syntax = "proto3";

package lnrpc;

service Lightning {
    rpc WalletBalance(WalletBalanceRequest) returns (WalletBalanceResponse);
    rpc SendMany(SendManyRequest) returns (SendManyResponse);
    rpc SendCoins(SendCoinsRequest) returns (SendCoinsResponse);
    rpc NewAddress(NewAddressRequest) returns (NewAddressResponse);

    rpc ConnectPeer(ConnectPeerRequest) returns (ConnectPeerResponse);
    rpc ListPeers(ListPeersRequest) returns (ListPeersResponse);
    rpc GetInfo(GetInfoRequest) returns (GetInfoResponse);

    rpc OpenChannel(OpenChannelRequest) returns (stream OpenStatusUpdate);
    rpc CloseChannel(CloseChannelRequest) returns (stream CloseStatusUpdate);
    rpc PendingChannels(PendingChannelRequest) returns (PendingChannelResponse);

    rpc SendPayment(stream SendRequest) returns (stream SendResponse);
    rpc ShowRoutingTable(ShowRoutingTableRequest) returns (ShowRoutingTableResponse);
}

message SendRequest {
    bytes dest = 1;
    int64 amt = 2;
    bytes payment_hash = 3;

    bool fast_send = 4;
}
message SendResponse{
    // TODO(roasbeef): info about route? stats?
}

message ChannelPoint {
    bytes funding_txid = 1;
    uint32 output_index = 2;
}

message LightningAddress {
    string pubKeyHash = 1;
    string host = 2;
}

message SendManyRequest {
    map<string, int64> AddrToAmount = 1;
}
message SendManyResponse {
    string txid = 1;
}

message SendCoinsRequest {
    string addr = 1;
    int64 amount = 2;
}
message SendCoinsResponse {
    string txid = 1;
}

message NewAddressRequest {
    enum AddressType {
        WITNESS_PUBKEY_HASH = 0;
        NESTED_PUBKEY_HASH = 1;
        PUBKEY_HASH = 2;
    }

    AddressType type = 1;
}
message NewAddressResponse {
    string address = 1;
}

message ConnectPeerRequest {
    LightningAddress addr = 1;
}
message ConnectPeerResponse {
    int32 peer_id = 1;
}

message HTLC {
    int64 id = 1;

    int64 amount = 2;

    bytes hash_lock = 3;

    bool to_us = 4;
}

message ActiveChannel {
    // TODO(roasbeef): make channel points a string everywhere in rpc?
    string remote_id = 1;
    string channel_point = 2;

    int64 capacity = 3;
    int64 local_balance = 4;
    int64 remote_balance = 5;

    int64 unsettled_belance = 6;
    repeated HTLC pending_htlcs = 7;

    uint64 num_updates = 8;
    // TODO(roasbeef): other stuffs
}

message Peer {
    string lightning_id = 1;
    int32 peer_id = 2;
    string address = 3;

    uint64 bytes_sent = 4;
    uint64 bytes_recv = 5;

    int64 sat_sent = 6;
    int64 sat_recv = 7;

    bool inbound = 8;

    // TODO(roasbeef): add pending channels
    repeated ActiveChannel channels = 9;
}

message ListPeersRequest {}
message ListPeersResponse {
    repeated Peer peers = 1;
}

message GetInfoRequest{}
message GetInfoResponse {
    string lightning_id = 1;
    string identity_address = 2;

    uint32 num_pending_channels = 3;
    uint32 num_active_channels = 4;

    uint32 num_peers = 5;
}

message ConfirmationUpdate {
    bytes block_sha = 1;
    int32 block_height = 2;

    uint32 num_confs_left = 3;
}

message ChannelOpenUpdate {
   ChannelPoint channel_point = 1;
}

message ChannelCloseUpdate {
    bytes closing_txid = 1;

    bool success = 2;
}

message CloseChannelRequest {
    ChannelPoint channel_point = 1;
    int64 time_limit = 2;
    bool allow_force_close = 3;
}
message CloseStatusUpdate {
    oneof update {
        PendingUpdate close_pending = 1;
        ConfirmationUpdate confirmation = 2;
        ChannelCloseUpdate chan_close = 3;
    }
}

message PendingUpdate {
    bytes txid = 1;
}

message OpenChannelRequest {
    int32 target_peer_id = 1;
    LightningAddress target_node = 2;

    int64 local_funding_amount = 3;
    int64 remote_funding_amount = 4;

    int64 commission_size = 5;

    uint32 num_confs = 6;
}
message OpenStatusUpdate {
    oneof update {
        PendingUpdate chan_pending = 1;
        ConfirmationUpdate confirmation = 2;
        ChannelOpenUpdate chan_open = 3;
    }
}

enum ChannelStatus {
    ALL = 0;
    OPENING = 1;
    CLOSING = 2;
}
message PendingChannelRequest {
    ChannelStatus status = 1;
}
message PendingChannelResponse {
    message PendingChannel {
        int32 peer_id = 1;

        string lightning_id = 2;
        string channel_point = 3;

        int64 capacity = 4;
        int64 local_balance = 5;
        int64 remote_balance = 6;

        string closing_txid = 7;

        ChannelStatus status = 8;
    }

    repeated PendingChannel pending_channels = 1;
}

message WalletBalanceRequest {
    bool witness_only = 1;
}
message WalletBalanceResponse {
    double balance = 1;
}

message ShowRoutingTableRequest {
}

message ShowRoutingTableResponse {
    string rt = 1;
}