use std::collections::HashMap;

use rand_core::OsRng;

use ciphersuite::{
  group::{ff::Field, GroupEncoding},
  Ciphersuite, Ristretto,
};

use serai_primitives::NetworkId;

use dockertest::{PullPolicy, Image, LogAction, LogPolicy, LogSource, LogOptions, Composition};

pub type MessageQueuePrivateKey = <Ristretto as Ciphersuite>::F;
pub fn instance(
) -> (MessageQueuePrivateKey, HashMap<NetworkId, MessageQueuePrivateKey>, Composition) {
  serai_docker_tests::build("message-queue".to_string());

  let coord_key = <Ristretto as Ciphersuite>::F::random(&mut OsRng);
  let priv_keys = HashMap::from([
    (NetworkId::Bitcoin, <Ristretto as Ciphersuite>::F::random(&mut OsRng)),
    (NetworkId::Ethereum, <Ristretto as Ciphersuite>::F::random(&mut OsRng)),
    (NetworkId::Monero, <Ristretto as Ciphersuite>::F::random(&mut OsRng)),
  ]);

  let mut composition = Composition::with_image(
    Image::with_repository("serai-dev-message-queue").pull_policy(PullPolicy::Never),
  )
  .with_log_options(Some(LogOptions {
    action: LogAction::Forward,
    policy: LogPolicy::Always,
    source: LogSource::Both,
  }))
  .with_env(
    [
      ("COORDINATOR_KEY".to_string(), hex::encode((Ristretto::generator() * coord_key).to_bytes())),
      (
        "BITCOIN_KEY".to_string(),
        hex::encode((Ristretto::generator() * priv_keys[&NetworkId::Bitcoin]).to_bytes()),
      ),
      (
        "ETHEREUM_KEY".to_string(),
        hex::encode((Ristretto::generator() * priv_keys[&NetworkId::Ethereum]).to_bytes()),
      ),
      (
        "MONERO_KEY".to_string(),
        hex::encode((Ristretto::generator() * priv_keys[&NetworkId::Monero]).to_bytes()),
      ),
      ("DB_PATH".to_string(), "./message-queue-db".to_string()),
      ("RUST_LOG".to_string(), "serai_message_queue=trace,".to_string()),
    ]
    .into(),
  );
  composition.publish_all_ports();

  (coord_key, priv_keys, composition)
}

#[test]
fn basic_functionality() {
  use zeroize::Zeroizing;

  use dockertest::DockerTest;

  use serai_message_queue::{Service, Metadata, client::MessageQueue};

  let mut test = DockerTest::new();
  let (coord_key, priv_keys, composition) = instance();
  test.add_composition(composition);
  test.run(|ops| async move {
    // Sleep for a second for the message-queue to boot
    // It isn't an error to start immediately, it just silences an error
    tokio::time::sleep(core::time::Duration::from_secs(1)).await;

    let rpc = ops.handle("serai-dev-message-queue").host_port(2287).unwrap();
    let rpc = rpc.0.to_string() + ":" + &rpc.1.to_string();

    // Queue some messages
    let coordinator =
      MessageQueue::new(Service::Coordinator, rpc.clone(), Zeroizing::new(coord_key));
    coordinator
      .queue(
        Metadata {
          from: Service::Coordinator,
          to: Service::Processor(NetworkId::Bitcoin),
          intent: b"intent".to_vec(),
        },
        b"Hello, World!".to_vec(),
      )
      .await;

    // Queue this twice, which message-queue should de-duplicate
    for _ in 0 .. 2 {
      coordinator
        .queue(
          Metadata {
            from: Service::Coordinator,
            to: Service::Processor(NetworkId::Bitcoin),
            intent: b"intent 2".to_vec(),
          },
          b"Hello, World, again!".to_vec(),
        )
        .await;
    }

    // Successfully get it
    let bitcoin = MessageQueue::new(
      Service::Processor(NetworkId::Bitcoin),
      rpc,
      Zeroizing::new(priv_keys[&NetworkId::Bitcoin]),
    );
    let msg = bitcoin.next(0).await;
    assert_eq!(msg.from, Service::Coordinator);
    assert_eq!(msg.id, 0);
    assert_eq!(&msg.msg, b"Hello, World!");

    // If we don't ack it, it should continue to be returned
    assert_eq!(msg, bitcoin.next(0).await);

    // Acknowledging it should yield the next message
    bitcoin.ack(0).await;

    let next_msg = bitcoin.next(1).await;
    assert!(msg != next_msg);
    assert_eq!(next_msg.from, Service::Coordinator);
    assert_eq!(next_msg.id, 1);
    assert_eq!(&next_msg.msg, b"Hello, World, again!");
    bitcoin.ack(1).await;

    // No further messages should be available
    tokio::time::timeout(core::time::Duration::from_secs(10), bitcoin.next(2)).await.unwrap_err();
  });
}