#ifndef APIMAGIC_H
#define APIMAGIC_H

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

#include <cparser/ast/entity.h>
#include <cparser/driver/c_driver.h>
#include <cparser/driver/driver_t.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

enum amgc_action_type {
	AMGC_ACTION_NONE,
	AMGC_ACTION_OUTPUT,
};

enum amgc_output_action {
	AMGC_OUTPUT_DEFINE,
	AMGC_OUTPUT_ENUM,
	AMGC_OUTPUT_TYPEDEF,
	AMGC_OUTPUT_STRUCT,
	AMGC_OUTPUT_UNION,
	AMGC_OUTPUT_FUNCTION,
	AMGC_LIST_DEFINE,
	AMGC_LIST_ENUM,
	AMGC_LIST_TYPEDEF,
	AMGC_LIST_STRUCT,
	AMGC_LIST_UNION,
	AMGC_LIST_FUNCTION,
};

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

struct amgc_action {
	enum amgc_action_type		type;
	int				action;
	const char *			symbol;
	const char *			filter;
};

struct amgc_common_ctx {
	uint64_t			drvflags;
	uint64_t			actflags;
	uint64_t			fmtflags;
	const struct amgc_action *	actions;
	struct compilation_env_t *	ccenv;
	enum lang_standard_t		std;
};

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_meta {
	int	ndefines;
	int	nenums;
	int	nenumvals;
	int	ntypedefs;
	int	nstructs;
	int	nunions;
	int	nfunctions;
	int	ngenerated;
};

struct amgc_define {
	const pp_definition_t *		symbol;
	const char *			definition;
	const char *			altname;
};

struct amgc_entity {
	const union entity_t *		entity;
	const char * 			altname;
	int 				enumval;
	bool 				fmbstr;
	bool 				futf16;
	bool				fset;
	bool				fexclude;
};

struct amgc_unit_entities {
	struct amgc_define *		defines;
	struct amgc_entity *		enums;
	struct amgc_entity *		enumvals;
	struct amgc_entity *		typedefs;
	struct amgc_entity *		structs;
	struct amgc_entity *		unions;
	struct amgc_entity *		functions;
	struct amgc_entity *		generated;
};

struct amgc_unit_ctx {
	const char * const *		path;
	const struct amgc_input *	map;
	const struct amgc_common_ctx *	cctx;
	const struct amgc_unit_meta *	meta;
	const struct amgc_unit_entities*entities;
	const struct compilation_unit_t*ccunit;
	void *				any;
	int				status;
	int				nerrors;
};

struct amgc_layout {
	const char *	header;
	const char *	footer;
	int		symwidth;
	int		tabwidth;
};

/* 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 *);

/* driver helper api */
amgc_api int  amgc_lang_std_from_string	(const char * std);

/* utility api */
amgc_api int  amgc_list_unit_defines	(const struct amgc_unit_ctx *, const struct amgc_layout *, FILE *);
amgc_api int  amgc_list_unit_enums	(const struct amgc_unit_ctx *, const struct amgc_layout *, FILE *);
amgc_api int  amgc_list_unit_typedefs	(const struct amgc_unit_ctx *, const struct amgc_layout *, FILE *);
amgc_api int  amgc_list_unit_structs	(const struct amgc_unit_ctx *, const struct amgc_layout *, FILE *);
amgc_api int  amgc_list_unit_unions	(const struct amgc_unit_ctx *, const struct amgc_layout *, FILE *);
amgc_api int  amgc_list_unit_functions	(const struct amgc_unit_ctx *, const struct amgc_layout *, FILE *);

amgc_api int  amgc_output_unit_defines	(const struct amgc_unit_ctx *, const struct amgc_layout *, FILE *);
amgc_api int  amgc_output_unit_enums	(const struct amgc_unit_ctx *, const struct amgc_layout *, FILE *);
amgc_api int  amgc_output_unit_typedefs	(const struct amgc_unit_ctx *, const struct amgc_layout *, FILE *);
amgc_api int  amgc_output_unit_structs	(const struct amgc_unit_ctx *, const struct amgc_layout *, FILE *);
amgc_api int  amgc_output_unit_unions	(const struct amgc_unit_ctx *, const struct amgc_layout *, FILE *);
amgc_api int  amgc_output_unit_functions(const struct amgc_unit_ctx *, const struct amgc_layout *, FILE *);

/* utility helper api */
amgc_api int  amgc_get_entity_index	(const struct amgc_entity[], const char *);
amgc_api int  amgc_get_define_index	(const struct amgc_unit_ctx *, const char *);
amgc_api int  amgc_get_enum_index	(const struct amgc_unit_ctx *, const char *);
amgc_api int  amgc_get_typedef_index	(const struct amgc_unit_ctx *, const char *);
amgc_api int  amgc_get_struct_index	(const struct amgc_unit_ctx *, const char *);
amgc_api int  amgc_get_union_index	(const struct amgc_unit_ctx *, const char *);
amgc_api int  amgc_get_function_index	(const struct amgc_unit_ctx *, const char *);

amgc_api int  amgc_output_pad_symbol	(const char *, const struct amgc_layout *, FILE *);
amgc_api int  amgc_output_unit_enum	(const struct amgc_unit_ctx *, const union entity_t *, const struct amgc_layout *, FILE *);
amgc_api int  amgc_output_custom_enum	(const struct amgc_entity *, const struct amgc_entity[], const struct amgc_layout *, FILE *);

/* low-level api */
amgc_api int  amgc_init_unit_meta	(const struct amgc_unit_ctx *, struct amgc_unit_meta *);

amgc_api int  amgc_get_unit_entities	(const struct amgc_unit_ctx *, struct amgc_unit_meta *, struct amgc_unit_entities **);
amgc_api void amgc_free_unit_entities	(struct amgc_unit_entities *);

amgc_api int  amgc_get_enum_members	(const struct amgc_unit_ctx *, const union entity_t *, struct amgc_entity **);
amgc_api void amgc_free_enum_members	(struct amgc_entity *);

#ifdef __cplusplus
}
#endif

#endif