import fs from "node:fs/promises";
import path from "node:path";
import { execFile } from "node:child_process";
import { promisify } from "node:util";

const execFileAsync = promisify(execFile);
const devPort = Number(process.env.PLAYWRIGHT_DEV_PORT || 5173);
const runtimeNamespace = String(process.env.PLAYWRIGHT_ARTIFACT_NAMESPACE || `port-${devPort}`)
  .trim()
  .replace(/[^a-zA-Z0-9._-]+/g, "-");
const pidFile = path.resolve(process.cwd(), "output/playwright", `dev-server-${runtimeNamespace}.json`);

async function killProcessTree(pid) {
  if (!pid) {
    return;
  }

  if (process.platform === "win32") {
    await execFileAsync("taskkill", ["/PID", String(pid), "/T", "/F"], { cwd: process.cwd() }).catch(() => {});
    return;
  }

  try {
    process.kill(-pid, "SIGTERM");
  } catch {
    try {
      process.kill(pid, "SIGTERM");
    } catch {
      // ignore
    }
  }
}

export default async function globalTeardown() {
  if (process.env.PLAYWRIGHT_BASE_URL) {
    return;
  }

  try {
    const file = await fs.readFile(pidFile, "utf8");
    const { pid } = JSON.parse(file);
    await killProcessTree(pid);
  } catch {
    // ignore missing or malformed state
  }

  await fs.rm(pidFile, { force: true }).catch(() => {});
}