// Race participant for the lock tests: waits for the go file, then claims the
// binding once. Prints "claimed" or "refused" on stdout and its pid on
// stderr. A winner stays alive (holding the lock) until the done file
// appears, then releases it.
import { existsSync } from "node:fs";
import { writePid, clearPid } from "../src/journal.mjs";

const [dir, go, done] = process.argv.slice(2);
function waitFor(path) {
  const deadline = Date.now() + 10_000;
  while (!existsSync(path)) {
    if (Date.now() > deadline) { process.stderr.write(" timeout"); process.exit(2); }
    Atomics.wait(new Int32Array(new SharedArrayBuffer(4)), 0, 0, 2);
  }
}
waitFor(go);
process.stderr.write(String(process.pid));
let claimed = false;
try {
  writePid(dir, process.pid);
  claimed = true;
  process.stdout.write("claimed\n");
} catch (err) {
  if (!/another connector is running|without an owner record|which is gone|cannot be verified|cannot be read|STOP is present/.test(err.message)) { process.stderr.write(" " + err.message); process.exit(1); }
  process.stdout.write(/STOP is present/.test(err.message) ? "stopped\n" : "refused\n");
}
if (claimed) {
  waitFor(done);
  clearPid(dir, process.pid);
}