using CtrEditor.ObjetosSim;
using System.Collections.ObjectModel;
using System.Windows;

namespace CtrEditor
{
    public class ObjectAlignment
    {
        private readonly ObservableCollection<osBase> _selectedObjects;

        public ObjectAlignment(ObservableCollection<osBase> selectedObjects)
        {
            _selectedObjects = selectedObjects;
        }

        public void AlignLeft()
        {
            if (_selectedObjects.Count <= 1) return;
            
            float leftMost = _selectedObjects.Min(obj => obj.Left);
            foreach (var obj in _selectedObjects)
            {
                obj.Left = leftMost;
            }
        }

        public void AlignRight()
        {
            if (_selectedObjects.Count <= 1) return;
            
            float rightMost = _selectedObjects.Max(obj => obj.Left + obj.Ancho);
            foreach (var obj in _selectedObjects)
            {
                obj.Left = rightMost - obj.Ancho;
            }
        }

        public void AlignTop()
        {
            if (_selectedObjects.Count <= 1) return;
            
            float topMost = _selectedObjects.Min(obj => obj.Top);
            foreach (var obj in _selectedObjects)
            {
                obj.Top = topMost;
            }
        }

        public void AlignBottom()
        {
            if (_selectedObjects.Count <= 1) return;
            
            float bottomMost = _selectedObjects.Max(obj => obj.Top + obj.Alto);
            foreach (var obj in _selectedObjects)
            {
                obj.Top = bottomMost - obj.Alto;
            }
        }

        public void AlignCenterHorizontally()
        {
            if (_selectedObjects.Count <= 1) return;
            
            float averageY = _selectedObjects.Average(obj => obj.Top + obj.Alto / 2);
            foreach (var obj in _selectedObjects)
            {
                obj.Top = averageY - obj.Alto / 2;
            }
        }

        public void AlignCenterVertically()
        {
            if (_selectedObjects.Count <= 1) return;
            
            float averageX = _selectedObjects.Average(obj => obj.Left + obj.Ancho / 2);
            foreach (var obj in _selectedObjects)
            {
                obj.Left = averageX - obj.Ancho / 2;
            }
        }

        public void DistributeHorizontally()
        {
            if (_selectedObjects.Count <= 2) return;

            // Ordenar objetos por su centro X real (considerando rotación)
            var objectsWithCenters = _selectedObjects
                .Select(obj => new 
                {
                    Object = obj,
                    Center = GetObjectCenter(obj)
                })
                .OrderBy(x => x.Center.X)
                .ToList();

            // Calcular el espacio total y el espaciado
            float leftMost = (float)objectsWithCenters.First().Center.X;
            float rightMost = (float)objectsWithCenters.Last().Center.X;
            float totalWidth = rightMost - leftMost;
            float spacing = totalWidth / (_selectedObjects.Count - 1);

            // Distribuir objetos basados en sus centros
            for (int i = 1; i < objectsWithCenters.Count - 1; i++)
            {
                var obj = objectsWithCenters[i].Object;
                var targetCenterX = leftMost + (spacing * i);
                var currentCenter = GetObjectCenter(obj);
                var deltaX = targetCenterX - currentCenter.X;

                obj.Left += (float)deltaX;
            }
        }

        public void DistributeVertically()
        {
            if (_selectedObjects.Count <= 2) return;

            // Ordenar objetos por su centro Y real (considerando rotación)
            var objectsWithCenters = _selectedObjects
                .Select(obj => new 
                {
                    Object = obj,
                    Center = GetObjectCenter(obj)
                })
                .OrderBy(x => x.Center.Y)
                .ToList();

            // Calcular el espacio total y el espaciado
            float topMost = (float)objectsWithCenters.First().Center.Y;
            float bottomMost = (float)objectsWithCenters.Last().Center.Y;
            float totalHeight = bottomMost - topMost;
            float spacing = totalHeight / (_selectedObjects.Count - 1);

            // Distribuir objetos basados en sus centros
            for (int i = 1; i < objectsWithCenters.Count - 1; i++)
            {
                var obj = objectsWithCenters[i].Object;
                var targetCenterY = topMost + (spacing * i);
                var currentCenter = GetObjectCenter(obj);
                var deltaY = targetCenterY - currentCenter.Y;

                obj.Top += (float)deltaY;
            }
        }

        private Point GetObjectCenter(osBase obj)
        {
            double angleRad = obj.Angulo * Math.PI / 180.0;
            float centerX = obj.Left + (obj.Ancho / 2);
            float centerY = obj.Top + (obj.Alto / 2);

            // Si el objeto está rotado, calcular el centro real
            if (obj.Angulo != 0)
            {
                // Obtener el centro después de la rotación
                var rotatedX = obj.Left + (Math.Cos(angleRad) * obj.Ancho / 2 - Math.Sin(angleRad) * obj.Alto / 2);
                var rotatedY = obj.Top + (Math.Sin(angleRad) * obj.Ancho / 2 + Math.Cos(angleRad) * obj.Alto / 2);
                
                return new Point(rotatedX, rotatedY);
            }

            return new Point(centerX, centerY);
        }
    }
}