use serde::{Deserialize, Deserializer, Serializer};
use chrono::{DateTime, SecondsFormat, Utc};

pub fn serialize<S>(date: &DateTime<Utc>, serializer: S) -> Result<S::Ok, S::Error>
where
    S: Serializer,
{
    serializer.serialize_str(&date.to_rfc3339_opts(SecondsFormat::Millis, true))
}

pub fn deserialize<'de, D>(deserializer: D) -> Result<DateTime<Utc>, D::Error>
where
    D: Deserializer<'de>,
{
    let s = String::deserialize(deserializer)?;
    DateTime::parse_from_rfc3339(&s)
        .map(|d| d.with_timezone(&Utc))
        .map_err(serde::de::Error::custom)
}