/**
 *
 * Copyright 2004 The Apache Software Foundation
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.codehaus.plexus.archiver;

import java.io.File;
import java.io.IOException;
import java.nio.charset.Charset;
import java.nio.file.attribute.FileTime;
import java.util.Comparator;
import java.util.Date;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;

import javax.annotation.Nonnull;
import org.codehaus.plexus.components.io.resources.PlexusIoResource;
import org.codehaus.plexus.components.io.resources.PlexusIoResourceCollection;

public interface Archiver
{

    /**
     * Default value for the dirmode attribute.
     */
    int DEFAULT_DIR_MODE = UnixStat.DIR_FLAG | UnixStat.DEFAULT_DIR_PERM;

    /**
     * Default value for the filemode attribute.
     */
    int DEFAULT_FILE_MODE = UnixStat.FILE_FLAG | UnixStat.DEFAULT_FILE_PERM;

    /**
     * Default value for the symlinkmode attribute.
     */
    int DEFAULT_SYMLILNK_MODE = UnixStat.LINK_FLAG | UnixStat.DEFAULT_LINK_PERM;

    String DUPLICATES_ADD = "add";

    String DUPLICATES_PRESERVE = "preserve";

    String DUPLICATES_SKIP = "skip";

    String DUPLICATES_FAIL = "fail";

    Set<String> DUPLICATES_VALID_BEHAVIORS = new HashSet<String>()
    {

        private static final long serialVersionUID = 1L;


        {
            add( DUPLICATES_ADD );
            add( DUPLICATES_PRESERVE );
            add( DUPLICATES_SKIP );
            add( DUPLICATES_FAIL );
        }

    };

    void createArchive()
        throws ArchiverException, IOException;

    /**
     * Obsolete, use {@link #addFileSet(FileSet)}.
     *
     * @deprecated Will go away in next major version
     */
    @Deprecated
    void addDirectory( @Nonnull File directory )
        throws ArchiverException;

    /**
     * Obsolete, use {@link #addFileSet(FileSet)}.
     *
     * @deprecated Will go away in next major version
     */
    @Deprecated
    void addDirectory( @Nonnull File directory, String prefix )
        throws ArchiverException;

    /**
     * Obsolete, use {@link #addFileSet(FileSet)}.
     *
     * @deprecated Will go away in next major version
     */
    @Deprecated
    void addDirectory( @Nonnull File directory, String[] includes, String[] excludes )
        throws ArchiverException;

    /**
     * Obsolete, use {@link #addFileSet(FileSet)}.
     *
     * @deprecated Will go away in next major version
     */
    @Deprecated
    void addDirectory( @Nonnull File directory, String prefix, String[] includes, String[] excludes )
        throws ArchiverException;

    /**
     * Adds the given file set to the archive. This method is basically obsoleting {@link #addDirectory(File)},
     * {@link #addDirectory(File, String)}, {@link #addDirectory(File, String[], String[])}, and
     * {@link #addDirectory(File, String, String[], String[])}. However, as these methods are in widespread use, they
     * cannot easily be deprecated.
     *
     * @throws ArchiverException
     * Adding the file set failed.
     * @since 1.0-alpha-9
     */
    void addFileSet( @Nonnull FileSet fileSet )
        throws ArchiverException;

    void addSymlink( String symlinkName, String symlinkDestination )
        throws ArchiverException;

    void addSymlink( String symlinkName, int permissions, String symlinkDestination )
        throws ArchiverException;

    void addFile( @Nonnull File inputFile, @Nonnull String destFileName )
        throws ArchiverException;

    void addFile( @Nonnull File inputFile, @Nonnull String destFileName, int permissions )
        throws ArchiverException;

    /**
     * Obsolete, use {@link #addArchivedFileSet(ArchivedFileSet)}.
     *
     * @deprecated Will go away in next major version
     */
    void addArchivedFileSet( @Nonnull File archiveFile )
        throws ArchiverException;

    /**
     * Obsolete, use {@link #addArchivedFileSet(ArchivedFileSet)}.
     *
     * @deprecated Will go away in next major version
     */
    @Deprecated
    void addArchivedFileSet( @Nonnull File archiveFile, String prefix )
        throws ArchiverException;

    /**
     * Obsolete, use {@link #addArchivedFileSet(ArchivedFileSet)}.
     *
     * @deprecated Will go away in next major version
     */
    @Deprecated
    void addArchivedFileSet( File archiveFile, String[] includes, String[] excludes )
        throws ArchiverException;

    /**
     * Obsolete, use {@link #addArchivedFileSet(ArchivedFileSet)}.
     *
     * @deprecated Will go away in next major version
     */
    @Deprecated
    void addArchivedFileSet( @Nonnull File archiveFile, String prefix, String[] includes, String[] excludes )
        throws ArchiverException;

