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/*
This file is part of TALER
(C) 2014 Christian Grothoff (and other contributing authors)
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, If not, see <http://www.gnu.org/licenses/>
*/
/**
* @file merchant/merchant_db.h
* @brief database helper functions used by the merchant
* @author Sree Harsha Totakura <sreeharsha@totakura.in>
*/
#ifndef MERCHANT_DB_H
#define MERCHANT_DB_H
#include <gnunet/gnunet_postgres_lib.h>
#include <taler/taler_util.h>
/**
* Connect to postgresql database
*
* @param cfg the configuration handle
* @return connection to the postgresql database; NULL upon error
*/
PGconn *
MERCHANT_DB_connect (const struct GNUNET_CONFIGURATION_Handle *cfg);
/**
* Disconnect from the database
*
* @param conn database handle to close
*/
void
MERCHANT_DB_disconnect (PGconn *conn);
/**
* Initialize merchant tables
*
* @param conn the connection handle to postgres db.
* @param tmp GNUNET_YES if the tables are to be made temporary i.e. their
* contents are dropped when the @a conn is closed
* @return GNUNET_OK upon success; GNUNET_SYSERR upon failure
*/
int
MERCHANT_DB_initialize (PGconn *conn, int tmp);
/**
* Inserts a contract record into the database and if successfull returns the
* serial number of the inserted row.
*
* @param conn the database connection
* @param expiry the time when the contract will expire
* @param amount the taler amount corresponding to the contract
* @param c_id this contract's identification number
* @param desc descripition of the contract
* @param nounce a random 64-bit nounce
* @param product description to identify a product
* @return GNUNET_OK on success, GNUNET_SYSERR upon error
*/
uint32_t
MERCHANT_DB_contract_create (PGconn *conn,
const struct GNUNET_TIME_Absolute *expiry,
const struct TALER_Amount *amount,
uint64_t c_id,
const char *desc,
uint64_t nounce,
uint64_t product);
long long
MERCHANT_DB_get_contract_product (PGconn *conn,
uint64_t contract_id);
unsigned int
MERCHANT_DB_checkout_create (PGconn *conn,
struct GNUNET_CRYPTO_rsa_PublicKey *coin_pub,
uint64_t transaction_id,
struct TALER_Amount *amount,
struct GNUNET_CRYPTO_rsa_Signature *coin_sig);
long long
MERCHANT_DB_get_checkout_product (PGconn *conn,
struct GNUNET_CRYPTO_rsa_PublicKey *coin_pub);
#endif /* MERCHANT_DB_H */
/* end of merchant-db.h */
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