use std::ops::Deref;

type Value = uuidv7::Uuid;

pub struct Uuid(pub Value);

#[juniper::graphql_scalar(name = "UUID", description = "UUID encoded as a string")]
impl<S> GraphQLScalar for Uuid
where
    S: juniper::ScalarValue,
{
    fn resolve(&self) -> juniper::Value {
        juniper::Value::scalar(self.0.to_string())
    }

    fn from_input_value(value: &juniper::InputValue) -> Option<Uuid> {
        value
            .as_string_value()
            .and_then(|s| {
                use uuid_simd::UuidExt;
                use uuidv7::Uuid;

                Uuid::parse(s.as_bytes()).ok()
            })
            .map(Uuid)
    }

    fn from_str<'a>(value: juniper::ScalarToken<'a>) -> juniper::ParseScalarResult<'a, S> {
        <String as juniper::ParseScalarValue<S>>::from_str(value)
    }
}

impl Deref for Uuid {
    type Target = Value;

    fn deref(&self) -> &Self::Target {
        &self.0
    }
}