/*
 * Copyright 2013 Andriy Vityuk
 *
 * Licensed 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 com.vityuk.ginger.maven;

import org.apache.maven.artifact.DependencyResolutionRequiredException;
import org.apache.maven.plugin.MojoExecutionException;
import org.apache.maven.project.MavenProject;

import java.io.File;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashSet;
import java.util.List;
import java.util.Set;

public class ClasspathUtils {

    private ClasspathUtils() {
    }

    public  static List<URL> getResources(MavenProject project) throws MojoExecutionException {
        return getResources(project, false);
    }

    public static List<URL> getResources(MavenProject project, boolean testClasspath) throws MojoExecutionException {
        try {
            Set<String> classpathElements = new HashSet<String>();
            classpathElements.addAll(project.getCompileClasspathElements());
            classpathElements.addAll(project.getRuntimeClasspathElements());
            if (testClasspath) {
                classpathElements.addAll(project.getTestClasspathElements());
            }
            List<URL> projectClasspathList = new ArrayList<URL>();
            for (String element : classpathElements) {
                try {
                    projectClasspathList.add(new File(element).toURI().toURL());
                } catch (MalformedURLException e) {
                    throw new MojoExecutionException(element + " is an invalid classpath element", e);
                }
            }
            URL[] urls = projectClasspathList.toArray(new URL[projectClasspathList.size()]);
            return Arrays.asList(urls);
        } catch (DependencyResolutionRequiredException e) {
            throw new MojoExecutionException("Dependency resolution failed", e);
        }
    }

}