-- Truncate all application data in the eventhub schema.
-- Keeps the schema and Flyway migration history intact.
-- Intended for PostgreSQL / TimescaleDB environments.

DO $$
DECLARE
    table_list text;
BEGIN
    SELECT string_agg(format('%I.%I', schemaname, tablename), ', ' ORDER BY tablename)
    INTO table_list
    FROM pg_tables
    WHERE schemaname = 'eventhub';

    IF table_list IS NULL THEN
        RAISE NOTICE 'No tables found in schema eventhub.';
        RETURN;
    END IF;

    EXECUTE 'TRUNCATE TABLE ' || table_list || ' RESTART IDENTITY CASCADE';
END
$$;