeg * c.PxPerDeg;
            c.Raise(nameof(PitchOffsetPx));
            c.Raise(nameof(MaxAbsAngle));
            c.UpdateChrome();
        }

        void UpdateChrome()
        {
            if (Chrome == null) return;

            var a = MaxAbsAngle;
            if (a >= CriticalLimit)
                Chrome.BorderBrush = new SolidColorBrush(Color.FromRgb(0xE7, 0x4C, 0x3C)); // vermelho
            else if (a >= WarningLimit)
                Chrome.BorderBrush = new SolidColorBrush(Color.FromRgb(0xF1, 0xC4, 0x0F)); // amarelo
            else
                Chrome.BorderBrush = new SolidColorBrush(Color.FromRgb(0x2E, 0xCC, 0x71)); // verde
        }

        static void OnLateralChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
        {
            var c = (AttitudeIndicator)d;
            c.UpdateLateral();
            c.Raise(nameof(LateralNormalized));
        }

        void UpdateLateral()
        {
            var max = Math.Max(0.0001, LateralMaxAbs);

            // normaliza para [-1, 1] e faz clamp
            var n = LateralError / max;
            if (n > 1) n = 1;
            if (n < -1) n = -1;

            LateralNormalized = n;
        }


        
    }

    
}