/*
 * Copyright (c) 2015, 2016, 2019, 2020 Eike Stepper (Loehne, Germany) and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *    Eike Stepper - initial API and implementation
 */
package org.eclipse.emf.cdo.explorer.repositories;

import org.eclipse.emf.cdo.common.CDOCommonRepository.IDGenerationLocation;
import org.eclipse.emf.cdo.common.branch.CDOBranch;
import org.eclipse.emf.cdo.explorer.CDOExplorerElement;
import org.eclipse.emf.cdo.explorer.checkouts.CDOCheckout;
import org.eclipse.emf.cdo.session.CDORepositoryInfo;
import org.eclipse.emf.cdo.session.CDOSession;
import org.eclipse.emf.cdo.session.CDOSessionProvider;
import org.eclipse.emf.cdo.transaction.CDOTransactionOpener;
import org.eclipse.emf.cdo.view.CDOViewOpener;

import org.eclipse.net4j.util.container.IContainer;
import org.eclipse.net4j.util.container.IManagedContainer;
import org.eclipse.net4j.util.security.IPasswordCredentials;
import org.eclipse.net4j.util.security.IPasswordCredentialsProvider2;

/**
 * A CDO server independent representation of a repository.
 *
 * @author Eike Stepper
 * @since 4.4
 * @noextend This interface is not intended to be extended by clients.
 * @noimplement This interface is not intended to be implemented by clients.
 */
public interface CDORepository
    extends CDOExplorerElement, IContainer<CDOBranch>, IPasswordCredentialsProvider2, CDOSessionProvider, CDOViewOpener, CDOTransactionOpener
{
  public static final String TYPE_REMOTE = "remote";

  public static final String TYPE_CLONE = "clone";

  public static final String TYPE_LOCAL = "local";

  public boolean isRemote();

  public boolean isClone();

  public boolean isLocal();

  /**
   * @since 4.7
   */
  public IManagedContainer getContainer();

  public String getConnectorType();

  public String getConnectorDescription();

  public String getName();

  public String getURI();

  public VersioningMode getVersioningMode();

  public IDGeneration getIDGeneration();

  @Override
  public IPasswordCredentials getCredentials();

  public void setCredentials(IPasswordCredentials credentials);

  public State getState();

  public boolean isConnected();

  public void connect();

  public void disconnect();

  public CDOCheckout[] getCheckouts();

  @Override
  public CDOSession getSession();

  public CDOSession acquireSession();

  public void releaseSession();

  /**
   * @author Eike Stepper
   */
  public enum VersioningMode
  {
    Normal(false, false), Auditing(true, false), Branching(true, true);

    private boolean supportingAudits;

    private boolean supportingBranches;

    private VersioningMode(boolean supportingAudits, boolean supportingBranches)
    {
      this.supportingAudits = supportingAudits;
      this.supportingBranches = supportingBranches;
    }

    public boolean isSupportingAudits()
    {
      return supportingAudits;
    }

    public boolean isSupportingBranches()
    {
      return supportingBranches;
    }

    public static VersioningMode from(CDORepositoryInfo repositoryInfo)
    {
      if (repositoryInfo.isSupportingBranches())
      {
        return VersioningMode.Branching;
      }

      if (repositoryInfo.isSupportingAudits())
      {
        return VersioningMode.Auditing;
      }

      return VersioningMode.Normal;
    }
  }

  /**
   * @author Eike Stepper
   */
  public enum IDGeneration
  {
    Counter(IDGenerationLocation.STORE), UUID(IDGenerationLocation.CLIENT);

    private IDGenerationLocation location;

    private IDGeneration(IDGenerationLocation location)
    {
      this.location = location;
    }

    public IDGenerationLocation getLocation()
    {
      return location;
    }

    public static IDGeneration from(CDORepositoryInfo repositoryInfo)
    {
      if (repositoryInfo.getIDGenerationLocation() == IDGenerationLocation.CLIENT)
      {
        return IDGeneration.UUID;
      }

      return IDGeneration.Counter;
    }
  }

  /**
   * @author Eike Stepper
   */
  public enum State
  {
    Connecting, Connected, Disconnecting, Disconnected
  }
}