CloudSlang/cs-actions

/*
 * Copyright 2020-2024 Open Text
 * This program and the accompanying materials
 * are made available under the terms of the Apache License v2.0 which accompany this distribution.
 *
 * The Apache License is available 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 io.cloudslang.content.filesystem.utils;

import io.cloudslang.content.filesystem.constants.ExceptionMsgs;
import org.apache.commons.lang3.StringUtils;

import java.io.File;

public final class InputBuilderUtils {

    public static String buildSource(String source) throws Exception {
        File f = new File(source);

        if (StringUtils.isEmpty(source)) {
            throw new Exception(ExceptionMsgs.EMPTY_SOURCE);
        }
        if (!(f.isAbsolute())) {
            throw new Exception(ExceptionMsgs.INVALID_ABSOLUTE_PATH);
        }

        if (!f.getCanonicalPath().equals(f.getAbsolutePath())) {
            throw new Exception(ExceptionMsgs.DIRECTORY_TRAVERSAL);
        } else {
            if (!(f.exists())) {
                throw new Exception(String.format(ExceptionMsgs.DOES_NOT_EXIST, source));
            }
        }
        return source;
    }

    public static long buildThreshold(String threshold) throws Exception {
        long thresholdLong;
        if (StringUtils.isEmpty(threshold))
            throw new Exception(ExceptionMsgs.EMPTY_THRESHOLD);
        try {
            thresholdLong = Long.parseLong(threshold);
            if(thresholdLong < 0)
                Integer.parseInt("justToThrowException");
        } catch (NumberFormatException ex) {
            throw new Exception(ExceptionMsgs.INVALID_THRESHOLD);
        }
        return thresholdLong;
    }
}