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Mod10 - Febraban
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import _ from 'lodash'; | |
function calculateDV(barcode) { | |
let brokeParts = _.chunk(barcode, 11); | |
if (barcode.startsWith(8)) { | |
return brokeParts | |
.map(i => { | |
let part = i.join(''); | |
console.log(part); | |
return `${part}${mod10(part)}`; | |
}) | |
.join(''); | |
} | |
return convertBarcodeToDigitableLine(barcode); | |
} | |
function convertBarcodeToDigitableLine(code) { | |
var field1, field2, field3, field4, field5; | |
if (code.length != 44) { | |
return null; // 'A code do Código de Barras está incompleta!' | |
} | |
field1 = | |
code.substring(0, 4) + code.substring(19, 20) + +code.substring(20, 24); | |
field2 = code.substring(24, 29) + code.substring(29, 34); | |
field3 = code.substring(34, 39) + code.substring(39, 44); | |
field4 = code.substring(4, 5); // Digito verificador | |
field5 = code.substring(5, 19); // Vencimento + Valor | |
if (mod11(code.substring(0, 4) + code.substring(5, 44)) != field4) { | |
return null; //'Digito verificador '+field4+', o correto é '+modulo11_banco( linha.substr(0,4)+linha.substr(5,99) )+'\nO sistema não altera automaticamente o dígito correto na quinta casa!' | |
} | |
return `${field1}${mod10(field1)}${field2}${mod10(field2)}${field3}${mod10( | |
field3 | |
)}${field4}${field5}`; | |
} | |
function mod10(number) { | |
var i, | |
mult = 2, | |
soma = 0, | |
ref = ''; | |
for (i = number.length - 1; i >= 0; i--) { | |
ref = mult * parseInt(number.charAt(i)) + ref; | |
if (--mult < 1) { | |
mult = 2; | |
} | |
} | |
for (i = 0; i < ref.length; i++) { | |
soma = soma + parseInt(ref.charAt(i)); | |
} | |
soma = soma % 10; | |
if (soma != 0) { | |
soma = 10 - soma; | |
} | |
return soma.toString(); | |
} | |
function mod11(digits) { | |
if (typeof digits === 'string') { | |
digits = digits.split(''); | |
} | |
digits.reverse(); | |
var sum = 0; | |
for (var i = 0; i < digits.length; i++) { | |
sum += (i % 8 + 2) * digits[i]; | |
} | |
return (11 - sum % 11) % 10 || 1; | |
} | |
export { calculateDV }; |
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