/*
 * 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.util.Objects;

import org.apache.maven.model.Build;
import org.apache.maven.model.Model;
import org.apache.maven.model.Plugin;
import org.apache.maven.model.PluginExecution;
import org.apache.maven.model.PluginManagement;
import org.codehaus.plexus.util.StringUtils;

/**
 * A basic bean configuration request.
 *
 * @author Benjamin Bentmann
 */
public class DefaultBeanConfigurationRequest implements BeanConfigurationRequest {

    private Object bean;

    private Object configuration;

    private String configurationElement;

    private ClassLoader classLoader;

    private BeanConfigurationValuePreprocessor valuePreprocessor;

    private BeanConfigurationPathTranslator pathTranslator;

    public Object getBean() {
        return bean;
    }

    public DefaultBeanConfigurationRequest setBean(Object bean) {
        this.bean = bean;
        return this;
    }

    public Object getConfiguration() {
        return configuration;
    }

    public String getConfigurationElement() {
        return configurationElement;
    }

    public DefaultBeanConfigurationRequest setConfiguration(Object configuration) {
        return setConfiguration(configuration, null);
    }

    public DefaultBeanConfigurationRequest setConfiguration(Object configuration, String element) {
        this.configuration = configuration;
        this.configurationElement = element;
        return this;
    }

    /**
     * Sets the configuration to the configuration taken from the specified build plugin in the POM. First, the build
     * plugins will be searched for the specified plugin, if that fails, the plugin management section will be searched.
     *
     * @param model The POM to extract the plugin configuration from, may be {@code null}.
     * @param pluginGroupId The group id of the plugin whose configuration should be used, must not be {@code null} or
     *            empty.
     * @param pluginArtifactId The artifact id of the plugin whose configuration should be used, must not be
     *            {@code null} or empty.
     * @param pluginExecutionId The id of a plugin execution whose configuration should be used, may be {@code null} or
     *            empty to use the general plugin configuration.
     * @return This request for chaining, never {@code null}.
     */
    public DefaultBeanConfigurationRequest setConfiguration(
            Model model, String pluginGroupId, String pluginArtifactId, String pluginExecutionId) {
        Plugin plugin = findPlugin(model, pluginGroupId, pluginArtifactId);
        if (plugin != null) {
            if (StringUtils.isNotEmpty(pluginExecutionId)) {
                for (PluginExecution execution : plugin.getExecutions()) {
                    if (pluginExecutionId.equals(execution.getId())) {
                        setConfiguration(execution.getConfiguration());
                        break;
                    }
                }
            } else {
                setConfiguration(plugin.getConfiguration());
            }
        }
        return this;
    }

    private static final String GROUP_ID_ERROR_MESSAGE = "groupId can neither be null, empty, nor blank";
    private static final String ARTIFACT_ID_ERROR_MESSAGE = "artifactId can neither be null, empty, nor blank";

    private Plugin findPlugin(Model model, String groupId, String artifactId) {
        if (Objects.requireNonNull(groupId, GROUP_ID_ERROR_MESSAGE).trim().isEmpty()) {
            throw new IllegalArgumentException(GROUP_ID_ERROR_MESSAGE);
        }
        if (Objects.requireNonNull(artifactId, ARTIFACT_ID_ERROR_MESSAGE).trim().isEmpty()) {
            throw new IllegalArgumentException(ARTIFACT_ID_ERROR_MESSAGE);
        }

        if (model != null) {
            Build build = model.getBuild();
            if (build != null) {
                for (Plugin plugin : build.getPlugins()) {
                    if (groupId.equals(plugin.getGroupId()) && artifactId.equals(plugin.getArtifactId())) {
                        return plugin;
                    }
                }

                PluginManagement mgmt = build.getPluginManagement();
                if (mgmt != null) {
                    for (Plugin plugin : mgmt.getPlugins()) {
                        if (groupId.equals(plugin.getGroupId()) && artifactId.equals(plugin.getArtifactId())) {
                            return plugin;
                        }
                    }
                }
            }
        }

        return null;
    }

    public ClassLoader getClassLoader() {
        return classLoader;
    }

    public DefaultBeanConfigurationRequest setClassLoader(ClassLoader classLoader) {
        this.classLoader = classLoader;
        return this;
    }

    public BeanConfigurationValuePreprocessor getValuePreprocessor() {
        return valuePreprocessor;
    }

    public DefaultBeanConfigurationRequest setValuePreprocessor(BeanConfigurationValuePreprocessor valuePreprocessor) {
        this.valuePreprocessor = valuePreprocessor;
        return this;
    }

    public BeanConfigurationPathTranslator getPathTranslator() {
        return pathTranslator;
    }

    public DefaultBeanConfigurationRequest setPathTranslator(BeanConfigurationPathTranslator pathTranslator) {
        this.pathTranslator = pathTranslator;
        return this;
    }
}
