/*
 * 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 com.google.common.collect.ImmutableList;
import org.sonar.check.Rule;
import org.sonar.plugins.java.api.IssuableSubscriptionVisitor;
import org.sonar.plugins.java.api.tree.AnnotationTree;
import org.sonar.plugins.java.api.tree.MethodTree;
import org.sonar.plugins.java.api.tree.Modifier;
import org.sonar.plugins.java.api.tree.Tree;

import java.util.List;

@Rule(key = "S2230")
public class TransactionalMethodVisibilityCheck extends IssuableSubscriptionVisitor {

  @Override
  public List<Tree.Kind> nodesToVisit() {
    return ImmutableList.of(Tree.Kind.METHOD);
  }

  @Override
  public void visitNode(Tree tree) {
    MethodTree method = (MethodTree) tree;
    boolean isPublic = method.modifiers().contains(Modifier.PUBLIC);
    if (hasSemantic()) {
      isPublic = method.symbol().isPublic();
    }
    if (!isPublic && hasTransactionalAnnotation(method)) {
      reportIssue(method.simpleName(), "Make this method \"public\" or remove the \"@Transactional\" annotation");
    }
  }

  private static boolean hasTransactionalAnnotation(MethodTree method) {
    for (AnnotationTree annotation : method.modifiers().annotations()) {
      if (annotation.symbolType().is("org.springframework.transaction.annotation.Transactional")) {
        return true;
      }
    }
    return false;
  }

}