devonfw / IDEasy / 12749906073

package com.devonfw.tools.ide.io;

import java.nio.file.Path;

import java.nio.file.attribute.PosixFilePermission;

import java.util.List;

import java.util.Set;

import java.util.function.Consumer;

import java.util.function.Function;

import java.util.function.Predicate;

/**

 * Interface that gives access to various operations on files.

 */

public interface FileAccess {

  /** {@link PosixFilePermission}s for "rwxr-xr-x" or 0755. */

      PosixFilePermission.GROUP_READ, PosixFilePermission.GROUP_EXECUTE, PosixFilePermission.OTHERS_READ, PosixFilePermission.OTHERS_EXECUTE);

  /**

   * Downloads a file from an arbitrary location.

   *

   * @param url the location of the binary file to download. May also be a local or remote path to copy from.

   * @param targetFile the {@link Path} to the target file to download to. Should not already exist. Missing parent directories will be created

   *     automatically.

   */

  void download(String url, Path targetFile);

  /**

   * Creates the entire {@link Path} as directories if not already existing.

   *

   * @param directory the {@link Path} to {@link java.nio.file.Files#createDirectories(Path, java.nio.file.attribute.FileAttribute...) create}.

   */

  void mkdirs(Path directory);

  /**

   * @param file the {@link Path} to check.

   * @return {@code true} if the given {@code file} points to an existing file, {@code false} otherwise (the given {@link Path} does not exist or is a

   *     directory).

   */

  boolean isFile(Path file);

  /**

   * @param folder the {@link Path} to check.

   * @return {@code true} if the given {@code folder} points to an existing directory, {@code false} otherwise (a warning is logged in this case).

   */

  boolean isExpectedFolder(Path folder);

  /**

   * @param file the {@link Path} to compute the checksum of.

   * @return the computed checksum (SHA-266).

   */

  String checksum(Path file);

  /**

   * Moves the given {@link Path} to the backup.

   *

   * @param fileOrFolder the {@link Path} to move to the backup (soft-deletion).

   */

  void backup(Path fileOrFolder);

  /**

   * @param source the source {@link Path file or folder} to move.

   * @param targetDir the {@link Path} with the directory to move {@code source} into.

   */

  void move(Path source, Path targetDir);

  /**

   * Creates a symbolic link. If the given {@code targetLink} already exists and is a symbolic link or a Windows junction, it will be replaced. In case of

   * missing privileges, Windows Junctions may be used as fallback, which must point to absolute paths. Therefore, the created link will be absolute instead of

   * relative.

   *

   * @param source the source {@link Path} to link to, may be relative or absolute.

   * @param targetLink the {@link Path} where the symbolic link shall be created pointing to {@code source}.

   * @param relative - {@code true} if the symbolic link shall be relative, {@code false} if it shall be absolute.

   */

  void symlink(Path source, Path targetLink, boolean relative);

  /**

   * Creates a relative symbolic link. If the given {@code targetLink} already exists and is a symbolic link or a Windows junction, it will be replaced. In case

   * of missing privileges, Windows Junctions may be used as fallback, which must point to absolute paths. Therefore, the created link will be absolute instead

   * of relative.

   *

   * @param source the source {@link Path} to link to, may be relative or absolute.

   * @param targetLink the {@link Path} where the symbolic link shall be created pointing to {@code source}.

   */

  default void symlink(Path source, Path targetLink) {

  /**

   * @param source the source {@link Path file or folder} to copy.

   * @param target the {@link Path} to copy {@code source} to. See {@link #copy(Path, Path, FileCopyMode)} for details. Will always ensure that in the end

   *     you will find the same content of {@code source} in {@code target}.

   */

  default void copy(Path source, Path target) {

  /**

   * @param source the source {@link Path file or folder} to copy.

