get-affected.ts

import { promisify } from 'util';
import axios from 'axios';

const exec = promisify(require('child_process').exec);

async function run() {
  const affected = [];

  for (const project of ['api', 'frontend', 'functions']) {
    console.error(`Project: ${project}`);

    let url: string;
    switch (project) {
      case 'api':
        url = `https://${process.env.API_AZURE_WEBAPP_NAME}.azurewebsites.net`;
        break;
      case 'frontend':
        url = `https://${process.env.SSR_AZURE_WEBAPP_NAME}.azurewebsites.net/version.json`;
        break;
      case 'functions':
        url = `https://europe-west1-${process.env.FIREBASE_PROJECT_ID}.cloudfunctions.net/version`;
        break;
    }

    console.error(`URL: ${url}`);

    let version: string;

    try {
      const versionResponse = await axios.get<{ version: string }>(url);
      version = versionResponse.data.version;
    } catch (e) {
      console.error("Couldn't fetch version. Marking affected.");
      affected.push(project);
      continue;
    }

    console.error(`Version: ${version}`);

    let isAffected = false;
    try {
      const affectedRes = await exec(
        `nx print-affected --select projects --target deploy --head HEAD --base ${version}`
      );
      isAffected = affectedRes.stdout.trim().split(', ').includes(project);
    } catch (e) {
      isAffected = true;
    }

    console.error(`Is affected: ${isAffected}`);

    if (isAffected) {
      affected.push(project);
    }

    console.error('');
  }

  console.log(affected.join(','));
}

run().then();