libmp/include/database.h

#pragma once
#include "database.h"
#include "package.h"

#include <sqlite3.h>
#include <stdbool.h>
#include <sys/types.h>

#define HASH_LEN 32

enum lm_query_index {
  QUERY_CREATE_ENTRY_TABLE    = 0,
  QUERY_INSERT_ENTRY_SINGLE   = 1,
  QUERY_SELECT_ENTRY_SINGLE_1 = 2,
  QUERY_SELECT_ENTRY_SINGLE_2 = 3,
  QUERY_DELETE_ENTRY_SINGLE   = 4,
  QUERY_SELECT_ENTRY_ALL      = 5,

  QUERY_CREATE_FILE_TABLE  = 6,
  QUERY_INSERT_FILE_SINGLE = 7,
  QUERY_DELETE_FILE_ALL    = 8,
  QUERY_DELETE_FILE_SINGLE = 9,
  QUERY_SELECT_FILE_ALL    = 10,
  QUERY_SELECT_FILE_SINGLE = 11,
  QUERY_UPDATE_FILE_1      = 12,
  QUERY_UPDATE_FILE_2      = 13,
};

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

  ENTRIES_COLUMN_NAME    = 1,
  ENTRIES_COLUMN_VERSION = 2,
  ENTRIES_COLUMN_DESC    = 3,
  ENTRIES_COLUMN_SIZE    = 4,
  ENTRIES_COLUMN_DEPENDS = 5,
};

extern char *queries[];

typedef lm_pkg_data_t lm_entry_t;

typedef struct lm_database {
  sqlite3      *entries_db;
  sqlite3_stmt *entries_st;

  sqlite3      *files_db;
  sqlite3_stmt *files_st;

  char *dir;
} lm_database_t;

void lm_entry_init(lm_entry_t *entry);
void lm_entry_free(lm_entry_t *entry);

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_entry_find(
    lm_database_t *db, lm_entry_t *out, char *name, char *version); // finds a entry by its name, entry stored in *pkg
bool lm_database_entry_next(lm_database_t *db, lm_entry_t *entry);  // gets the next entry in the database
bool lm_database_entry_add(lm_database_t *db, lm_entry_t *entry);   // adds a entry to the database
bool lm_database_entry_del(lm_database_t *db, lm_entry_t *entry);   // delete a entry from the database
void lm_database_entry_next_free(
    lm_database_t *db, lm_entry_t *entry); // frees resources used for lm_database_entry_next

ssize_t lm_database_files_count(
    lm_database_t *db, lm_entry_t *entry); // returns the count of files associated with a entry
bool lm_database_files_contains(
    lm_database_t *db, lm_entry_t *entry, char *path); // check if a entry 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_entry_t *entry, char **path, char **hash, bool *keep); // gets the next file of the entry
bool lm_database_files_add(
    lm_database_t *db, lm_entry_t *entry, char *path, char *hash); // adds a file to the files database
bool lm_database_files_del(lm_database_t *db, lm_entry_t *entry);  // dels all files of belonging to a entry
bool lm_database_files_del_single(lm_database_t *db, char *path);
void lm_database_files_next_free(lm_database_t *db, lm_entry_t *entry, char **path, char **hash,
    bool *keep); // frees resources used for lm_database_files_next

bool  lm_database_changes_update(lm_database_t *db, lm_entry_t *entry, char *file);
char *lm_database_changes_get(lm_database_t *db, lm_entry_t *entry);
bool  lm_database_changes_del(lm_database_t *db, lm_entry_t *entry);