// Focused check 2: unsupported format recorded as blocker, not success.
// Verifies the honest boundary of what @signalapp/libsignal-client provides for
// a Web (browser/worker) deployment and for the OMEMO/OMEMO2 wire format.
// This script deliberately does NOT claim success for anything it cannot show.
import { existsSync, readdirSync, statSync } from 'node:fs';
import { join, dirname } from 'node:path';
import { fileURLToPath } from 'node:url';

const here = dirname(fileURLToPath(import.meta.url));
const pkgDir = join(here, '..', 'node_modules', '@signalapp', 'libsignal-client');

function walkWasm(dir, acc = []) {
  for (const e of readdirSync(dir)) {
    const p = join(dir, e);
    if (statSync(p).isDirectory()) walkWasm(p, acc);
    else if (e.endsWith('.wasm')) acc.push(p);
  }
  return acc;
}

const wasmFiles = existsSync(pkgDir) ? walkWasm(pkgDir) : null;
const prebuildDir = join(pkgDir, 'prebuilds');
const prebuilds = existsSync(prebuildDir) ? readdirSync(prebuildDir) : [];

console.log('pkgPresent:', existsSync(pkgDir));
console.log('wasmFiles:', wasmFiles ? wasmFiles.length : 'n/a');
console.log('prebuilds:', prebuilds.join(', '));

if (!wasmFiles || wasmFiles.length === 0) {
  // This is an unsupported backend for a browser worker, not a success.
  const msg =
    'UNSUPPORTED_BLOCKER: no .wasm asset ships in @signalapp/libsignal-client; ' +
    'the distribution is a Node native addon (prebuilds/*/*.node). A browser ' +
    'worker/WASM deployment is NOT established by this npm package and must be ' +
    'treated as a blocker until a verified browser/WASM distribution is found.';
  console.log(msg);
  process.exit(2);
} else {
  console.log('wasm present (unexpected here)');
  process.exit(0);
}