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use std::net::{SocketAddr, ToSocketAddrs};

use once_cell::sync::Lazy;
use themelio_nodeprot::TrustedHeight;
use themelio_structs::NetID;

/// DNS seed
static MAINNET_DNS_SEEDS: Lazy<Vec<SocketAddr>> = Lazy::new(|| {
    "mainnet-bootstrap.themelio.org:41814"
        .to_socket_addrs()
        .map(|iter| iter.collect::<Vec<_>>())
        .unwrap_or_default()
});

/// DNS seed
static TESTNET_DNS_SEEDS: Lazy<Vec<SocketAddr>> = Lazy::new(|| {
    "testnet-bootstrap.themelio.org:41814"
        .to_socket_addrs()
        .map(|iter| iter.collect::<Vec<_>>())
        .unwrap_or_default()
});

/// Obtains bootstrap nodes for a given NetID.
pub fn bootstrap_routes(network: NetID) -> Vec<SocketAddr> {
    match network {
        NetID::Mainnet => MAINNET_DNS_SEEDS.clone(),
        NetID::Testnet => TESTNET_DNS_SEEDS.clone(),
        _ => vec![],
    }
}

/// Obtains a checkpoint for a given NetID.
pub fn checkpoint_height(network: NetID) -> Option<TrustedHeight> {
    match network {
        NetID::Mainnet => Some(
            "1581184:95c7afa1a1ee3b7d050bdb601a946b2fb2306412aa0ab73322d53cba6da81c1b"
                .parse()
                .unwrap(),
        ),
        NetID::Testnet => Some(
            "72:f019035a08513da87eaec538e9f685b0c4ec72013bbfccb45ecf57d89d9d0efa"
                .parse()
                .unwrap(),
        ),
        _ => None,
    }
}

#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    fn get_bootstrap() {
        assert!(!bootstrap_routes(NetID::Mainnet).is_empty());
        assert!(!bootstrap_routes(NetID::Testnet).is_empty());
    }
}