purge-cdn-cache.js

const axios = require('axios');
const fs = require('fs');

const parameters = JSON.parse(process.env.PARAMETERS);
const CLOUDFLARE_X_AUTH_EMAIL = parameters.Parameters
    .find(param => param.Name === 'CLOUDFLARE_X_AUTH_EMAIL').Value;
const CLOUDFLARE_X_AUTH_KEY = parameters.Parameters
    .find(param => param.Name === 'CLOUDFLARE_X_AUTH_KEY').Value;
const CLOUDFLARE_ZONE_ID = parameters.Parameters
    .find(param => param.Name === 'CLOUDFLARE_ZONE_ID').Value;

const headers = {
        'X-Auth-Email': CLOUDFLARE_X_AUTH_EMAIL,
        'X-Auth-Key': CLOUDFLARE_X_AUTH_KEY,
        'Content-Type': 'application/json'
    };
    
const urls = fs.readFileSync('urls-to-purge.txt', 'utf8')
    .toString()
    .split('\n')
    .map(line => line.trim());

if (urls.length === 0  || (urls.length === 1 && !urls[0])) {
    return;
} 

let body, isAll = false;
if (urls.length === 1 && urls[0] === 'All') {
    body = { purge_everything: true};
    isAll = true;
} else if (urls.length > 0) {
    body = { files: urls.reduce((acc, curr) => {
        if (curr === '') {
            return acc;
        } else if (curr.toLowerCase() === 'all posts') {
            const allPosts = getPostsURLs();
            acc.push(...allPosts);
        } else {
            const path = curr === '/' ? '' : curr;
            acc.push(`https://www.kabardinovd.com${path}`);
            acc.push(`https://kabardinovd.com${path}`);
        }
        return acc;
    }, []) };
}

axios
    .post(`https://api.cloudflare.com/client/v4/zones/${CLOUDFLARE_ZONE_ID}/purge_cache`, body, {headers})
    .then(() => {
        fs.writeFileSync('deploy-logs.txt', `
        Busted cache for the following urls:
         ${isAll ? 'All of them' : urls.join(', ')}
         `);
    })
    .catch((error) => {
        fs.writeFileSync('deploy-logs.txt',  `
        error: ${JSON.stringify(error)}
        `);
    })

function getPostsURLs() {
    const files = fs.readdirSync('posts');
    return files
        .filter((fileNameWithExt) => 
            fileNameWithExt.split('.').pop()
            .toLowerCase() !== 'json')
        .flatMap(fileNameWithExt => {
            const withoutExt = fileNameWithExt
                .split('.').slice(0, -1).join('.');
            return [`https://kabardinovd.com/posts/${withoutExt}/`,
             `https://www.kabardinovd.com/posts/${withoutExt}/`]
        });
}