fp/services/migrations/migrations/00020_add-streams-update-trigger.sql

-- delete outdated
DROP FUNCTION IF EXISTS public.tg__add_job();


-- We create a function which lets Postgrest's automation user create jobs in Graphile Worker.
-- Normally only the database owner, in our case `postgres`, can add jobs due to RLS in graphile_worker tables.
-- Under the advice of graphile_worker author, we can use a SECURITY DEFINER wrapper function.
-- @see https://worker.graphile.org/docs/sql-add-job#graphile_workeradd_job:~:text=graphile_worker.add_job(...),that%20are%20necessary.)
-- @see https://discord.com/channels/489127045289476126/1179293106336694333/1179605043729670306
-- @see https://discord.com/channels/489127045289476126/498852330754801666/1067707497235873822
CREATE FUNCTION public.tg__add_record_job() RETURNS trigger
  LANGUAGE plpgsql SECURITY DEFINER
  SET search_path TO 'pg_catalog', 'public', 'pg_temp'
  AS $$
    begin
      PERFORM graphile_worker.add_job('record', json_build_object(
        'url', NEW.url,
        'stream_id', NEW.id
      ), max_attempts := 12);
      return NEW;
    end;
  $$;




-- when a stream is updated, we add a job in graphile to update_discord_message
CREATE TRIGGER stream_update
  AFTER UPDATE ON api.streams
  FOR EACH ROW
  EXECUTE PROCEDURE public.tg__update_discord_message('update_discord_message');

-- when a stream is created, we add a 'record' job in graphile-worker
CREATE TRIGGER stream_create
  AFTER INSERT ON api.streams
  FOR EACH ROW
  EXECUTE PROCEDURE public.tg__add_record_job('record');