-- DROP FUNCTION public.get_transactions_for_period(text, date, date);

CREATE OR REPLACE FUNCTION public.get_transactions_for_period(p_account_name text, p_start date DEFAULT NULL::date, p_end date DEFAULT NULL::date)
 RETURNS TABLE(bank_name text, account_type text, account_number text, account_friendly_name text, transaction_date date, transaction_description text, transaction_amount numeric, transaction_day_of_week text, running_bal numeric)
 LANGUAGE plpgsql
AS $function$
DECLARE
    v_start_date date;
    v_end_date date;

begin
	-- Set default values for start and end dates if not provided by the caller
    IF p_start IS NULL THEN
        v_start_date := make_date(date_part('year', now())::int, 1, 1);
    ELSE
        v_start_date := p_start;
    END IF;

    IF p_end IS NULL THEN
        v_end_date := (SELECT (date_trunc('month', NOW()) + interval '1 month - 1 day')::date);
    ELSE
        v_end_date := p_end;
    END IF;
-- raise notice 'FUNCTION: get_transactions_for_period';
-- E'\n' is new line
-- raise notice 'INPUT: % v_start_date = %; % v_end_date = %;', E'\n', v_start_date, E'\n', v_end_date;

return query
	select
		bl.account_bank_name, bl.account_type, bl.account_number, bl.account_friendly_name
		, bl.transaction_date, bl.transaction_description, bl.transaction_amount
		, bl.transaction_day_of_week, bl.running_bal
	from public.runbal bl
	where
		lower(bl.account_friendly_name) = trim(lower(p_account_name))
		and bl.transaction_date between v_start_date and v_end_date;
end;
$function$
;
