const { spawn } = require('child_process');

function isEnabled(parameter) {
    return isSet(parameter?.enabled) && parameter.enabled === true;
}

function isDisabled(parameter) {
    return isSet(parameter?.enabled) && parameter.enabled === false;
}

function isSet(parameter) {
    return parameter !== undefined;
}

function isUnset(parameter) {
    return !isSet(parameter);
}

async function sleep(ms) {
    if (isNaN(ms)) {
        return;
    }
    return new Promise((resolve, reject) => {
        setTimeout(resolve, ms);
    });
}

function restart() {
    logger.info('restarting...');
    const args = process.argv;
    const cmd = args[0];
    args.shift();
    const newProcess = spawn(cmd, args, { detached: true, stdio: 'ignore' });
    newProcess.unref();
    newProcess.on('error', (error) => {
        logger.error('encountered an error restarting: ' + error);
    });
    newProcess.on('spawn', () => {
        logger.warn('spawned process with pid \'' + newProcess.pid + '\'');
        process.exit(0);
    });
}

module.exports = {
    isEnabled,
    isDisabled,
    isSet,
    isUnset,
    sleep,
    restart
}