-- Revert numerus:_merge_collection_into_payment from pg

begin;

set search_path to numerus, public;


create table collection (
	collection_id integer generated by default as identity primary key,
	company_id integer not null references company,
	slug uuid not null unique default gen_random_uuid(),
	description text not null,
	collection_date date not null default current_date,
	payment_account_id integer not null references payment_account,
	amount integer not null constraint collection_amount_positive check (amount > 0),
	currency_code text not null references currency,
	tags tag_name[] not null default '{}',
	payment_status text not null default 'complete' references payment_status,
	created_at timestamptz not null default current_timestamp
);

grant select, insert, update, delete on table collection to invoicer;
grant select, insert, update, delete on table collection to admin;

alter table collection enable row level security;

create policy company_policy
on collection
using (
	exists(
		select 1
		from company_user
		join user_profile using (user_id)
		where company_user.company_id = collection.company_id
	)
);

insert into collection (company_id, slug, description, collection_date, payment_account_id, amount, currency_code, tags, payment_status, created_at)
select company_id, slug, description, payment_date, payment_account_id, amount, currency_code, tags, payment_status, created_at
from payment
where amount > 0
;

create table invoice_collection (
	invoice_id integer not null references invoice,
	collection_id integer not null references collection,
	primary key (invoice_id, collection_id)
);

grant select, insert, update, delete on table invoice_collection to invoicer;
grant select, insert, update, delete on table invoice_collection to admin;

alter table invoice_collection enable row level security;

create policy company_policy
on invoice_collection
using (
	exists(
		select 1
		from invoice
		where invoice.invoice_id = invoice_collection.invoice_id
	)
);

insert into invoice_collection (invoice_id, collection_id)
select invoice_id, collection_id
from invoice_payment
join payment using (payment_id)
join collection using (slug)
;

delete from invoice_payment;

create table collection_attachment (
	collection_id integer primary key references collection,
	original_filename text not null,
	mime_type text not null,
	content bytea not null
);

grant select, insert, update, delete on table collection_attachment to invoicer;
grant select, insert, update, delete on table collection_attachment to admin;

alter table collection_attachment enable row level security;

create policy company_policy
on collection_attachment
using (
	exists(
		select 1
		from collection
		where collection.collection_id = collection_attachment.collection_id
	)
);

insert into collection_attachment (collection_id, original_filename, mime_type, content)
select collection_id, original_filename, mime_type, content
from payment_attachment
join payment using (payment_id)
join collection using (slug)
where payment.amount > 0
;

delete from payment_attachment
where payment_id in (
	select payment_id from payment where amount > 0
);

delete from payment where amount > 0;

update payment
set amount = -amount
;

alter table payment
  add constraint payment_amount_positive check (amount > 0)
, drop constraint if exists payment_amount_not_zero
;

commit;