// Copyright 2019. The Tari Project
//
// Redistribution and use in source and binary forms, with or without modification, are permitted provided that the
// following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following
// disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the
// following disclaimer in the documentation and/or other materials provided with the distribution.
//
// 3. Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote
// products derived from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
// INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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// USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

use std::sync::Arc;

use log::*;
use tari_comms::peer_manager::NodeId;
use tari_transaction_components::transaction_components::Transaction;
use tokio::sync::mpsc::UnboundedSender;

use crate::mempool::service::MempoolServiceError;

pub const LOG_TARGET: &str = "c::mp::service::outbound_interface";

/// The OutboundMempoolServiceInterface provides an interface to request information from the Mempools of remote Base
/// nodes.
#[derive(Clone)]
pub struct OutboundMempoolServiceInterface {
    tx_sender: UnboundedSender<(Arc<Transaction>, Vec<NodeId>)>,
}

impl OutboundMempoolServiceInterface {
    /// Construct a new OutboundMempoolServiceInterface with the specified SenderService.
    pub fn new(tx_sender: UnboundedSender<(Arc<Transaction>, Vec<NodeId>)>) -> Self {
        Self { tx_sender }
    }

    /// Transmit a transaction to remote base nodes, excluding the provided peers.
    pub async fn propagate_tx(
        &mut self,
        transaction: Arc<Transaction>,
        exclude_peers: Vec<NodeId>,
    ) -> Result<(), MempoolServiceError> {
        self.tx_sender.send((transaction, exclude_peers)).map_err(|e| {
            error!(target: LOG_TARGET, "Could not broadcast transaction. {e:?}");
            MempoolServiceError::BroadcastFailed
        })
    }
}
