using System;
using System.Collections.Generic;
using UnityEngine;
using Random = UnityEngine.Random;

namespace RayFire
{
    [Serializable]
    public class RFMirrored
    {
        public int      amount;
        public PlaneType planeType;
        
        [HideInInspector]
        public bool noPoints = false;
        
        // Constructor
        public RFMirrored()
        {
            amount = 50;
            planeType = PlaneType.XY;
        }
        
        /// /////////////////////////////////////////////////////////
        /// Mirrored custom point cloud
        /// /////////////////////////////////////////////////////////

        // Get final point cloud for custom fragmentation
        public static List<Vector3> GetMirroredPointCLoud (RFMirrored mirror, Transform tm, int seed, Bounds bound)
        {
            // Get input points
            List<Vector3> inputPoints = new List<Vector3>();
            
            // Get mesh bound
            // Multiply by transform
            // 20% 60% 20$
            
            // Stop if no points
            if (inputPoints.Count <= 1)
                mirror.noPoints = true;
            
            return inputPoints;
        }
    }

    [Serializable]
    public class RFCustom
    {
        public enum RFPointCloudSourceType
        {
            ChildrenTransform = 4,
            TransformList    = 8,
            Vector3List      = 12
        }
        
        public enum RFPointCloudUseType
        {
            VolumePoints = 4,
            PointCloud   = 12
        }
        
        public enum RFModifierType
        {
            None       = 0,
            Splinters  = 3,
            Slabs      = 6
        }
        
        public RFPointCloudSourceType source;
        public RFPointCloudUseType    useAs;
        public int                    amount;
        public float                  radius;
        public bool                   enable;
        public float                  size;
        
        public List<Transform>        transforms;
        public List<Vector3>          vector3;
        public bool                   noPoints;

        [NonSerialized] public List<Vector3> inputPoints;
        //[NonSerialized] 
        public List<Vector3> outputPoints;
        //[NonSerialized] 
        public List<Vector3> inBoundPoints;
        // [NonSerialized] 
        public List<Vector3> outBoundPoints;
        
        public RFCustom()
        {
            source = RFPointCloudSourceType.ChildrenTransform;
            useAs  = RFPointCloudUseType.PointCloud;
            amount = 100;
            radius = 1f;
            enable = true;
            size   = 0.05f;
        }
        
        public RFCustom(RFCustom src)
        {
            source     = src.source;
            useAs      = src.useAs;
            amount     = src.amount;
            radius     = src.radius;
            enable     = false;
            size       = src.size;
            transforms = src.transforms;
            vector3    = src.vector3;
        }
        
        /// /////////////////////////////////////////////////////////
        /// Static
        /// /////////////////////////////////////////////////////////

        // Get final point cloud for custom fragmentation
        public static List<Vector3> GetCustomPointCLoud (RFCustom custom, Transform tm, int seed, Bounds bound)
        {
            // Set input points
            SetCustomInputCloud (custom, tm);

            // Set final output point cloud
            SetCustomOutputCloud (custom, seed, bound);
            
            // Set points in bound
            SetCustomBoundPoints (custom, bound);
            
            // Stop if no points
            if (custom.inBoundPoints.Count <= 1)
                custom.noPoints = true;
            
            return custom.inBoundPoints;
        }
        
        // Get custom input cloud
        static void SetCustomInputCloud(RFCustom custom, Transform tm)
        {
            // Vars
            custom.noPoints   = false;
            if (custom.inputPoints == null)
                custom.inputPoints = new List<Vector3> ();
            else
                custom.inputPoints.Clear();
            
            // Children transform
            if (custom.source == RFPointCloudSourceType.ChildrenTransform)
            {
                if (tm.childCount > 0)
                    for (int i = 0; i < tm.childCount; i++)
                        custom.inputPoints.Add (tm.GetChild (i).position);
            }        
            
            // Transform array
            else if (custom.source == RFPointCloudSourceType.TransformList)
            {
                if (custom.transforms != null && custom.transforms.Count > 0)
                    for (int i = 0; i < custom.transforms.Count; i++)
                         if (custom.transforms[i] != null)
                             custom.inputPoints.Add (custom.transforms[i].position);
            }
            
            // Vector 3 array
            else if (custom.source == RFPointCloudSourceType.Vector3List)
            {
                if (custom.vector3 != null && custom.vector3.Count > 0)
                    for (int i = 0; i < custom.vector3.Count; i++)
                        custom.inputPoints.Add (custom.vector3[i]);
            }
        }

        // Get final output point cloud
        static void SetCustomOutputCloud(RFCustom custom, int seed, Bounds bound)
        {
            // Use same input point
            if (custom.useAs == RFPointCloudUseType.PointCloud)
                custom.outputPoints = custom.inputPoints;
            
            // Volume around point
            if (custom.useAs == RFPointCloudUseType.VolumePoints)
            {
                // Stop if no points
                if (custom.inputPoints.Count == 0)
                    custom.outputPoints = custom.inputPoints;
                
                // Get amount of points in radius 
                int pointsPerPoint = custom.amount / custom.inputPoints.Count;
                int localSeed      = seed;
                
                // Generate new points around point
                custom.outputPoints = new List<Vector3>();
                for (int p = 0; p < custom.inputPoints.Count; p++)
                {
                    localSeed++;
                    Random.InitState (localSeed);
                    for (int i = 0; i < pointsPerPoint; i++)
                    {
                        Vector3 randomPoint = RandomPointInRadius (custom.inputPoints[p], custom.radius);
                        if (bound.Contains (randomPoint) == false)
                        {
                            randomPoint = RandomPointInRadius (custom.inputPoints[p], custom.radius);
                            if (bound.Contains (randomPoint) == false)
                                randomPoint = RandomPointInRadius (custom.inputPoints[p], custom.radius);
                        }
                        custom.outputPoints.Add (randomPoint);
                    }
                }
            }
        }
        
        // Filter world points by bound intersection
        static void SetCustomBoundPoints(RFCustom custom, Bounds bound)
        {
            // Set outbound list
            if (custom.outBoundPoints == null) 
                custom.outBoundPoints = new List<Vector3>(); 
            else custom.outBoundPoints.Clear();
            
            if (custom.inBoundPoints == null) 
                custom.inBoundPoints = new List<Vector3>(); 
            else custom.inBoundPoints.Clear();
            
            // Filter points byu bound
            for (int i = custom.outputPoints.Count - 1; i >= 0; i--)
                if (bound.Contains(custom.outputPoints[i]) == false)
                    custom.outBoundPoints.Add (custom.outputPoints[i]);
                else
                    custom.inBoundPoints.Add (custom.outputPoints[i]);
        }
        
        // Random point in radius around input point
        static Vector3 RandomPointInRadius(Vector3 point, float radius)
        {
            return RandomVector() * Random.Range (0f, radius) + point;
        }
        
        // Random vector
        static Vector3 RandomVector()
        {
            return new Vector3(Random.Range (-1f, 1f), Random.Range (-1f, 1f), Random.Range (-1f, 1f));
        }
    }
}