   * @param target the {@link Path} to copy {@code source} to. Unlike the Linux {@code cp} command this method will not take the filename of {@code source}

   *     and copy that to {@code target} in case that is an existing folder. Instead it will always be simple and stupid and just copy from {@code source} to

   *     {@code target}. Therefore the result is always clear and easy to predict and understand. Also you can easily rename a file to copy. While

   *     {@code cp my-file target} may lead to a different result than {@code cp my-file target/} this method will always ensure that in the end you will find

   *     the same content of {@code source} in {@code target}.

   * @param mode the {@link FileCopyMode}.

   */

  default void copy(Path source, Path target, FileCopyMode mode) {

  /**

   * @param source the source {@link Path file or folder} to copy.

   * @param target the {@link Path} to copy {@code source} to. Unlike the Linux {@code cp} command this method will not take the filename of {@code source}

   *     and copy that to {@code target} in case that is an existing folder. Instead it will always be simple and stupid and just copy from {@code source} to

   *     {@code target}. Therefore the result is always clear and easy to predict and understand. Also you can easily rename a file to copy. While

   *     {@code cp my-file target} may lead to a different result than {@code cp my-file target/} this method will always ensure that in the end you will find

   *     the same content of {@code source} in {@code target}.

   * @param mode the {@link FileCopyMode}.

   * @param listener the {@link PathCopyListener} that will be called for each copied {@link Path}.

   */

  void copy(Path source, Path target, FileCopyMode mode, PathCopyListener listener);

  /**

   * @param archiveFile the {@link Path} to the file to extract.

   * @param targetDir the {@link Path} to the directory where to extract the {@code archiveFile} to.

   */

  default void extract(Path archiveFile, Path targetDir) {

  /**

   * @param archiveFile the {@link Path} to the archive file to extract.

   * @param targetDir the {@link Path} to the directory where to extract the {@code archiveFile}.

   * @param postExtractHook the {@link Consumer} to be called after the extraction on the final folder before it is moved to {@code targetDir}.

   */

  default void extract(Path archiveFile, Path targetDir, Consumer<Path> postExtractHook) {

  /**

   * @param archiveFile the {@link Path} to the archive file to extract.

   * @param targetDir the {@link Path} to the directory where to extract the {@code archiveFile}.

   * @param postExtractHook the {@link Consumer} to be called after the extraction on the final folder before it is moved to {@code targetDir}.

   * @param extract {@code true} if the {@code archiveFile} should be extracted (default), {@code false} otherwise.

   */

  void extract(Path archiveFile, Path targetDir, Consumer<Path> postExtractHook, boolean extract);

  /**

   * Extracts a ZIP file what is the common archive format on Windows. Initially invented by PKZIP for MS-DOS and also famous from WinZIP software for Windows.

   *

   * @param file the ZIP file to extract.

   * @param targetDir the {@link Path} with the directory to unzip to.

   */

  void extractZip(Path file, Path targetDir);

  /**

   * @param file the ZIP file to extract.

   * @param targetDir the {@link Path} with the directory to unzip to.

   * @param compression the {@link TarCompression} to use.

   */

  void extractTar(Path file, Path targetDir, TarCompression compression);

  /**

   * @param file the JAR file to extract.

   * @param targetDir the {@link Path} with the directory to extract to.

   */

  void extractJar(Path file, Path targetDir);

  /**

   * Extracts an Apple DMG (Disk Image) file that is similar to an ISO image. DMG files are commonly used for software releases on MacOS. Double-clicking such

   * files on MacOS mounts them and show the application together with a symbolic link to the central applications folder and some help instructions. The user

   * then copies the application to the applications folder via drag and drop in order to perform the installation.

   *

   * @param file the DMG file to extract.

   * @param targetDir the target directory where to extract the contents to.

   */

  void extractDmg(Path file, Path targetDir);

  /**

   * Extracts an MSI (Microsoft Installer) file. MSI files are commonly used for software releases on Windows that allow an installation wizard and easy later

   * uninstallation.

   *

   * @param file the MSI file to extract.

   * @param targetDir the target directory where to extract the contents to.

