using System;
using System.Collections.Generic;
using AwesomeTechnologies.VegetationSystem;
using Unity.Collections;
using Unity.Jobs;
using UnityEditor;
using UnityEngine;


namespace AwesomeTechnologies.Vegetation.Masks
{
    [System.Serializable]
    public enum TextureMaskType
    {       
        // ReSharper disable once InconsistentNaming
        RGBAChannel = 0
    }

    [System.Serializable]
    public enum TextureMaskRuleType
    {
        Include = 1,
        Exclude = 2,
        Density = 3,
        Scale = 4
    }



    [System.Serializable]
    public class TextureMaskGroup
    {
        public List<TextureMask> TextureMaskList = new List<TextureMask>();
        public string TextureMaskName;
        public TextureMaskType TextureMaskType;
        public List<TextureFormat> RequiredTextureFormatList = new List<TextureFormat>();

        public string TextureMaskGroupID;

        public TextureMaskSettings Settings; //{ get; set; }

        public TextureMaskGroup(TextureMaskType textureMaskType)
        {
            TextureMaskType = textureMaskType;
            TextureMaskName = "New texture mask";

            TextureMaskGroupID = Guid.NewGuid().ToString();

            Settings = new TextureMaskSettings();

            switch (textureMaskType)
            {
                case TextureMaskType.RGBAChannel:
                    Settings.AddRgbaSelectorProperty("ChannelSelector", "Select channel", "", 0);
                    Settings.AddBooleanProperty("Inverse", "Inverse", "", false);
                    RequiredTextureFormatList.Add(TextureFormat.RGBA32);
                    RequiredTextureFormatList.Add(TextureFormat.ARGB32);
                    break;
                //case TextureMaskType.Grayscale:
                //    Settings.AddBooleanProperty("Inverse", "Inverse", "", false);
                //    RequiredTextureFormatList.Add(TextureFormat.RGBA32);
                //    RequiredTextureFormatList.Add(TextureFormat.ARGB32);
                //    break;
            }
        }

        public Texture2D GetPreviewTexture()
        {
            for (int i = 0; i <= TextureMaskList.Count - 1; i++)
            {
                if (TextureMaskList[i].MaskTexture)
                {
                    return TextureMaskList[i].MaskTexture;
                }
            }

            return null;
        }

        public JobHandle SampleIncludeMask(VegetationInstanceData instanceData, Rect spawnRect,
            TextureMaskRule textureMaskRule, JobHandle dependsOn)
        {
            for (int i = 0; i <= TextureMaskList.Count - 1; i++)
            {
                dependsOn = TextureMaskList[i]
                    .SampleIncludeMask(instanceData, spawnRect, TextureMaskType, textureMaskRule, dependsOn);
            }

            return dependsOn;
        }

        public JobHandle SampleExcludeMask(VegetationInstanceData instanceData, Rect spawnRect,
            TextureMaskRule textureMaskRule, JobHandle dependsOn)
        {
            for (int i = 0; i <= TextureMaskList.Count - 1; i++)
            {
                dependsOn = TextureMaskList[i]
                    .SampleExcludeMask(instanceData, spawnRect, TextureMaskType, textureMaskRule, dependsOn);
            }

            return dependsOn;
        }

        public JobHandle SampleScaleMask(VegetationInstanceData instanceData, Rect spawnRect,
            TextureMaskRule textureMaskRule, JobHandle dependsOn)
        {
            for (int i = 0; i <= TextureMaskList.Count - 1; i++)
            {
                dependsOn = TextureMaskList[i]
                    .SampleScaleMask(instanceData, spawnRect, TextureMaskType, textureMaskRule, dependsOn);
            }

            return dependsOn;
        }

        public JobHandle SampleDensityMask(VegetationInstanceData instanceData, Rect spawnRect,
            TextureMaskRule textureMaskRule, JobHandle dependsOn)
        {
            for (int i = 0; i <= TextureMaskList.Count - 1; i++)
            {
                dependsOn = TextureMaskList[i]
                    .SampleDensityMask(instanceData, spawnRect, TextureMaskType, textureMaskRule, dependsOn);
            }

            return dependsOn;
        }
    }
}