Initializes event for GSSHA model

def set_event(self,
                  simulation_start=None,
                  simulation_duration=None,
                  simulation_end=None,
                  rain_intensity=2,
                  rain_duration=timedelta(seconds=30*60),
                  event_type='EVENT',
                 ):
        """
        Initializes event for GSSHA model
        """
        # ADD TEMPORTAL EVENT INFORMAITON
        if event_type == 'LONG_TERM':
            self.event = LongTermMode(self.project_manager,
                                      self.db_session,
                                      self.project_directory,
                                      simulation_start=simulation_start,
                                      simulation_end=simulation_end,
                                      simulation_duration=simulation_duration,
                                     )
        else: # 'EVENT'
            self.event = EventMode(self.project_manager,
                                   self.db_session,
                                   self.project_directory,
                                   simulation_start=simulation_start,
                                   simulation_duration=simulation_duration,
                                   )
            self.event.add_uniform_precip_event(intensity=rain_intensity,
                                                duration=rain_duration)