/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.apache.commons.vfs2.provider.ftp;

import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;

import org.apache.commons.vfs2.Capability;
import org.apache.commons.vfs2.FileName;
import org.apache.commons.vfs2.FileSystem;
import org.apache.commons.vfs2.FileSystemConfigBuilder;
import org.apache.commons.vfs2.FileSystemException;
import org.apache.commons.vfs2.FileSystemOptions;
import org.apache.commons.vfs2.UserAuthenticationData;
import org.apache.commons.vfs2.provider.AbstractOriginatingFileProvider;
import org.apache.commons.vfs2.provider.GenericFileName;

/**
 * A provider for FTP file systems.
 */
public class FtpFileProvider extends AbstractOriginatingFileProvider {

    /**
     * File Entry Parser.
     */
    public static final String ATTR_FILE_ENTRY_PARSER = "FEP";

    /**
     * Authenticator types.
     */
    public static final UserAuthenticationData.Type[] AUTHENTICATOR_TYPES = new UserAuthenticationData.Type[] {
            UserAuthenticationData.USERNAME, UserAuthenticationData.PASSWORD };

    static final Collection<Capability> CAPABILITIES = Collections
        .unmodifiableCollection(Arrays.asList(Capability.CREATE, Capability.DELETE, Capability.RENAME,
            Capability.GET_TYPE, Capability.LIST_CHILDREN, Capability.READ_CONTENT, Capability.GET_LAST_MODIFIED,
            Capability.URI, Capability.WRITE_CONTENT, Capability.APPEND_CONTENT, Capability.RANDOM_ACCESS_READ));

    /**
     * Constructs a new provider.
     */
    public FtpFileProvider() {
        setFileNameParser(FtpFileNameParser.getInstance());
    }

    /**
     * Creates the file system.
     */
    @Override
    protected FileSystem doCreateFileSystem(final FileName name, final FileSystemOptions fileSystemOptions)
            throws FileSystemException {
        // Create the file system
        final GenericFileName rootName = (GenericFileName) name;

        final FTPClientWrapper ftpClient = new FTPClientWrapper(rootName, fileSystemOptions);
        /*
         * FTPClient ftpClient = FtpClientFactory.createConnection(rootName.getHostName(), rootName.getPort(),
         * rootName.getUserName(), rootName.getPassword(), rootName.getPath(), fileSystemOptions);
         */

        return new FtpFileSystem(rootName, ftpClient, fileSystemOptions);
    }

    @Override
    public Collection<Capability> getCapabilities() {
        return CAPABILITIES;
    }

    @Override
    public FileSystemConfigBuilder getConfigBuilder() {
        return FtpFileSystemConfigBuilder.getInstance();
    }
}
