lta 0.6.0

🚍 Singapore LTA Datamall Rust Client written in pure rust with support for asynchronous requests
Documentation 
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use crate::blocking::{build_req_with_query, build_req_with_skip, LTAClient};
use crate::models::chrono::NaiveDate;
use crate::models::crowd::passenger_vol;
use crate::{vol_type_to_url, Client, Crowd, LTAResult};
use lta_models::crowd::crowd_density::{CrowdDensityForecast, CrowdDensityForecastRawResp};
use lta_models::crowd::passenger_vol::VolType;
use lta_models::prelude::{MrtLine, StationCrowdLevel, StationCrowdLevelRawResp};

/// All APIs pertaining to transportation crowd
pub trait CrowdRequests<C: Client> {
    /// Creates a new client for every call
    /// **Update freq**: By 15th of every month, the passenger volume for previous month data
    /// will be generated
    ///
    /// Note: Link will expire after 5mins!
    fn get_passenger_vol_by<S, D>(
        client: &C,
        vol_type: passenger_vol::VolType,
        date: D,
        skip: S,
    ) -> LTAResult<Vec<String>>
    where
        S: Into<Option<u32>>,
        D: Into<Option<NaiveDate>>;

    /// Returns real-time platform crowdedness level for the MRT/LRT stations of a
    /// particular train network line
    ///
    /// **Update freq**: 10 minutes
    fn get_crowd_density_rt(client: &C, train_line: MrtLine) -> LTAResult<Vec<StationCrowdLevel>>;

    /// Returns forecasted platform crowdedness level for the MRT/LRT stations of a
    /// particular train network line at 30 minutes interval
    ///
    /// **Update freq**: 24hours
    fn get_crowd_density_forecast(
        client: &C,
        train_line: MrtLine,
    ) -> LTAResult<CrowdDensityForecast>;
}

impl CrowdRequests<LTAClient> for Crowd {
    fn get_passenger_vol_by<S, D>(
        client: &LTAClient,
        vol_type: VolType,
        date: D,
        skip: S,
    ) -> LTAResult<Vec<String>>
    where
        S: Into<Option<u32>>,
        D: Into<Option<NaiveDate>>,
    {
        let fmt_date = date
            .into()
            .map(|f| f.format(passenger_vol::FORMAT).to_string());

        let url = vol_type_to_url(vol_type)?;

        match fmt_date {
            Some(nd) => build_req_with_query::<passenger_vol::PassengerVolRawResp, _, _, _>(
                client,
                url,
                |rb| rb.query(&[("Date", nd)]),
            ),
            None => build_req_with_skip::<passenger_vol::PassengerVolRawResp, _, _>(
                client,
                url,
                skip.into(),
            ),
        }
    }

    fn get_crowd_density_rt(
        client: &LTAClient,
        train_line: MrtLine,
    ) -> LTAResult<Vec<StationCrowdLevel>> {
        build_req_with_query::<StationCrowdLevelRawResp, _, _, _>(
            client,
            api_url!("/PCDRealTime"),
            |rb| rb.query(&[("TrainLine", train_line)]),
        )
    }

    fn get_crowd_density_forecast(
        client: &LTAClient,
        train_line: MrtLine,
    ) -> LTAResult<CrowdDensityForecast> {
        build_req_with_query::<CrowdDensityForecastRawResp, _, _, _>(
            client,
            api_url!("/PCDForecast"),
            |rb| rb.query(&[("TrainLine", train_line)]),
        )
    }
}