/*
 * SonarQube Java
 * Copyright (C) 2012-2016 SonarSource SA
 * mailto:contact AT sonarsource DOT com
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 3 of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */
package org.sonar.java.checks;

import org.sonar.check.Rule;
import org.sonar.java.model.PackageUtils;
import org.sonar.plugins.java.api.JavaFileScanner;
import org.sonar.plugins.java.api.JavaFileScannerContext;
import org.sonar.plugins.java.api.tree.BaseTreeVisitor;
import org.sonar.plugins.java.api.tree.CompilationUnitTree;
import org.sonar.plugins.java.api.tree.PackageDeclarationTree;

import java.io.File;

@Rule(key = "S1598")
public class MismatchPackageDirectoryCheck extends BaseTreeVisitor implements JavaFileScanner {

  private JavaFileScannerContext context;

  @Override
  public void scanFile(JavaFileScannerContext context) {
    this.context = context;
    scan(context.getTree());
  }


  @Override
  public void visitCompilationUnit(CompilationUnitTree tree) {
    PackageDeclarationTree packageDeclaration = tree.packageDeclaration();
    if (packageDeclaration != null) {
      String packageName = PackageUtils.packageName(packageDeclaration, File.separator);
      File javaFile = context.getFile();
      String dir = javaFile.getParent();
      if (!dir.endsWith(packageName)) {
        context.reportIssue(
          this, packageDeclaration.packageName(), "This file \"" + javaFile.getName() + "\" should be located in \"" + packageName + "\" directory, not in \"" + dir + "\".");
      }
    }
  }

}