/**
 *    Copyright 2006-2017 the original author or authors.
 *
 *    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.mybatis.generator.internal;

import static org.mybatis.generator.internal.util.messages.Messages.getString;

import java.io.File;
import java.util.StringTokenizer;

import org.mybatis.generator.api.ShellCallback;
import org.mybatis.generator.exception.ShellException;

/**
 * The Class DefaultShellCallback.
 *
 * @author Jeff Butler
 */
public class DefaultShellCallback implements ShellCallback {
    
    /** The overwrite. */
    private boolean overwrite;

    /**
     * Instantiates a new default shell callback.
     *
     * @param overwrite
     *            the overwrite
     */
    public DefaultShellCallback(boolean overwrite) {
        super();
        this.overwrite = overwrite;
    }

    /* (non-Javadoc)
     * @see org.mybatis.generator.api.ShellCallback#getDirectory(java.lang.String, java.lang.String)
     */
    public File getDirectory(String targetProject, String targetPackage)
            throws ShellException {
        // targetProject is interpreted as a directory that must exist
        //
        // targetPackage is interpreted as a sub directory, but in package
        // format (with dots instead of slashes). The sub directory will be
        // created
        // if it does not already exist

        File project = new File(targetProject);
        if (!project.isDirectory()) {
            throw new ShellException(getString("Warning.9", //$NON-NLS-1$
                    targetProject));
        }

        StringBuilder sb = new StringBuilder();
        StringTokenizer st = new StringTokenizer(targetPackage, "."); //$NON-NLS-1$
        while (st.hasMoreTokens()) {
            sb.append(st.nextToken());
            sb.append(File.separatorChar);
        }

        File directory = new File(project, sb.toString());
        if (!directory.isDirectory()) {
            boolean rc = directory.mkdirs();
            if (!rc) {
                throw new ShellException(getString("Warning.10", //$NON-NLS-1$
                        directory.getAbsolutePath()));
            }
        }

        return directory;
    }

    /* (non-Javadoc)
     * @see org.mybatis.generator.api.ShellCallback#refreshProject(java.lang.String)
     */
    public void refreshProject(String project) {
        // nothing to do in the default shell callback
    }

    /* (non-Javadoc)
     * @see org.mybatis.generator.api.ShellCallback#isMergeSupported()
     */
    public boolean isMergeSupported() {
        return false;
    }

    /* (non-Javadoc)
     * @see org.mybatis.generator.api.ShellCallback#isOverwriteEnabled()
     */
    public boolean isOverwriteEnabled() {
        return overwrite;
    }

    /* (non-Javadoc)
     * @see org.mybatis.generator.api.ShellCallback#mergeJavaFile(java.lang.String, java.lang.String, java.lang.String[], java.lang.String)
     */
    public String mergeJavaFile(String newFileSource,
            String existingFileFullPath, String[] javadocTags, String fileEncoding)
            throws ShellException {
        throw new UnsupportedOperationException();
    }
}
