lindell / JsBarcode

import { EAN5_STRUCTURE } from './constants';

import encode from './encoder';

import Barcode from '../Barcode';

const checksum = (data) => {

	const result = data

		.split('')

		.map(n => +n)

		.reduce((sum, a, idx) => {

			return idx % 2

				? sum + a * 9

				: sum + a * 3;

		}, 0);

	return result % 10;

};

class EAN5 extends Barcode {

	constructor(data, options) {

		super(data, options);

	}

	valid() {

		return this.data.search(/^[0-9]{5}$/) !== -1;

	}

	encode() {

		const structure = EAN5_STRUCTURE[checksum(this.data)];

		return {

			data: '1011' + encode(this.data, structure, '01'),

			text: this.text

		};

	}

}

export default EAN5;