iso8583_esm/lib/requiredFields.js

A javascript library for messaging in iso 8583 messaging format.

import { DefaultError } from './errors';
import * as helpers from './helpers';
const defaultRequiredFieldsSchema = [
    {
        processing_code: '000000',
        required_fields: [0, 2, 4],
    },
    {
        processing_code: '000002',
        required_fields: [0],
    },
    {
        processing_code: '999999',
        required_fields: [
            {
                '0100': [3, 7],
                '0500': [3, 7, 11],
            },
        ],
    },
];
// Breaking change: No dynmaic file import. Pass the config
export function requiredFields(data, requiredFieldsConfig = defaultRequiredFieldsSchema) {
    const conf = requiredFieldsConfig || defaultRequiredFieldsSchema;
    const message_code = `${data[0]}`;
    const processing_code = `${data[3]}`;
    const key = 'required_fields';
    const required_fields = helpers.findRequiredFields(conf, key, processing_code, message_code);
    const iso_fields = helpers.extractBits(data);
    const missing_fields = helpers.matchValues(required_fields, iso_fields);
    if (missing_fields.length > 0) {
        return new DefaultError('Processing code: ' + processing_code + ' - Missing required fields: ' + missing_fields);
    }
    return true;
}