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+--
+-- This file is part of TALER
+-- Copyright (C) 2014--2023 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 FUNCTION create_table_purse_requests(
+ IN partition_suffix TEXT DEFAULT NULL
+)
+RETURNS VOID
+LANGUAGE plpgsql
+AS $$
+DECLARE
+ table_name TEXT DEFAULT 'purse_requests';
+BEGIN
+ PERFORM create_partitioned_table(
+ 'CREATE TABLE %I '
+ '(purse_requests_serial_id BIGINT GENERATED BY DEFAULT AS IDENTITY'
+ ',purse_pub BYTEA NOT NULL CHECK (LENGTH(purse_pub)=32)'
+ ',merge_pub BYTEA NOT NULL CHECK (LENGTH(merge_pub)=32)'
+ ',purse_creation INT8 NOT NULL'
+ ',purse_expiration INT8 NOT NULL'
+ ',h_contract_terms BYTEA NOT NULL CHECK (LENGTH(h_contract_terms)=64)'
+ ',age_limit INT4 NOT NULL'
+ ',flags INT4 NOT NULL'
+ ',in_reserve_quota BOOLEAN NOT NULL DEFAULT(FALSE)'
+ ',was_decided BOOLEAN NOT NULL DEFAULT(FALSE)'
+ ',amount_with_fee taler_amount NOT NULL'
+ ',purse_fee taler_amount NOT NULL'
+ ',balance taler_amount NOT NULL DEFAULT (0,0)'
+ ',purse_sig BYTEA NOT NULL CHECK(LENGTH(purse_sig)=64)'
+ ',PRIMARY KEY (purse_pub)'
+ ') %s ;'
+ ,table_name
+ ,'PARTITION BY HASH (purse_pub)'
+ ,partition_suffix
+ );
+ PERFORM comment_partitioned_table(
+ 'Requests establishing purses, associating them with a contract but without a target reserve'
+ ,table_name
+ ,partition_suffix
+ );
+ PERFORM comment_partitioned_column(
+ 'Public key of the purse'
+ ,'purse_pub'
+ ,table_name
+ ,partition_suffix
+ );
+ PERFORM comment_partitioned_column(
+ 'Local time when the purse was created. Determines applicable purse fees.'
+ ,'purse_creation'
+ ,table_name
+ ,partition_suffix
+ );
+ PERFORM comment_partitioned_column(
+ 'When the purse is set to expire'
+ ,'purse_expiration'
+ ,table_name
+ ,partition_suffix
+ );
+ PERFORM comment_partitioned_column(
+ 'Hash of the contract the parties are to agree to'
+ ,'h_contract_terms'
+ ,table_name
+ ,partition_suffix
+ );
+ PERFORM comment_partitioned_column(
+ 'see the enum TALER_WalletAccountMergeFlags'
+ ,'flags'
+ ,table_name
+ ,partition_suffix
+ );
+ PERFORM comment_partitioned_column(
+ 'set to TRUE if this purse currently counts against the number of free purses in the respective reserve'
+ ,'in_reserve_quota'
+ ,table_name
+ ,partition_suffix
+ );
+ PERFORM comment_partitioned_column(
+ 'Total amount expected to be in the purse'
+ ,'amount_with_fee'
+ ,table_name
+ ,partition_suffix
+ );
+ PERFORM comment_partitioned_column(
+ 'Purse fee the client agreed to pay from the reserve (accepted by the exchange at the time the purse was created). Zero if in_reserve_quota is TRUE.'
+ ,'purse_fee'
+ ,table_name
+ ,partition_suffix
+ );
+ PERFORM comment_partitioned_column(
+ 'Total amount actually in the purse (updated)'
+ ,'balance'
+ ,table_name
+ ,partition_suffix
+ );
+ PERFORM comment_partitioned_column(
+ 'Signature of the purse affirming the purse parameters, of type TALER_SIGNATURE_PURSE_REQUEST'
+ ,'purse_sig'
+ ,table_name
+ ,partition_suffix
+ );
+END
+$$;
+
+CREATE FUNCTION constrain_table_purse_requests(
+ IN partition_suffix TEXT
+)
+RETURNS VOID
+LANGUAGE plpgsql
+AS $$
+DECLARE
+ table_name TEXT DEFAULT 'purse_requests';
+BEGIN
+ table_name = concat_ws('_', table_name, partition_suffix);
+
+ EXECUTE FORMAT (
+ 'CREATE INDEX ' || table_name || '_merge_pub '
+ 'ON ' || table_name || ' '
+ '(merge_pub);'
+ );
+ EXECUTE FORMAT (
+ 'CREATE INDEX ' || table_name || '_purse_expiration '
+ 'ON ' || table_name || ' '
+ '(purse_expiration) ' ||
+ 'WHERE NOT was_decided;'
+ );
+ EXECUTE FORMAT (
+ 'ALTER TABLE ' || table_name ||
+ ' ADD CONSTRAINT ' || table_name || '_purse_requests_serial_id_key'
+ ' UNIQUE (purse_requests_serial_id) '
+ );
+END
+$$;
+
+
+INSERT INTO exchange_tables
+ (name
+ ,version
+ ,action
+ ,partitioned
+ ,by_range)
+ VALUES
+ ('purse_requests'
+ ,'exchange-0002'
+ ,'create'
+ ,TRUE
+ ,FALSE),
+ ('purse_requests'
+ ,'exchange-0002'
+ ,'constrain'
+ ,TRUE
+ ,FALSE);