/**
 * @file Makes every child process on Windows start with `windowsHide: true`.
 * The dashboard runs detached, with no console of its own, so Windows gave
 * each console program it ran (git, npm, where, …) a NEW console window — a
 * flash that stole focus on every poll. Node has no global default, so this
 * patches `ChildProcess.prototype.spawn` (the one path spawn/exec/execFile/fork
 * and their promisified forms all take) and wraps the sync exports. Require it
 * FIRST in an entry point: a `const { execSync } = require("child_process")`
 * evaluated before it keeps the unwrapped function. A no-op off Windows.
 * @author Nguyễn Ngọc Trí Vĩ <vinnt@smartgift.vn>
 */

const DONE = Symbol.for("agenthub.windowsHide");

function install(cp = require("child_process"), platform = process.platform) {
  if (platform !== "win32" || cp[DONE]) return;
  cp[DONE] = true;

  const spawn = cp.ChildProcess.prototype.spawn;
  cp.ChildProcess.prototype.spawn = function (options) {
    options.windowsHide = true;
    return spawn.call(this, options);
  };

  // spawnSync(cmd, args?, opts?), execFileSync(file, args?, opts?), execSync(cmd, opts?)
  for (const name of ["spawnSync", "execFileSync", "execSync"]) {
    const fn = cp[name];
    cp[name] = function (...args) {
      while (args.length > 1 && args[args.length - 1] == null) args.pop();
      const last = args[args.length - 1];
      if (args.length > 1 && typeof last === "object" && !Array.isArray(last)) {
        args[args.length - 1] = { ...last, windowsHide: true };
      } else {
        args.push({ windowsHide: true });
      }
      return fn.apply(this, args);
    };
  }
}

module.exports = { install };