-- Internal tickets have a fixed, canonical customer identity.
-- Never overwrite another customer if an installation already uses ID 8.
DO $$
DECLARE
    existing_name TEXT;
BEGIN
    SELECT name INTO existing_name FROM customers WHERE id = 8;

    IF existing_name IS NULL THEN
        INSERT INTO customers (id, name, email, email_domain, country, is_active)
        VALUES (8, 'BMC Networks', 'info@bmcnetworks.dk', 'bmcnetworks.dk', 'DK', TRUE);
    ELSIF LOWER(TRIM(existing_name)) <> LOWER('BMC Networks') THEN
        RAISE EXCEPTION 'Customer ID 8 is already used by %, expected BMC Networks', existing_name;
    END IF;
END $$;

SELECT setval(
    pg_get_serial_sequence('customers', 'id'),
    GREATEST((SELECT COALESCE(MAX(id), 1) FROM customers), 1),
    TRUE
);