// Kills every process global-setup.ts spawned and removes the throwaway containers it started.
// Reads .e2e-state.json rather than relying on in-memory state from global-setup.ts, so teardown
// is correct even if it's ever invoked independently — see global-setup.ts's doc comment on the
// zombie-listener gotcha this is specifically guarding against.
import { execSync } from "node:child_process";
import { existsSync, readFileSync, rmSync } from "node:fs";
import { STATE_FILE, type E2eState } from "./config";

function killPid(pid: number) {
  try {
    if (process.platform === "win32") {
      // shell:true spawned bun via cmd.exe — killing just the parent PID leaves the real bun
      // process running; /T kills the whole tree.
      execSync(`taskkill /F /T /PID ${pid}`, { stdio: "ignore" });
    } else {
      process.kill(-pid, "SIGKILL"); // negative pid: whole process group (spawned with shell)
    }
  } catch {
    // already dead — fine
  }
}

export default async function globalTeardown() {
  if (!existsSync(STATE_FILE)) return;

  const state = JSON.parse(readFileSync(STATE_FILE, "utf-8")) as E2eState;

  for (const pid of state.pids) killPid(pid);

  for (const container of state.containers) {
    try {
      execSync(`docker rm -f ${container}`, { stdio: "ignore" });
    } catch {
      // fine
    }
  }

  rmSync(STATE_FILE, { force: true });
  console.log("[global-teardown] cleaned up");
}