/*
 * ====================================================================
 * 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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 *
 */

import org.gradle.api.Project

class Mvn {

    final Project project
    final File mvnHomeDir

    Mvn(final Project project, File mvnHomeDir) {
        this.project = project
        this.mvnHomeDir = mvnHomeDir
    }

    void exec(File mvnProjectDir, String... params) {
        project.javaexec {
            classpath "${mvnHomeDir}/boot/plexus-classworlds-2.4.jar"
            jvmArgs "-Dclassworlds.conf=${mvnHomeDir}/bin/m2.conf", "-Xmx256m", '-XX:PermSize=128m',
                    "-Dmaven.home=${mvnHomeDir}"
            main = "org.codehaus.plexus.classworlds.launcher.Launcher"
            workingDir = mvnProjectDir
            args params
        }
    }

    static Pom parsePom(File dir) {
        File pomFile = new File(dir, 'pom.xml')
        def pomModel = new XmlSlurper().parse(pomFile)
        def el = pomModel['parent']
        PomArtifact pomParent = el ? new PomArtifact(
                el.groupId.text(),
                el.artifactId.text(),
                el.version.text()) : null
        PomArtifact artifact = new PomArtifact(
                pomModel.groupId.text(),
                pomModel.artifactId.text(),
                pomModel.version.text())
        String name = pomModel.name

        List<PomModule> modules = new ArrayList<>();
        pomModel.modules.module.each { module ->

            File modulePomFile = new File(new File(dir, module.text()), 'pom.xml')
            def modulePomModel = new XmlSlurper().parse(modulePomFile)
            PomArtifact moduleArtifact = new PomArtifact(
                    artifact.groupId ? artifact.groupId : pomParent.groupId,
                    modulePomModel.artifactId.text(),
                    artifact.version)
            PomModule pomModule = new PomModule(module.text(), moduleArtifact)
            modules.add(pomModule)
        }
        new Pom(name, pomParent, artifact, modules)
    }

}