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

public class SongDataLoader : MonoBehaviour
{
    private const string SecureCategory = "song_export";
    private string jsonDirectory;
    public List<SongDataSerializable> loadedSongs = new List<SongDataSerializable>();
    [SerializeField] private int _yieldEveryNFiles = 5;

    void Start()
    {
        jsonDirectory = Path.Combine(Application.persistentDataPath, "SongDataJson");
        StartCoroutine(LoadAllSongsFromJsonRoutine());
    }

    IEnumerator LoadAllSongsFromJsonRoutine()
    {
        List<string> loadedJsonList = SecureSaveVault.LoadAllRawJson(SecureCategory, jsonDirectory);
        if (loadedJsonList == null || loadedJsonList.Count == 0)
        {
            Debug.LogError("JSON 持久化数据不存在");
            yield break;
        }

        loadedSongs.Clear();
        int counter = 0;

        for (int i = 0; i < loadedJsonList.Count; i++)
        {
            string json = loadedJsonList[i];
            SongDataSerializable jsonData = JsonUtility.FromJson<SongDataSerializable>(json);
            loadedSongs.Add(jsonData);
            Debug.Log("Loaded persistent song data from secure vault.");
            counter++;
            if (_yieldEveryNFiles > 0 && counter % _yieldEveryNFiles == 0)
            {
                yield return null;
            }
        }
    }
}