/*
    * This file is part of Waarp Project (named also Waarp or GG).
    *
    *  Copyright (c) 2019, Waarp SAS, and individual contributors by the @author
    *  tags. See the COPYRIGHT.txt in the distribution for a full listing of
    * individual contributors.
    *
    *  All Waarp Project is free software: you can redistribute it and/or
    * modify it under the terms of the GNU General Public License as published by
   * the Free Software Foundation, either version 3 of the License, or (at your
   * option) any later version.
   *
   * Waarp 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 General Public License for more details.
   *
   *  You should have received a copy of the GNU General Public License along with
   * Waarp . If not, see <http://www.gnu.org/licenses/>.
   */
  
  package org.waarp.http.protocol;
  
  import org.waarp.common.command.exception.CommandAbstractException;
  import org.waarp.common.database.exception.WaarpDatabaseException;
  import org.waarp.common.logging.WaarpLogger;
  import org.waarp.common.logging.WaarpLoggerFactory;
  import org.waarp.common.utility.WaarpSystemUtil;
  import org.waarp.http.protocol.servlet.HttpAuthent;
  import org.waarp.openr66.context.R66BusinessInterface;
  import org.waarp.openr66.context.R66FiniteDualStates;
  import org.waarp.openr66.context.task.exception.OpenR66RunnerErrorException;
  import org.waarp.openr66.database.data.DbTaskRunner;
  import org.waarp.openr66.protocol.configuration.Configuration;
  
  import java.io.File;
  
  /**
   * Http Resumable session
   */
  public class HttpDeleteSession extends HttpSessionAbstract {
    private static final WaarpLogger logger =
        WaarpLoggerFactory.getLogger(HttpDeleteSession.class);
    private final String identifier;
    private final File file;
  
    /**
     * Constructor for reading from database only
     *
     * @param identifier
     * @param authent
     *
     * @throws OpenR66RunnerErrorException
     */
    public HttpDeleteSession(final String identifier, final HttpAuthent authent)
        throws WaarpDatabaseException {
      super(authent);
      this.identifier = identifier;
      final DbTaskRunner runner;
      if (!WaarpSystemUtil.isJunit()) {
        checkAuthentR66Business(this, session, authent);
        runner = getDbTaskRunner(authent.getUserId(), identifier);
        try {
          session.getDir().changeDirectory(runner.getRule().getRecvPath());
        } catch (final CommandAbstractException e) {
          // Nothing: ignore
        }
        final String baseDir = runner.getRule().getRecvPath();
        final String path = session.getDir().getFullPath();
        final String filepath_in = runner.getFilename();
        final String finalPath =
            filepath_in.replace(baseDir, path).replace("//", "/");
        logger.info("From {} to {} using {} gives {}", baseDir, path, filepath_in,
                    finalPath);
        file = new File(finalPath);
      } else {
        runner = null;
        file = null;
      }
    }
  
    /**
     * Reload the DbTaskRunner for this user and rulename
     *
     * @param user
     * @param identifier
     *
     * @return the DbTaskRunner, potentially new
     *
     * @throws IllegalArgumentException
     */
    private DbTaskRunner getDbTaskRunner(final String user,
                                         final String identifier)
        throws IllegalArgumentException, WaarpDatabaseException {
      final long specialId = Long.parseLong(identifier);
      final String requested = Configuration.configuration.getHostId();
      DbTaskRunner runner = null;
  
      // Try to reload it
      try {
       logger.debug("{} {} <-> {}", specialId, user, requested);
       runner = new DbTaskRunner(specialId, user, requested);
     } catch (final WaarpDatabaseException e) {
       logger.debug("{} {} {}", specialId, user, requested);
       runner = new DbTaskRunner(specialId, requested, user);
     }
     runner.setSender(true);
     try {
       session.setRunner(runner);
     } catch (final OpenR66RunnerErrorException e) {
       logger.debug(e);
     }
     session.setReady(true);
     return runner;
   }
 
   /**
    * @return the File
    */
   public final File getFile() {
     return file;
   }
 
   /**
    * @return the identifier
    */
   public final String getIdentifier() {
     return identifier;
   }
 
   @Override
   public final void error(final Exception e,
                           final R66BusinessInterface business)
       throws IllegalArgumentException {
     logger.error(e.getMessage());
     if (business != null) {
       business.checkAtError(session);
     }
     session.newState(R66FiniteDualStates.ERROR);
     throw new IllegalArgumentException(e);
   }
 
   @Override
   public String toString() {
     return "DS: {" + session.toString() + ", " + identifier + ", " +
            file.getAbsolutePath() + "}";
   }
 }