#ifndef ZPM_H_
#define ZPM_H_ 1

#include <stdint.h>
#include <stdio.h>
#include <time.h>
#include <limits.h>
#include <stdarg.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>

#include "sqlite3.h"
#include "lib/jsw/jsw_atree.h"

#define ZPM_HASH_STRLEN 64

#ifdef PATH_MAX
#define ZPM_PATH_MAX PATH_MAX
#else
#define ZPM_PATH_MAX 256
#endif

#define ZPM_LOCAL_DB "/var/lib/zpm/local.db"

#define ZPM_PACKAGE_NAME_MAX 191
#define ZPM_PACKAGE_VERSION_MAX 58
#define ZPM_PACKAGE_RELEASE_MAX 4
#define ZPM_PACKAGE_ID_MAX 255

#define ZPM_TAG_MAX 15

struct zpm_package;

struct zpm {
	sqlite3 *db;
	char *path; /* path to db file */
	int error;
	int dbresult;
	char *dberrmsg;
	char *errmsg;
	char *pkgid;
	struct zpm_package *current_package;
};

struct zpm_stat {
	struct stat st;
	int configuration;
	char hash[65]; /* length + room for a nul byte */
	char diskhash[65]; /* hash of actual file on disk */
	char *target; /* malloced link target */
};

struct zpm_dependency {
	char minpkg[ZPM_PACKAGE_ID_MAX+1];
	char maxpkg[ZPM_PACKAGE_ID_MAX+1];
	struct zpm_dependency *next;
};

struct zpm_tag {
	char tag[ZPM_TAG_MAX+1];
	struct zpm_tag *next;
};

struct zpm_package {
	struct zpm *zpm;
	struct jsw_hash_t *ht;

	/* char pointers are just pointers into the hash table */
	/* integers/times and such are passed through atoi */
	/* tags and licenses are trees, NULL if not fetched */
	char *name;
	char *version;
	int release;
	char *id;
	/* null if tags not collected */
	//struct zpm_tree *tags;
	char *description;
	char *architecture;
	char *url;
	char *status; /* integer code ? */
	//struct zpm_tree *licenses;
	time_t build_time;
	time_t install_time;
	char checksum[ZPM_HASH_STRLEN+1];
	struct zpm_package *next;
};

int zpm_parse_package(char *pstr, char *name, char *ver, int *rel);
char *zpm_findpkg(struct zpm *zpm, char *pkgstr, char *where);
char *zpm_findpkg_range(struct zpm *zpm, char *minpkg, char *maxpkg, char *where, int wantleast);
int zpm_findhash(struct zpm *zpm, char *find, char *dest);
char *zpm_findlib(struct zpm *zpm, char *soname, char *where);
int zpm_libraries_needed(struct zpm *zpm, char *pkgid, jsw_atree_t *list); 
int zpm_packages_needed(struct zpm *zpm, char *pkgid, jsw_atree_t *list);
int zpm_quote(char *value, char *dest, size_t n);

struct zpm_file {
	char *package;
	char *version;
	int release;

	char *status;
	char *path;
	char *target;

	mode_t mode;

	//struct zpm_tree *tags;
	
	char *owner;
	char *group;
	gid_t gid;
	uid_t uid;

	int configuration;
	time_t mtime;
	char type;
	dev_t device;
	char hash[ZPM_HASH_STRLEN+1];
	char confhash[ZPM_HASH_STRLEN+1];
	void *data; /* hook for applications to attach data */
	struct zpm_file *next; /* so you can make a linked list */
};

int zpm_open(struct zpm *pkg, char *path);
int zpm_init(struct zpm *pkg, char *path);
int zpm_pkgname(char *base, char *version, int release); /* construct a package file name */

/* flags for preserving mode, owner, etc */
/* puts hash of import in hash */
/* path can be a hash, with an "INTERNAL" flag, i.e. internally import */
#define ZPM_MODE 0x1
#define ZPM_OWNER 0x2
#define ZPM_MTIME 0x4
#define ZPM_INTERNAL 0x8
#define ZPM_NOBLOB 0x10
/* don't run scripts on install */
#define ZPM_NOSCRIPTS 0x10
/* don't import file to a particular package */
#define ZPM_NOPACKAGE 0x20

int zpm_import(struct zpm *zp, char *path, uint32_t flags, char *hash);

/* tag a file.  relative to "current package" */
int zpm_tag(struct zpm *zp, char *path, char *tags);
/* should this be broken up into separage functions ? */
int zpm_md(struct zpm *zp, char *path, int mode, char *owner, char *group, time_t mtime);

/* export hash to dest */
int zpm_extract(struct zpm *pkg, char *hash, char *path, mode_t mode);

/* export path to dest */
int zpm_export(struct zpm *zp, char *path, uint32_t flags, char *dest);

int zpm_close(struct zpm *zp);

/* attach a signature to a package */
int zpm_sign(struct zpm *z, size_t s, void *signature);

/* set the package info to the nth package, -1 to return count? */
/* further import/exports and such will be relative to this package */
int zpm_package(struct zpm *zp, int n);

