/**
    * 
    */
   package de.tivsource.page.restore;
   
   import java.io.BufferedReader;
   import java.io.IOException;
   import java.io.InputStream;
   import java.io.InputStreamReader;
  import java.io.UnsupportedEncodingException;
  import java.security.NoSuchAlgorithmException;
  import java.text.ParseException;
  import java.text.SimpleDateFormat;
  import java.util.Date;
  import java.util.HashMap;
  import java.util.Iterator;
  import java.util.Map;
  
  import org.apache.logging.log4j.LogManager;
  import org.apache.logging.log4j.Logger;
  
  import de.tivsource.page.dao.gallery.GalleryDaoLocal;
  import de.tivsource.page.dao.picture.PictureDaoLocal;
  import de.tivsource.page.entity.enumeration.Language;
  import de.tivsource.page.entity.gallery.Gallery;
  import de.tivsource.page.entity.namingitem.Description;
  import de.tivsource.page.entity.namingitem.NamingItem;
  
  /**
   * @author Marc Michele
   *
   */
  public class RestoreGallery {
  
      /**
       * Statischer Logger der Klasse.
       */
      private static final Logger LOGGER = LogManager.getLogger(RestoreGallery.class);
  
      private GalleryDaoLocal galleryDaoLocal;
  
      private PictureDaoLocal pictureDaoLocal;
  
      private Map<String, String> pictures = new HashMap<String, String>(); 
      
      public RestoreGallery(GalleryDaoLocal galleryDaoLocal, PictureDaoLocal pictureDaoLocal) {
          super();
          this.galleryDaoLocal = galleryDaoLocal;
          this.pictureDaoLocal = pictureDaoLocal;
      }
  
      public void generate(InputStream inputStream) {
          LOGGER.debug("generate(InputStream inputStream) aufgerufen");
          cleanup();
          BufferedReader in = new BufferedReader(new InputStreamReader(inputStream));
          try {
              String line = null;
              while ((line = in.readLine()) != null) {
                  if (!line.startsWith("[Format Definition]")) {
                  	Gallery gallery = convert(line);
                      galleryDaoLocal.merge(gallery);
                  }
              }
          } catch (IOException e) {
              e.printStackTrace();
          } catch (NoSuchAlgorithmException e) {
              e.printStackTrace();
          }
      }
  
      public void generateOverviewPictures() {
      	LOGGER.debug("generateOverviewPictures() aufgerufen");
      	Iterator<String> galleryUuids = pictures.keySet().iterator();
      	while (galleryUuids.hasNext()) {
      		String next = galleryUuids.next();
      		convertPictures(next, pictures.get(next));
          }
      }
      
      private Gallery convert(String line) throws NoSuchAlgorithmException, UnsupportedEncodingException {
  
  		// uuid|
  	    // uuid(de)|name(de)|description(de)|keywords(de)|
  	    // uuid(en)|name(en)|description(en)|keywords(en)|
  	    // visible|created|modified|modifiedBy|modifiedAddress|picture|
  	    // technical|orderNumber|pictureOnPage|
  
          // Zerlege CSV-Zeile in String-Array.
          String[] items = line.split("\\|");
  
          // Erstelle Announcement-Objekt
          Gallery gallery = new Gallery();
  
          gallery.setUuid(items[0]);
  
          Map<Language, Description> descriptionMap = new HashMap<Language, Description>();
          descriptionMap.put(Language.DE, createDescription(
                  items[1], items[2], items[3], 
                  items[4], Language.DE, gallery));
         descriptionMap.put(Language.EN, createDescription(
                 items[5], items[6], items[7], 
                 items[8], Language.EN, gallery));
         gallery.setDescriptionMap(descriptionMap);
 
         gallery.setVisible(items[9].equals("true") ? true : false);
         gallery.setCreated(convertDateString(items[10]));
         gallery.setModified(convertDateString(items[11]));
         gallery.setModifiedBy(items[12]);
         gallery.setModifiedAddress(items[13]);
 
         pictures.put(items[0], items[14]);
 
         gallery.setTechnical(items[15]);
         gallery.setOrderNumber(Integer.parseInt(items[16]));
         gallery.setPictureOnPage(items[17].equals("true") ? true : false);
 
 
         
         return gallery;
     }// Ende convert(String line)
 
     private void convertPictures(String galleryUuid, String pictureUuid) {
     	LOGGER.debug("convertPictures(String gallery, String picture) aufgerufen");
         Gallery gallery = galleryDaoLocal.findByUuid(galleryUuid);
         gallery.setPicture(pictureDaoLocal.findByUuid(pictureUuid));
         galleryDaoLocal.merge(gallery);
     }
 
     /**
      * Methode zum Konvertieren eines Strings des Formates "1970-12-01 23:59:59" in ein Date-Object. 
      * @param dateString
      * @return
      */
     private Date convertDateString(String dateString) {
         SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
         try {
             return simpleDateFormat.parse(dateString);
         } catch (ParseException e) {
             return new Date();
         }
     }
 
     private Description createDescription(
             String uuid, String name, String description, 
             String keywords, Language language, NamingItem namingItem) {
         Description pageDescription = new Description();
         pageDescription.setUuid(uuid);
         pageDescription.setName(name);
         pageDescription.setDescription(description);
         pageDescription.setKeywords(keywords);
         pageDescription.setLanguage(language);
         pageDescription.setNamingItem(namingItem);
         return pageDescription;
     }
 
     private void cleanup() {
         if(galleryDaoLocal.countAll() > 0) {
             Iterator<Gallery> galleryIterator = galleryDaoLocal.findAll(0, galleryDaoLocal.countAll()).iterator();
             while(galleryIterator.hasNext()) {
             	Gallery next = galleryIterator.next();
             	galleryDaoLocal.delete(next);
             }
         }
     }// Ende cleanup()
 
 }// Ende class