syntax = "proto3";
option go_package="github.com/breez/lspd/cln_plugin/proto";

service ClnPlugin {
    rpc HtlcStream(stream HtlcResolution) returns (stream HtlcAccepted);
    rpc CustomMsgStream(CustomMessageRequest) returns (stream CustomMessage);
}

message HtlcAccepted {
    string correlationid = 1;
    Onion onion = 2;
    Htlc htlc = 3;
    string forward_to = 4;
}

message Onion {
    string payload = 1;
    string short_channel_id = 2;
    uint64 forward_msat = 3;
    uint32 outgoing_cltv_value = 4;
    string shared_secret = 5;
    string next_onion = 6;
}

message Htlc {
    string short_channel_id = 1;
    uint64 id = 2;
    uint64 amount_msat = 3;
    uint32 cltv_expiry = 4;
    int32 cltv_expiry_relative = 5;
    string payment_hash = 6;
}

message HtlcResolution {
    string correlationid = 1;
    oneof outcome {
        HtlcFail fail = 2;
        HtlcContinue continue = 3;
        HtlcResolve resolve = 4;
    }
}

message HtlcContinue {
    optional string payload = 1;
    optional string forward_to = 2;
}

message HtlcFail {
    oneof failure {
        string failure_message = 1;
        string failure_onion = 2;
    } 
}

message HtlcResolve {
    string payment_key = 1;
}

message CustomMessageRequest {}
message CustomMessage {
    string peer_id = 1;
    string payload = 2;
}