1. Куча / Говнокод #25304

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    fn do_get_summary(req: &HttpRequest<AppState>) -> SummaryFuture {
    let token = req.token().expect("ISE: token not verified during AuthMiddleware stage");

    let datetime = req.match_info()
        .get("timestamp")
        .and_then(|s| i64::from_str(s).ok())
        .map(|ts| NaiveDateTime::from_timestamp(ts, 0));

    let datetime = match datetime {
        Some(dt) => dt,
        None => return Box::new(future::result(Err(ServiceError::InvalidSetting {
            key: "timestamp".into(),
            hint: "local time in seconds since Unix Epoch".into()
        }.into())))
    };

    let db = req.state().db.clone();

    let settings = req.state().db
        .send(db::GetSettings(token.clone()))
        .map_err(failure::Error::from)
        // flatten error
        .and_then(|res| match res {
            Ok(settings) => Ok(settings),
            Err(err) => Err(err)
        });

    let fitbit = req.state().db
        .send(db::GetSettingsFitbit(token))
        .map_err(failure::Error::from)
        // Check if there is token and flatten error
        .and_then(|res| match res {
            Ok(fitbit) => {
                if fitbit.client_token.is_none() {
                    Err(ServiceError::TokenExpired.into())
                } else {
                    Ok(fitbit)
                }
            },
            Err(err) => Err(err)
        });

    let headmaster = req.state().headmaster.clone();

    let summary_and_token = settings.join(fitbit)
        .and_then(move |(settings, fitbit)| -> Box<dyn Future<Item = (Summary, FitbitToken), Error = failure::Error>> {
            // Deserialize token
            let token = fitbit.client_token.expect("ISE: token option is not cleared");
            let fitbit_token = match FitbitToken::from_json(&token) {
                Ok(token) => token,
                Err(err) => return Box::new(future::err(ServiceError::TokenExpired.into()))
            };

            let headmaster_config = master::HeadmasterConfig {
                minimum_active_time: settings.hourly_activity_goal,
                max_accounted_active_minutes: settings.hourly_activity_limit.unwrap_or(settings.hourly_activity_goal * 3),
                debt_limit: settings.hourly_debt_limit.unwrap_or(settings.hourly_activity_goal * 3),
                day_begins_at: settings.day_starts_at,
                day_ends_at: settings.day_ends_at,
                day_length: settings.day_length.unwrap_or((settings.day_ends_at.hour() - settings.day_starts_at.hour()) as i32),
                user_date_time: datetime,
            };

            let auth_data = FitbitAuthData {
                id: fitbit.client_id,
                secret: fitbit.client_secret,
                token: fitbit_token,
            };

            let future = headmaster.send(master::GetSummary::<FitbitActivityGrabber>::new(headmaster_config, auth_data))
                .map_err(failure::Error::from)
                // flatten error
                .and_then(|res| res);

            Box::new(future)
        });

    let summary = summary_and_token
        .and_then(move |(summary, fitbit_token)| {
            db.send(db::UpdateSettingsFitbit::new(
                token, db::models::UpdateFitbitCredentials {
                    client_token: Some(Some(fitbit_token.to_json())),
                    ..Default::default()
                }))
                .map_err(failure::Error::from)
                .and_then(|_| Ok(summary))
        });

    Box::new(summary)
}

    Фьючи в Rust до рефакторинга -- тот еще говнокод

    Запостил: mersinvald, 12 Января 2019

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