use std::sync::Arc;

use nomos_core::{
    block::Block,
    mantle::{
        AuthenticatedMantleTx as _, SignedMantleTx, Transaction as MantleTx,
        ops::{Op, channel::MsgId},
    },
};
use testing_framework_core::scenario::{DynError, RunContext};
use tracing::debug;

/// Scans a block and invokes the matcher for every operation until it returns
/// `Some(...)`. Returns `None` when no matching operation is found.
pub fn find_channel_op<F>(block: &Block<SignedMantleTx>, matcher: &mut F) -> Option<MsgId>
where
    F: FnMut(&Op) -> Option<MsgId>,
{
    debug!(
        txs = block.transactions().len(),
        "scanning block for channel op"
    );
    for tx in block.transactions() {
        for op in &tx.mantle_tx().ops {
            if let Some(msg_id) = matcher(op) {
                return Some(msg_id);
            }
        }
    }

    None
}

/// Submits a transaction to the cluster, fanning out across clients until one
/// succeeds.
pub async fn submit_transaction_via_cluster(
    ctx: &RunContext,
    tx: Arc<SignedMantleTx>,
) -> Result<(), DynError> {
    let tx_hash = tx.hash();
    debug!(?tx_hash, "submitting transaction via cluster");
    ctx.cluster_client()
        .try_all_clients(|client| {
            let tx = Arc::clone(&tx);
            Box::pin(async move {
                let url = client.base_url().clone();
                debug!(?tx_hash, %url, "submitting transaction to client");
                let res = client
                    .submit_transaction(&tx)
                    .await
                    .map_err(|err| -> DynError { err.into() });
                if res.is_err() {
                    debug!(?tx_hash, %url, "transaction submission failed");
                }
                res
            })
        })
        .await
}