using System.Collections.Generic;
using UnityEngine;

namespace HutongGames.PlayMaker.Actions
{
    [ActionCategory(ActionCategory.Audio)]
    [Tooltip("Plays a Random Audio Clip at a position defined by a Game Object or a Vector3. If a position is defined, it takes priority over the game object. You can set the relative weight of the clips to control how often they are selected.")]
    public class PlayRandomSound : FsmStateAction
    {
        public FsmOwnerDefault gameObject;
        public FsmVector3 position;
        [CompoundArray("Audio Clips", "Audio Clip", "Weight")]
        [ObjectType(typeof(AudioClip))]
        public FsmObject[] audioClips;
        [HasFloatSlider(0, 1)]
        public FsmFloat[] weights;
        [HasFloatSlider(0, 1)]
        public FsmFloat volume = 1f;

        public override void Reset()
        {
            gameObject = null;
            position = new FsmVector3 { UseVariable = true };
            weights = new FsmFloat[] {1,1,1};
            audioClips = new FsmObject[3];
            volume = 1;
        }

        public override void OnEnter()
        {
            DoPlayRandomClip();

            Finish();
        }

        void DoPlayRandomClip()
        {
            if (audioClips.Length == 0) return;

            int randomIndex = ActionHelpers.GetRandomWeightedIndex(weights);

            if (randomIndex != -1)
            {
                AudioClip clip = audioClips[randomIndex].Value as AudioClip;
                if (clip != null)
                {
                    if (!position.IsNone)
                    {
                        AudioSource.PlayClipAtPoint(clip, position.Value, volume.Value);
                    }
                    else
                    {
                        GameObject go = Fsm.GetOwnerDefaultTarget(gameObject);
                        if (go == null) return;

                        AudioSource.PlayClipAtPoint(clip, go.transform.position, volume.Value);
                    }
                }
            }
        }
    }
}