/*
 * SonarQube
 * Copyright (C) 2009-2023 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.ce.task.projectanalysis.component;

import java.util.Collections;
import java.util.Map;
import java.util.Optional;
import org.sonar.db.source.FileHashesDto;

import static org.sonar.api.utils.Preconditions.checkNotNull;
import static org.sonar.api.utils.Preconditions.checkState;

public class PreviousSourceHashRepositoryImpl implements PreviousSourceHashRepository {
  private Map<String, FileHashesDto> previousFileHashesByUuid = null;

  public void set(Map<String, FileHashesDto> previousFileHashesByUuid) {
    checkState(this.previousFileHashesByUuid == null, "Repository already initialized");
    checkNotNull(previousFileHashesByUuid);
    this.previousFileHashesByUuid = Collections.unmodifiableMap(previousFileHashesByUuid);
  }

  public Map<String, FileHashesDto> getMap() {
    return previousFileHashesByUuid;
  }

  @Override
  public Optional<FileHashesDto> getDbFile(Component component) {
    checkState(previousFileHashesByUuid != null, "Repository not initialized");
    return Optional.ofNullable(previousFileHashesByUuid.get(component.getUuid()));
  }
}
