EditDrupAuthServer.java

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/*
 * Project: Server for annotations sharing
 * Author: Ing. Jaroslav Dytrych idytrych@fit.vutbr.cz
 * File: EditDrupAuthServer.java
 * Description: Backbean for pages for adding, editing and deleting of drupal 
 *              authorization approved servers
 */

/**
 * @file EditDrupAuthServer.java
 *
 * @brief Backbean of pages for managing drupal authorization approved servers 
 */

package cz.vutbr.fit.knot.annotations.web;

import cz.vutbr.fit.knot.annotations.app.AppBean;
import cz.vutbr.fit.knot.annotations.app.Constants;
import cz.vutbr.fit.knot.annotations.entity.DrupAuthServer;
import java.io.Serializable;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.faces.bean.ManagedBean;
import javax.faces.bean.ViewScoped;

/**
 * Backbean of pages for managing drupal authorization approved servers 
 *
 * @brief Backbean of pages for managing drupal authorization approved servers  
 * @author Martin Petr (xpetrm05)
 */
@ManagedBean
@ViewScoped
public class EditDrupAuthServer implements Serializable {
  /** Variable holds database entity of cloner approved server */
  private DrupAuthServer drupAuthServer;
  /** IP address of server */
  private String ipAddress;
  /** Host name of server */
  private String hostName;
  /** Error message that be displayed in form */
  private String errorMessage;

  /**
   * Constructor
   */
  public EditDrupAuthServer() {
  }

  /**
   * Gets IP address of approved server for drupal authorizationr
   *
   * @return Returns IP address of approved server
   */
  public String getIpAddress() {
    if(drupAuthServer == null){
      drupAuthServer = SessionManager.getSession().getActualDrupAuthServer();
    }
    
    DrupAuthServer backup = null;
    if (SessionManager.getSession().getFormBackup() != null) {
       if (SessionManager.getSession().getFormBackup().getClass().getName().endsWith("DrupAuthServer")) {
         backup = (DrupAuthServer) SessionManager.getSession().getFormBackup();
         if (backup.getId() != drupAuthServer.getId()) {
          backup = null;
        }
       }
    }
    
    if(ipAddress == null && backup != null) {
      ipAddress = backup.getIpAddress();
    } else if(ipAddress == null && drupAuthServer != null) {
      ipAddress = drupAuthServer.getIpAddress();
    } else if(ipAddress == null) {
      ipAddress = "";
    }
    
    return ipAddress;
  }

  /**
   * Sets IP address of approved server for drupal authorization
   *
   * @param ipAddress IP address of approved server
   */
  public void setIpAddress(String ipAddress) {
    this.ipAddress = ipAddress;
  }

  /**
   * Gets host name of approved server for drupal authorization
   *
   * @return Returns host name of approved server
   */
  public String getHostName() {
    if(drupAuthServer == null){
      drupAuthServer = SessionManager.getSession().getActualDrupAuthServer();
    }
    
    DrupAuthServer backup = null;
    if (SessionManager.getSession().getFormBackup() != null) {
       if (SessionManager.getSession().getFormBackup().getClass().getName().endsWith("DrupAuthServer")) {
         backup = (DrupAuthServer) SessionManager.getSession().getFormBackup();
         if (backup.getId() != drupAuthServer.getId()) {
          backup = null;
        }
       }
    }
    
    if(hostName == null && backup != null) {
      hostName = backup.getHostName();
    } else if(hostName == null && drupAuthServer != null) {
      hostName = drupAuthServer.getHostName();
    } else if(hostName == null) {
      hostName = "";
    }
    
    return hostName;
  }

  /**
   * Sets host name of approved server for drupal authorization
   *
   * @param hostName Host name of approved server
   */
  public void setHostName(String hostName) {
    this.hostName = hostName;
  }

  /**
   * Gets error message displayed in form
   *
   * @return Returns error message displayed in form
   */
  public String getErrorMessage() {
    return errorMessage;
  }

