using System.Collections;
using System.Collections.Generic;
using System.IO;
using UnityEngine;
using UnityEngine.Networking;
using UnityEngine.UI;

public class MusicLoader : MonoBehaviour
{
    public AudioSource audioSource;
    public Text txtPath;
    public RectTransform musicFileSelectionParent;
    public GameObject musicFileSelectionPrefab;
    public GameObject musicFilePanel;


    public static MusicLoader instance;

    void Awake(){
        instance= this;
    }

    public void ShowMusicFileSelection(){
        musicFilePanel.SetActive(true);
        PopulateMusicFileSelection();
    }
    
    public void OnFileSelected(string file, bool containsRoot = false){
        musicFilePanel.SetActive(false);
        LoadFile(containsRoot ? file : (Application.persistentDataPath + file));
    }


    public void LoadFile(string file){
        txtPath.text = file;
        if(file.Contains("\\")){
            txtPath.text = file.Replace("\\","/");
        }
        StartCoroutine(LoadAudioCoroutine(file));
    }

    private IEnumerator LoadAudioCoroutine(string fileName)
    {
        string filePath = Path.Combine(Application.persistentDataPath, fileName);
        string url = "file://" + filePath;

        UnityWebRequest www = UnityWebRequestMultimedia.GetAudioClip(url, AudioType.WAV); // Use AudioType.MPEG for MP3 files
        yield return www.SendWebRequest();

        if (www.result == UnityWebRequest.Result.ConnectionError || www.result == UnityWebRequest.Result.ProtocolError)
        {
            Debug.LogError(www.error);
        }
        else
        {
            AudioClip clip = DownloadHandlerAudioClip.GetContent(www);
            audioSource.clip = clip;
            AudioAnalyzer.instance.audioClip = clip;
            AudioAnalyzer.instance.updateData();
            //  audioSource.Play();
        }
    }


    void Start()
    {
        txtPath.text = Application.persistentDataPath;
        PopulateMusicFileSelection();
    }

    

    public void PopulateMusicFileSelection(){
        for(int i=0; i < musicFileSelectionParent.childCount; i++){

            Destroy(musicFileSelectionParent.GetChild(i).gameObject);
        }

        string[] files =Directory.GetFiles(Application.persistentDataPath);
        foreach(string file in files){
            if(!file.Contains(".wav")){continue;}

            GameObject newItem = Instantiate(musicFileSelectionPrefab, musicFileSelectionParent);
            newItem.AddComponent<OnMusicFileSelected>();
            newItem.GetComponentInChildren<Text>().text = file.Replace(Application.persistentDataPath, "");
        }

    }


    public void CopyDataPath(){
        GUIUtility.systemCopyBuffer = Application.persistentDataPath;
    }
}