salix/back/models/mrw-config.js

module.exports = Self => {
    require('../methods/mrw-config/createShipment')(Self);
    require('../methods/mrw-config/getLabel')(Self);
    require('../methods/mrw-config/cancelShipment')(Self);

    const fs = require('fs');
    const ejs = require('ejs');
    const UserError = require('vn-loopback/util/user-error');
    const {DOMParser} = require('xmldom');
    const axios = require('axios');

    Self.getConfig = async function() {
        const mrw = await Self.app.models.MrwConfig.findOne(null);
        if (!mrw) throw new UserError(`MRW service is not configured`);
        return mrw;
    };

    Self.getTextByTag = function(xmlDoc, tag) {
        return xmlDoc?.getElementsByTagName(tag)[0]?.textContent;
    };

    Self.sendXmlDoc = async function(path, params, contentType) {
        const parser = new DOMParser();

        const xmlTemplate = fs.readFileSync(path, 'utf-8');
        const renderedTemplate = ejs.render(xmlTemplate, params);
        const data = await axios.post(params.mrw.url, renderedTemplate, {
            headers: {
                'Content-Type': `${contentType}; charset=utf-8`
            }
        });
        return parser.parseFromString(data.data, 'text/xml');
    };
};