package net.sumaris.core.service.schema;
   
   /*-
    * #%L
    * SUMARiS :: Sumaris Core Shared
    * $Id:$
    * $HeadURL:$
    * %%
    * Copyright (C) 2018 SUMARiS Consortium
   * %%
   * 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.exception.DatabaseSchemaUpdateException;
  import net.sumaris.core.exception.SumarisTechnicalException;
  import net.sumaris.core.exception.VersionNotFoundException;
  import org.nuiton.version.Version;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  import org.springframework.beans.factory.annotation.Autowired;
  import org.springframework.stereotype.Service;
  
  import java.io.File;
  import java.io.IOException;
  
  /**
   * <p>DatabaseSchemaServiceImpl class.</p>
   *
   * @author Lionel Touseau <lionel.touseau@e-is.pro>
   */
  @Service("databaseSchemaService")
  public class DatabaseSchemaServiceImpl implements DatabaseSchemaService {
  
      /** Logger. */
      private static final Logger log =
              LoggerFactory.getLogger(DatabaseSchemaServiceImpl.class);
      
      @Autowired
  	protected SumarisConfiguration config;
  
      @Autowired
      protected DatabaseSchemaDao databaseSchemaDao;
      
      /** {@inheritDoc} */
      @Override
      public Version getDbVersion() {
          Version version;
          try {
              if (!isDbLoaded()) {
                  throw new VersionNotFoundException("Unable to get Database version: database is empty");
              }
              version = databaseSchemaDao.getSchemaVersion();
          } catch (VersionNotFoundException e) {
              if (log.isWarnEnabled()) {
                  log.warn(e.getMessage());
              }
              version = null;
          }
          return version;
      }
      
      /** {@inheritDoc} */
      @Override
      public Version getApplicationVersion() {
          return  databaseSchemaDao.getSchemaVersionIfUpdate();
      }
  
      /** {@inheritDoc} */
      @Override
      public void updateSchema() {
          try {
              databaseSchemaDao.updateSchema();
          } catch (DatabaseSchemaUpdateException e) {
              throw new SumarisTechnicalException(e.getCause());
          }
      }
  
      /** {@inheritDoc} */
      @Override
      public boolean isDbLoaded() {
          return databaseSchemaDao.isDbLoaded();
      }
      
     /** {@inheritDoc} */
     @Override
     public boolean isDbExists() {    	
         return databaseSchemaDao.isDbExists();
     }
     
     /** {@inheritDoc} */
     @Override
     public void generateStatusReport(File outputFile) throws IOException {
         if (outputFile == null || !outputFile.getParentFile().isDirectory() || !outputFile.canWrite()) {
             log.error("Could not write into the output file. Please make sure the given path is a valid path.");
             return;
         }        
 
         databaseSchemaDao.generateStatusReport(outputFile);
     }
     
     /** {@inheritDoc} */
     @Override
     public void generateDiffReport(File outputFile) {
         if (outputFile == null || !outputFile.getParentFile().isDirectory() || !outputFile.canWrite()) {
             log.error("Could not write into the output file. Please make sure the given path is a valid path.");
             return;
         }        
         databaseSchemaDao.generateDiffReport(outputFile, config.getLiquibaseDiffTypes());
     }
     
     /** {@inheritDoc} */
     @Override
     public void generateDiffChangeLog(File outputFile) {
         if (outputFile == null 
                 || !outputFile.getParentFile().isDirectory() 
                 || (outputFile.exists() && !outputFile.canWrite())) {
             log.error("Could not write into the output file. Please make sure the given path is a valid path.");
             throw new SumarisTechnicalException("Invalid path: " + outputFile.getName());
         }        
         databaseSchemaDao.generateDiffChangeLog(outputFile, config.getLiquibaseDiffTypes());
     }
     
     /** {@inheritDoc} */
     @Override
     public void createSchemaToFile(File outputFile, boolean withDrop) throws IOException {
         databaseSchemaDao.generateCreateSchemaFile(outputFile.getCanonicalPath(), false, withDrop, true);
     }
 
     /** {@inheritDoc} */
     @Override
     public void updateSchemaToFile(File outputFile) throws IOException {
         databaseSchemaDao.generateUpdateSchemaFile(outputFile.getCanonicalPath());
     }
 }