/*
    * Copyright (C) 2026 B3Partners B.V.
    *
    * SPDX-License-Identifier: MIT
    */
   package org.tailormap.api.service;
   
   import java.io.File;
   import java.io.IOException;
  import java.lang.invoke.MethodHandles;
  import java.nio.file.Files;
  import java.nio.file.Path;
  import java.util.stream.Stream;
  import java.util.zip.ZipEntry;
  import java.util.zip.ZipOutputStream;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  import org.springframework.stereotype.Service;
  
  /** Service for zipping directories and other useful operations concerning zip files. */
  @Service
  public class ZipService {
    private static final Logger logger =
        LoggerFactory.getLogger(MethodHandles.lookup().lookupClass());
    /**
     * Zips the contents of a directory into a zip file.
     *
     * @param sourceDir the directory to zip
     * @param zipFile the resulting zip file
     * @throws IOException if an I/O error occurs
     */
    public void zipDirectory(Path sourceDir, Path zipFile) throws IOException {
      try (ZipOutputStream zos = new ZipOutputStream(Files.newOutputStream(zipFile));
          Stream<Path> pathStream = Files.walk(sourceDir)) {
        pathStream.filter(Files::isRegularFile).forEach(path -> {
          String entryName = sourceDir.relativize(path).toString().replace(File.separatorChar, '/');
          try {
            logger.trace("Adding file {} to zip {}", path, zipFile);
            zos.putNextEntry(new ZipEntry(entryName));
            Files.copy(path, zos);
            zos.closeEntry();
          } catch (IOException e) {
            throw new RuntimeException("Failed to add file to zip: " + path, e);
          }
        });
      } catch (RuntimeException e) {
        if (e.getCause() instanceof IOException ioException) {
          throw ioException;
        }
        throw e;
      }
    }
  }