--
-- 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/>
--

CREATE OR REPLACE FUNCTION create_table_refresh_transfer_keys(
  IN shard_suffix VARCHAR DEFAULT NULL
)
RETURNS VOID
LANGUAGE plpgsql
AS $$
DECLARE
  table_name VARCHAR DEFAULT 'refresh_transfer_keys';
BEGIN

  PERFORM create_partitioned_table(
    'CREATE TABLE IF NOT EXISTS %I'
      '(rtc_serial BIGINT GENERATED BY DEFAULT AS IDENTITY' -- UNIQUE'
      ',melt_serial_id INT8 PRIMARY KEY' -- REFERENCES refresh_commitments (melt_serial_id) ON DELETE CASCADE'
      ',transfer_pub BYTEA NOT NULL CHECK(LENGTH(transfer_pub)=32)'
      ',transfer_privs BYTEA NOT NULL'
    ') %s ;'
    ,table_name
    ,'PARTITION BY HASH (melt_serial_id)'
    ,shard_suffix
  );

END
$$;

CREATE OR REPLACE FUNCTION add_constraints_to_refresh_transfer_keys_partition(
  IN partition_suffix VARCHAR
)
RETURNS void
LANGUAGE plpgsql
AS $$
BEGIN
  EXECUTE FORMAT (
    'ALTER TABLE refresh_transfer_keys_' || partition_suffix || ' '
      'ADD CONSTRAINT refresh_transfer_keys_' || partition_suffix || '_rtc_serial_key '
        'UNIQUE (rtc_serial)'
  );
END
$$;


INSERT INTO exchange_tables
    (name
    ,version
    ,action
    ,partitioned
    ,by_range)
  VALUES
    ('refresh_transfer_keys'
    ,'exchange-0002'
    ,'create'
    ,TRUE
    ,FALSE);
