/**
 * Licensed to jclouds, Inc. (jclouds) under one or more
 * contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  jclouds 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.jclouds.filesystem.predicates.validators.internal;

import java.io.File;

import org.jclouds.filesystem.predicates.validators.FilesystemBlobKeyValidator;

import com.google.inject.Singleton;

/**
 * Validates name for filesystem container blob keys implementation
 *
 * @see org.jclouds.rest.InputParamValidator
 * @see org.jclouds.predicates.Validator
 *
 * @author Alfredo "Rainbowbreeze" Morresi
 */
@Singleton
public class FilesystemBlobKeyValidatorImpl extends FilesystemBlobKeyValidator {

    @Override
    public void validate(String name) throws IllegalArgumentException {
        //blob key cannot be null or empty
        if (name == null || name.length() < 1)
            throw new IllegalArgumentException("Blob key can't be null or empty");

        //blobkey cannot start with / (or \ in Windows) character
        if (name.startsWith(File.separator))
            throw new IllegalArgumentException(String.format(
                    "Blob key '%s' cannot start with character %s", name, File.separator));

        //blobkey cannot end with / (or \ in Windows) character
        if (name.endsWith(File.separator))
            throw new IllegalArgumentException(String.format(
                    "Blob key '%s' cannot end with character %s", name, File.separator));
    }

}
