syntax = "proto3";

import "google/api/annotations.proto";

package lnrpc;

service Lightning {
    rpc WalletBalance(WalletBalanceRequest) returns (WalletBalanceResponse) {
        option (google.api.http) = {
            get: "/v1/balance/blockchain"
        };
    }
    rpc ChannelBalance(ChannelBalanceRequest) returns (ChannelBalanceResponse) {
        option (google.api.http) = {
            get: "/v1/balance/channels"
        };
    }

    rpc GetTransactions(GetTransactionsRequest) returns (TransactionDetails) {
        option (google.api.http) = {
            get: "/v1/transactions" 
        };
    }
    rpc SendCoins(SendCoinsRequest) returns (SendCoinsResponse) {
        option (google.api.http) = {
            post: "/v1/transactions"
            body: "*"
        };
    }
    rpc SubscribeTransactions(GetTransactionsRequest) returns (stream Transaction);

    rpc SendMany(SendManyRequest) returns (SendManyResponse);

    rpc NewAddress(NewAddressRequest) returns (NewAddressResponse);
    rpc NewWitnessAddress(NewWitnessAddressRequest) returns (NewAddressResponse) {
        option (google.api.http) = {
            get: "/v1/newaddress"
        };
    }

    rpc ConnectPeer(ConnectPeerRequest) returns (ConnectPeerResponse) {
        option (google.api.http) = {
            post: "/v1/peers"
            body: "*"
        };
    }
    rpc ListPeers(ListPeersRequest) returns (ListPeersResponse) {
        option (google.api.http) = {
            get: "/v1/peers"
        };
    }
    rpc GetInfo(GetInfoRequest) returns (GetInfoResponse) {
        option (google.api.http) = {
            get: "/v1/getinfo"
        };
    }

    // TODO(roasbeef): merge with below with bool?
    rpc PendingChannels(PendingChannelRequest) returns (PendingChannelResponse) {
        option (google.api.http) = {
           get: "/v1/channels/pending"
        };
    }
    rpc ListChannels(ListChannelsRequest) returns (ListChannelsResponse) {
        option (google.api.http) = {
            get: "/v1/channels"
        };
    }
    rpc OpenChannelSync(OpenChannelRequest) returns (ChannelPoint) {
        option (google.api.http) = {
            post: "/v1/channels"
            body: "*"
        };
    }

    rpc OpenChannel(OpenChannelRequest) returns (stream OpenStatusUpdate);

    rpc CloseChannel(CloseChannelRequest) returns (stream CloseStatusUpdate) {
        option (google.api.http) = {
            delete: "/v1/channels/{channel_point.funding_txid}/{channel_point.output_index}/{force}"
        };
    }

    rpc SendPayment(stream SendRequest) returns (stream SendResponse);

    rpc SendPaymentSync(SendRequest) returns (SendResponse) {
        option (google.api.http) = {
            post: "/v1/channels/transactions"
            body: "*"
        };
    }

    rpc AddInvoice(Invoice) returns (AddInvoiceResponse) {
        option (google.api.http) = {
            post: "/v1/invoices"
            body: "*"
        };
    }
    rpc ListInvoices(ListInvoiceRequest) returns (ListInvoiceResponse) {
        option (google.api.http) = {
            get: "/v1/invoices/{pending_only}"
        };
    }
    rpc LookupInvoice(PaymentHash) returns (Invoice) {
        option (google.api.http) = {
            get: "/v1/invoices/{r_hash_str}"
        };
    }
    rpc SubscribeInvoices(InvoiceSubscription) returns (stream Invoice) {
        option (google.api.http) = {
            get: "/v1/invoices/subscribe"
        };
    }

    rpc ListPayments(ListPaymentsRequest) returns (ListPaymentsResponse){
        option (google.api.http) = {
            get: "/v1/payments"
        };
    };

    rpc DeleteAllPayments(DeleteAllPaymentsRequest) returns (DeleteAllPaymentsResponse) {
        option (google.api.http) = {
            delete: "/v1/payments"
        };
    };

    rpc DescribeGraph(ChannelGraphRequest) returns (ChannelGraph) {
        option (google.api.http) = {
            get: "/v1/graph"
        };
    }

    rpc GetChanInfo(ChanInfoRequest) returns (ChannelEdge) {
        option (google.api.http) = {
            get: "/v1/graph/edge/{chan_id}"
        };
    }

    rpc GetNodeInfo(NodeInfoRequest) returns (NodeInfo) {
        option (google.api.http) = {
            get: "/v1/graph/node/{pub_key}"
        };
    }

    rpc QueryRoute(RouteRequest) returns (Route) {
        option (google.api.http) = {
            get: "/v1/graph/route/{pub_key}/{amt}"
        };
    }

    rpc GetNetworkInfo(NetworkInfoRequest) returns (NetworkInfo) {
        option (google.api.http) = {
            get: "/v1/graph/info"
        };
    }

    rpc SetAlias(SetAliasRequest) returns (SetAliasResponse);
}

message Transaction {
    string tx_hash = 1;
    double amount = 2;
    int32 num_confirmations = 3;
    string block_hash = 4;
    int32 block_height = 5;
    int64 time_stamp = 6;
    int64 total_fees = 7;
}
message GetTransactionsRequest {
}
message TransactionDetails {
    repeated Transaction transactions = 1;
}

message SendRequest {
    bytes dest = 1;
    string dest_string = 2;

    int64 amt = 3;

    bytes payment_hash = 4;
    string payment_hash_string = 5;

    bool fast_send = 6;
}
message SendResponse {
    // TODO(roasbeef): info about route? stats?
}

message ChannelPoint {
    bytes funding_txid = 1;
    string funding_txid_str = 2;
    uint32 output_index = 3;
}

message LightningAddress {
    string pubkey = 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 NewWitnessAddressRequest {}
message NewAddressResponse {
    string address = 1;
}

