libmp/include/database.h

#pragma once
#include "package.h"
#include <sqlite3.h>

#define HASH_LEN 32

enum lm_query_index {
  QUERY_CREATE_PACKAGE_TABLE    = 0,
  QUERY_INSERT_PACKAGE_SINGLE   = 1,
  QUERY_SELECT_PACKAGE_SINGLE_1 = 2,
  QUERY_SELECT_PACKAGE_SINGLE_2 = 3,
  QUERY_DELETE_PACKAGE_SINGLE   = 4,
  QUERY_SELECT_PACKAGE_ALL      = 5,
  QUERY_CREATE_FILE_TABLE       = 6,
  QUERY_INSERT_FILE_SINGLE      = 7,
  QUERY_DELETE_FILE_ALL         = 8,
  QUERY_SELECT_FILE_SINGLE      = 9,
  QUERY_SELECT_FILE_ALL         = 10,
  QUERY_UPDATE_FILE_1           = 11,
  QUERY_UPDATE_FILE_2           = 12,
};

enum lm_columns {
  FILES_COLUMN_PATH    = 1,
  FILES_COLUMN_HASH    = 2,
  FILES_COLUMN_KEEP    = 3,
  FILES_COLUMN_PACKAGE = 4,

  PACKAGES_COLUMN_NAME    = 1,
  PACKAGES_COLUMN_VERSION = 2,
  PACKAGES_COLUMN_DESC    = 3,
  PACKAGES_COLUMN_SIZE    = 4,
  PACKAGES_COLUMN_DEPENDS = 5,
};

extern char *queries[];

typedef struct lm_database {
  sqlite3      *packages_db;
  sqlite3_stmt *packages_st;

  sqlite3      *files_db;
  sqlite3_stmt *files_st;

  lm_pkg_t *pkg;
  char     *dir;
} lm_database_t;

lm_database_t *lm_database_new(char *path);
void           lm_database_free(lm_database_t *db);
bool           lm_database_step_all(sqlite3_stmt *st);

bool lm_database_package_find(
    lm_database_t *db, lm_pkg_t *pkg, char *name, char *version); // finds a package by its name, package stored in *pkg
bool lm_database_package_next(lm_database_t *db, lm_pkg_t *pkg);  // gets the next package in the database
bool lm_database_package_add(lm_database_t *db, lm_pkg_t *pkg);   // adds a package to the database
bool lm_database_package_del(lm_database_t *db, lm_pkg_t *pkg);   // delete a package from the database
void lm_database_package_next_free(
    lm_database_t *db, lm_pkg_t *pkg); // frees resources used for lm_database_package_next

size_t lm_database_files_count(
    lm_database_t *db, lm_pkg_t *pkg); // returns the count of files associated with a package
bool lm_database_files_contains(
    lm_database_t *db, lm_pkg_t *pkg, char *path); // check if a package contains the given file
bool lm_database_files_matches(
    lm_database_t *db, char *path, char *hash);               // checks if the given file matches with the given hash
bool lm_database_files_iskeep(lm_database_t *db, char *path); // checks if the given file is marked as keep
bool lm_database_files_next(
    lm_database_t *db, lm_pkg_t *pkg, char **path, char **hash, bool *keep); // gets the next file of the package
bool lm_database_files_add(
    lm_database_t *db, lm_pkg_t *pkg, char *path, char *hash); // adds a file to the files database
bool lm_database_files_del(lm_database_t *db, lm_pkg_t *pkg);  // dels all files of belonging to a package
void lm_database_files_next_free(lm_database_t *db, lm_pkg_t *pkg, char **path, char **hash,
    bool *keep); // frees resources used for lm_database_files_next

bool  lm_database_changes_update(lm_database_t *db, lm_pkg_t *pkg, char *file);
char *lm_database_changes_get(lm_database_t *db, lm_pkg_t *pkg);
bool  lm_database_changes_del(lm_database_t *db, lm_pkg_t *pkg);