-- in order to add foreign keys is mandatory to have right values for related data.
-- so we should remove the records without related data

CREATE OR REPLACE FUNCTION RemoveRecordsWithoutRelatedData()
RETURNS void
LANGUAGE 'plpgsql'
AS
$$
BEGIN



if ( (select count(*) from emailservice where id = 2) > 1  ) then
	delete from public.emailservice where id = 2;

	INSERT INTO public.emailservice(
         id, "user", pass, enable, pop_server, pop_port, smtp_server, smtp_port, is_pop_ssl, is_smtp_ssl, last_email_time)
    VALUES (2, 'poll', 'poll', 0, 'pop.gmail.com', 995, 'smtp.gmail.com', 587, true, true, 0);

end if;


--=============================================
-- insert a dummy user if it doesn't exist
--=============================================
if not exists ( select * from public.users where userid = 0) then
	INSERT INTO users(userid, firstname, lastname, login, password, user_type, ison,backup_user_id) VALUES (0, 'anything', 'anything', 'anything', 'anything', 100, 0, -1 );
end if;

--=============================================
-- insert a dummy suscriber if it doesn't exist
--=============================================   
if not exists ( select * from subscriber where sc_id = 0 ) then
	insert into subscriber (sc_id, imei) values ( 0, '0');
end if;

--==========================================================
-- replace the invalid user ids to the id of the dummy user
--==========================================================
if exists ( select * from public.sms where user_id < 0) then
	update sms set user_id = 0 	where user_id = -1;
end if;



--========================================
-- remove the emergalarm records
-- whose subscriber doesn't exists any more
--========================================
delete from public.emergalarm 
where sc_id in ( select distinct sc_id from public.emergalarm 
				 except
				 select sc_id from public.subscriber
				)
or user_id in (  select distinct user_id from public.emergalarm 
				 except
				 select userid from public.users
			  );

--========================================
-- remove the groups
-- whose radio_gw doesn't exists any more
--========================================

delete from public.groups
where r_gw_id in ( select distinct r_gw_id from public.groups
				   except
				    select "ID" from public.radio_gw 
				  );


--========================================
-- remove the passenger
-- whose subscriber doesn't exists any more
--========================================

delete from public.passenger
where sc_id in ( select distinct sc_id from public.passenger
				   except
				    select sc_id from public.subscriber 
				  );

--========================================
-- remove the subs_gateway 
-- whose subscriber doesn't exists any more
--========================================

delete from public.subs_gateway
where gateway_id in ( select distinct gateway_id from public.subs_gateway
		      except
		      select "ID" from public.gateways
		    )
or radio_gw_id 	 in ( select distinct radio_gw_id from public.subs_gateway
		      except
		      select "ID" from public.radio_gw
		    )  
or sc_id 	in  ( select distinct sc_id from public.subs_gateway 
		     except
		     select sc_id from public.subscriber 
		    );
--========================================
-- remove the speedalarm records
-- whose subscriber doesn't exists any more
--========================================
delete from public.speedalarm 
where sc_id in ( select distinct sc_id from public.speedalarm 
				 except
				 select sc_id from public.subscriber
	       )
or user_id in (  select distinct user_id from public.speedalarm 
				 except
				 select userid from public.users
			  );

--========================================
-- remove the soundcard records
-- whose user doesn't exists any more
--========================================
delete from public.soundcards
where user_id in ( select distinct user_id from public.soundcards
				   except
				   select userid from public.users
				  );


--========================================
-- remove the emergdi records
-- whose subscriber doesn't exists any more
--========================================
delete from public.emergdi
where sc_id in ( select distinct sc_id from public.emergdi
		         except
		         select sc_id from public.subscriber 
		    );

--========================================
-- remove the sms records
-- whose subscriber doesn't exists any more
--========================================
delete from public.sms
where sc_id_sour in ( select distinct sc_id_sour from public.sms
		      except
		      select sc_id from public.subscriber 
		    )
or    sc_id_dest in ( select distinct sc_id_dest from public.sms
		      except
		      select sc_id from public.subscriber 
		    );


--========================================
-- remove the messages records
-- whose subscriber doesn't exists any more
--========================================
delete from public.messages
where sc_id in ( select distinct sc_id from public.messages
		 except
		 select sc_id from public.subscriber
		);
		
--========================================
-- remove the geozoneinout records
-- whose subscriber doesn't exists any more
--========================================
delete from public.geozoneinout
where sc_id in ( select distinct sc_id from public.geozoneinout 
				except
				select sc_id from public.subscriber
				);




--========================================
-- remove the subscriber_history records
-- whose subscriber/ vehicle doesn't exists any more
--========================================
delete from public.subscriber_history
where sc_id in ( select distinct sc_id from public.subscriber_history 
		 except
		 select sc_id from public.subscriber
		)
or veh_id in ( select distinct veh_id from public.subscriber_history 
			   except
			   select id from public.vehicle
		     );


--========================================
-- remove the user_radio records
-- whose user_id / radio_id doesn't exists any more
--========================================

delete from public.user_radio
where user_id in ( select distinct user_id from public.user_radio
		      except
		      select userid from public.users
		    )
or radio_id  in ( select distinct radio_id from public.user_radio
				  except
				  select "ID" from public.radio_gw
				);  


--========================================
-- remove the user_group records
-- whose user doesn't exists any more
--========================================
delete from public.users_group
where userid in ( select distinct userid from public.users_group 
				   except
				   select userid from public.users
		        )
or grp_id	in  ( select distinct grp_id from public.users_group 
				   except
				   select id from public.groups
		        );

--========================================
-- remove the vehicle_group
-- whose group_id doesn't exists any more
--========================================
delete from public.vehicle_group
where grp_ip in ( select distinct grp_ip from public.vehicle_group 
		  except
		  select id from groups
		)
or     sc_id in ( select distinct sc_id from public.vehicle_group 
		  except
		  select sc_id from public.subscriber 
		);

--========================================
-- remove the vehicle_user
-- whose user_id doesn't exists any more
--========================================
delete from public.vehicle_user
where user_id in ( select distinct user_id from public.vehicle_user 
		  except
		  select userid from users
		)
or veh_id in ( select distinct veh_id from public.vehicle_user 
		  except
		  select id from public.vehicle
		);


--========================================
-- remove the zonepoints records
-- whose zone_id doesn't exists any more
--========================================
delete from public.zonepoints
where zone_id in ( select distinct zone_id from public.zonepoints 
				   except
				   select idx from public.zonename
		          );

--========================================
-- remove sc_id=0 from all records
--========================================
delete from public.subscriber_stun
where sc_id = 0;
delete from public.subscriber_alarm
where sc_id = 0;
delete from public.emergdi
where sc_id = 0;
delete from public.messages
where sc_id = 0;
delete from public.subs_gateway
where sc_id = 0;
delete from public.subscriber
where sc_id = 0;


END;
$$