using System;
using System.Collections.Generic;
using UnityEngine;
using AK.Wwise;
using Wwise.Wooduan.Core;

namespace Wwise.Wooduan.Components
{
    public class AkSpotReflector : AkComponent
    {
        public AuxBus reflectAuxBus;
        public AcousticTexture acousticTexture;
        [Range(0, 1)]
        public float reflectionLevel = 1f;
        //[Range(0, 1)]
        //public float diffractionLevel = 1f;
        [Range(0, 4)]
        public float distanceScalingFactor = 1f;

        private ulong _roomID;
        private uint _imageSourceID;
        private AkImageSourceSettings _sourceSettings;

        private static readonly List<AkSpotReflector> _instances = new List<AkSpotReflector>();

        private void OnEnable()
        {
            _instances.Add(this);
            
            var position = transform.position;
            var room = SpatialAudioManager.FindRoomAtPosition(position);
            _roomID = room ? room.GetID() : AkRoom.INVALID_ROOM_ID;
            
            _sourceSettings = new AkImageSourceSettings();
            _sourceSettings.params_ = new AkImageSourceParams(position, distanceScalingFactor, reflectionLevel);
            // _sourceSettings.params_.sourcePosition = position;
            // _sourceSettings.params_.fLevel = reflectionLevel;
            // _sourceSettings.params_.fDiffraction = diffractionLevel;
            // _sourceSettings.params_.fDistanceScalingFactor = distanceScalingFactor;
            _sourceSettings.SetName(gameObject.name);
            if (acousticTexture != null)
                _sourceSettings.SetOneTexture(acousticTexture.Id);

            _imageSourceID = (uint) AkSoundEngine.GetAkGameObjectID(gameObject);
        }

        private void OnDisable()
        {
            _instances.Remove(this);
        }

        public static void SetSpotReflectors(AkGameObj emitter)
        {
            AkSoundEngine.ClearImageSources(AkSoundEngine.AK_INVALID_AUX_ID, emitter.gameObject);
            
            foreach (var reflector in _instances)
            {
                reflector.SetSpotReflector(emitter);
            }
        }

        private void SetSpotReflector(AkGameObj emitter)
        {
            if (reflectAuxBus == null)
                return;
            
            AkSoundEngine.SetImageSource(_imageSourceID, _sourceSettings, reflectAuxBus.Id, _roomID, emitter.gameObject);
        }

        private void OnDrawGizmos()
        {
            //throw new NotImplementedException();
        }

        public override bool IsValid()
        {
            return reflectAuxBus.IsValid();
        }
    }
}