// Re-signs electrobun's prebuilt CLI binary, which ships with a BROKEN ad-hoc
// signature: it is a Bun single-file executable whose payload is appended after
// the linker signed it, so `codesign -v` reports "code or signature have been
// modified" and the macOS kernel SIGKILLs it at exec. The failure is invisible:
// electrobun's bin/electrobun.cjs wrapper spawns the real binary and forwards
// `process.exit(code || 0)` — a signal death has code === null, so `bun run
// start` printed nothing and exited 0 while never launching the app.
// `codesign --force --sign -` re-seals it ad-hoc and it runs normally.
//
// The binary is downloaded LAZILY by that wrapper on first use, not by install,
// so this runs both from postinstall and ahead of every electrobun invocation.
// Idempotent, and a no-op off macOS.
import { existsSync } from "node:fs";
import path from "node:path";

const ROOT = path.join(import.meta.dir, "..");

/** true if `bin` has (or now has) a signature the kernel will accept. */
export function ensureSigned(bin: string): boolean {
	if (process.platform !== "darwin" || !existsSync(bin)) return true;
	const valid = () => Bun.spawnSync(["codesign", "-v", bin], { stderr: "ignore" }).success;
	if (valid()) return true;
	const signed = Bun.spawnSync(["codesign", "--force", "--sign", "-", bin], { stderr: "pipe" });
	if (!signed.success || !valid()) {
		console.warn(`[electrobun-cli] could not re-sign ${path.relative(ROOT, bin)} — the app will not launch`);
		return false;
	}
	console.log(`[electrobun-cli] re-signed ${path.relative(ROOT, bin)} (upstream ad-hoc signature is invalid)`);
	return true;
}

if (import.meta.main) {
	const pkgDir = path.join(ROOT, "node_modules", "electrobun");
	const bin = path.join(pkgDir, "bin", "electrobun");

	// The wrapper downloads the CLI on first run and only then execs it, so one
	// throwaway invocation leaves a downloaded (still unsigned) binary behind
	// even though that exec is killed.
	if (process.platform === "darwin" && existsSync(pkgDir) && !existsSync(bin)) {
		Bun.spawnSync(["bunx", "electrobun", "--version"], { cwd: ROOT, stdout: "ignore", stderr: "ignore" });
	}

	// .cache is what the wrapper restores bin/ from, so both copies need fixing.
	const ok = [bin, path.join(pkgDir, ".cache", "electrobun")].map(ensureSigned).every(Boolean);
	if (!ok) process.exit(1);
}