--
-- This file is part of TALER
-- Copyright (C) 2014--2022 Taler Systems SA
--
-- TALER is free software; you can redistribute it and/or modify it under the
-- terms of the GNU General Public License as published by the Free Software
-- Foundation; either version 3, or (at your option) any later version.
--
-- TALER is distributed in the hope that it will be useful, but WITHOUT ANY
-- WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
-- A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
--
-- You should have received a copy of the GNU General Public License along with
-- TALER; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
--

-- FIXME: this table should be sharded!

CREATE TABLE policy_fulfillments
  (fulfillment_id BIGINT GENERATED BY DEFAULT AS IDENTITY UNIQUE PRIMARY KEY
  ,fulfillment_timestamp INT8 NOT NULL
  ,fulfillment_proof VARCHAR
  ,h_fulfillment_proof BYTEA NOT NULL CHECK(LENGTH(h_fulfillment_proof) = 64) UNIQUE
  ,policy_hash_codes BYTEA NOT NULL CHECK(0 = MOD(LENGTH(policy_hash_codes), 16))
  );
COMMENT ON TABLE policy_fulfillments
  IS 'Proofs of fulfillment of policies that were set in deposits';
COMMENT ON COLUMN policy_fulfillments.fulfillment_timestamp
  IS 'Timestamp of the arrival of a proof of fulfillment';
COMMENT ON COLUMN policy_fulfillments.fulfillment_proof
  IS 'JSON object with a proof of the fulfillment of a policy. Supported details depend on the policy extensions supported by the exchange.';
COMMENT ON COLUMN policy_fulfillments.h_fulfillment_proof
  IS 'Hash of the fulfillment_proof';
COMMENT ON COLUMN policy_fulfillments.policy_hash_codes
  IS 'Concatenation of the policy_hash_code of all policy_details that are fulfilled by this proof';