test/test-songs.html

<style>
pre { margin: 0; } 
</style>
<body>
<p>Reads the local songs.json and tries to compile each song</p>
<hr>
</body>
<script src="../js/lzma.js"></script>
<script type="module">
/* global LZMA */
import ByteBeatCompiler from '../src/ByteBeatCompiler.js';
import {
  convertHexToBytes,
  splitBySections,
} from '../editor/utils.js';

const compressor = new LZMA( '../js/lzma_worker.js' );

function decompress(bytes) {
  return new Promise(resolve => {
    compressor.decompress(bytes, resolve);
  });
}

function compileExpressions(expressions, expressionType) {
  const extra = ByteBeatCompiler.makeExtra();
  for (let i = 0; i < expressions.length; ++i) {
    const exp = expressions[i];
    ByteBeatCompiler.compileExpression(exp, expressionType, extra);
  }
}

function logImpl(color, ...args) {
  const elem = document.createElement('pre');
  elem.textContent = args.join(' ');
  elem.style.color = color;
  document.body.appendChild(elem);
}

const log = (...args) => logImpl('', ...args);
const error = (...args) => logImpl('red', ...args);

async function main() {
  const req = await fetch('../editor/songs.json');
  const songs = await req.json();
  const bad = [];
  let count = 0;
  for (const {title, link} of songs) {
    log('test:', ++count, title);
    const url = new URL(link);
    const hash = url.hash.substr(1);
    const args = hash.split('&');
    const data = {};
    for (let i = 0; i < args.length; ++i) {
      const parts = args[i].split('=');
      data[parts[0]] = parts[1];
    }
    //const t = data.t !== undefined ? parseFloat(data.t) : 1;
    const e = data.e !== undefined ? parseFloat(data.e) : 0;
    //const s = data.s !== undefined ? parseFloat(data.s) : 8000;
    const bytes = convertHexToBytes(data.bb);
    const text = await decompress(bytes);

    try {
      const sections = splitBySections(text);
      if (sections.default || sections.channel1) {
        const expressions = [sections.default?.body || sections.channel1?.body];
        if (sections.channel2) {
          expressions.push(sections.channel2.body);
        }
        compileExpressions(expressions, e);
      }
    } catch (err) {
      error(`failed to compile: ${title}`);
      error(err);
      bad.push({title, link});
    }
  }
  log(JSON.stringify(bad, null, 2));
}


main();
</script>