package net.sumaris.core.action;
   
   /*-
    * #%L
    * Sumaris3 Core :: Sumaris3 Core Shared
    * $Id:$
    * $HeadURL:$
    * %%
    * Copyright (C) 2017 Ifremer
   * %%
   * This program 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.
   * 
   * 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 General Public License for more details.
   * 
   * You should have received a copy of the GNU General Public
   * License along with this program.  If not, see
   * <http://www.gnu.org/licenses/gpl-3.0.html>.
   * #L%
   */
  
  
  import net.sumaris.core.config.SumarisConfiguration;
  import net.sumaris.core.dao.schema.DatabaseSchemaDao;
  import net.sumaris.core.dao.schema.DatabaseSchemaDaoImpl;
  import net.sumaris.core.dao.technical.Daos;
  import net.sumaris.core.exception.DatabaseSchemaUpdateException;
  import net.sumaris.core.exception.SumarisTechnicalException;
  import net.sumaris.core.exception.VersionNotFoundException;
  import net.sumaris.core.service.ServiceLocator;
  import net.sumaris.core.service.schema.DatabaseSchemaService;
  import org.nuiton.version.Version;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  /**
   * <p>Update database schema class.</p>
   */
  public class DatabaseUpdateSchemaAction {
  	/* Logger */
  	private static final Logger log = LoggerFactory.getLogger(DatabaseUpdateSchemaAction.class);
  
  	/**
  	 * <p>run.</p>
  	 */
  	public void run() {
  		DatabaseSchemaService service = ServiceLocator.instance().getDatabaseSchemaService();
  
  		log.info("Starting schema update...");
  		ActionUtils.logConnectionProperties();
  
  		// Check if database is well loaded
  		if (!service.isDbLoaded()) {
  			log.warn("Could not update the schema: database seems to be empty!");
  			return;
  		}
  
  		// Getting the database version
  		try {
  			Version actualDbVersion = service.getDbVersion();
  			// result could be null, is DB is empty (mantis #21013)
  			if (actualDbVersion == null) {
  				log.warn("Could not get database schema version");
  			}
  			else {
  				log.info(String.format("Database schema version is [%s]", actualDbVersion));
  			}
  
  		} catch (SumarisTechnicalException e) {
  			log.error("Error while getting database version.", e);
  		}
  
  		// Getting the version after update
  		try {
  			Version expectedDbVersion = service.getApplicationVersion();
  			if (expectedDbVersion == null) {
  				log.warn("Unable to get the database schema version AFTER the update. Nothing to update !");
  				return;
  			}
  			log.info(String.format("Database schema version AFTER the update should be [%s]", expectedDbVersion));
  		} catch (SumarisTechnicalException e) {
  			log.error("Error while getting database version AFTER the update.", e);
  		}
  
  		// Run the update process
  		try {
  			log.info("Launching update...");
  			service.updateSchema();
  			log.info("Database schema successfully updated.");
  		} catch (SumarisTechnicalException e) {
  			log.error("Error while updating the database schema.", e);
  		}
  	}
  }