/*
 * 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.project;

import java.util.List;
import java.util.Objects;

import org.apache.maven.artifact.repository.ArtifactRepository;
import org.apache.maven.model.Model;
import org.apache.maven.model.building.AbstractModelBuildingListener;
import org.apache.maven.model.building.ModelBuildingEvent;
import org.apache.maven.model.building.ModelProblem.Severity;
import org.apache.maven.model.building.ModelProblem.Version;
import org.apache.maven.model.building.ModelProblemCollectorRequest;
import org.apache.maven.plugin.PluginManagerException;
import org.apache.maven.plugin.PluginResolutionException;
import org.apache.maven.plugin.version.PluginVersionResolutionException;

/**
 * Processes events from the model builder while building the effective model for a {@link MavenProject} instance.
 *
 * @author Benjamin Bentmann
 */
public class DefaultModelBuildingListener extends AbstractModelBuildingListener {

    private MavenProject project;

    private ProjectBuildingHelper projectBuildingHelper;

    private ProjectBuildingRequest projectBuildingRequest;

    private List<ArtifactRepository> remoteRepositories;

    private List<ArtifactRepository> pluginRepositories;

    public DefaultModelBuildingListener(
            MavenProject project,
            ProjectBuildingHelper projectBuildingHelper,
            ProjectBuildingRequest projectBuildingRequest) {
        this.project = Objects.requireNonNull(project, "project cannot be null");
        this.projectBuildingHelper =
                Objects.requireNonNull(projectBuildingHelper, "projectBuildingHelper cannot be null");
        this.projectBuildingRequest =
                Objects.requireNonNull(projectBuildingRequest, "projectBuildingRequest cannot be null");
        this.remoteRepositories = projectBuildingRequest.getRemoteRepositories();
        this.pluginRepositories = projectBuildingRequest.getPluginArtifactRepositories();
    }

    /**
     * Gets the project whose model is being built.
     *
     * @return The project, never {@code null}.
     */
    public MavenProject getProject() {
        return project;
    }

    @Override
    public void buildExtensionsAssembled(ModelBuildingEvent event) {
        Model model = event.getModel();

        try {
            pluginRepositories = projectBuildingHelper.createArtifactRepositories(
                    model.getPluginRepositories(), pluginRepositories, projectBuildingRequest);
        } catch (Exception e) {
            event.getProblems()
                    .add(new ModelProblemCollectorRequest(Severity.ERROR, Version.BASE)
                            .setMessage("Invalid plugin repository: " + e.getMessage())
                            .setException(e));
        }
        project.setPluginArtifactRepositories(pluginRepositories);

        if (event.getRequest().isProcessPlugins()) {
            try {
                ProjectRealmCache.CacheRecord record =
                        projectBuildingHelper.createProjectRealm(project, model, projectBuildingRequest);

                project.setClassRealm(record.getRealm());
                project.setExtensionDependencyFilter(record.getExtensionArtifactFilter());
            } catch (PluginResolutionException | PluginManagerException | PluginVersionResolutionException e) {
                event.getProblems()
                        .add(new ModelProblemCollectorRequest(Severity.ERROR, Version.BASE)
                                .setMessage("Unresolvable build extension: " + e.getMessage())
                                .setException(e));
            }

            projectBuildingHelper.selectProjectRealm(project);
        }

        // build the regular repos after extensions are loaded to allow for custom layouts
        try {
            remoteRepositories = projectBuildingHelper.createArtifactRepositories(
                    model.getRepositories(), remoteRepositories, projectBuildingRequest);
        } catch (Exception e) {
            event.getProblems()
                    .add(new ModelProblemCollectorRequest(Severity.ERROR, Version.BASE)
                            .setMessage("Invalid artifact repository: " + e.getMessage())
                            .setException(e));
        }
        project.setRemoteArtifactRepositories(remoteRepositories);
    }
}
