/******************************************************************************
 *
 *                Copyright (c) 2017-2019 by Löwenware Ltd
 *             Please, refer LICENSE file for legal information
 *
 ******************************************************************************/

/**
 * @file interface.h
 * @author Ilja Kartašov <ik@lowenware.com>
 * @brief Interface header file for AISL SDK modules
 *
 * @see https://lowenware.com/aisl/
 */

#ifndef MODULE_H_1AEFECA5_9341_431B_8194_EA0C2E76B5EA
#define MODULE_H_1AEFECA5_9341_431B_8194_EA0C2E76B5EA

#include <aisl/aisl.h>

#define AX_MODULE_INIT(MOD, END_POINT) \
	do { \
		((AxModule) mod)->end_point = END_POINT; \
		((AxModule) mod)->ep_length = strlen(END_POINT); \
		((AxModule) mod)->on_event = (AxObserver)MOD##_on_event; \
		((AxModule) mod)->ctx_size = sizeof (struct context); \
	} while(0) \

#define AX_MODULE(x) ((AxModule)x)

/** @brief AISL module structure pointer
 */
typedef struct ax_module * AxModule;


/** @brief Pointer to AISL stream event observer
 */
typedef AislStatus
(* AxObserver)(AxModule mod, const struct aisl_evt *evt);



/** @brief Root level AISL mod's structure
 */
struct ax_module {
	const char *end_point;      /**< Root mod's URL or NULL */
	AxObserver on_event;        /**< Mod's stream event observer */
	size_t     ctx_size;        /**< Mod's context size */
	uint32_t   ep_length;       /**< End-Point length */
};


/** @brief Wrapper function that calles mod's observer
 *  @param mod an instance of AxModule#
 *  @param evt an AISL stream event
 *  @return AISL_SUCCESS if event handled, AISL_IDLE if event not handled or an
 *  error code
 */
AislStatus
ax_module_on_event(AxModule mod, const struct aisl_evt *evt);

#endif /* !MODULE;_H */