/*
 * Asterisk -- An open source telephony toolkit.
 *
 * Copyright (C) 2013, Digium, Inc.
 *
 * David M. Lee, II <dlee@digium.com>
 *
 * See http://www.asterisk.org for more information about
 * the Asterisk project. Please do not directly contact
 * any of the maintainers of this project for assistance;
 * the project provides a web site, mailing lists and IRC
 * channels for your use.
 *
 * This program is free software, distributed under the terms of
 * the GNU General Public License Version 2. See the LICENSE file
 * at the top of the source tree.
 */

/*! \file
 *
 * \brief Stasis Message API.
 *
 * \author David M. Lee, II <dlee@digium.com>
 */

/*** MODULEINFO
	<support_level>core</support_level>
 ***/

#include "asterisk.h"

ASTERISK_FILE_VERSION(__FILE__, "$Revision$")

#include "asterisk/astobj2.h"
#include "asterisk/stasis.h"
#include "asterisk/utils.h"

/*! \internal */
struct stasis_message_type {
	char *name;
};

static void message_type_dtor(void *obj)
{
	struct stasis_message_type *type = obj;
	ast_free(type->name);
	type->name = NULL;
}

struct stasis_message_type *stasis_message_type_create(const char *name)
{
	RAII_VAR(struct stasis_message_type *, type, NULL, ao2_cleanup);

	type = ao2_alloc(sizeof(*type), message_type_dtor);
	if (!type) {
		return NULL;
	}

	type->name = ast_strdup(name);
	if (!type->name) {
		return NULL;
	}

	ao2_ref(type, +1);
	return type;
}

const char *stasis_message_type_name(const struct stasis_message_type *type)
{
	return type->name;
}

/*! \internal */
struct stasis_message {
	/*! Time the message was created */
	struct timeval timestamp;
	/*! Type of the message */
	struct stasis_message_type *type;
	/*! Message content */
	void *data;
};

static void stasis_message_dtor(void *obj)
{
	struct stasis_message *message = obj;
	ao2_cleanup(message->type);
	ao2_cleanup(message->data);
}

struct stasis_message *stasis_message_create(struct stasis_message_type *type, void *data)
{
	RAII_VAR(struct stasis_message *, message, NULL, ao2_cleanup);

	if (type == NULL || data == NULL) {
		return NULL;
	}

	message = ao2_alloc(sizeof(*message), stasis_message_dtor);
	if (message == NULL) {
		return NULL;
	}

	message->timestamp = ast_tvnow();
	ao2_ref(type, +1);
	message->type = type;
	ao2_ref(data, +1);
	message->data = data;

	ao2_ref(message, +1);
	return message;
}

struct stasis_message_type *stasis_message_type(const struct stasis_message *msg)
{
	if (msg == NULL) {
		return NULL;
	}
	return msg->type;
}

void *stasis_message_data(const struct stasis_message *msg)
{
	if (msg == NULL) {
		return NULL;
	}
	return msg->data;
}

const struct timeval *stasis_message_timestamp(const struct stasis_message *msg)
{
	if (msg == NULL) {
		return NULL;
	}
	return &msg->timestamp;
}