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import {
Either,
type IEither,
type ITraceable,
LogLevel,
TraceUtil,
} from "@emprespresso/pengueno";
export type Command = string[] | string;
type CommandOutputDecoded = {
code: number;
stdoutText: string;
stderrText: string;
};
export const getStdout = <Trace>(
c: ITraceable<Command, Trace>,
options: Deno.CommandOptions = {},
): Promise<IEither<Error, string>> =>
c
.bimap(TraceUtil.withFunctionTrace(getStdout))
.map((tCmd) => {
const cmd = tCmd.get();
tCmd.trace.trace(`:> im gonna run this command! ${cmd}`);
const [exec, ...args] = typeof cmd === "string" ? cmd.split(" ") : cmd;
return new Deno.Command(exec, {
args,
stdout: "piped",
stderr: "piped",
...options,
});
})
.map((tCmd) =>
Either.fromFailableAsync<Error, Deno.CommandOutput>(() =>
tCmd.get().output(),
),
)
.map(
TraceUtil.promiseify((tEitherOut) =>
tEitherOut.get().flatMap(({ code, stderr, stdout }) =>
Either.fromFailable<Error, CommandOutputDecoded>(() => {
const stdoutText = new TextDecoder().decode(stdout);
const stderrText = new TextDecoder().decode(stderr);
return { code, stdoutText, stderrText };
})
.mapLeft((e) => {
tEitherOut.trace.addTrace(LogLevel.ERROR).trace(`o.o wat ${e}`);
return new Error(`${e}`);
})
.flatMap((decodedOutput): IEither<Error, string> => {
const { code, stdoutText, stderrText } = decodedOutput;
if (stderrText) {
tEitherOut.trace
.addTrace(LogLevel.DEBUG)
.trace(`stderr: ${stderrText}`);
}
if (code !== 0) {
const msg = `i weceived an exit code of ${code} i wanna zewoooo :<`;
tEitherOut.trace.addTrace(LogLevel.ERROR).trace(msg);
return Either.left(new Error(msg));
}
return Either.right(stdoutText);
}),
),
),
)
.get();
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