/* (C) 2008 by Jan Luebbe <jluebbe@debian.org>
 * (C) 2009-2016 by Holger Hans Peter Freyther <zecke@selfish.org>
 * (C) 2014 by Alexander Chemeris <Alexander.Chemeris@fairwaves.co>
 * All Rights Reserved
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation; either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program 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 Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

#include <osmocom/msc/debug.h>
#include <osmocom/msc/db.h>
#include <osmocom/msc/gsm_subscriber.h>
#include <osmocom/msc/gsm_04_11.h>
#include <osmocom/msc/mgcp.h>

#include <osmocom/core/application.h>

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <stdbool.h>
#include <inttypes.h>

static struct gsm_network dummy_net;
static struct gsm_subscriber_group dummy_sgrp;

#define SUBSCR_PUT(sub) \
	sub->group = &dummy_sgrp;	\
	subscr_put(sub);

#define COMPARE(original, copy) \
	if (original->id != copy->id) \
		printf("Ids do not match in %s:%d %llu %llu\n", \
			__FUNCTION__, __LINE__, original->id, copy->id); \
	if (original->lac != copy->lac) \
		printf("LAC do not match in %s:%d %d %d\n", \
			__FUNCTION__, __LINE__, original->lac, copy->lac); \
	if (original->authorized != copy->authorized) \
		printf("Authorize do not match in %s:%d %d %d\n", \
			__FUNCTION__, __LINE__, original->authorized, \
			copy->authorized); \
	if (strcmp(original->imsi, copy->imsi) != 0) \
		printf("IMSIs do not match in %s:%d '%s' '%s'\n", \
			__FUNCTION__, __LINE__, original->imsi, copy->imsi); \
	if (original->tmsi != copy->tmsi) \
		printf("TMSIs do not match in %s:%d '%u' '%u'\n", \
			__FUNCTION__, __LINE__, original->tmsi, copy->tmsi); \
	if (strcmp(original->name, copy->name) != 0) \
		printf("names do not match in %s:%d '%s' '%s'\n", \
			__FUNCTION__, __LINE__, original->name, copy->name); \
	if (strcmp(original->extension, copy->extension) != 0) \
		printf("Extensions do not match in %s:%d '%s' '%s'\n", \
			__FUNCTION__, __LINE__, original->extension, copy->extension); \

/*
 * Create/Store a SMS and then try to load it.
 */
static void test_sms(void)
{
	int rc;
	struct gsm_sms *sms;
	struct gsm_subscriber *subscr;
	subscr = db_get_subscriber(GSM_SUBSCRIBER_IMSI, "9993245423445");
	OSMO_ASSERT(subscr);
	subscr->group = &dummy_sgrp;

	sms = sms_alloc();
	sms->receiver = subscr_get(subscr);

	sms->src.ton = 0x23;
	sms->src.npi = 0x24;
	memcpy(sms->src.addr, "1234", strlen("1234") + 1);

	sms->dst.ton = 0x32;
	sms->dst.npi = 0x42;
	memcpy(sms->dst.addr, subscr->extension, sizeof(subscr->extension));

	memcpy(sms->text, "Text123", strlen("Text123") + 1);
	memcpy(sms->user_data, "UserData123", strlen("UserData123") + 1);
	sms->user_data_len = strlen("UserData123");

	/* random values */
	sms->reply_path_req = 1;
	sms->status_rep_req = 2;
	sms->ud_hdr_ind = 3;
	sms->protocol_id = 4;
	sms->data_coding_scheme = 5;

	rc = db_sms_store(sms);
	sms_free(sms);
	OSMO_ASSERT(rc == 0);

