smmo-api 0.1.0

A simple wrapper around the simple-mmo api (https://web.simple-mmo.com/p-api/home).
Documentation 
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use chrono::{DateTime, TimeZone, Utc};
use serde::{Deserialize, Deserializer, Serialize, Serializer};

pub fn serialize_option_datefmt<S: Serializer>(
    time: &DateTime<Utc>,
    serializer: S,
) -> Result<S::Ok, S::Error> {
    time.to_rfc3339().serialize(serializer)
}

const FORMAT: &str = "%Y-%m-%d %H:%M:%S";

fn datefmt<'de, D>(deserializer: D) -> Result<DateTime<Utc>, D::Error>
where
    D: Deserializer<'de>,
{
    let s = String::deserialize(deserializer)?;
    Utc.datetime_from_str(&s, FORMAT)
        .map_err(serde::de::Error::custom)
}

pub fn deserialize_option_datefmt<'de, D>(
    deserializer: D,
) -> Result<Option<DateTime<Utc>>, D::Error>
where
    D: Deserializer<'de>,
{
    #[derive(Deserialize)]
    struct Wrapper(#[serde(deserialize_with = "datefmt")] DateTime<Utc>);

    let v = Option::deserialize(deserializer)?;
    Ok(v.map(|Wrapper(a)| a))
}