@schibsted/sourcepoint/src/node/index.js

Package containing scripts used by Schibsteds' sites to integrate with Sourcepoint CMP

import fs from 'fs';
import path from 'path';
import { fileURLToPath } from 'url';
import {version} from './version.js';

const __filename = fileURLToPath(import.meta.url);
const __dirname = path.dirname(__filename);
const rootPath = path.resolve(__dirname, '..', '..');
const templateDir = path.resolve(rootPath, 'dist', 'templates');
const pkgVersion = version;

export function psi(config, asHtml = true) {
    return createModule(config, asHtml, 'psi');
}

export function scc(config, asHtml = true) {
    return createModule(config, asHtml, 'scc');
}

export function tcf(config, asHtml = true) {
    return createModule(config, asHtml, 'tcf');
}

function createModule(config, asHtml, type) {
    const snippet = fs.readFileSync(path.resolve(templateDir, `${type}.js`), 'utf8');
    const messagingSnippet = fs.readFileSync(
        path.resolve(templateDir, `${type}-with-messaging.js`),
        'utf8'
    );
    const configObject = type === 'psi' ? ({...config, jsSdkVersion: pkgVersion}) : config;
    const code = addBanner(injectConfig(asHtml ? snippet : messagingSnippet, configObject));
    return asHtml ? addJsTag(code, config) : code;
}

function injectConfig(content, config) {
    const configAsStr = JSON.stringify(config);
    return content.replace(/['"]__CONFIGURATION_PLACEHOLDER__['"]/, configAsStr);
}

function addBanner(code) {
    const date = new Date().toISOString();
    return `/*! Copyright © ${new Date().getFullYear()} Schibsted. Generated by @schibsted/sourcepoint ${pkgVersion} (${date}) */\n${code}`;
}

function addJsTag(code, { baseEndpoint }) {
    if (!baseEndpoint) {
        throw new Error('"baseEndpoint" is not configured');
    }
    const codeScript = `<script>\n${code}</script>`;
    const preloadLink = `<link rel="preload" href="${baseEndpoint}/unified/wrapperMessagingWithoutDetection.js" as="script" crossorigin="crossorigin" fetchpriority="high">`;
    const script = `<script async src="${baseEndpoint}/unified/wrapperMessagingWithoutDetection.js" onload="document.dispatchEvent(new Event('cmp:loaded'))"></script>`;
    return `${codeScript}\n${preloadLink}\n${script}`;
}