/*

 * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

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 */

package anttasks;

import java.io.File;

import java.util.ArrayList;

import java.util.Arrays;

import java.util.List;

import propertiesparser.PropertiesParser;

import propertiesparser.gen.ClassGenerator;

import org.apache.tools.ant.BuildException;

import org.apache.tools.ant.DirectoryScanner;

import org.apache.tools.ant.Project;

import org.apache.tools.ant.taskdefs.MatchingTask;

import org.apache.tools.ant.types.Path;

import org.apache.tools.ant.types.Resource;

public class PropertiesParserTask extends MatchingTask {

    public void addSrc(Path src) {

        if (srcDirs == null)

            srcDirs = new Path(getProject());

        srcDirs.add(src);

    }

    public void setDestDir(File destDir) {

        this.destDir = destDir;

    }

    @Override

    public void execute() {

        List<String> mainOpts = new ArrayList<String>();

        int count = 0;

        for (String dir : srcDirs.list()) {

            File baseDir = getProject().resolveFile(dir);

            DirectoryScanner s = getDirectoryScanner(baseDir);

            for (String path : s.getIncludedFiles()) {

                if (path.endsWith(".properties")) {

                    File srcFile = new File(baseDir, path);

                    String destPath =

                            path.substring(0, path.lastIndexOf(File.separator) + 1) +

                                    ClassGenerator.toplevelName(srcFile) + ".java";

                    File destFile = new File(this.destDir, destPath);

                    File destDir = destFile.getParentFile();

                    // Arguably, the comparison in the next line should be ">", not ">="

                    // but that assumes the resolution of the last modified time is fine

                    // grained enough; in practice, it is better to use ">=".

                    if (destFile.exists() && destFile.lastModified() >= srcFile.lastModified())

                        continue;

                    destDir.mkdirs();

                    mainOpts.add("-compile");

                    mainOpts.add(srcFile.getPath());

                    mainOpts.add(destDir.getPath());

                    count++;

                }

            }

        }

        if (mainOpts.size() > 0) {

            log("Generating " + count + " resource files to " + destDir, Project.MSG_INFO);

            PropertiesParser pp = new PropertiesParser(msg -> log(msg, Project.MSG_INFO));

            boolean ok = pp.run(mainOpts.toArray(new String[mainOpts.size()]));

            if (!ok)

                throw new BuildException("PropertiesParser failed.");

        }

    }

    private Path srcDirs;

    private File destDir;

}