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/*
 * Copyright (c) MuleSoft, Inc.  All rights reserved.  http://www.mulesoft.com
 * The software in this package is published under the terms of the CPAL v1.0
 * license, a copy of which has been included with this distribution in the
 * LICENSE.txt file.
 */

package org.mule.module.launcher.nativelib;

import org.mule.util.SystemUtils;

import java.io.File;

/**
 * Finds native libraries in an application's lib folder
 */
public class PerAppNativeLibraryFinder implements NativeLibraryFinder
{

    public static final String DYLIB_EXTENSION = ".dylib";
    public static final String JNILIB_EXTENSION = ".jnilib";

    private final File libDir;

    public PerAppNativeLibraryFinder(File libDir)
    {
        this.libDir = libDir;
    }

    @Override
    public String findLibrary(String name, String libraryPath)
    {
        if (null == libraryPath)
        {
            libraryPath = findLibraryLocally(name);
        }

        return libraryPath;
    }

    protected String findLibraryLocally(String name)
    {
        String nativeLibName = System.mapLibraryName(name);
        File library = new File(libDir, nativeLibName);

        if (!library.exists() && SystemUtils.IS_OS_MAC)
        {
            nativeLibName = nativeLibName.replace(DYLIB_EXTENSION, JNILIB_EXTENSION);
            library = new File(libDir, nativeLibName);
        }

        if (library.exists())
        {
            return library.getAbsolutePath();
        }
        else
        {
            return null;
        }
    }
}