/*
 * 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.report.projectinfo;

import java.util.List;
import java.util.Locale;

import org.apache.maven.artifact.repository.ArtifactRepository;
import org.apache.maven.doxia.sink.Sink;
import org.apache.maven.doxia.tools.SiteTool;
import org.apache.maven.plugin.logging.Log;
import org.apache.maven.plugins.annotations.Mojo;
import org.apache.maven.project.MavenProject;
import org.apache.maven.project.ProjectBuilder;
import org.codehaus.plexus.i18n.I18N;

/**
 * Generates the Project Index report.
 *
 * @author <a href="mailto:brett@apache.org">Brett Porter </a>
 * @author <a href="mailto:vincent.siveton@gmail.com">Vincent Siveton </a>
 * @since 2.0
 */
@Mojo(name = "index")
public class IndexReport extends AbstractProjectInfoReport {
    // ----------------------------------------------------------------------
    // Public methods
    // ----------------------------------------------------------------------

    @Override
    public String getName(Locale locale) {
        return getI18nString(locale, "title");
    }

    @Override
    public String getDescription(Locale locale) {
        String desc;
        if (project.getDescription() != null) {
            // TODO How to handle i18n?
            desc = project.getDescription();
        } else {
            return getI18nString(locale, "nodescription");
        }
        return desc;
    }

    @Override
    public void executeReport(Locale locale) {
        ProjectIndexRenderer r = new ProjectIndexRenderer(
                project,
                getReactorProjects(),
                projectBuilder,
                localRepository,
                getName(locale),
                getDescription(locale),
                getSink(),
                getI18N(locale),
                locale,
                getLog(),
                siteTool);

        r.render();
    }

    /** {@inheritDoc} */
    public String getOutputName() {
        return "index";
    }

    @Override
    protected String getI18Nsection() {
        return "index";
    }

    // ----------------------------------------------------------------------
    // Private
    // ----------------------------------------------------------------------

    /**
     * Internal renderer class
     */
    private static class ProjectIndexRenderer extends ModulesReport.ModulesRenderer {
        private final String title;

        private final String description;

        private boolean modules = false;

        ProjectIndexRenderer(
                MavenProject project,
                List<MavenProject> reactorProjects,
                ProjectBuilder projectBuilder,
                ArtifactRepository localRepository,
                String title,
                String description,
                Sink sink,
                I18N i18n,
                Locale locale,
                Log log,
                SiteTool siteTool) {
            super(sink, project, reactorProjects, projectBuilder, localRepository, i18n, locale, log, siteTool);

            this.title = title;

            this.description = description;
        }

        @Override
        public String getTitle() {
            return modules ? super.getTitle() : title;
        }

        @Override
        protected void renderBody() {
            startSection(title.trim() + " " + project.getName());

            paragraph(description);

            if (!project.getModel().getModules().isEmpty()) {
                modules = true;
                super.renderBody();
            }

            endSection();
        }
    }
}