using System;
using System.Collections.Generic;
using System.Linq;
using FMOD.Studio;
using FMODUnity;
using UnityEngine;

public class MusicControll : MonoBehaviour
{
    private static MusicControll instance;
    [Range(0f, 1f)] [SerializeField] private float volume = 1f;
    [SerializeField] private EventReference musicClip;
    public List<NpcCombatAbstract> npcCombats;
    public TypeMusic typeMusicCache = TypeMusic.None;
    private EventInstance eventInstance;

    private float oldVolume = -1;
    
    public enum TypeMusic
    {
        None = -1,
        Ambient = 0,
        Combat = 1,
    }
    
    private void Awake()
    {
        instance = this;
        npcCombats = new List<NpcCombatAbstract>();
        eventInstance = RuntimeManager.CreateInstance(musicClip);
        eventInstance.start();
        if(Math.Abs(volume - oldVolume) > 0.01f)
        {
            oldVolume = volume;
            eventInstance.setVolume(volume);
        }
    }

    public static void Register(NpcCombatAbstract npc)
    {
        if (instance == null) return;
        if (!instance.npcCombats.Contains(npc)) instance.npcCombats.Add(npc);
    }

    public static void UnRegister(NpcCombatAbstract npc)
    {
        if (instance == null) return;
        if (instance.npcCombats.Contains(npc)) instance.npcCombats.Remove(npc);
    }

    private void Update()
    {
        if(npcCombats == null)
        {
            return;
        }
        
        var isCombat = npcCombats.Any(x => x.IsCombat);

        var typeMusic = isCombat ? TypeMusic.Combat : TypeMusic.Ambient;
        if(typeMusicCache != typeMusic)
        {
            typeMusicCache = typeMusic;
            eventInstance.setParameterByName("Music", (int)typeMusic, true);
        }
        
        if(Math.Abs(volume - oldVolume) > 0.01f)
        {
            oldVolume = volume;
            eventInstance.setVolume(volume);
        }
    }
}