import { ChildProcess, spawn } from 'child_process';

export const promisifyChildProcess = (
	childProcess: ChildProcess,
): Promise<string> => {
	return new Promise((resolve, reject) => {
		let dataString = '';
		let errorString = '';

		childProcess.stdout.setEncoding('utf8');
		childProcess.stderr.setEncoding('utf8');

		childProcess.stdout.on('data', (data: string) => (dataString += data));
		childProcess.stderr.on('data', (data: string) => (errorString += data));

		childProcess.on('close', (code: number) => {
			if (code === 0) {
				resolve(dataString.trim());
			} else {
				reject(new Error(errorString.trim()));
			}
		});
	});
};

export const spawnPromise = (
	command: string,
	args: string[],
	config = {},
): Promise<string> => promisifyChildProcess(spawn(command, args, config));