namespace EnvelopeGenerator.Service;

/// <summary>
/// Service-level temp file management. Mirrors <c>TempFiles.vb</c> from the legacy project.
/// Manages <c>%TEMP%\EnvelopeGenerator</c> at host startup and shutdown.
/// 
/// NOTE: This is independent from <c>EnvelopeGenerator.CommonServices.TempFiles</c>, which is
/// instantiated inside each Quartz job via <see cref="DigitalData.Modules.Logging.LogConfig"/>.
/// Do not confuse the two.
/// </summary>
public sealed class TempFiles
{
    private readonly ILogger<TempFiles> _logger;

    public string TempPath { get; }

    public TempFiles(ILogger<TempFiles> logger)
    {
        _logger = logger;
        TempPath = Path.Combine(Path.GetTempPath(), "EnvelopeGenerator");
    }

    public bool Create()
    {
        try
        {
            if (!Directory.Exists(TempPath))
            {
                Directory.CreateDirectory(TempPath);
            }
            else
            {
                CleanUpFiles();
            }

            return true;
        }
        catch (Exception ex)
        {
            _logger.LogError(ex, "Failed to create temp directory: {TempPath}", TempPath);
            return false;
        }
    }

    private void CleanUpFiles()
    {
        try
        {
            foreach (var file in Directory.GetFiles(TempPath))
            {
                _logger.LogDebug("Deleting temp file: {File}", file);
                File.Delete(file);
            }
        }
        catch (Exception ex)
        {
            _logger.LogError(ex, "Failed to clean up temp files in: {TempPath}", TempPath);
        }
    }

    public bool CleanUp()
    {
        try
        {
            _logger.LogDebug("Deleting temp directory: {TempPath}", TempPath);
            Directory.Delete(TempPath, recursive: true);
            return true;
        }
        catch (Exception ex)
        {
            _logger.LogError(ex, "Failed to delete temp directory: {TempPath}", TempPath);
            return false;
        }
    }
}