// 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.
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// 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.
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// INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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use std::sync::Arc;

use tari_comms::peer_manager::{NodeIdentity, PeerManager};
use tower::layer::Layer;

use super::middleware::DhtHandlerMiddleware;
use crate::{DhtConfig, DhtRequester, discovery::DhtDiscoveryRequester, outbound::OutboundMessageRequester};

pub struct DhtHandlerLayer {
    config: Arc<DhtConfig>,
    peer_manager: Arc<PeerManager>,
    node_identity: Arc<NodeIdentity>,
    dht: DhtRequester,
    outbound_service: OutboundMessageRequester,
    discovery_requester: DhtDiscoveryRequester,
}

impl DhtHandlerLayer {
    pub fn new(
        config: Arc<DhtConfig>,
        node_identity: Arc<NodeIdentity>,
        peer_manager: Arc<PeerManager>,
        dht: DhtRequester,
        discovery_requester: DhtDiscoveryRequester,
        outbound_service: OutboundMessageRequester,
    ) -> Self {
        Self {
            config,
            peer_manager,
            node_identity,
            dht,
            outbound_service,
            discovery_requester,
        }
    }
}

impl<S> Layer<S> for DhtHandlerLayer {
    type Service = DhtHandlerMiddleware<S>;

    fn layer(&self, service: S) -> Self::Service {
        DhtHandlerMiddleware::new(
            service,
            Arc::clone(&self.node_identity),
            Arc::clone(&self.peer_manager),
            self.outbound_service.clone(),
            self.dht.clone(),
            self.discovery_requester.clone(),
            self.config.clone(),
        )
    }
}
