emergencylib/enums/
emergency_status.rs

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use std::fmt;
use std::fmt::Formatter;
use std::str;
use strum_macros::EnumString;

use serde::Deserialize;
use serde::Serialize;

#[cfg(feature = "diesel")]
use {
    diesel::{deserialize, not_none, serialize},
    diesel::{AsExpression, FromSqlRow},
    diesel::backend::Backend,
    diesel::deserialize::FromSql,
    diesel::pg::Pg,
    diesel::serialize::{IsNull, Output, ToSql},
    diesel::types::Varchar,
    std::io::Write,
};

#[derive(Debug, PartialEq, Clone, Serialize, Deserialize,EnumString)]
#[cfg_attr(
feature = "diesel",
derive(AsExpression, FromSqlRow),
sql_type = "Varchar"
)]

pub enum EmergencyStatus {
    Investigation,
    Confirmed,
    Unconfirmed,
    Responding,
    Complete,
    Resolved,
    Historical,
    Undefined,

}
impl fmt::Display for EmergencyStatus {
    fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result {
        write!(f, "{:?}", self)
    }
}
impl Default for EmergencyStatus {
    fn default() -> Self {
        EmergencyStatus::Undefined
    }
}

#[cfg(feature = "diesel")]
impl ToSql<Varchar, Pg> for EmergencyStatus {
    fn to_sql<W: Write>(&self, out: &mut Output<W, Pg>) -> serialize::Result {
        match *self {
            EmergencyStatus::Investigation => out.write_all(b"Investigation")?,
            EmergencyStatus::Confirmed => out.write_all(b"Confirmed")?,
            EmergencyStatus::Unconfirmed => out.write_all(b"Unconfirmed")?,
            EmergencyStatus::Responding => out.write_all(b"Responding")?,
            EmergencyStatus::Complete => out.write_all(b"Complete")?,
            EmergencyStatus::Resolved => out.write_all(b"Resolved")?,
            EmergencyStatus::Historical => out.write_all(b"Historical")?,
            EmergencyStatus::Undefined => out.write_all(b"Undefined")?,

        }
        Ok(IsNull::No)
    }
}


#[cfg(feature = "diesel")]
impl FromSql<Varchar, Pg> for EmergencyStatus {
    fn from_sql(bytes: Option<&<Pg as Backend>::RawValue>) -> deserialize::Result<Self> {
        match not_none!(bytes) {
            b"Investigation" => Ok(EmergencyStatus::Investigation),
            b"Confirmed" => Ok(EmergencyStatus::Confirmed),
            b"Unconfirmed" => Ok(EmergencyStatus::Unconfirmed),
            b"Responding" => Ok(EmergencyStatus::Responding),
            b"Complete" => Ok(EmergencyStatus::Complete),
            b"Resolved" => Ok(EmergencyStatus::Resolved),
            b"Historical" => Ok(EmergencyStatus::Historical),
            b"Undefined" => Ok(EmergencyStatus::Undefined),
            _ => Err("Unrecognized enum variant".into()),
        }
    }
}