// file: crates/ksp-onchain-transport-lib/tests/yellowstone_publicnode_smoke.rs
// version: 3

//! Opt-in live PublicNode Mainnet/Testnet smokes for authenticated provider-neutral Yellowstone gRPC Subscribe.

use std::io::IsTerminal; // rust-rules: trait-import

static PUBLICNODE_X_TOKEN: std::sync::OnceLock<std::string::String> = std::sync::OnceLock::new();

fn publicnode_x_token() -> &'static str {
    return PUBLICNODE_X_TOKEN
        .get_or_init(|| {
            assert!(
                !std::io::stdin().is_terminal(),
                "pipe the PublicNode personal x-token to this ignored smoke on stdin; never pass it as a command-line argument"
            );
            let mut token = std::string::String::new();
            std::io::stdin().read_line(&mut token).expect("PublicNode x-token must be readable from smoke stdin");
            let token = token.trim().to_owned();
            assert!(!token.is_empty(), "PublicNode x-token provided on smoke stdin must not be empty");
            return token;
        })
        .as_str();
}

fn publicnode_endpoint(
    name: &str,
    cluster: &str,
    url: &str,
    x_token: &str,
) -> ksp_core_lib::Result<ksp_onchain_transport_lib::YellowstoneGrpcEndpointSettings> {
    let url = match ksp_onchain_transport_lib::YellowstoneGrpcEndpointUrl::parse(url) {
        std::result::Result::Ok(value) => value,
        std::result::Result::Err(error) => return std::result::Result::Err(error),
    };
    let session = ksp_onchain_transport_lib::YellowstoneGrpcSessionSettings::new(
        std::time::Duration::from_secs(10),
        std::time::Duration::from_secs(10),
        std::time::Duration::from_secs(5),
        ksp_onchain_transport_lib::YellowstoneGrpcReconnectSettings::new(0, std::time::Duration::from_millis(250), std::time::Duration::from_secs(2)),
        8,
        8,
        16 * 1024 * 1024,
        4 * 1024 * 1024,
    );
    let endpoint = ksp_onchain_transport_lib::YellowstoneGrpcEndpointSettings::new(
        name,
        true,
        ksp_onchain_transport_lib::YellowstoneGrpcProviderName::new("publicnode"),
        ksp_onchain_transport_lib::YellowstoneGrpcClusterName::new(cluster),
        url,
        session,
    );
    let metadata = ksp_onchain_transport_lib::YellowstoneGrpcMetadataEntry::secret("x-token", x_token)?;
    return endpoint.with_metadata(vec![metadata]);
}

fn slot_request() -> ksp_core_lib::Result<ksp_onchain_transport_lib::YellowstoneSubscribeRequest> {
    let mut request = ksp_onchain_transport_lib::YellowstoneSubscribeRequest::new();
    let name = match ksp_onchain_transport_lib::YellowstoneSubscribeFilterName::new("slots") {
        std::result::Result::Ok(value) => value,
        std::result::Result::Err(error) => return std::result::Result::Err(error),
    };
    request.insert_slot_filter(name, ksp_onchain_transport_lib::YellowstoneSubscribeSlotFilter::new())?;
    return std::result::Result::Ok(request);
}

async fn assert_publicnode_slot_stream(name: &str, cluster: &str, url: &str) {
    let endpoint = publicnode_endpoint(name, cluster, url, publicnode_x_token())
        .expect("programmatic PublicNode Yellowstone settings must accept secret x-token metadata");
    let endpoint_debug = format!("{endpoint:?}");
    assert!(!endpoint_debug.contains(publicnode_x_token()), "PublicNode x-token must not appear in endpoint Debug");
    let channel = ksp_onchain_transport_lib::YellowstoneGrpcChannel::connect(&endpoint).await.expect("PublicNode Yellowstone TLS connection must succeed");
    assert_eq!(channel.endpoint_name(), name);
    assert_eq!(channel.provider().as_str(), "publicnode");
    assert_eq!(channel.cluster().as_str(), cluster);
    let request = slot_request().expect("PublicNode Yellowstone slot request must be valid");
    let mut session = channel.open_standard_subscribe(request).await.expect("PublicNode Yellowstone authenticated Subscribe must open");
    let slot = tokio::time::timeout(std::time::Duration::from_secs(20), async {
        loop {
            match session.next_update().await.expect("PublicNode Yellowstone Subscribe update must decode") {
                std::option::Option::Some(ksp_onchain_transport_lib::YellowstoneSubscribeUpdate::Slot(update)) => break update.slot(),
                std::option::Option::Some(_) => {},
                std::option::Option::None => panic!("PublicNode Yellowstone Subscribe ended before a slot update"),
            }
        }
    })
    .await
    .expect("PublicNode Yellowstone Subscribe must publish a slot update before the smoke deadline");
    assert!(slot > 0);
    session.close().await.expect("PublicNode Yellowstone Subscribe must close cleanly");
}

#[tokio::test(flavor = "current_thread")]
#[ignore = "opt-in live PublicNode Mainnet Yellowstone gRPC smoke; reads one personal x-token from stdin and performs an external TLS/Subscribe request"]
async fn publicnode_mainnet_yellowstone_streams_slots_with_secret_x_token() {
    assert_publicnode_slot_stream("publicnode_mainnet_yellowstone", "mainnet-beta", "https://solana-yellowstone-grpc.publicnode.com:443").await;
}

#[tokio::test(flavor = "current_thread")]
#[ignore = "opt-in live PublicNode Testnet Yellowstone gRPC smoke; reuses the personal x-token read from stdin and performs an external TLS/Subscribe request"]
async fn publicnode_testnet_yellowstone_streams_slots_with_secret_x_token() {
    assert_publicnode_slot_stream("publicnode_testnet_yellowstone", "testnet", "https://solana-testnet-yellowstone-grpc.publicnode.com:443").await;
}