/* dblayer.h - Database layer for ck -----------------------------------*- C -*-
 *
 * This file is part of ck, the config keeper
 * 
 * -----------------------------------------------------------------------------
 *
 * Copyright (C) 2018  Anastasis Grammenos
 * GPLv3 (see LICENCE for the full notice)
 *
 * -----------------------------------------------------------------------------
 *
 * Give access to the database.
 *
 * -------------------------------------------------------------------------- */
#ifndef DBLAYER_H
#define DBLAYER_H

#include <sqlite3.h>

#include "actions.h"

enum SqlErrors {
  SQL_NO_ERR = 0,
  SQL_ERR_NO_DB_FILE,
  SQL_ERR_NO_TABLES,
  SQL_ERR_SQLITE,
  SQL_CONFIG_PATH_EXISTS,
  SQL_ERR_PRIMARY_REDEFINITION
};
typedef enum SqlErrors SqlError;

typedef struct DBstruct DB;
struct DBstruct {
  sqlite3 *ptr;
  SqlError error;
};

extern int db_exists(const UserOpt *opt);

/* Open the db file. On fail return null pointer to db 
 * and the corresponding SQL error (NO_DB_FILE | NO_TABLES)*/
extern DB open_DB(const UserOpt *opt);

extern void close_DB(DB *db);
extern int program_exists(DB *db, const char *pName);
extern int get_program_paths(DB *db, cklist *ckl, const char* pName, int bName, int attr, const char *home);

/********/
/* init */
/********/

/* Create the tables required for the ckdb */
extern void init_make_tables(DB *db);
extern DB init_make_DB(const UserOpt *opt);

/*******/
/* add */
/*******/

/* Returns 1 in error, 0 otherwise */
extern int add_transaction_try(DB *db, const AddOpt * const opt, const char *home);

/********/
/* edit */
/********/

extern int edit_get_prime_config_from_program(DB *db, char *pName, char *ret, int *secret);
extern int get_config_number(DB *db, char *pName);
extern int edit_get_config(DB *db, const char *pName, char *ret, const char *cName, int *sec);

/********/
/* list */
/********/

extern int list_get_paths(DB *db, cklist *ckl, int bName, int attr, const char *home);
extern int list_get_programs(DB *db, cklist *ckl);
extern int list_get_path_program_tree(DB *db, cklist *ckl, int bName, int attr, const char *home);

/*******/
/* del */
/*******/

extern int del_transaction_try(DB *db, char *arg, int conf);

/***********/
/* restore */
/***********/

extern int restore_configs_exists(DB *db, Conf *conf, const char *pName, cklist *from, cklist *to);
extern int restore_all_exist(DB *db, Conf *conf, cklist *from, cklist *to);
#endif /* DBLAYER_H */