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/*
 * SonarQube
 * Copyright (C) 2009-2017 SonarSource SA
 * mailto:info 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.server.favorite.ws;

import java.util.function.Consumer;
import org.sonar.api.server.ws.Request;
import org.sonar.api.server.ws.Response;
import org.sonar.api.server.ws.WebService;
import org.sonar.api.web.UserRole;
import org.sonar.db.DbClient;
import org.sonar.db.DbSession;
import org.sonar.db.component.ComponentDto;
import org.sonar.server.component.ComponentFinder;
import org.sonar.server.favorite.FavoriteUpdater;
import org.sonar.server.user.UserSession;
import org.sonar.server.ws.KeyExamples;

import static org.sonarqube.ws.client.favorite.FavoritesWsParameters.PARAM_COMPONENT;

public class AddAction implements FavoritesWsAction {
  private final UserSession userSession;
  private final DbClient dbClient;
  private final FavoriteUpdater favoriteUpdater;
  private final ComponentFinder componentFinder;

  public AddAction(UserSession userSession, DbClient dbClient, FavoriteUpdater favoriteUpdater, ComponentFinder componentFinder) {
    this.userSession = userSession;
    this.dbClient = dbClient;
    this.favoriteUpdater = favoriteUpdater;
    this.componentFinder = componentFinder;
  }

  @Override
  public void define(WebService.NewController context) {
    WebService.NewAction action = context.createAction("add")
      .setDescription("Add a component (project, directory, file etc.) as favorite for the authenticated user.
" +
        "Requires authentication and the following permission: 'Browse' on the project of the specified component.")
      .setSince("6.3")
      .setPost(true)
      .setHandler(this);

    action.createParam("component")
      .setDescription("Component key")
      .setRequired(true)
      .setExampleValue(KeyExamples.KEY_FILE_EXAMPLE_001);
  }

  @Override
  public void handle(Request request, Response response) throws Exception {
    addFavorite().accept(request);
    response.noContent();
  }

  private Consumer addFavorite() {
    return request -> {
      try (DbSession dbSession = dbClient.openSession(false)) {
        ComponentDto componentDto = componentFinder.getByKey(dbSession, request.mandatoryParam(PARAM_COMPONENT));
        userSession
          .checkLoggedIn()
          .checkComponentPermission(UserRole.USER, componentDto);
        favoriteUpdater.add(dbSession, componentDto, userSession.isLoggedIn() ? userSession.getUserId() : null);
        dbSession.commit();
      }
    };
  }
}