-- Deploy numerus:add_collection to pg
-- requires: roles
-- requires: schema_numerus
-- requires: collection
-- requires: invoice_collection
-- requires: company
-- requires: currency
-- requires: parse_price
-- requires: tag_name
-- requires: update_invoice_collection_status

begin;

set search_path to numerus, public;

create or replace function add_collection(company integer, invoice_id integer, collection_date date, payment_account_id integer, description text, amount text, tags tag_name[]) returns uuid as
$$
declare
	cid integer;
	cslug uuid;
	amount_cents integer;
begin
	insert into collection
	( company_id
	, payment_account_id
	, description
	, collection_date
	, amount
	, currency_code
	, payment_status
	, tags
	)
	select company_id
	     , payment_account_id
	     , description
	     , collection_date
	     , parse_price(amount, currency.decimal_digits)
	     , currency_code
	     , 'complete'
	     , tags
	from company
	join currency using (currency_code)
	where company.company_id = add_collection.company
	returning collection_id, slug, collection.amount
	into cid, cslug, amount_cents
	;

	if invoice_id is not null then
		-- must be inserted before updating statuses, so that it can see this
		-- collection’s amount too.
		insert into invoice_collection (invoice_id, collection_id)
		values (invoice_id, cid)
		;

		perform update_invoice_collection_status(cid, invoice_id, amount_cents);
	end if;

	return cslug;
end
$$
	language plpgsql
;

revoke execute on function add_collection(integer, integer, date, integer, text, text, tag_name[]) from public;
grant execute on function add_collection(integer, integer, date, integer, text, text, tag_name[]) to invoicer;
grant execute on function add_collection(integer, integer, date, integer, text, text, tag_name[]) to admin;

commit;