use cid::Cid;
use serde::{Deserialize, Deserializer, Serialize, Serializer};

pub fn cid_from_string<'de, D: Deserializer<'de>>(deserializer: D) -> Result<Cid, D::Error> {
    let str = String::deserialize(deserializer)?;

    Cid::try_from(str).map_err(serde::de::Error::custom)
}

pub fn cid_as_str<S>(inp: &Cid, serializer: S) -> Result<S::Ok, S::Error>
where
    S: Serializer,
{
    inp.to_string().serialize(serializer)
}

#[derive(Debug, Deserialize, Serialize)]
pub struct LinkRef {
    #[serde(rename = "$link")]
    link: String,
}

pub fn cid_as_link<S>(inp: &Cid, serializer: S) -> Result<S::Ok, S::Error>
where
    S: Serializer,
{
    LinkRef {
        link: inp.to_string(),
    }
        .serialize(serializer)
}