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/**
 * Copyright 2010-2013 The Kuali Foundation
 *
 * Licensed under the Educational Community 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.opensource.org/licenses/ecl2.php
 *
 * 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.kuali.common.util.execute;

import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

import org.kuali.common.util.Assert;
import org.kuali.common.util.FileSystemUtils;
import org.kuali.common.util.SyncRequest;
import org.kuali.common.util.SyncResult;
import org.kuali.common.util.service.ScmService;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class SyncFilesExecutable implements Executable {

    private static final Logger logger = LoggerFactory.getLogger(SyncFilesExecutable.class);

    boolean skip;
    // Don't commit changes unless they specifically set this to true
    boolean commitChanges;
    ScmService service;
    String message = "Automated update";
    List requests;
    List commitPaths;

    @Override
    public void execute() {
        if (skip) {
            logger.info("Skipping file sync");
            return;
        }

        Assert.notNull(requests);
        Assert.notNull(service);
        Assert.notNull(commitPaths);

        List adds = new ArrayList();
        List deletes = new ArrayList();

        List results = syncFiles();
        for (SyncResult result : results) {
            adds.addAll(result.getAdds());
            deletes.addAll(result.getDeletes());
        }

        logger.info("---------- Sync results ----------");
        logger.info("Files added - {}", adds.size());
        logger.info("Files deleted - {}", deletes.size());
        logger.info("---------- Sync results ----------");

        if (commitChanges) {
            service.add(adds);
            service.delete(deletes);
            service.commit(commitPaths, message);
        } else {
            logger.info("Skipping SCM commit");
        }
    }

    public List syncFiles() {
        logger.info("Syncing {} requests", requests.size());
        try {
            return FileSystemUtils.syncFiles(requests);
        } catch (IOException e) {
            throw new IllegalStateException("Unexpected IO error", e);
        }
    }

    public boolean isSkip() {
        return skip;
    }

    public void setSkip(boolean skip) {
        this.skip = skip;
    }

    public ScmService getService() {
        return service;
    }

    public void setService(ScmService service) {
        this.service = service;
    }

    public String getMessage() {
        return message;
    }

    public void setMessage(String message) {
        this.message = message;
    }

    public boolean isCommitChanges() {
        return commitChanges;
    }

    public void setCommitChanges(boolean commitChanges) {
        this.commitChanges = commitChanges;
    }

    public List getCommitPaths() {
        return commitPaths;
    }

    public void setCommitPaths(List commitPaths) {
        this.commitPaths = commitPaths;
    }

    public List getRequests() {
        return requests;
    }

    public void setRequests(List requests) {
        this.requests = requests;
    }
}