uin-control-digit-calculator/index.js

Calculates Control Digit for UIN. RU: Модуль расчитывает контрольное значение для УИНа для указания его в платежном поручении.

/**
 * Created by Lev Zabudko on 08.01.2016.
 * Module exports.
 * @public
 */

module.exports.CalculateControlDigit = CalculateControlDigit;
module.exports.Test = Test;


/**
 * Chars weights array for calculations in CalculateControlDigit
 */
var chars = new Array;
//Cyrillic
chars['А'] = 1;
chars['Б'] = 2;
chars['В'] = 3;
chars['Г'] = 4;
chars['Д'] = 5;
chars['Е'] = 6;
chars['Ж'] = 7;
chars['З'] = 8;
chars['И'] = 9;
chars['К'] = 10;
chars['Л'] = 11;
chars['М'] = 12;
chars['Н'] = 13;
chars['О'] = 14;
chars['П'] = 15;
chars['Р'] = 16;
chars['С'] = 17;
chars['Т'] = 18;
chars['У'] = 19;
chars['Ф'] = 20;
chars['Х'] = 21;
chars['Ц'] = 22;
chars['Ч'] = 23;
chars['Ш'] = 24;
chars['Щ'] = 25;
chars['Э'] = 26;
chars['Ю'] = 27;
chars['Я'] = 28;
chars['Ъ'] = 33;
chars['Ы'] = 36;
chars['Ь'] = 42;

//Latin
chars['A'] = 1;
chars['B'] = 3;
chars['E'] = 6;
chars['K'] = 10;
chars['M'] = 12;
chars['H'] = 13;
chars['O'] = 14;
chars['P'] = 16;
chars['C'] = 17;
chars['T'] = 18;
chars['Y'] = 19;
chars['X'] = 21;
chars['D'] = 29;
chars['F'] = 30;
chars['G'] = 31;
chars['I'] = 32;
chars['J'] = 33;
chars['L'] = 34;
chars['N'] = 35;
chars['Q'] = 36;
chars['R'] = 37;
chars['S'] = 38;
chars['U'] = 39;
chars['V'] = 40;
chars['W'] = 41;
chars['Z'] = 42;

//digits
chars['0'] = 0;
chars['1'] = 1;
chars['2'] = 2;
chars['3'] = 3;
chars['4'] = 4;
chars['5'] = 5;
chars['6'] = 6;
chars['7'] = 7;
chars['8'] = 8;
chars['9'] = 9;


/**
 * Calculates UIN Control Digit as a result.
 *
 * @param {string} uin
 * @return {int} calculated control UIN digit
 * @api public
 */

function CalculateControlDigit(uin) {
    result = 0;
    try {
        result = main(uin.toUpperCase(), 0);
    } catch (e) {
        try {
            result = main(uin.toUpperCase(), 2);
        } catch (ex) {
            result = 0;
        }
    }
    return result;
}

function Test() {
	var data = [
		{
			"uin": "041112870559000000000001",
			"controlSum" : 1,
		},
		{
			"uin": "041112870559000000000002",
			"controlSum" : 5
		},
		{
			"uin": "041112870559000000000003",
			"controlSum" : 9
		},
		{
			"uin": "041112870559000000000004",
			"controlSum" : 2
		},
		{
			"uin": "041112870559000000000100",
			"controlSum" : 4
		},
		{
			"uin": "041112870559000000000125",
			"controlSum" : 3
		},
		{
			"uin": "041112870559000000000173",
			"controlSum" : 2
		}
	]

	data.forEach(function(element) {
		console.log('Expect digit: ' + element.controlSum + 
			' for UIN: ' + element.uin + ", result: " +
			(CalculateControlDigit(element.uin) == element.controlSum));
	});

}

/**
 * @param {string} uin
 * @return {int} calculated control UIN digit
 * @param leftShift 0 (for first try) or 2 (for second try)
 */
function main(uin, leftShift) {
    var controlSum = 0;
    for (i = 0; i < uin.length; i++) {
        controlSum += (chars[uin[i]] % 10) * (((i + leftShift) % 10) + 1);
    }
    if ((controlSum % 11) == 10) {
        throw new ArithmeticException('Арифметическая ошибка');
    }
    return controlSum % 11;
}