markets/src/lib.rs

use serde::{Serialize, Deserialize};
use chrono_tz::Tz;
use chrono_tz::US::{Eastern, Central, Pacific};
use chrono_tz::Etc::GMTPlus5;

use Market::*;

#[derive(Serialize, Deserialize, PartialEq, Eq, PartialOrd, Ord, Clone, Copy, Hash)]
#[repr(u8)]
pub enum Market {
    Pjm     = 1,
    Miso    = 2,
    Caiso   = 3,
    Ercot   = 4,
    Spp     = 5,
    Nyiso   = 6,
    Iso     = 7,
}

impl Market {
    pub fn time_zone(&self) -> Tz {
        match self {
            Pjm     => Eastern,
            Miso    => GMTPlus5,
            Caiso   => Pacific,
            Ercot   => Central,
            Spp     => Central,
            Nyiso   => Eastern,
            Iso     => Eastern,
        }
    }

    pub fn as_str(&self) -> &'static str {
        match self {
            Pjm     => "pjm",
            Miso    => "miso",
            Caiso   => "caiso",
            Ercot   => "ercot",
            Spp     => "spp",
            Nyiso   => "nyiso",
            Iso     => "isone",
        }
    }
}

#[cfg(test)]
mod tests {
    #[test]
    fn it_works() {
        assert_eq!(2 + 2, 4);
    }
}