#ifndef NTUX_H
#define NTUX_H

#include <stdint.h>

#include "ntux_api.h"

#ifdef __cplusplus
extern "C" {
#endif

/* pre-alpha */
#ifndef NTUX_APP
#ifndef NTUX_PRE_ALPHA
#error  libntux: pre-alpha: ABI is not final!
#error  to use the library, please pass -DNTUX_PRE_ALPHA to the compiler.
#endif
#endif

/* status codes */
#define NTUX_OK				0x00
#define NTUX_USAGE			0x01
#define NTUX_ERROR			0x02

/* driver flags */
#define NTUX_DRIVER_VERBOSITY_NONE	0x0000
#define NTUX_DRIVER_VERBOSITY_ERRORS	0x0001
#define NTUX_DRIVER_VERBOSITY_STATUS	0x0002
#define NTUX_DRIVER_VERBOSITY_USAGE	0x0004
#define NTUX_DRIVER_CLONE_VECTOR	0x0008

#define NTUX_DRIVER_VERSION		0x0010
#define NTUX_DRIVER_DRY_RUN		0x0020

#define NTUX_DRIVER_ANNOTATE_ALWAYS	0x10000000
#define NTUX_DRIVER_ANNOTATE_NEVER	0x20000000
#define NTUX_DRIVER_ANNOTATE_FULL	0x40000000

/* error flags */
#define NTUX_ERROR_TOP_LEVEL		0x0001
#define NTUX_ERROR_NESTED		0x0002
#define NTUX_ERROR_CHILD		0x0004
#define NTUX_ERROR_CUSTOM		0x0008
#define NTUX_ERROR_NATIVE		0x0010

enum ntux_custom_error {
	NTUX_ERR_FLOW_ERROR,
	NTUX_ERR_FLEE_ERROR,
	NTUX_ERR_LDSO_INIT,
};

enum ntux_cmd {
	NTUX_CMD_DEFAULT,
	NTUX_CMD_STAT,
	NTUX_CMD_SPAWN,
	NTUX_CMD_STRACE,
};

struct ntux_source_version {
	int		major;
	int		minor;
	int		revision;
	const char *	commit;
};

struct ntux_error_info {
	const struct ntux_driver_ctx *	edctx;
	const struct ntux_unit_ctx *	euctx;
	const char *			eunit;
	int				esyscode;
	int				elibcode;
	const char *			efunction;
	int				eline;
	unsigned			eflags;
	void *				eany;
};

struct ntux_common_ctx {
	uint64_t			drvflags;
	uint64_t			actflags;
	uint64_t			fmtflags;
	enum ntux_cmd			cmd;
	uint32_t			state;
	char **				sargv;
	char **				senvp;
	const char *			loader;
	const char *			logfile;
	uint32_t			sysmask[16];
	uint32_t			dbgmask[16];
	uint32_t			osmask [32];
};

struct ntux_driver_ctx {
	const char **			units;
	const char *			program;
	const char *			module;
	const struct ntux_common_ctx *	cctx;
	struct ntux_error_info **	errv;
	void *				any;
};

struct ntux_unit_ctx {
	const char * const *		path;
	void *				any;
};

/* package info */
ntux_api				const struct ntux_source_version * ntux_source_version(void);

/* driver api */
ntux_api int  ntux_get_driver_ctx	(char ** argv, char ** envp, uint32_t flags, struct ntux_driver_ctx **);
ntux_api int  ntux_create_driver_ctx	(const struct ntux_common_ctx *, struct ntux_driver_ctx **);
ntux_api void ntux_free_driver_ctx	(struct ntux_driver_ctx *);

/* cmd api */
ntux_api int  ntux_cmd_stat		(const struct ntux_driver_ctx *, const char *);
ntux_api int  ntux_cmd_spawn		(const struct ntux_driver_ctx *);
ntux_api int  ntux_cmd_strace		(const struct ntux_driver_ctx *);

/* utility api */
ntux_api int  ntux_main			(int, char **, char **);
ntux_api int  ntux_output_error_vector  (const struct ntux_driver_ctx *);

#ifdef __cplusplus
}
#endif

#endif