	/* now query */
	sms = db_sms_get_unsent_for_subscr(subscr);
	OSMO_ASSERT(sms);
	OSMO_ASSERT(sms->receiver == subscr);
	OSMO_ASSERT(sms->reply_path_req == 1);
	OSMO_ASSERT(sms->status_rep_req == 2);
	OSMO_ASSERT(sms->ud_hdr_ind == 3);
	OSMO_ASSERT(sms->protocol_id == 4);
	OSMO_ASSERT(sms->data_coding_scheme == 5);
	OSMO_ASSERT(sms->src.ton == 0x23);
	OSMO_ASSERT(sms->src.npi == 0x24);
	OSMO_ASSERT(sms->dst.ton == 0x32);
	OSMO_ASSERT(sms->dst.npi == 0x42);
	OSMO_ASSERT(strcmp((char *) sms->text, "Text123") == 0);
	OSMO_ASSERT(sms->user_data_len == strlen("UserData123"));
	OSMO_ASSERT(strcmp((char *) sms->user_data, "UserData123") == 0);

	/* Mark the SMS as delivered */
	db_sms_mark_delivered(sms);
	sms_free(sms);

	sms = db_sms_get_unsent_for_subscr(subscr);
	OSMO_ASSERT(!sms);

	subscr_put(subscr);
}

static void test_sms_migrate(void)
{
	struct gsm_subscriber *rcv_subscr;
	struct gsm_sms *sms;
	static const uint8_t user_data_1[] = {
		0x41, 0xf1, 0xd8, 0x05, 0x22, 0x96, 0xcd, 0x2e,
		0x90, 0xf1, 0xfd, 0x06, 0x00 };
	static const uint8_t user_data_2[] = {
		0x41, 0xf1, 0xd8, 0x05, 0x22, 0x96, 0xcd, 0x2e,
		0xd0, 0xf1, 0xfd, 0x06, 0x00 };

	rcv_subscr = db_get_subscriber(GSM_SUBSCRIBER_IMSI, "901010000001111");
	rcv_subscr->group = &dummy_sgrp;

	sms = db_sms_get(&dummy_net, 1);
	OSMO_ASSERT(sms->id == 1);
	OSMO_ASSERT(sms->receiver == rcv_subscr);
	OSMO_ASSERT(strcmp(sms->text, "Abc. Def. Foo") == 0);
	OSMO_ASSERT(sms->user_data_len == ARRAY_SIZE(user_data_1));
	OSMO_ASSERT(memcmp(sms->user_data, user_data_1, ARRAY_SIZE(user_data_1)) == 0);
	sms_free(sms);

	sms = db_sms_get(&dummy_net, 2);
	OSMO_ASSERT(sms->id == 2);
	OSMO_ASSERT(sms->receiver == rcv_subscr);
	OSMO_ASSERT(strcmp(sms->text, "Abc. Def. Goo") == 0);
	OSMO_ASSERT(sms->user_data_len == ARRAY_SIZE(user_data_2));
	OSMO_ASSERT(memcmp(sms->user_data, user_data_2, ARRAY_SIZE(user_data_2)) == 0);
	sms_free(sms);

	subscr_put(rcv_subscr);
}

static void test_subs(const char *imsi, char *imei1, char *imei2, bool make_ext)
{
	struct gsm_subscriber *alice = NULL, *alice_db;
	char scratch_str[256];

	alice = db_create_subscriber(imsi, GSM_MIN_EXTEN, GSM_MAX_EXTEN,
				     make_ext);
	db_subscriber_assoc_imei(alice, imei1);
	if (imei2)
		db_subscriber_assoc_imei(alice, imei2);
	db_subscriber_alloc_tmsi(alice);
	alice->lac=42;
	db_sync_subscriber(alice);
	/* Get by TMSI */
	snprintf(scratch_str, sizeof(scratch_str), "%"PRIu32, alice->tmsi);
	alice_db = db_get_subscriber(GSM_SUBSCRIBER_TMSI, scratch_str);
	COMPARE(alice, alice_db);
	SUBSCR_PUT(alice_db);
	/* Get by IMSI */
	alice_db = db_get_subscriber(GSM_SUBSCRIBER_IMSI, imsi);
	COMPARE(alice, alice_db);
	SUBSCR_PUT(alice_db);
	/* Get by id */
	snprintf(scratch_str, sizeof(scratch_str), "%llu", alice->id);
	alice_db = db_get_subscriber(GSM_SUBSCRIBER_ID, scratch_str);
	COMPARE(alice, alice_db);
	SUBSCR_PUT(alice_db);
	/* Get by extension */
	alice_db = db_get_subscriber(GSM_SUBSCRIBER_EXTENSION, alice->extension);
	if (alice_db) {
		if (!make_ext)
			printf("FAIL: bogus extension created for IMSI %s\n",
			       imsi);
		COMPARE(alice, alice_db);
		SUBSCR_PUT(alice_db);
	} else if (make_ext)
		printf("FAIL: no subscriber extension for IMSI %s\n", imsi);
	SUBSCR_PUT(alice);
}

