namespace ShengShengBuXi.ConsoleApp.Services;

/// <summary>
/// 音频文件服务实现
/// </summary>
public class AudioFileService : IAudioFileService
{
    private readonly SemaphoreSlim _fileLock = new(1, 1);
    
    /// <summary>
    /// 更新音频文件
    /// </summary>
    /// <param name="fileName">文件名</param>
    /// <param name="fileData">文件数据</param>
    public async Task UpdateAudioFileAsync(string fileName, byte[] fileData)
    {
        if (string.IsNullOrEmpty(fileName) || fileData == null || fileData.Length == 0)
        {
            Console.WriteLine("音频文件名为空或文件数据为空");
            return;
        }

        // 获取文件的完整路径
        string filePath = Path.Combine(
            Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "mp3"), 
            fileName);

        await _fileLock.WaitAsync();
        try
        {
            // 确保目录存在
            string directory = Path.GetDirectoryName(filePath) ?? string.Empty;
            if (!string.IsNullOrEmpty(directory) && !Directory.Exists(directory))
            {
                Directory.CreateDirectory(directory);
            }

            // 写入文件
            await File.WriteAllBytesAsync(filePath, fileData);
            Console.WriteLine($"已更新音频文件: {fileName}");
        }
        catch (Exception ex)
        {
            Console.WriteLine($"更新音频文件失败: {ex.Message}");
        }
        finally
        {
            _fileLock.Release();
        }
    }

    /// <summary>
    /// 确保音频文件目录存在
    /// </summary>
    /// <param name="basePath">基础路径</param>
    public void EnsureAudioDirectoryExists(string basePath)
    {
        string fullPath = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, basePath);
        if (!Directory.Exists(fullPath))
        {
            try
            {
                Directory.CreateDirectory(fullPath);
                Console.WriteLine($"已创建音频目录: {fullPath}");
            }
            catch (Exception ex)
            {
                Console.WriteLine($"创建音频目录失败: {ex.Message}");
                throw new DirectoryNotFoundException($"无法创建音频目录: {fullPath}", ex);
            }
        }
    }
}