#ifndef APIMAGIC_H
#define APIMAGIC_H

#include <stdint.h>
#include <stdio.h>

#include "apimagic_api.h"

#ifdef __cplusplus
extern "C" {
#endif

/* pre-alpha */
#ifndef AMGC_APP
#ifndef AMGC_PRE_ALPHA
#error  libapimagic: pre-alpha: ABI is not final!
#error  to use the library, please pass -DAMGC_PRE_ALPHA to the compiler.
#endif
#endif

/* status codes */
#define AMGC_OK				0x00
#define AMGC_USAGE			0x01
#define AMGC_BAD_OPT			0x02
#define AMGC_BAD_OPT_VAL		0x03
#define AMGC_IO_ERROR			0xA0
#define AMGC_MAP_ERROR			0xA1
#define AMGC_INIT_ERROR			0xA2

/* driver flags */
#define AMGC_DRIVER_VERBOSITY_NONE	0x0000
#define AMGC_DRIVER_VERBOSITY_ERRORS	0x0001
#define AMGC_DRIVER_VERBOSITY_STATUS	0x0002
#define AMGC_DRIVER_VERBOSITY_USAGE	0x0004
#define AMGC_DRIVER_CLONE_VECTOR	0x0008

#define AMGC_DRIVER_VERSION		0x0010
#define AMGC_DRIVER_DRY_RUN		0x0020

/* unit action flags */

struct amgc_input {
	void *	addr;
	size_t	size;
};

struct amgc_common_ctx {
	uint64_t			drvflags;
	uint64_t			actflags;
	uint64_t			fmtflags;
};

struct amgc_driver_ctx {
	const char **			units;
	const char *			program;
	const char *			module;
	const struct amgc_common_ctx *	cctx;
	void *				any;
	int				status;
	int				nerrors;
};

struct amgc_unit_ctx {
	const char * const *		path;
	const struct amgc_input *	map;
	const struct amgc_common_ctx *	cctx;
	void *				any;
	int				status;
	int				nerrors;
};

/* driver api */
amgc_api int  amgc_get_driver_ctx	(const char ** argv, const char ** envp, uint32_t flags, struct amgc_driver_ctx **);
amgc_api int  amgc_create_driver_ctx	(const struct amgc_common_ctx *, struct amgc_driver_ctx **);
amgc_api void amgc_free_driver_ctx	(struct amgc_driver_ctx *);

amgc_api int  amgc_get_unit_ctx		(const struct amgc_driver_ctx *, const char * path, struct amgc_unit_ctx **);
amgc_api void amgc_free_unit_ctx	(struct amgc_unit_ctx *);

amgc_api int  amgc_map_input		(int fd, const char * path, int prot, struct amgc_input *);
amgc_api int  amgc_unmap_input		(struct amgc_input *);

/* utility api */

#ifdef __cplusplus
}
#endif

#endif