use crate::testutils::{init_alice, init_bob};
use futures::{
    future::{join, select},
    FutureExt,
};
use get_port::get_port;
use libp2p::Multiaddr;
use rand::rngs::OsRng;
use swap::{alice, bob};
use testcontainers::clients::Cli;
use testutils::init_tracing;
use uuid::Uuid;
use xmr_btc::{bitcoin, config::Config};

pub mod testutils;

/// Run the following tests with RUST_MIN_STACK=10000000

#[tokio::test]
async fn happy_path() {
    let _guard = init_tracing();

    let cli = Cli::default();
    let (
        monero,
        testutils::Containers {
            bitcoind,
            monerods: _monerods,
        },
    ) = testutils::init_containers(&cli).await;

    let btc_to_swap = bitcoin::Amount::from_sat(1_000_000);
    let btc_alice = bitcoin::Amount::ZERO;
    let btc_bob = btc_to_swap * 10;

    // this xmr value matches the logic of alice::calculate_amounts i.e. btc *
    // 10_000 * 100
    let xmr_to_swap = xmr_btc::monero::Amount::from_piconero(1_000_000_000_000);
    let xmr_alice = xmr_to_swap * 10;
    let xmr_bob = xmr_btc::monero::Amount::ZERO;

    let port = get_port().expect("Failed to find a free port");
    let alice_multiaddr: Multiaddr = format!("/ip4/127.0.0.1/tcp/{}", port)
        .parse()
        .expect("failed to parse Alice's address");

    let config = Config::regtest();

    let (
        alice_state,
        mut alice_event_loop,
        alice_event_loop_handle,
        alice_btc_wallet,
        alice_xmr_wallet,
        alice_db,
    ) = init_alice(
        &bitcoind,
        &monero,
        btc_to_swap,
        xmr_to_swap,
        xmr_alice,
        alice_multiaddr.clone(),
        config,
    )
    .await;

    let (bob_state, bob_event_loop, bob_event_loop_handle, bob_btc_wallet, bob_xmr_wallet, bob_db) =
        init_bob(
            alice_multiaddr.clone(),
            alice_event_loop.peer_id(),
            &bitcoind,
            &monero,
            btc_to_swap,
            btc_bob,
            xmr_to_swap,
            config,
        )
        .await;

    let alice_swap_fut = alice::swap::swap(
        alice_state,
        alice_event_loop_handle,
        alice_btc_wallet.clone(),
        alice_xmr_wallet.clone(),
        config,
        Uuid::new_v4(),
        alice_db,
    )
    .boxed();

    let alice_peer_id = alice_event_loop.peer_id();
    let alice_fut = select(alice_swap_fut, alice_event_loop.run().boxed());

    let bob_swap_fut = bob::swap::swap(
        bob_state,
        bob_event_loop_handle,
        bob_db,
        bob_btc_wallet.clone(),
        bob_xmr_wallet.clone(),
        OsRng,
        Uuid::new_v4(),
        alice_peer_id,
        alice_multiaddr,
    )
    .boxed();

    let bob_fut = select(bob_swap_fut, bob_event_loop.run().boxed());

    join(alice_fut, bob_fut).await;

    let btc_alice_final = alice_btc_wallet.as_ref().balance().await.unwrap();
    let btc_bob_final = bob_btc_wallet.as_ref().balance().await.unwrap();

    let xmr_alice_final = alice_xmr_wallet.as_ref().get_balance().await.unwrap();

    bob_xmr_wallet.as_ref().0.refresh().await.unwrap();
    let xmr_bob_final = bob_xmr_wallet.as_ref().get_balance().await.unwrap();

    assert_eq!(
        btc_alice_final,
        btc_alice + btc_to_swap - bitcoin::Amount::from_sat(bitcoin::TX_FEE)
    );
    assert!(btc_bob_final <= btc_bob - btc_to_swap);

    assert!(xmr_alice_final <= xmr_alice - xmr_to_swap);
    assert_eq!(xmr_bob_final, xmr_bob + xmr_to_swap);
}