package de.tivsource.page.install;
   
   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.ArrayList;
  import java.util.Date;
  import java.util.List;
  
  import de.tivsource.page.dao.administration.RoleDaoLocal;
  import de.tivsource.page.dao.administration.UserDaoLocal;
  import de.tivsource.page.entity.administration.Role;
  import de.tivsource.page.entity.administration.User;
  
  public class CreateUser {
  
      private UserDaoLocal userDaoLocal;
  
      private RoleDaoLocal roleDaoLocal;
  
      public void setUserDaoLocal(UserDaoLocal userDaoLocal) {
      	this.userDaoLocal = userDaoLocal;
      }
  
      public void setRoleDaoLocal(RoleDaoLocal roleDaoLocal) {
      	this.roleDaoLocal = roleDaoLocal;
      }
  
      public void generate() {
      	InputStream inputStream = CreateUser.class.getClassLoader().getResourceAsStream("csv/user.csv");
      	generate(inputStream);
      }// Ende generate()
  
      public void generate(InputStream inputStream) {
          BufferedReader in = new BufferedReader(new InputStreamReader(inputStream));
          try {
              String line = null;
              while ((line = in.readLine()) != null) {
                  if (!line.startsWith("[Format Definition]")) {
                      User user = convert(line);
                      userDaoLocal.merge(user);
                  }
              }
          } catch (IOException e) {
              e.printStackTrace();
          } catch (NoSuchAlgorithmException e) {
              e.printStackTrace();
          }
      }
      
      private User convert(String line) throws NoSuchAlgorithmException, UnsupportedEncodingException {
  
          // uuid|username|email|firstname|lastname|password|roles|added|modified|ip|
      	// Zerlege CSV-Zeile in String-Array.
      	String[] items = line.split("\\|");
  
      	// Erstelle Announcement-Objekt
      	User user = new User();
  
      	user.setUuid(items[0]);
      	user.setUsername(items[1]);
      	user.setEmail(items[2]);
          user.setFirstname(items[3]);
          user.setLastname(items[4]);
          user.setPassword(items[5]);
  
          // Erzeuge Role-List.
          List<Role> roles = new ArrayList<Role>();
  
          // Zerlege CSV-String.
          String[] csvTags = items[6].split(";");
  
          // Laufe durch das Array und füge die Tags der Tag-Liste hinzu.
          for (int i = 0; i < csvTags.length; i++) {
              roles.add(roleDaoLocal.findByTechnical(csvTags[i]));
          }
          user.setRoles(roles);
  
      	// Füge Erstellungsdatum hinzu.
      	user.setCreated(convertDateString(items[7]));
      	user.setModified(convertDateString(items[8]));
  
      	// Setze IP auf localhost.
      	user.setModifiedAddress(items[9]);
  
      	user.setModifiedBy(items[10]);
  
      	return user;
      }// Ende convert(String line)
  
      /**
       * 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();
         }
     }
 
 }// Ende class