use geth_types::NodeId;
use serde::{Deserialize, Serialize};

#[derive(Clone, Debug, PartialEq, Eq, Serialize, Deserialize)]
pub struct PeerCard {
    pub node: NodeId,
    pub endpoints: Vec<String>,
    pub signed_by: String,
}

pub trait DiscoveryBackend {
    fn candidates(&self) -> Vec<PeerCard>;
}

#[must_use]
pub fn discovery_is_untrusted_note() -> &'static str {
    "discovery returns candidate peers only and never grants trust or authorization"
}