const unknownError = (err) => {
	return {
		error   : 'UNKNOWN_ERROR',
		details : {}
	};
}

const unknownResponseFormat = 'UNKNOWN_RESPONSE_FORMAT';

function handlingError (funct, success, error) {
	try {
		success(funct());
	}
	catch (e) {
		// console.log('error', e);
		error(e.name === 'ApiError' ? {
			error   : e.message,
			details : e.details
		} : unknownError(e));
	}
}

module.exports = (method, req, res) => {
	if (req.query.response_format === 'json') {
		handlingError(
			() => ({ response : method(req, res) }),
			(data) => {
				res.sendModed(data);
			},
			(errBody) => {
				res.errorModeOn();
				res.status(400).sendModed(errBody);
			}
		);
	}
	else {
		res.status(400).sendModed(unknownResponseFormat);
	}
}