int main()
{
	printf("Testing subscriber database code.\n");
	osmo_init_logging(&log_info);
	log_set_print_filename(osmo_stderr_target, 0);

	dummy_net.subscr_group = &dummy_sgrp;
	dummy_sgrp.net         = &dummy_net;

	if (db_init("hlr.sqlite3")) {
		printf("DB: Failed to init database. Please check the option settings.\n");
		return 1;
	}	 
	printf("DB: Database initialized.\n");

	if (db_prepare()) {
		printf("DB: Failed to prepare database.\n");
		return 1;
	}
	printf("DB: Database prepared.\n");

	struct gsm_subscriber *alice = NULL;
	struct gsm_subscriber *alice_db;

	char *alice_imsi = "3243245432345";
	alice = db_create_subscriber(alice_imsi, GSM_MIN_EXTEN, GSM_MAX_EXTEN,
				     true);
	db_sync_subscriber(alice);
	alice_db = db_get_subscriber(GSM_SUBSCRIBER_IMSI, alice->imsi);
	COMPARE(alice, alice_db);
	SUBSCR_PUT(alice_db);
	SUBSCR_PUT(alice);

	test_subs("3693245423445", "1234567890", NULL, true);
	test_subs("9993245423445", "1234567890", "6543560920", true);
	test_subs("3123122223445", "1234567890", NULL, false);
	test_subs("9123121223445", "1234567890", "6543560920", false);

	/* create it again and see it fails */
	alice = db_create_subscriber(alice_imsi, GSM_MIN_EXTEN, GSM_MAX_EXTEN,
				     true);
	OSMO_ASSERT(!alice);

	test_sms();
	test_sms_migrate();

	db_fini();

	printf("Done\n");
	return 0;
}

/* stubs */
void vty_out() {}
void vlr_subscr_disconnected() {}
void vlr_subscr_rx_tmsi_reall_compl() {}
void vlr_subscr_rx_id_resp() {}
void vlr_subscr_rx_auth_resp() {}
void vlr_loc_update() {}
void vlr_proc_acc_req() {}
void vlr_init() {}
unsigned int mgcpgw_client_next_endpoint(struct mgcpgw_client *client)
{ return 0; }
struct msgb *mgcp_msg_crcx(struct mgcpgw_client *mgcp,
			   uint16_t rtp_endpoint, unsigned int call_id,
			   enum mgcp_connection_mode mode)
{ return NULL; }
struct msgb *mgcp_msg_mdcx(struct mgcpgw_client *mgcp,
			   uint16_t rtp_endpoint, const char *rtp_conn_addr,
			   uint16_t rtp_port, enum mgcp_connection_mode mode)
{ return NULL; }
int mgcpgw_client_tx(struct mgcpgw_client *mgcp, struct msgb *msg,
		     mgcp_response_cb_t response_cb, void *priv)
{ return -EINVAL; }
const char *mgcpgw_client_remote_addr_str(struct mgcpgw_client *mgcp)
{ return "0.0.0.0"; }
uint32_t mgcpgw_client_remote_addr_n(struct mgcpgw_client *mgcp)
{ return 0; }
int mgcp_response_parse_params(struct mgcp_response *r)
{ return -EINVAL; }
struct RANAP_Cause;
int iu_tx_release(struct ue_conn_ctx *ctx, const struct RANAP_Cause *cause)
{ return 0; }