import { resolveExecutablePath } from "../../subprocess/worker-client";

/** Exit code and captured output of one Bun package-manager invocation. */
export interface BunCliResult {
	readonly exitCode: number;
	readonly stdout: string;
	readonly stderr: string;
}

/**
 * Runs Bun's CLI (`bun <args>`) in `cwd` for plugin install/update/uninstall.
 *
 * Re-enters the running executable with `BUN_BE_BUN=1` instead of resolving
 * `bun` from `$PATH`: source and bundle installs already run under Bun, and the
 * standalone `omp` binary embeds Bun, so plugin installs never require a
 * separately installed Bun (#15480). Same mechanism as
 * `eval/js/package-installer.ts` and `@oh-my-pi/pi-utils` runtime installs.
 */
export async function runBunCli(args: readonly string[], cwd: string): Promise<BunCliResult> {
	const proc = Bun.spawn([resolveExecutablePath(), ...args], {
		cwd,
		env: { ...Bun.env, BUN_BE_BUN: "1" },
		stdin: "ignore",
		stdout: "pipe",
		stderr: "pipe",
		windowsHide: true,
	});
	// Drain both pipes concurrently with exit: awaiting `exited` first deadlocks
	// once a chatty install fills the OS pipe buffer.
	const [exitCode, stdout, stderr] = await Promise.all([
		proc.exited,
		new Response(proc.stdout).text(),
		new Response(proc.stderr).text(),
	]);
	return { exitCode, stdout, stderr };
}