/**
 * This is all the nasty ffi setup for the bun runtime
 */
import { dlopen, ptr, suffix } from "bun:ffi";

const getLib = (name: string) => {
	return dlopen(
		name,
		{
			tcgetattr: {
				args: ['i32', 'pointer'],
				returns: 'i32',
			},
			tcsetattr: {
				args: ['i32', 'i32', 'pointer'],
				returns: 'i32',
			},
			cfmakeraw: {
				args: ['pointer'],
				returns: 'void',
			},
		},
	);
}

let cStdLib = {symbols: {}};

try {
	cStdLib = getLib(`libc.${suffix}`);
} catch {
	try {
		cStdLib = getLib(`libc.${suffix}.6`);
	}
	catch {
		throw new Error('Could not find c standard library');
	}
}

export const { tcgetattr, tcsetattr, cfmakeraw } = cStdLib.symbols;
export const getPointer = ptr;