AppEngineTagLib.groovy

import com.google.appengine.api.users.User;
import com.google.appengine.api.users.UserService;
import com.google.appengine.api.users.UserServiceFactory;

class AppEngineTagLib {
  static namespace = "appengine"
  def ifLoggedIn = { attrs, body ->
    def userService = UserServiceFactory.getUserService()
    if (userService.isUserLoggedIn()) {
      out << body()
    }
  }

  def ifNotLoggedIn = { attrs, body ->
    def userService = UserServiceFactory.getUserService()
    if (!userService.isUserLoggedIn()) {
      out << body()
    }
  }

  def ifAdminLoggedIn = { attrs, body ->
    def userService = UserServiceFactory.getUserService()
    if (userService.isUserLoggedIn() && userService.isUserAdmin()) {
      out << body()
    }
  }

  def ifAdminNotLoggedIn = { attrs, body ->
    def userService = UserServiceFactory.getUserService()
    if (userService.isUserLoggedIn() &&!userService.isUserAdmin()) {
      out << body()
    }
  }

  def loginUrl = { attrs, body ->
    def userService = UserServiceFactory.getUserService()
    out << userService.createLoginURL(request.getRequestURI())
  }

  def logoutUrl = { attrs, body ->
    def userService = UserServiceFactory.getUserService()
    out << userService.createLogoutURL(request.getRequestURI())
  }

  def userNickname = { attrs, body ->
    def userService = UserServiceFactory.getUserService()
    def user = userService.getCurrentUser()
    if(user!=null){
      out << user.getNickname()
    }else{
      out<<"Guest"
    }
  }

  def userAuthDomain = { attrs, body ->
    def userService = UserServiceFactory.getUserService()
    def user = userService.getCurrentUser()
    if(user!=null){
      out << user.getAuthDomain()
    }else{
      out<<""
    }
  }

  def userEmail = { attrs, body ->
    def userService = UserServiceFactory.getUserService()
    def user = userService.getCurrentUser()
    if(user!=null){
      out << user.getEmail()
    }else{
      out<<""
    }
  }
}