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

message HTLC {
    bool incoming = 1;
    int64 amount = 2;
    bytes hash_lock = 3;
    uint32 expiration_height = 4;
    uint32 revocation_delay = 5;
}

message ActiveChannel {
    string remote_pubkey = 1;
    string channel_point = 2;
    uint64 chan_id = 3;

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

    int64 unsettled_balance = 7;
    int64 total_satoshis_sent = 8;
    int64 total_satoshis_received = 9;
    uint64 num_updates = 10;

    repeated HTLC pending_htlcs = 11;
}

message ListChannelsRequest {}
message ListChannelsResponse {
    repeated ActiveChannel channels = 11;
}

message Peer {
    string pub_key = 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;
}

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

message GetInfoRequest{}
message GetInfoResponse {
    string identity_pubkey = 1;
    string alias = 2;

    uint32 num_pending_channels = 3;
    uint32 num_active_channels = 4;

    uint32 num_peers = 5;

    uint32 block_height = 6;
    string block_hash  = 8;

    bool synced_to_chain = 9;
    bool testnet = 10;
}

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 force = 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;

    bytes node_pubkey = 2;

    string node_pubkey_string = 3;

    int64 local_funding_amount = 4;
    int64 remote_funding_amount = 5;

    int64 commission_size = 6;

    uint32 num_confs = 7;
}
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 identity_key = 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 ChannelBalanceRequest {
}
message ChannelBalanceResponse {
    int64 balance = 1;
}

message RouteRequest {
    string pub_key = 1;
    int64 amt = 2;
}

message Hop {
    uint64 chan_id = 1;
    int64 chan_capacity = 2;
    int64 amt_to_forward = 3;
    int64 fee = 4;
}

message Route {
    uint32 total_time_lock = 1;
    int64 total_fees = 2;
    int64 total_amt = 3;

    repeated Hop hops = 4;
}

message NodeInfoRequest{
    string pub_key = 1; 
}

message NodeInfo {
    LightningNode node = 1;

    uint32 num_channels = 2;
    int64 total_capacity = 3;
}

message LightningNode {
    uint32 last_update = 1;
    string pub_key = 2;
    string address = 3;
    string alias = 4;
}

message RoutingPolicy {
    uint32 time_lock_delta = 1;
    int64 min_htlc = 2;
    int64 fee_base_msat = 3;
    int64 fee_rate_milli_msat = 4;
}

message ChannelEdge {
    uint64 channel_id = 1;
    string chan_point = 2;

    uint32 last_update = 3;

    string node1_pub = 4;
    string node2_pub = 5;

    int64 capacity = 6;

    RoutingPolicy node1_policy = 7;
    RoutingPolicy node2_policy = 8;
}

message ChannelGraphRequest{}

message ChannelGraph {
    repeated LightningNode nodes = 1;
    repeated ChannelEdge edges = 2;
}

message ChanInfoRequest {
    uint64 chan_id = 1;
}

message NetworkInfoRequest{}
message NetworkInfo {
    uint32 graph_diameter = 1;
    double avg_out_degree = 2;
    uint32 max_out_degree = 3;

    uint32 num_nodes = 4;
    uint32 num_channels = 5;

    int64 total_network_capacity = 6;

    double avg_channel_size = 7;
    int64 min_channel_size = 8;
    int64 max_channel_size = 9;

    // TODO(roasbeef): fee rate info, expiry
    //  * also additional RPC for tracking fee info once in
}

message SetAliasRequest {
    string new_alias = 1;
}
message SetAliasResponse{}

message Invoice {
    string memo = 1;
    bytes receipt = 2;

    bytes r_preimage = 3;
    bytes r_hash = 4;

    int64 value = 5;

    bool settled = 6;

    int64 creation_date = 7;
    int64 settle_date = 8;
}
message AddInvoiceResponse {
    bytes r_hash = 1;
}
message PaymentHash {
    string r_hash_str = 1;
    bytes r_hash = 2;
}
message ListInvoiceRequest {
    bool pending_only = 1;
}
message ListInvoiceResponse {
    repeated Invoice invoices = 1;
}

message InvoiceSubscription {}


message Payment {
    string r_hash = 1;

    int64 value = 2;

    int64 creation_date = 3;
    repeated string path = 4;
    int64 fee = 5;
}

message ListPaymentsRequest {
}

message ListPaymentsResponse {
    repeated Payment payments = 1;
}

message DeleteAllPaymentsRequest {
}

message DeleteAllPaymentsResponse {
}