/*
 * 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.maven.configuration;

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

import org.codehaus.plexus.PlexusTestCase;
import org.codehaus.plexus.util.xml.Xpp3Dom;
import org.codehaus.plexus.util.xml.Xpp3DomBuilder;
import org.codehaus.plexus.util.xml.pull.XmlPullParserException;

/**
 * @author Benjamin Bentmann
 */
public class DefaultBeanConfiguratorTest extends PlexusTestCase {

    private BeanConfigurator configurator;

    @Override
    protected void setUp() throws Exception {
        super.setUp();

        configurator = lookup(BeanConfigurator.class);
    }

    @Override
    protected void tearDown() throws Exception {
        configurator = null;

        super.tearDown();
    }

    private Xpp3Dom toConfig(String xml) {
        try {
            return Xpp3DomBuilder.build(new StringReader("<configuration>" + xml + "</configuration>"));
        } catch (XmlPullParserException | IOException e) {
            throw new IllegalArgumentException(e);
        }
    }

    public void testMinimal() throws BeanConfigurationException {
        SomeBean bean = new SomeBean();

        Xpp3Dom config = toConfig("<file>test</file>");

        DefaultBeanConfigurationRequest request = new DefaultBeanConfigurationRequest();
        request.setBean(bean).setConfiguration(config);

        configurator.configureBean(request);

        assertEquals(new File("test"), bean.file);
    }

    public void testPreAndPostProcessing() throws BeanConfigurationException {
        SomeBean bean = new SomeBean();

        Xpp3Dom config = toConfig("<file>${test}</file>");

        BeanConfigurationValuePreprocessor preprocessor = new BeanConfigurationValuePreprocessor() {
            public Object preprocessValue(String value, Class<?> type) throws BeanConfigurationException {
                if (value != null && value.startsWith("${") && value.endsWith("}")) {
                    return value.substring(2, value.length() - 1);
                }
                return value;
            }
        };

        BeanConfigurationPathTranslator translator = new BeanConfigurationPathTranslator() {
            public File translatePath(File path) {
                return new File("base", path.getPath()).getAbsoluteFile();
            }
        };

        DefaultBeanConfigurationRequest request = new DefaultBeanConfigurationRequest();
        request.setBean(bean).setConfiguration(config);
        request.setValuePreprocessor(preprocessor).setPathTranslator(translator);

        configurator.configureBean(request);

        assertEquals(new File("base/test").getAbsoluteFile(), bean.file);
    }

    public void testChildConfigurationElement() throws BeanConfigurationException {
        SomeBean bean = new SomeBean();

        Xpp3Dom config = toConfig("<wrapper><file>test</file></wrapper>");

        DefaultBeanConfigurationRequest request = new DefaultBeanConfigurationRequest();
        request.setBean(bean).setConfiguration(config, "wrapper");

        configurator.configureBean(request);

        assertEquals(new File("test"), bean.file);
    }

    static class SomeBean {

        File file;
    }
}
