/* Regenerate standalone.html by inlining style.css + engine.js + app.js into
   index.html (README: standalone.html must never be edited directly). */
'use strict';
const fs = require('fs');
const path = require('path');
const here = (f) => path.join(__dirname, f);
const read = (f) => fs.readFileSync(here(f), 'utf8');

let html = read('index.html');
const inline = (needle, replacement) => {
  if (!html.includes(needle)) throw new Error('index.html missing: ' + needle);
  html = html.replace(needle, () => replacement);
};

inline('<link rel="stylesheet" href="style.css">',
  '<style>\n' + read('style.css') + '</style>');
inline('<script src="engine.js"></script>',
  '<script>\n' + read('engine.js') + '</script>');
inline('<script src="app.js"></script>',
  '<script>\n' + read('app.js') + '</script>');
inline('<script src="llm/observe.js"></script>',
  '<script>\n' + read('llm/observe.js') + '</script>');
inline('<script src="llm/providers.js"></script>',
  '<script>\n' + read('llm/providers.js') + '</script>');
inline('<script src="llm/spectate.js"></script>',
  '<script>\n' + read('llm/spectate.js') + '</script>');

fs.writeFileSync(here('standalone.html'), html);
console.log('standalone.html regenerated (' + html.length + ' bytes)');