using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
using UnityEngine.Audio;

public class SoundManager : MonoBehaviour {

    public AudioMixer audioMixer;

    float masterVol;
    float musicVol;
    float sfxVol;

    [SerializeField]Slider masterSlider;
    [SerializeField]Slider musicSlider;
    [SerializeField]Slider sfxSlider;


    void Awake() {

        masterVol = PlayerPrefs.GetFloat("MasterVolume", masterSlider.maxValue);
        musicVol = PlayerPrefs.GetFloat("MusicVolume", musicSlider.maxValue);
        sfxVol = PlayerPrefs.GetFloat("SFXVolume", sfxSlider.maxValue);

        masterSlider.value = masterVol;
        musicSlider.value = musicVol;
        sfxSlider.value = sfxVol;

        masterSlider.onValueChanged.AddListener((float _) => SetMasterVolume(_));
        musicSlider.onValueChanged.AddListener((float _) => SetMusicVolume(_));
        sfxSlider.onValueChanged.AddListener((float _) => SetSFXVolume(_));
    }

    void Start() {
        SetMasterVolume(masterVol);
        SetMusicVolume(musicVol);
        SetSFXVolume(sfxVol);
    }

    public void PlaySound(AudioSource source, bool randomPitch=false, bool createTempSourceIfBusy=true, bool createTempSource = false, float delay = 0f) {
        if (source == null || !source.gameObject.activeInHierarchy) {
            return;
        }

        if (source.isPlaying) {
            if (createTempSourceIfBusy) {
                if (randomPitch) {
                    source.pitch = Random.Range(0.9f, 1.1f);
                }
                StartCoroutine(CreateTempSource(source, delay:delay));
            }
        } else {
            if (randomPitch) {
                source.pitch = Random.Range(0.9f, 1.1f);
            }

            if(createTempSource) {
                StartCoroutine(CreateTempSource(source, delay: delay));
            } else {
                if(delay > 0f) {
                    StartCoroutine(DelayedPlaySound(source, delay));
                } else {
                    source.Play();
                }
            }
        }
    }

    public void PlaySound(AudioSource source, AudioClip[] possibleClips, bool randomPitch=false, bool createTempSourceIfBusy=true, bool createTempSource=false, float delay=0f) {
        if(source == null || ! source.gameObject.activeInHierarchy || possibleClips.Length == 0) {
            return;
        }
        source.clip = possibleClips[Random.Range(0, possibleClips.Length)];
        PlaySound(source, randomPitch, createTempSourceIfBusy, createTempSource, delay);
    }

    IEnumerator CreateTempSource(AudioSource refSource, float delay=0f) {
        AudioSource newSource = refSource.gameObject.AddComponent<AudioSource>();
        newSource.volume = refSource.volume;
        newSource.clip = refSource.clip;
        newSource.spatialize = refSource.spatialize;
        newSource.spatialBlend = refSource.spatialBlend;

        PlaySound(newSource, delay:delay);

        yield return new WaitForSeconds(delay);

        // yield return new WaitForSeconds(1f);
        // Destroy(newSource);

        for(int i=0; i<100; ++i) {
            yield return new WaitForSeconds(1f);
            if(! newSource.isPlaying) {
                Destroy(newSource);
                break;
            }
        }
    }

    public void StopSound(AudioSource source) {
        source.Stop();
    }


    IEnumerator DelayedPlaySound(AudioSource source, float delay) {
        yield return new WaitForSeconds(delay);

        source.Play();
    }

    public void SetMasterVolume(float value) {
        // Slider should go from 0.0001 to 1
        
        masterVol = value;
        audioMixer.SetFloat("MasterVolume", Mathf.Log10(masterVol) * 20);
        PlayerPrefs.SetFloat("MasterVolume", masterVol);
    }

    public void SetMusicVolume(float value) {
        // Slider should go from 0.0001 to 1
        
        musicVol = value;
        audioMixer.SetFloat("MusicVolume", Mathf.Log10(musicVol) * 20);
        PlayerPrefs.SetFloat("MusicVolume", musicVol);
    }

    public void SetSFXVolume(float value) {
        // Slider should go from 0.0001 to 1

        sfxVol = value;
        audioMixer.SetFloat("SFXVolume", Mathf.Log10(sfxVol) * 20);
        PlayerPrefs.SetFloat("SFXVolume", sfxVol);
    }

    public float GetMasterVolume() {
        return masterVol;
    }

    public float GetMusicVolume() {
        return musicVol;
    }

    public float GetSFXVolume() {
        return sfxVol;
    }

}