using System;
using System.IO.Compression;
using FileCompression.Interfaces;
using FileCompression.Services.Strategies;

namespace FileCompression.Services.Composites;

public class TarCompressor : ICompressor
{

    private readonly string sourcePath;
    private readonly string destinationPath;
    private readonly StrategyContext strategyContext;
    private readonly string basePath;
    private readonly string tarPath;
    private ICompressor compressor;
    public TarCompressor(string sourcePath, string destinationPath, string basePath, StrategyContext strategyContext)
    {
        this.sourcePath = sourcePath;
        this.destinationPath = destinationPath;
        this.strategyContext = strategyContext;
        this.basePath = basePath;
        this.tarPath = destinationPath + ".tar";

        compressor = File.Exists(sourcePath) ? new FileCompressor(sourcePath, tarPath, basePath, strategyContext) : new FolderCompressor(sourcePath, tarPath, basePath, strategyContext);
    }
    public void Compress()
    {
        compressor.Compress();
        GZipCompress();
    }

    private void GZipCompress()
    {
        using (var fileStream = new FileStream(tarPath, FileMode.Open))
        using (var compressedFileStream = File.Create(destinationPath))
        using (var compressionStream = new GZipStream(compressedFileStream, CompressionLevel.Optimal))
        {
            fileStream.CopyTo(compressionStream);
        }
        File.Delete(tarPath);
    }
}