/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

package monogram.plugin;

import java.io.File;
import java.io.IOException;
import java.util.UUID;
import org.fuin.utils4j.Utils4J;
import monogram.restorer.XMLRestorer;
import util.FileUtil;

/**
 *
 * @author OEM
 */
public class PluginDOCX implements Plugin {

    private File tmpdir;

    public PluginDOCX(File tmpdir) {
        this.tmpdir = tmpdir;
    }

    public File run(PluginConfiguration configuration) throws Exception {
        //Create a directory to store the unzipped file.
        File unzipDir = createTmpDirectoryInTmp();
        //Unzip the file in the directory.
        Utils4J.unzip(configuration.getFile(), unzipDir);
        
        //Restore the document.xml file.
        File documentIn = new File(unzipDir, "word" + File.separator + "document.xml");
        File documentOut = new File(unzipDir, "word" + File.separator + "mi-tmp-document.xml");
        XMLRestorer restorer = new XMLRestorer();

        restorer.restore
        (
            documentIn,
            "utf-8",
            documentOut,
            configuration.getPreserveExistingMacrons(),
            configuration.getMarkupChangedWords()
        );

        //Delete the old document.xml and rename the restored document.
        documentIn.delete();
        documentOut.renameTo(new File(unzipDir.getCanonicalPath() + File.separator + "word" + File.separator + "document.xml"));

        //Create a file to store the zipped file.
        File zipFile = File.createTempFile("mi-tmp-", configuration.getFileType(), tmpdir);
        //Zip the file.
        Utils4J.zipDir(unzipDir, null, zipFile);
        //Delete zip directory.
        if (unzipDir.getName().startsWith("mi-tmp-")) {
            FileUtil.deleteFile(unzipDir);
        }
        return zipFile;
    }

    private File createTmpDirectoryInTmp() throws IOException {
        final int maxAttempts = 10;
        int attempt = 0;
        do {
            String random = UUID.randomUUID().toString();
            File dir = new File(tmpdir + File.separator + "mi-tmp-" + random);
            if (! dir.exists() && dir.mkdir()) {
                System.out.println("PluginDOCX::createTmpDirectoryInTmp(): " + dir.getCanonicalPath());
                return dir;
            }
        } while (++attempt < maxAttempts);
        throw new IOException("Cound not create temp directory.");
    }
}