package de.tivsource.page.backup;
   
   import java.io.BufferedWriter;
   import java.io.File;
   import java.io.FileWriter;
   import java.io.IOException;
   import java.text.SimpleDateFormat;
   import java.util.Iterator;
   import java.util.UUID;
  
  import org.apache.logging.log4j.LogManager;
  import org.apache.logging.log4j.Logger;
  
  import de.tivsource.page.dao.property.PropertyDaoLocal;
  import de.tivsource.page.entity.property.Property;
  
  public class BackupProperty {
  
      /**
       * Statischer Logger der Klasse.
       */
      private static final Logger LOGGER = LogManager.getLogger(BackupProperty.class);
  
      private PropertyDaoLocal propertyDaoLocal;
  
      public BackupProperty(PropertyDaoLocal propertyDaoLocal) {
          super();
          this.propertyDaoLocal = propertyDaoLocal;
      }
  
      public File getBackupFile() throws IOException {
          LOGGER.info("getBackupFile() aufgerufen.");
  
          // Erzeuge eine zufällige UUID
          String randomId = UUID.randomUUID().toString();
          
          // Datei Kram
          File backupFile = new File("/tmp/property_" + randomId + ".csv");
          FileWriter backupFileWriter = new FileWriter(backupFile);
          BufferedWriter backupFileWriterOut = new BufferedWriter(backupFileWriter);
  
          // Format Definition
          backupFileWriterOut.write("[Format Definition] => key|value|created|modified|modifiedBy|modifiedAddress|");
  
          Iterator<Property> typeIterator = propertyDaoLocal.findAll(0, propertyDaoLocal.countAll()).iterator();
          while(typeIterator.hasNext()) {
              Property next = typeIterator.next();
              backupFileWriterOut.write("\n");
              backupFileWriterOut.write(convertToCsvLine(next));
          }
          backupFileWriterOut.close();
          backupFileWriter.close();
  
          return backupFile;
      }// Ende getBackupFiles()
  
      private static String convertToCsvLine(Property next) {
          SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
  
          // key|value|created|modified|modifiedBy|modifiedAddress|
          StringBuffer nextString = new StringBuffer();
  
          nextString.append(next.getKey());
          nextString.append("|");
  
          nextString.append(next.getValue());
          nextString.append("|");
  
          nextString.append(simpleDateFormat.format(next.getCreated()));
          nextString.append("|");
  
          nextString.append(simpleDateFormat.format(next.getModified()));
          nextString.append("|");
  
          nextString.append(next.getModifiedBy());
          nextString.append("|");
  
          nextString.append(next.getModifiedAddress());
          nextString.append("|");
  
          return nextString.toString();
      }
  
  }// Ende class