// Build the browser runtime from source; no prebuilt local WASM is required.
import { spawnSync } from 'node:child_process';
import { mkdirSync, readFileSync } from 'node:fs';
import { fileURLToPath } from 'node:url';

const site = fileURLToPath(new URL('../', import.meta.url));
const rust = fileURLToPath(new URL('../../../wip-rs/', import.meta.url));
const source = JSON.parse(readFileSync(new URL('../rust-source.json', import.meta.url), 'utf8'));
const revision = spawnSync('git', ['rev-parse', 'HEAD'], { cwd: rust, encoding: 'utf8' });
const status = spawnSync('git', ['status', '--porcelain'], { cwd: rust, encoding: 'utf8' });
if (revision.status !== 0 || revision.stdout.trim() !== source.revision || status.status !== 0 || status.stdout.trim()) {
  if (process.env.WIP_ALLOW_DIRTY_SOURCE !== '1') {
    throw new Error(`Expected clean sibling wip-rs at ${source.revision}. See rust-source.json; use WIP_ALLOW_DIRTY_SOURCE=1 only for local Rust development.`);
  }
  console.warn('Building with an explicitly unpinned local Rust source; this is not a reproducible release build.');
}
function run(command, args) {
  const result = spawnSync(command, args, { cwd: site, stdio: 'inherit' });
  if (result.error) throw result.error;
  if (result.status !== 0) process.exit(result.status ?? 1);
}
function available(command) {
  return spawnSync(command, ['--version'], { stdio: 'ignore' }).status === 0;
}
const testProbes = process.argv.includes('--test-probes');
const output = testProbes ? 'test-assets/wip-wasm' : 'public/wip-wasm';
const cargo = ['build', '--locked', '--manifest-path', 'browser/Cargo.toml', '--target', 'wasm32-unknown-unknown', '--release', ...(testProbes ? ['--features', 'test-probes'] : [])];
if (available('cargo')) run('cargo', cargo);
else run('nix', ['shell', '--inputs-from', rust, 'nixpkgs#lld', '--command', 'nix', 'develop', rust, '--no-write-lock-file', '--command', 'cargo', ...cargo]);
mkdirSync(new URL(`../${output}/`, import.meta.url), { recursive: true });
const bindgen = ['target/wasm32-unknown-unknown/release/wip_browser.wasm', '--target', 'web', '--out-dir', output, '--out-name', 'wip_browser'];
if (available('wasm-bindgen')) run('wasm-bindgen', bindgen);
else run('nix', ['shell', '--inputs-from', rust, 'nixpkgs#wasm-bindgen-cli', '--command', 'wasm-bindgen', ...bindgen]);