1 files changed, 143 insertions, 0 deletions
diff --git a/src/exchangedb/0002-purse_decision.sql b/src/exchangedb/0002-purse_decision.sql
new file mode 100644
index 000000000..091bd468b
--- /dev/null
+++ b/src/exchangedb/0002-purse_decision.sql
@@ -0,0 +1,143 @@
+--
+-- 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_decision(
+  IN partition_suffix TEXT DEFAULT NULL
+)
+RETURNS VOID
+LANGUAGE plpgsql
+AS $$
+DECLARE
+  table_name TEXT DEFAULT 'purse_decision';
+BEGIN
+  PERFORM create_partitioned_table(
+    'CREATE TABLE %I '
+      '(purse_decision_serial_id BIGINT GENERATED BY DEFAULT AS IDENTITY'
+      ',purse_pub BYTEA NOT NULL CHECK (LENGTH(purse_pub)=32)'
+      ',action_timestamp INT8 NOT NULL'
+      ',refunded BOOL NOT NULL'
+      ',PRIMARY KEY (purse_pub)'
+    ') %s ;'
+    ,table_name
+    ,'PARTITION BY HASH (purse_pub)'
+    ,partition_suffix
+  );
+  PERFORM comment_partitioned_table(
+     'Purses that were decided upon (refund or merge)'
+    ,table_name
+    ,partition_suffix
+  );
+  PERFORM comment_partitioned_column(
+     'Public key of the purse'
+    ,'purse_pub'
+    ,table_name
+    ,partition_suffix
+  );
+END
+$$;
+
+CREATE FUNCTION constrain_table_purse_decision(
+  IN partition_suffix TEXT
+)
+RETURNS VOID
+LANGUAGE plpgsql
+AS $$
+DECLARE
+  table_name TEXT DEFAULT 'purse_decision';
+BEGIN
+  table_name = concat_ws('_', table_name, partition_suffix);
+  EXECUTE FORMAT (
+    'ALTER TABLE ' || table_name ||
+    ' ADD CONSTRAINT ' || table_name || '_purse_action_serial_id_key'
+    ' UNIQUE (purse_decision_serial_id) '
+  );
+END
+$$;
+
+
+CREATE OR REPLACE FUNCTION purse_decision_insert_trigger()
+  RETURNS trigger
+  LANGUAGE plpgsql
+  AS $$
+BEGIN
+  UPDATE purse_requests
+     SET was_decided=TRUE
+   WHERE purse_pub=NEW.purse_pub;
+  IF NEW.refunded
+  THEN
+    INSERT INTO coin_history
+      (coin_pub
+      ,table_name
+      ,serial_id)
+    SELECT
+      pd.coin_pub
+     ,'purse_decision'
+     ,NEW.purse_decision_serial_id
+    FROM purse_deposits pd
+    WHERE purse_pub = NEW.purse_pub;
+  ELSE
+    INSERT INTO reserve_history
+      (reserve_pub
+      ,table_name
+      ,serial_id)
+    SELECT
+      reserve_pub
+     ,'purse_decision'
+     ,NEW.purse_decision_serial_id
+    FROM purse_merges
+    WHERE purse_pub=NEW.purse_pub;
+  END IF;
+  RETURN NEW;
+END $$;
+COMMENT ON FUNCTION purse_decision_insert_trigger()
+  IS 'Automatically generate coin history entry and update decision status for the purse.';
+
+
+CREATE FUNCTION master_table_purse_decision()
+RETURNS VOID
+LANGUAGE plpgsql
+AS $$
+BEGIN
+  CREATE TRIGGER purse_decision_on_insert
+    AFTER INSERT
+     ON purse_decision
+     FOR EACH ROW EXECUTE FUNCTION purse_decision_insert_trigger();
+END $$;
+
+
+INSERT INTO exchange_tables
+    (name
+    ,version
+    ,action
+    ,partitioned
+    ,by_range)
+  VALUES
+    ('purse_decision'
+    ,'exchange-0002'
+    ,'create'
+    ,TRUE
+    ,FALSE),
+    ('purse_decision'
+    ,'exchange-0002'
+    ,'constrain'
+    ,TRUE
+    ,FALSE),
+    ('purse_decision'
+    ,'exchange-0002'
+    ,'master'
+    ,TRUE
+    ,FALSE);