/* get file information */
int zpm_stat(struct zpm *z, struct zpm_file *f, int n);

//int zpm_newpkg(struct zpm *z, char *base, char *version, int release);
int zpm_create_package(struct zpm *zpm, char *name, char *ver, int rel); 
int zpm_create_pkgid(struct zpm *zpm, char *pkgstr);

/* transactions */
int zpm_begin(struct zpm *z);
int zpm_commit(struct zpm *z);
int zpm_rollback(struct zpm *z);

/* higher level operations */

/* install or uninstall the package */
/* flag for keeping the blobs in local */
/* what about tag filtering */
int zpm_install(struct zpm *z, struct zpm *local, uint32_t flags);
int zpm_uninstall(struct zpm *local);

/* slurp up the actual blobs */
/* what about versioning them if they change */
int zpm_preserve(struct zpm *local);

/* check file integrity */
int zpm_checkinstall(struct zpm *local);

int zpm_merge(struct zpm *z, struct zpm *src, uint32_t flags);

ssize_t uncompresslzma(void *buf, size_t bufsize, int outfd);
ssize_t zpm_uncompress_cb(void *buf, size_t bufsize, void *cbdata,
		int (*cb)(void *ud, void *buf, size_t bufsize));
void *compresslzma(void *buf, size_t bufsize, size_t *len);

#define SQLERROR(x) fprintf(stderr, "%s %d: %s\n", __func__, __LINE__, (x))
int zpm_hash(char *path, char *hash, uint32_t flags);

/* hex encoded hash, not null terminated */
int zpm_hash_mem(void *mem, size_t size, char *hash); 

int zpm_readopts(struct zpm *pkg, int ac, char **av);

struct zpm_version_info {
	const char *verstr;
	const char *name; int namelen;
	const char *version; int verlen;
	const char *relstr; int rellen;
	int release;
};

int zpm_parse_version(const char *pstr, struct zpm_version_info *info);
int zpm_vercmp(const char *a, const char *b);

/* add vercmp collation to db */
int zpm_addvercmp(struct zpm *pkg);

/* return 1 if database is readonly, 0 if readwrite, or not connected */
int zpm_readonly(struct zpm *z);

int zpm_exec(struct zpm *z, const char *sql, int(*callback)(void *, int, char **, char**), void *arg, char **errmsg);

int zpm_foreach_path(struct zpm *zpm, char *pkgid, char *where,
int (*callback)(void *f, int ncols, char **vals, char **cols),
void *data, char **errmsg);

int zpm_foreach_path_ds(struct zpm *zpm, char *pkgid, char *where,
int (*callback)(struct zpm *, struct zpm_file *, void *), void *cbd);

int zpm_foreach_package(struct zpm *zpm, char *where,
int (*callback)(void *cbdata, int ncols, char **vals, char **cols),
void *data, char **errmsg);

int zpm_script_hash(struct zpm *zpm, char *pkgstr, char *phase, char *hash);
int zpm_script_set(struct zpm *zpm, char *pkgstr, char *phase, char *hash);
int zpm_foreach_script(struct zpm *zpm, char *pkgstr, char *stage, void *cbd,
	       	int (*cb)(void *ud, const char *pkg, const char *stage, const char *hash));

int zpm_package_hash(struct zpm *zpm, char *pkgid, char *hash);
int zpm_package_sethash(struct zpm *zpm, char *pkgid, char *hash);
int zpm_package_checkhash(struct zpm *zpm, char *pkgid, char *hash);
char *zpm_package_gethash(struct zpm *zpm, char *pkgid, char *hash);
int zpm_package_clearhash(struct zpm *zpm, char *pkgid);

sqlite3_stmt *zpm_dbqueryv(struct zpm *zpm, char *query, va_list args);
sqlite3_stmt *zpm_dbquery(struct zpm *zpm, char *query, ...);
char *zpm_db_string(struct zpm *zpm, char *query, ...);
int zpm_db_int(struct zpm *zpm, char *query, ...);
int zpm_db_run(struct zpm *zpm, char *query, ...);
void zpm_seterror(struct zpm *zpm, char *msgfmt, ...);

struct zpm *zpm_clearmem(struct zpm *zpm);

struct zpm_note {
	int64_t id;
	char *ts; /* applications can parse it if they need to */
	char *note;
	char *pkgid;
	char *path;
	char *file;
	char *hash;
	int ack;
};

void zpm_note_ack(struct zpm *zpm, int64_t note);
void zpm_note_unack(struct zpm *zpm, int64_t note);
void zpm_note_del(struct zpm *zpm, int64_t note);
int64_t zpm_note(struct zpm *zpm, struct zpm_note *n, unsigned int flags);
void zpm_note_free(struct zpm_note *n);
int zpm_notes(struct zpm *zpm, int n, struct zpm_note *note);
int64_t zpm_note_next(struct zpm *zpm, struct zpm_note *n);
int64_t zpm_note_add(struct zpm *zpm, char *pkgid, char *path, char *filehash,
		char *notefmt, ...);
int zpm_notes_available(struct zpm *zpm, int flags);

#endif