/*
    * #%L
    * Native ARchive plugin for Maven
    * %%
    * Copyright (C) 2002 - 2014 NAR Maven Plugin developers.
    * %%
    * 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.
   * #L%
   */
  package com.github.maven_nar;
  
  import java.io.File;
  
  import org.apache.maven.plugin.MojoExecutionException;
  import org.apache.maven.plugin.MojoFailureException;
  import org.apache.maven.plugins.annotations.LifecyclePhase;
  import org.apache.maven.plugins.annotations.Mojo;
  import org.apache.maven.plugins.annotations.Parameter;
  import org.apache.maven.shared.artifact.filter.collection.ScopeFilter;
  
  /**
   * Validates the configuration of the NAR project (aol and pom)
   *
   * @author Mark Donszelmann
   */
  @Mojo(name = "nar-validate", defaultPhase = LifecyclePhase.VALIDATE)
  public class NarValidateMojo extends AbstractCompileMojo {
    /**
     * Source directory for GNU style project
     */
    @Parameter(defaultValue = "${basedir}/src/gnu", required = true)
    private File gnuSourceDirectory;
  
    @Override
    protected ScopeFilter/* <Artifact> */getArtifactScopeFilter() {
      return null;
    }
  
    @Override
    public final void narExecute() throws MojoExecutionException, MojoFailureException {
      // super.narExecute();
      if (this.skip) {
        getLog().info(getClass().getName() + " skipped");
        return;
      }
      
      // check aol
      final AOL aol = getAOL();
      getLog().info("Using AOL: " + aol);
  
      // check linker exists in retrieving the version number
      final Linker linker = getLinker();
      getLog().debug("Using linker version: " + linker.getVersion(this));
  
      // check compilers
      int noOfCompilers = 0;
      if (this.onlySpecifiedCompilers) {
        if (getCpp() != null && getCpp().getName() != null) {
          noOfCompilers++;
          // need includes
          if (getCpp().getIncludes(Compiler.MAIN).isEmpty()) {
            throw new MojoExecutionException("No includes defined for compiler " + getCpp().getName());
          }
        }
  
        if (getC() != null && getC().getName() != null) {
          noOfCompilers++;
          // need includes
          if (getC().getIncludes(Compiler.MAIN).isEmpty()) {
            throw new MojoExecutionException("No includes defined for compiler " + getC().getName());
          }
        }
  
        if (getFortran() != null && getFortran().getName() != null) {
          noOfCompilers++;
          // need includes
          if (getFortran().getIncludes(Compiler.MAIN).isEmpty()) {
            throw new MojoExecutionException("No includes defined for compiler " + getFortran().getName());
          }
        }
  
        // at least one compiler has to be defined
        // OR
        // a <gnuSourceDirectory> is configured.
        if (noOfCompilers == 0 && (this.gnuSourceDirectory == null || !this.gnuSourceDirectory.exists())) {
          throw new MojoExecutionException("No compilers defined for linker " + linker.getName() + ", and no"
              + " <gnuSourceDirectory> is defined.  Either define a compiler or a linker.");
        }
      }
   }
 }