stdnum
Version:
Standard Number Validation
63 lines • 5.62 kB
JavaScript
import * as exceptions from '../exceptions';
import { strings } from '../util';
function clean(input) {
return strings.cleanUnicode(input, ' ');
}
const alphabet = '0123456789BCDFGHJKLMNPQRSTUVWXYZ';
const impl = {
name: 'Italian Code for Identification of Drugs',
localName: 'Autorizzazione all’Immissione in Commercio',
abbreviation: 'AIC',
compact(input) {
const [value, err] = clean(input);
if (err) {
throw err;
}
return value;
},
format(input) {
const [value] = clean(input);
return value;
},
validate(input) {
const [value, error] = clean(input);
if (error) {
return { isValid: false, error };
}
if (value.length !== 6 && value.length !== 9) {
return { isValid: false, error: new exceptions.InvalidLength() };
}
let base10 = value;
if (value.length === 6) {
const chars = value.split('');
if (!chars.every(v => alphabet.includes(v))) {
return { isValid: false, error: new exceptions.InvalidFormat() };
}
base10 = String(chars
.reverse()
.reduce((acc, v, idx) => acc + alphabet.indexOf(v) * Math.pow(32, idx), 0)).padStart(9, '0');
}
if (!strings.isdigits(base10)) {
return { isValid: false, error: new exceptions.InvalidFormat() };
}
const [front, end] = strings.splitAt(base10, -1);
const sum = front
.split('')
.map(v => parseInt(v, 10))
.reduce((acc, v, idx) => {
const vv = v * ((idx % 2) + 1);
return acc + Math.floor(vv / 10) + (vv % 10);
}, 0);
if (String(sum % 10) !== end) {
return { isValid: false, error: new exceptions.InvalidChecksum() };
}
return {
isValid: true,
compact: value,
isIndividual: false,
isCompany: false,
};
},
};
export const { name, localName, abbreviation, validate, format, compact } = impl;
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