using UnityEngine;
using System.Collections.Generic;

public class AudioManager : MonoBehaviour
{
    public static AudioManager Instance;

    [System.Serializable]
    public class Sound
    {
        public string name;
        public AudioClip clip;
    }

    public List<Sound> sounds = new List<Sound>();

    private Dictionary<string, AudioClip> soundDict;
    private AudioSource sfxSource;
    public AudioClip[] enemyHitSounds;

    public AudioClip[] walkSteps;
    public AudioClip[] runSteps;

    void Awake()
    {
        sfxSource = gameObject.AddComponent<AudioSource>();

        sfxSource.spatialBlend = 0f; // 2D sound (no distance)
        sfxSource.volume = 1f;
        sfxSource.playOnAwake = false;
        // Singleton
        if (Instance == null)
        {
            Instance = this;
            //DontDestroyOnLoad(gameObject);
        }
        else
        {
            Destroy(gameObject);
            return;
        }

        // AudioSource
        sfxSource = gameObject.AddComponent<AudioSource>();

        // Convert list -> dictionary (fast lookup)
        soundDict = new Dictionary<string, AudioClip>();

        foreach (var s in sounds)
        {
            soundDict[s.name] = s.clip;
        }
    }

    //  Play simple SFX
    public void PlaySFX(string name)
    {
        if (soundDict.TryGetValue(name, out AudioClip clip))
        {
            sfxSource.pitch = Random.Range(0.95f, 1.05f);
            sfxSource.volume = 1f; //  force max
            sfxSource.PlayOneShot(clip, 1f); // second param = volume scale
        }
    }

    //  Play at position (for hits, explosions)
    public void PlaySFXAtPoint(string name, Vector3 position)
    {
        if (soundDict.TryGetValue(name, out AudioClip clip))
        {
            AudioSource.PlayClipAtPoint(clip, position);
        }
    }

    public void PlayEnemyHit()
    {
        if (enemyHitSounds == null || enemyHitSounds.Length == 0) return;

        AudioClip clip = enemyHitSounds[Random.Range(0, enemyHitSounds.Length)];

        sfxSource.pitch = Random.Range(0.95f, 1.05f); // variation
        sfxSource.PlayOneShot(clip);
    }

    public void PlayFootstep(bool isRunning)
    {
        if ((isRunning && runSteps.Length == 0) || (!isRunning && walkSteps.Length == 0))
            return;

        AudioClip clip = isRunning
            ? runSteps[Random.Range(0, runSteps.Length)]
            : walkSteps[Random.Range(0, walkSteps.Length)];

        sfxSource.pitch = Random.Range(0.95f, 1.05f);

        // slightly louder for clarity
        float volume = isRunning ? 1f : 0.8f;

        sfxSource.PlayOneShot(clip, volume);
    }
}