   */

  void extractMsi(Path file, Path targetDir);

  /**

   * Extracts an Apple PKG (Package) file. PKG files are used instead of {@link #extractDmg(Path, Path) DMG files} if additional changes have to be performed

   * like drivers to be installed. Similar to what {@link #extractMsi(Path, Path) MSI} is on Windows. PKG files are internally a xar based archive with a

   * specific structure.

   *

   * @param file the PKG file to extract.

   * @param targetDir the target directory where to extract the contents to.

   */

  void extractPkg(Path file, Path targetDir);

  /**

   * @param path the {@link Path} to convert.

   * @return the absolute and physical {@link Path} (without symbolic links).

   */

  Path toRealPath(Path path);

  /**

   * Deletes the given {@link Path} idempotent and recursive.

   * <p>

   * ATTENTION: In most cases we want to use {@link #backup(Path)} instead to prevent the user from data loss.

   * </p>

   *

   * @param path the {@link Path} to delete.

   */

  void delete(Path path);

  /**

   * Creates a new temporary directory. ATTENTION: The user of this method is responsible to do house-keeping and {@link #delete(Path) delete} it after the work

   * is done.

   *

   * @param name the default name of the temporary directory to create. A prefix or suffix may be added to ensure uniqueness.

   * @return the {@link Path} to the newly created and unique temporary directory.

   */

  Path createTempDir(String name);

  /**

   * @param dir the folder to search.

   * @param filter the {@link Predicate} used to find the {@link Predicate#test(Object) match}.

   * @param recursive - {@code true} to search recursive in all sub-folders, {@code false} otherwise.

   * @return the first child {@link Path} matching the given {@link Predicate} or {@code null} if no match was found.

   */

  Path findFirst(Path dir, Predicate<Path> filter, boolean recursive);

  /**

   * @param dir the {@link Path} to the directory where to list the children.

   * @param filter the {@link Predicate} used to {@link Predicate#test(Object) decide} which children to include (if {@code true} is returned).

   * @return all children of the given {@link Path} that match the given {@link Predicate}. Will be the empty list of the given {@link Path} is not an existing

   *     directory.

   */

  default List<Path> listChildren(Path dir, Predicate<Path> filter) {

  }

  /**

   * @param dir the {@link Path} to the directory where to list the children.

   * @param filter the filter {@link Function} used to {@link Function#apply(Object) filter and transform} children to include. If the {@link Function}

   *     returns  {@code null}, the child will be filtered, otherwise the returned {@link Path} will be included in the resulting {@link List}.

   * @return all children of the given {@link Path} returned by the given {@link Function}. Will be the empty list of the given {@link Path} is not an existing

   *     directory.

   */

  List<Path> listChildrenMapped(Path dir, Function<Path, Path> filter);

  /**

   * Finds the existing file with the specified name in the given list of directories.

   *

   * @param fileName The name of the file to find.

   * @param searchDirs The list of directories to search for the file.

   * @return The {@code Path} of the existing file, or {@code null} if the file is not found.

   */

  Path findExistingFile(String fileName, List<Path> searchDirs);

  /**

   * Checks if the given directory is empty.

   *

   * @param dir The {@link Path} object representing the directory to check.

   * @return {@code true} if the directory is empty, {@code false} otherwise.

   */

  boolean isEmptyDir(Path dir);

  /**

   * Makes a file executable (analog to 'chmod a+x').

   *

   * @param file {@link Path} to the file.

   */

  default void makeExecutable(Path file) {

  /**

   * Makes a file executable (analog to 'chmod a+x').

   *

   * @param file {@link Path} to the file.

   * @param confirm - {@code true} to get user confirmation before adding missing executable flags, {@code false} otherwise (always set missing flags).

   */

  void makeExecutable(Path file, boolean confirm);

  /**

   * Like the linux touch command this method will update the modification time of the given {@link Path} to the current

   * {@link System#currentTimeMillis() system time}. In case the file does not exist, it will be created as empty file. If already the

   * {@link Path#getParent() parent folder} does not exist, the operation will fail.

   *

   * @param file the {@link Path} to the file or folder.

   */

  void touch(Path file);

}