  /**
   * Sets error message to be displayed in form
   *
   * @param errorMessage Error message to be displayed in form
   */
  public void setErrorMessage(String errorMessage) {
    this.errorMessage = errorMessage;
  }
  
  /**
   * Action listener for save button in the page for editing of the drupal authorization server
   *
   * @return Returns page outcome (identificator of next page or null to stay here)
   */
  public String btnNewAction() {
    boolean errorOccured = false;
    
    if(ipAddress.isEmpty() || ipAddress == null){
      errorMessage = MessageProvider.getMessage("dasIpError");
      errorOccured = true;
    }
    
    if(hostName.isEmpty() || hostName == null){
      errorMessage = MessageProvider.getMessage("dasHostNameError");
      errorOccured = true;
    }
    
    if(errorOccured){
      return null;
    }
    
    drupAuthServer = new DrupAuthServer(ipAddress,hostName);
    
    //persist new server ip
    if(AppBean.getPersistenceManager().persistEntity(drupAuthServer)){
      errorMessage = MessageProvider.getMessage("DAAddDatabaseFailure");
      if (Constants.LOG_LEVEL >= Constants.LOG_LEVEL_SERVER_ERRORS) {
        String msg = "Persisting of new drupal authorization server failed.";
        Logger.getLogger(EditStoryScope.class.getName()).log(Level.SEVERE, msg);
      }
      return null;
    }
    
    SessionManager.getSession().setActualDrupAuthServer(null);
    return "cancel";
  }
  
  /**
   * Action listener for save button on page for adding new drupal authorization server
   *
   * @return Returns page outcome (identificator of next page or null to stay here)
   */
  public String btnEditAction() {
    boolean errorOccured = false;
    
    if(ipAddress.isEmpty() || ipAddress == null){
      errorMessage = MessageProvider.getMessage("dasIpError");
      errorOccured = true;
    }
    
    if(hostName.isEmpty() || hostName == null){
      errorMessage = MessageProvider.getMessage("dasHostNameError");
      errorOccured = true;
    }
    
    if(errorOccured){
      return null;
    }
    
    drupAuthServer.setIpAddress(ipAddress);
    drupAuthServer.setHostName(hostName);
    
    //persist new server ip and host
    DrupAuthServer saved = (DrupAuthServer) AppBean.getPersistenceManager().saveEntityChanges(drupAuthServer);
    if (saved == null) {
      errorMessage = MessageProvider.getMessage("DAEditDatabaseFailure");
      if (Constants.LOG_LEVEL >= Constants.LOG_LEVEL_SERVER_ERRORS) {
        String msg = "Persisting of drupal authorization server failed.";
        Logger.getLogger(EditStoryScope.class.getName()).log(Level.SEVERE, msg);
      }
      return null;
    } else {  // if changes was successfully saved
      drupAuthServer = saved;
    }
    
    SessionManager.getSession().setActualDrupAuthServer(null);
    return "cancel";
  }
  
  /**
   * Action listener for delete button on deleting page. 
   * 
   * @return Returns page outcome (identificator of next page or null to stay here)
   */
  public String btnDeleteAction() {
    if(AppBean.getPersistenceManager().removeEntity(drupAuthServer)){
      errorMessage = MessageProvider.getMessage("DADeleteDatabaseFailure");
      if (Constants.LOG_LEVEL >= Constants.LOG_LEVEL_SERVER_ERRORS) {
        String msg = "DB failure during deleting drupal authorization server.";
        Logger.getLogger(EditStoryScope.class.getName()).log(Level.SEVERE, msg);
      }
    }
    
    SessionManager.getSession().setActualDrupAuthServer(null);
    return "cancel";
  }
  
  /**
   * Action listener for cancel button
   *
   * @return Returns page outcome
   */
  public String btnCancelAction() {
    SessionManager.getSession().setActualDrupAuthServer(null);
    return "cancel";
  } 
}