post.build.js

import * as fs from "fs"
import * as path from "path"

// Replaced in release.yml with GitHub Actions secrets
const DEPLOY_API = 'https://$DEPLOY_API'
const DEPLOY_CDN = 'https://$DEPLOY_CDN'

const DIST = '../api/MyApp/wwwroot'

// 404.html SPA fallback (supported by GitHub Pages, Cloudflare & Netlify CDNs)
fs.copyFileSync(
    path.resolve(`${DIST}/index.html`),
    path.resolve(`${DIST}/404.html`))

// Define Virtual Host for GitHub Pages CDN
fs.writeFileSync(`${DIST}/CNAME`, DEPLOY_CDN)

// Define /api proxy routes (supported by Cloudflare or Netlify CDNs)  
fs.writeFileSync(`${DIST}/_redirects`,
    fs.readFileSync(`${DIST}/_redirects`, 'utf-8')
        .replace(/{DEPLOY_API}/g, DEPLOY_API))