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import {
Either,
type IEither,
type ITraceable,
LogLevel,
type LogTraceSupplier,
TraceUtil,
} from '@emprespresso/pengueno';
import { promisify } from 'node:util';
import { exec as execCallback } from 'node:child_process';
const exec = promisify(execCallback);
export type Command = string[] | string;
export type StdStreams = { stdout: string; stderr: string };
export const getStdout = (
c: ITraceable<Command, LogTraceSupplier>,
options: { env?: Record<string, string>; clearEnv?: boolean } = {},
): Promise<IEither<Error, string>> =>
c
.bimap(TraceUtil.withFunctionTrace(getStdout))
.bimap((tCmd) => {
const cmd = tCmd.get();
tCmd.trace.trace(`Command = ${cmd} :> im gonna run this command! `);
const _exec = typeof cmd === 'string' ? cmd : cmd.join(' ');
const env = options.clearEnv ? options.env : { ...process.env, ...options.env };
const p: Promise<IEither<Error, StdStreams>> = Either.fromFailableAsync(exec(_exec, { env }));
return [p, `Command = ${_exec}`];
})
.map(
TraceUtil.promiseify(
(tEitherProcess): IEither<Error, string> =>
tEitherProcess.get().fold(({ isLeft, value }) => {
if (isLeft) {
return Either.left(value);
}
if (value.stderr) {
tEitherProcess.trace.addTrace(LogLevel.DEBUG).trace(`StdErr = ${value.stderr}`);
}
return Either.right(value.stdout);
}),
),
)
.get();
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