import {
    Either,
    HttpMethod,
    IEither,
    type ITraceable,
    LogLevel,
    PenguenoError,
    type PenguenoRequest,
    type RequestFilter,
    type ServerTrace,
    TraceUtil,
} from '@emprespresso/pengueno';

export const requireMethod =
    (methods: Array<HttpMethod>): RequestFilter<HttpMethod> =>
    (req: ITraceable<PenguenoRequest, ServerTrace>) =>
        req
            .flatMap(TraceUtil.withFunctionTrace(requireMethod))
            .map((t): IEither<PenguenoError, HttpMethod> => {
                const {
                    req: { method },
                } = t.get();
                if (!methods.includes(method)) {
                    const msg = "that's not how you pet me (⋟﹏⋞)~";
                    t.trace.traceScope(LogLevel.WARN).trace(msg);
                    return Either.left(new PenguenoError(msg, 405));
                }
                return Either.right(method);
            })
            .get();