/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.apache.myfaces.extensions.scripting.scanningcore.engine.compiler;

import org.apache.commons.io.FilenameUtils;
import org.junit.Test;
import org.apache.myfaces.extensions.scripting.core.api.Configuration;
import org.apache.myfaces.extensions.scripting.core.api.ScriptingConst;
import org.apache.myfaces.extensions.scripting.core.api.WeavingContext;
import org.apache.myfaces.extensions.scripting.core.common.util.FileUtils;
import org.apache.myfaces.extensions.scripting.core.engine.FactoryEngines;
import org.apache.myfaces.extensions.scripting.core.engine.api.CompilationException;
import org.apache.myfaces.extensions.scripting.core.engine.api.CompilationResult;
import org.apache.myfaces.extensions.scripting.core.engine.compiler.JSR199Compiler;

import java.io.File;
import java.io.IOException;

import static org.junit.Assert.assertTrue;

/**
 * @author Werner Punz (latest modification by $Author$)
 * @version $Revision$ $Date$
 */

public class JavaCompilerTest
{
    private static final String PROBE1 = "../../src/test/resources/compiler/TestProbe1.java";
    private static final String PROBE2 = "../../src/test/resources/compiler/TestProbe2.java";
    private static final String RESOURCES = "../../src/test/resources/";

    File probe1;
    File probe2;
    File root;

    private static final String RESULT_HAS_NO_ERRORS = "result has no errors";
    private static final String TARGET_DIR_EXISTS = "targetDir exists files are compiled into the targetDir";
    private static final String CLASSFILE1_IS_COMPILED = "Classfile1 is compiled into the targetDir";
    private static final String CLASSFILE1_IS_COMPILED1 = "Classfile1 is compiled into the target";
    private static final String CLASSFILE2_IS_COMPILED = "Classfile2 is compiled into the target";

    public JavaCompilerTest()
    {
        try
        {
            FactoryEngines.getInstance().init();
        }
        catch (IOException e)
        {
            e.printStackTrace();
        }
        //we use a location relative to our current root one to reach the sources
        //because the test also has to be performed outside of maven
        //and the ide cannot cope with resource paths for now
        ClassLoader loader = Thread.currentThread().getContextClassLoader();

        String currentPath = loader.getResource("./").getPath();
        String sourcePath1 = currentPath + PROBE1;
        String sourcePath2 = currentPath + PROBE2;
        String rootPath = currentPath + RESOURCES;

        sourcePath1 = FilenameUtils.normalize(sourcePath1);
        sourcePath2 = FilenameUtils.normalize(sourcePath2);
        rootPath = FilenameUtils.normalize(rootPath);

        probe1 = new File(sourcePath1);
        probe2 = new File(sourcePath2);
        root = new File(rootPath);

        WeavingContext.getInstance().setConfiguration(new Configuration());
        WeavingContext.getInstance().getConfiguration().addSourceDir(ScriptingConst.ENGINE_TYPE_JSF_JAVA,
                root.getAbsolutePath());

    }

    @Test
    public void testFullCompileWhitelist()
    {
        JSR199Compiler compiler = new JSR199Compiler();

        File targetDir = null;

        File target = WeavingContext.getInstance().getConfiguration().getCompileTarget();
        ClassLoader loader = Thread.currentThread().getContextClassLoader();
        target.mkdirs();
        target.deleteOnExit();

        WeavingContext.getInstance().getConfiguration().addWhitelistPackage("compiler.myPackage");

        CompilationResult result = null;

        result = compiler.compile(root, target, loader);

        assertTrue(RESULT_HAS_NO_ERRORS, !result.hasErrors());

        assertTrue("target exists files are compiled into the target", target != null);
        File classFile1 = new File(target.getAbsolutePath() + "/compiler/TestProbe1.class");
        File classFile2 = new File(target.getAbsolutePath() + "/compiler/TestProbe2.class");
        File classFile3 = new File(target.getAbsolutePath() + "/compiler/myPackage/WhiteListedProbe.class");

        assertTrue(CLASSFILE1_IS_COMPILED1, !classFile1.exists());
        assertTrue(CLASSFILE2_IS_COMPILED, !classFile2.exists());
        assertTrue(CLASSFILE2_IS_COMPILED, classFile3.exists());
        classFile3.delete();
        WeavingContext.getInstance().getConfiguration().getCompileTarget().delete();
        WeavingContext.getInstance().getConfiguration().getCompileTarget().mkdirs();
    }

    @Test
    public void testFullCompile()
    {
        JSR199Compiler compiler = new JSR199Compiler();
        File targetDir = null;

        File target = FileUtils.getTempDir();
        ClassLoader loader = Thread.currentThread().getContextClassLoader();

        target.mkdirs();
        target.deleteOnExit();

        CompilationResult result = null;
        result = compiler.compile(root, target, loader);

        assertTrue(RESULT_HAS_NO_ERRORS, !result.hasErrors());

        assertTrue(TARGET_DIR_EXISTS, target != null);
        File classFile1 = new File(target.getAbsolutePath() + "/compiler/TestProbe1.class");
        File classFile2 = new File(target.getAbsolutePath() + "/compiler/TestProbe2.class");

        assertTrue(CLASSFILE1_IS_COMPILED1, classFile1.exists());
        assertTrue(CLASSFILE2_IS_COMPILED, classFile2.exists());
        classFile1.delete();
        classFile2.delete();
        WeavingContext.getInstance().getConfiguration().getCompileTarget().delete();
        WeavingContext.getInstance().getConfiguration().getCompileTarget().mkdirs();
        //testFullCompileWhitelist();
    }

}