5. Load Janet config internally

When the server is served from a file, the main config file is loaded from the SQLite database rather than from the file. It will attempt to look for the config file under the keyword @config.

void weewiki_janet_loadconfig_internal(JanetTable *env,
                                       weewiki_d *ww);

void weewiki_janet_loadconfig_internal(JanetTable *env,
                                       weewiki_d *ww)
{
    sqlite3 *db;
    sqlite3_stmt *stmt;
    int rc;

    db = weewiki_db(ww);
    sqlite3_prepare_v2(db,
                       "SELECT value FROM wiki WHERE(key==?1);",
                       -1,
                       &stmt,
                       NULL);
    sqlite3_bind_text(stmt, 1, "@config", -1, NULL);

    rc = sqlite3_step(stmt);

    if (rc == SQLITE_ROW) {
        janet_dostring(env,
                       (const char *)sqlite3_column_text(stmt, 0),
                       NULL, NULL);
    }

    sqlite3_finalize(stmt);
}

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