Stan Runge
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33 lines
1.7 KiB
PL/PgSQL
33 lines
1.7 KiB
PL/PgSQL
CREATE TYPE "worldtodo"."location_precision" AS ENUM('exact', 'approximate', 'none');--> statement-breakpoint
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ALTER TABLE "worldtodo"."tasks" ADD COLUMN "location_precision" "worldtodo"."location_precision";--> statement-breakpoint
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-- Hand-written: location_precision follows scale and lat/lon (map pins, tracker #4641).
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-- street/city = exact, region/country = approximate (rough centre), planet or no coordinates
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-- = none. A trigger instead of a generated column so drizzle-kit can diff the enum column.
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CREATE OR REPLACE FUNCTION worldtodo.set_location_precision() RETURNS trigger
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LANGUAGE plpgsql AS $$
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BEGIN
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NEW.location_precision := CASE
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WHEN NEW.lat IS NULL OR NEW.lon IS NULL OR NEW.scale = 'planet' THEN 'none'
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WHEN NEW.scale IN ('street', 'city') THEN 'exact'
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ELSE 'approximate'
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END::worldtodo.location_precision;
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RETURN NEW;
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END $$;
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--> statement-breakpoint
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DROP TRIGGER IF EXISTS tasks_location_precision ON worldtodo.tasks;
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--> statement-breakpoint
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CREATE TRIGGER tasks_location_precision BEFORE INSERT OR UPDATE OF scale, lat, lon, location_precision
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ON worldtodo.tasks FOR EACH ROW EXECUTE FUNCTION worldtodo.set_location_precision();
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--> statement-breakpoint
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-- Backfill (the trigger computes it) without bumping updated_at: touch_updated_at is paused
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-- for this one statement when it exists.
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DO $$
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DECLARE has_touch boolean := EXISTS (
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SELECT 1 FROM pg_trigger WHERE tgrelid = 'worldtodo.tasks'::regclass AND tgname = 'touch_updated_at'
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);
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BEGIN
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IF has_touch THEN ALTER TABLE worldtodo.tasks DISABLE TRIGGER touch_updated_at; END IF;
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UPDATE worldtodo.tasks SET location_precision = NULL;
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IF has_touch THEN ALTER TABLE worldtodo.tasks ENABLE TRIGGER touch_updated_at; END IF;
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END $$;
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