    /**
     * Adds the given archive file set to the archive. This method is basically obsoleting
     * {@link #addArchivedFileSet(File)}, {@link #addArchivedFileSet(File, String[], String[])}, and
     * {@link #addArchivedFileSet(File, String, String[], String[])}. However, as these methods are in widespread use,
     * they cannot easily be deprecated.
     *
     * Stream transformers are supported on this method
     *
     * @since 1.0-alpha-9
     */
    void addArchivedFileSet( ArchivedFileSet fileSet )
        throws ArchiverException;

    /**
     * Adds the given archive file set to the archive. This method is basically obsoleting
     * {@link #addArchivedFileSet(File)}, {@link #addArchivedFileSet(File, String[], String[])}, and
     * {@link #addArchivedFileSet(File, String, String[], String[])}. However, as these methods are in widespread use,
     * they cannot easily be deprecated.
     *
     * @param charset the encoding to use, particularly useful to specific non-standard filename encodings
     * for some kinds of archives (for instance zip files)
     *
     * Stream transformers are supported on this method
     *
     * @param fileSet the fileSet to add
     * @param charset
     *
     * @since 1.0-alpha-9
     */
    void addArchivedFileSet( ArchivedFileSet fileSet, Charset charset )
        throws ArchiverException;

    /**
     * Adds the given resource collection to the archive.
     *
     * Stream transformers are *not* supported on this method
     *
     * @since 1.0-alpha-10
     */
    void addResource( PlexusIoResource resource, String destFileName, int permissions )
        throws ArchiverException;

    /**
     * Adds the given resource collection to the archive.
     *
     * Stream transformers are supported on this method
     *
     * @since 1.0-alpha-10
     */
    void addResources( PlexusIoResourceCollection resources )
        throws ArchiverException;

    File getDestFile();

    void setDestFile( File destFile );

    void setFileMode( int mode );

    int getFileMode();

    int getOverrideFileMode();

    void setDefaultFileMode( int mode );

    int getDefaultFileMode();

    /**
     * This is the forced mode that should be used regardless if set, otherwise falls back to default.
     *
     * @param mode
     */
    void setDirectoryMode( int mode );

    /**
     * Gets the forced mode for directories, falling back to default if none is forced.
     *
     * @return
     */
    int getDirectoryMode();

    int getOverrideDirectoryMode();

    /**
     * This is the "default" value we should use if no other value is specified
     *
     * @param mode
     */
    void setDefaultDirectoryMode( int mode );

    int getDefaultDirectoryMode();

    boolean getIncludeEmptyDirs();

    void setIncludeEmptyDirs( boolean includeEmptyDirs );

    void setDotFileDirectory( File dotFileDirectory );

    /**
     * Returns an iterator over instances of {@link ArchiveEntry}, which have previously been added by calls to
     * {@link #addResources(PlexusIoResourceCollection)}, {@link #addResource(PlexusIoResource, String, int)},
     * {@link #addFileSet(FileSet)}, etc.
     *
     * @since 1.0-alpha-10
     */
    @Nonnull
    ResourceIterator getResources()
        throws ArchiverException;

    /**
     * @deprecated Use {@link #getResources()}
     */
    Map<String, ArchiveEntry> getFiles();

    /**
     * <p>
     * Returns, whether recreating the archive is forced (default). Setting this option to false means, that the
     * archiver should compare the timestamps of included files with the timestamp of the target archive and rebuild the
     * archive only, if the latter timestamp precedes the former timestamps. Checking for timestamps will typically
     * offer a performance gain (in particular, if the following steps in a build can be suppressed, if an archive isn't
     * recreated) on the cost that you get inaccurate results from time to time. In particular, removal of source files
     * won't be detected.
     * </p>
     * <p>
     * An archiver doesn't necessarily support checks for uptodate. If so, setting this option to true will simply be
     * ignored. The method {@link #isSupportingForced()} may be called to check whether an archiver does support
     * uptodate checks.
     * </p>
     *
     * @return true if the target archive should always be created; false otherwise
     *
     * @see #setForced(boolean)
     * @see #isSupportingForced()
     */
    boolean isForced();

    /**
     * <p>
     * Sets, whether recreating the archive is forced (default). Setting this option to false means, that the archiver
     * should compare the timestamps of included files with the timestamp of the target archive and rebuild the archive
     * only, if the latter timestamp precedes the former timestamps. Checking for timestamps will typically offer a
     * performance gain (in particular, if the following steps in a build can be suppressed, if an archive isn't
     * recreated) on the cost that you get inaccurate results from time to time. In particular, removal of source files
     * won't be detected.
     * </p>
     * <p>
     * An archiver doesn't necessarily support checks for uptodate. If so, setting this option to true will simply be
     * ignored. The method {@link #isSupportingForced()} may be called to check whether an archiver does support
     * uptodate checks.
     * </p>
     *
     * @param forced
     * true, if the target archive should always be created; false otherwise
     *
     * @see #isForced()
     * @see #isSupportingForced()
     */
    void setForced( boolean forced );

