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/*
 * SonarQube
 * Copyright (C) 2009-2016 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.db.user;

import java.util.Collection;
import java.util.Date;
import java.util.List;
import java.util.Locale;
import javax.annotation.CheckForNull;
import javax.annotation.Nullable;
import org.apache.commons.lang.StringUtils;
import org.apache.ibatis.session.RowBounds;
import org.sonar.api.utils.System2;
import org.sonar.db.Dao;
import org.sonar.db.DatabaseUtils;
import org.sonar.db.DbSession;
import org.sonar.db.RowNotFoundException;
import org.sonar.db.WildcardPosition;

import static org.sonar.db.DatabaseUtils.executeLargeInputs;

public class GroupDao implements Dao {

  private System2 system;

  public GroupDao(System2 system) {
    this.system = system;
  }

  public GroupDto selectOrFailByName(DbSession session, String key) {
    GroupDto group = selectByName(session, key);
    if (group == null) {
      throw new RowNotFoundException(String.format("Could not find a group with name '%s'", key));
    }
    return group;
  }

  @CheckForNull
  public GroupDto selectByName(DbSession session, String key) {
    return mapper(session).selectByKey(key);
  }

  public List selectByNames(DbSession session, Collection names) {
    return executeLargeInputs(names, mapper(session)::selectByNames);
  }

  public GroupDto selectOrFailById(DbSession dbSession, long groupId) {
    GroupDto group = selectById(dbSession, groupId);
    if (group == null) {
      throw new RowNotFoundException(String.format("Could not find a group with id '%d'", groupId));
    }
    return group;
  }

  @CheckForNull
  public GroupDto selectById(DbSession dbSession, long groupId) {
    return mapper(dbSession).selectById(groupId);
  }

  public void deleteById(DbSession dbSession, long groupId) {
    mapper(dbSession).deleteById(groupId);
  }

  public int countByQuery(DbSession session, @Nullable String query) {
    return mapper(session).countByQuery(groupSearchToSql(query));
  }

  public List selectByQuery(DbSession session, @Nullable String query, int offset, int limit) {
    return mapper(session).selectByQuery(groupSearchToSql(query), new RowBounds(offset, limit));
  }

  public GroupDto insert(DbSession session, GroupDto item) {
    Date createdAt = new Date(system.now());
    item.setCreatedAt(createdAt)
      .setUpdatedAt(createdAt);
    mapper(session).insert(item);
    return item;
  }

  public GroupDto update(DbSession session, GroupDto item) {
    item.setUpdatedAt(new Date(system.now()));
    mapper(session).update(item);
    return item;
  }

  public List selectByUserLogin(DbSession session, String login) {
    return mapper(session).selectByUserLogin(login);
  }

  @CheckForNull
  private static String groupSearchToSql(@Nullable String query) {
    if (query == null) {
      return null;
    }

    String upperCasedNameQuery = StringUtils.upperCase(query, Locale.ENGLISH);
    return DatabaseUtils.buildLikeValue(upperCasedNameQuery, WildcardPosition.BEFORE_AND_AFTER);
  }

  private static GroupMapper mapper(DbSession session) {
    return session.getMapper(GroupMapper.class);
  }

}