#ifndef PKG_H_
#define PKG_H_

#define _POSIX_C_SOURCE 200809L
#define _XOPEN_SOURCE 700

#include <libconfig.h>
#include <stdbool.h>
#include <stddef.h>
#include <stdint.h>
#include <sys/stat.h>

#include "common.h"

typedef struct {
	int maj;
	int min;
	int pat;
	char *tag;
}
semver_t;

typedef struct {
	char *dep_name;
	semver_t dep_ver;
}
dep_t;

typedef struct {
	char *conf_name;
	semver_t conf_ver;
}
conf_t;

typedef struct {
	char *pkg_name;
	semver_t pkg_ver;
	char *pkg_desc;
	char *pkg_maint;
	char *pkg_copyright;
  char *pkg_repo;
	dep_t *pkg_dependencies;
	conf_t *pkg_conflicts;
}
gl_pkg_t;

semver_t gl_parse_semver(const char *str);
void gl_free_semver(semver_t *v);
void gl_free_pkg(gl_pkg_t *pkg);

typedef enum {
	GL_CONF_OK = 0,
	GL_CONF_ERR_READ = 1,
	GL_CONF_ERR_MISSING = 2,
	GL_CONF_ERR_TYPE = 3,
	GL_CONF_ERR_INVALID = 4,
	GL_CONF_ERR_SPACE = 5
} gl_conf_status_t;


gl_conf_status_t gl_conf_get_int(const char *path, const char *key, int *out);
gl_conf_status_t gl_conf_repo_keys(const char *path, const char *repo,
		char *out, size_t outlen);
gl_conf_status_t gl_conf_repos(const char *path, char *out, size_t outlen);

/* A repository index (REPO_DESIGN.txt section 4), as gl_index_parse
 * reads it. deps/confs are "NAME VER\n" lines ("" for none). */
typedef struct {
	char *name;
	char *ver;
	char *file;
	char *sha256;
	int64_t size;
	char *deps;
	char *confs;
} gl_index_pkg_t;

typedef struct {
	char *repo;
	int64_t serial;
	int64_t valid_until;
	size_t npkgs;
	gl_index_pkg_t *pkgs;
} gl_index_t;

typedef enum {
	GL_INDEX_OK = 0,
	GL_INDEX_ERR_FORMAT = 1,
	GL_INDEX_ERR_REPO = 2,
	GL_INDEX_ERR_NOMEM = 3
} gl_index_status_t;

gl_index_status_t gl_index_parse(const char *text, size_t len,
		const char *repo, gl_index_t *out);
void gl_index_free(gl_index_t *idx);

bool gl_valid_pkg_ident(const char *s);
int gl_gpm2gpkg(const char *filename, gl_pkg_t *pkg);

#endif