    /**
     * Returns, whether the archive supports uptodate checks. If so, you may set {@link #setForced(boolean)} to true.
     *
     * @return true, if the archiver does support uptodate checks, false otherwise
     *
     * @see #setForced(boolean)
     * @see #isForced()
     */
    boolean isSupportingForced();

    /**
     * Returns the behavior of this archiver when duplicate files are detected.
     */
    String getDuplicateBehavior();

    /**
     * Set the behavior of this archiver when duplicate files are detected. One of: <br>
     * <ul>
     * <li>add - Add the duplicates to the archive as duplicate entries</li>
     * <li>skip/preserve - Leave the first entry encountered in the archive, skip the new one</li>
     * <li>fail - throw an {@link ArchiverException}</li>
     * </ul>
     * <br>
     * See {@link Archiver#DUPLICATES_ADD}, {@link Archiver#DUPLICATES_SKIP}, {@link Archiver#DUPLICATES_PRESERVE},
     * {@link Archiver#DUPLICATES_FAIL}.
     */
    void setDuplicateBehavior( String duplicate );

    /**
     * to use or not the jvm method for file permissions: user all <b>not active for group permissions</b>
     *
     * @since 1.1
     * @param useJvmChmod
     * @deprecated this setting is now ignored. The jvm is always used.
     */
    @Deprecated
    void setUseJvmChmod( boolean useJvmChmod );

    /**
     *
     * @since 1.1
     * @return
     * @deprecated this setting is now ignored. The jvm is always used.
     */
    @Deprecated
    boolean isUseJvmChmod();

    /**
     * @since 1.1
     */
    boolean isIgnorePermissions();

    /**
     * @since 1.1
     */
    void setIgnorePermissions( final boolean ignorePermissions );

    /**
     * Define forced last modification date for entries (if non null).
     *
     * @param lastModifiedDate
     * @since 4.2.0
     * @deprecated Use {@link #setLastModifiedTime(FileTime)} instead
     */
    @Deprecated
    void setLastModifiedDate( final Date lastModifiedDate );

    /**
     * @since 4.2.0
     * @deprecated Use {@link #getLastModifiedTime()} instead
     */
    @Deprecated
    Date getLastModifiedDate();

    /**
     * Sets the last modification time of the entries (if non null).
     *
     * @param lastModifiedTime to set in the archive entries
     *
     * @see #getLastModifiedTime()
     * @since 4.3.0
     */
    void setLastModifiedTime( final FileTime lastModifiedTime );

    /**
     * Returns the last modification time of the archiver.
     *
     * @return The last modification time of the archiver, null if not specified
     *
     * @see #setLastModifiedTime(FileTime)
     * @since 4.3.0
     */
    FileTime getLastModifiedTime();

    /**
     * Set filename comparator, used to sort file entries when scanning directories since File.list() does not
     * guarantee any order.
     *
     * @since 4.2.0
     */
    void setFilenameComparator( Comparator<String> filenameComparator );

    /**
     * @since 4.2.0
     */
    void setOverrideUid( int uid );

    /**
     * @since 4.2.0
     */
    void setOverrideUserName( String userName );

    /**
     * @since 4.2.0
     */
    int getOverrideUid();

    /**
     * @since 4.2.0
     */
    String getOverrideUserName();

    /**
     * @since 4.2.0
     */
    void setOverrideGid( int gid );

    /**
     * @since 4.2.0
     */
    void setOverrideGroupName( String groupName );

    /**
     * @since 4.2.0
     */
    int getOverrideGid();

    /**
     * @since 4.2.0
     */
    String getOverrideGroupName();

    /**
     * This method is obsolete and will just call {@link #configureReproducibleBuild(FileTime)}
     * with the Date transformed into FileTime.
     *
     * @param lastModifiedDate the date to use for archive entries last modified time
     * @since 4.2.0
     * @deprecated Use {@link #configureReproducibleBuild(FileTime)} instead.
     */
    @Deprecated
    void configureReproducible( Date lastModifiedDate );

    /**
     * Configure the archiver to create archives in a reproducible way (see
     * <a href="https://reproducible-builds.org/">Reproducible Builds</a>).
     * <p>This will configure:
     * <ul>
     * <li>reproducible archive entries order,</li>
     * <li>defined entries timestamp</li>
     * <li>and reproducible entries Unix mode.</li>
     * </ul>
     *
     * @param lastModifiedTime The last modification time of the entries
     *
     * @see <a href="https://reproducible-builds.org/">Reproducible Builds</a>
     * @since 4.3.0
     */
    void configureReproducibleBuild( FileTime lastModifiedTime );
}
