//! Helpers for channel-oriented tests.
use crate::support::{default_test_credentials, test_auth_manager};
use niom_turn::alloc::AllocationManager;
use niom_turn::auth::{AuthManager, InMemoryStore};
use niom_turn::constants::ATTR_NONCE;
use niom_turn::models::stun::StunMessage;
use std::net::SocketAddr;
use std::sync::Arc;
use tokio::net::UdpSocket;

pub fn sample_channel_number() -> u16 {
    0x4001
}

pub fn sample_peer() -> SocketAddr {
    "127.0.0.1:43000".parse().expect("peer addr")
}

pub fn sample_payload() -> Vec<u8> {
    b"some-channel-payload".to_vec()
}

pub fn build_auth_manager() -> AuthManager<InMemoryStore> {
    let (user, password) = default_test_credentials();
    test_auth_manager(user, password)
}

pub async fn spawn_udp_server(
    auth: AuthManager<InMemoryStore>,
    allocs: AllocationManager,
) -> SocketAddr {
    let server = UdpSocket::bind("127.0.0.1:0").await.expect("udp bind");
    let addr = server.local_addr().expect("udp addr");
    let arc = Arc::new(server);
    let reader = arc.clone();
    let auth_clone = auth.clone();
    let alloc_clone = allocs.clone();
    tokio::spawn(async move {
        let _ = niom_turn::server::udp_reader_loop(reader, auth_clone, alloc_clone).await;
    });
    addr
}

pub fn extract_nonce(msg: &StunMessage) -> Option<String> {
    msg.attributes
        .iter()
        .find(|attr| attr.typ == ATTR_NONCE)
        .and_then(|attr| String::from_utf8(attr.value.clone()).ok())
}