syntax = "proto3";

package boltzrpc;
option go_package = "github.com/BoltzExchange/boltz-client/boltzrpc";
import "google/protobuf/empty.proto";

service Boltz {
    /*
    Gets general information about the daemon like the chain of the lightning node it is connected to
    and the IDs of pending swaps.
     */
    rpc GetInfo (GetInfoRequest) returns (GetInfoResponse);

    /*
    Fetches the latest limits and fees from the Boltz backend API it is connected to.
    */
    rpc GetServiceInfo (GetServiceInfoRequest) returns (GetServiceInfoResponse) {
        option deprecated = true;
    };

    /*
    Fetches information about a specific pair for a chain swap.
    */
    rpc GetPairInfo (GetPairInfoRequest) returns (PairInfo);

    /*
    Fetches all available pairs for submarine and reverse swaps.
    */
    rpc GetPairs (google.protobuf.Empty) returns (GetPairsResponse);

    /*
    Returns a list of all swaps, reverse swaps, and chain swaps in the database.
    */
    rpc ListSwaps (ListSwapsRequest) returns (ListSwapsResponse);

    /*
    Returns stats of all swaps, reverse swaps, and chain swaps in the database.
    */
    rpc GetStats (GetStatsRequest) returns (GetStatsResponse);

    /*
    Refund a failed swap manually.
    This is only required when no refund address has been set and the swap does not have an associated wallet.
    */
    rpc RefundSwap (RefundSwapRequest) returns (GetSwapInfoResponse);

    /*
    Claim swaps manually.
    This is only required when no claim address has been set and the swap does not have an associated wallet.
    */
    rpc ClaimSwaps (ClaimSwapsRequest) returns (ClaimSwapsResponse);

    /*
    Gets all available information about a swap from the database.
    */
    rpc GetSwapInfo (GetSwapInfoRequest) returns (GetSwapInfoResponse);

    /*
    Returns the entire history of the swap if is still pending and streams updates in real time.
    If the swap id is empty or "*" updates for all swaps will be streamed.
    */
    rpc GetSwapInfoStream (GetSwapInfoRequest) returns (stream GetSwapInfoResponse);

    /*
    This is a wrapper for channel creation swaps. The daemon only returns the ID, timeout block height and lockup address.
    The Boltz backend takes care of the rest. When an amount of onchain coins that is in the limits is sent to the address
    before the timeout block height, the daemon creates a new lightning invoice, sends it to the Boltz backend which
    will try to pay it and if that is not possible, create a new channel to make the swap succeed.
    */
    rpc Deposit (DepositRequest) returns (DepositResponse) { option deprecated = true; }

    /*
    Creates a new swap from onchain to lightning.
    */
    rpc CreateSwap (CreateSwapRequest) returns (CreateSwapResponse);

    /*
    Create a new swap from onchain to a new lightning channel. The daemon will only accept the invoice payment if the HTLCs
    is coming trough a new channel channel opened by Boltz.
    */
    rpc CreateChannel (CreateChannelRequest) returns (CreateSwapResponse) { option deprecated = true; };

    /*
    Creates a new reverse swap from lightning to onchain. If `accept_zero_conf` is set to true in the request, the daemon
    will not wait until the lockup transaction from Boltz is confirmed in a block, but will claim it instantly.
    */
    rpc CreateReverseSwap (CreateReverseSwapRequest) returns (CreateReverseSwapResponse);

    /*
    Creates a new chain swap from one chain to another. If `accept_zero_conf` is set to true in the request, the daemon
    will not wait until the lockup transaction from Boltz is confirmed in a block, but will claim it instantly.
    */
    rpc CreateChainSwap (CreateChainSwapRequest) returns (ChainSwapInfo);

    /*
    Creates a new liquid wallet and returns the mnemonic.
     */
    rpc CreateWallet (CreateWalletRequest) returns (CreateWalletResponse);

    /*
    Imports an existing wallet.
     */
    rpc ImportWallet (ImportWalletRequest) returns (Wallet);

    /*
    Sets the subaccount of a wallet. Not supported for readonly wallets.
     */
    rpc SetSubaccount (SetSubaccountRequest) returns (Subaccount);

    /*
    Returns all subaccounts for a given wallet. Not supported for readonly wallets.
     */
    rpc GetSubaccounts (GetSubaccountsRequest) returns (GetSubaccountsResponse);

    /*
    Returns all available wallets.
     */
    rpc GetWallets (GetWalletsRequest) returns (Wallets);

    /*
    Returns the current balance and subaccount of a wallet.
     */
    rpc GetWallet (GetWalletRequest) returns (Wallet);

    /*
    Returns the credentials of a wallet. The password will be required if the wallet is encrypted.
     */
    rpc GetWalletCredentials (GetWalletCredentialsRequest) returns (WalletCredentials);

    /*
    Removes a wallet.
     */
    rpc RemoveWallet (RemoveWalletRequest) returns (RemoveWalletResponse);

    /*
    Gracefully stops the daemon.
     */
    rpc Stop(google.protobuf.Empty) returns (google.protobuf.Empty);

    /*
    Unlocks the server. This will be required on startup if there are any encrypted wallets.
     */
    rpc Unlock(UnlockRequest) returns (google.protobuf.Empty);

    /*
    Check if the password is correct.
     */
    rpc VerifyWalletPassword(VerifyWalletPasswordRequest) returns (VerifyWalletPasswordResponse);

    /*
    Changes the password for wallet encryption.
     */
    rpc ChangeWalletPassword(ChangeWalletPasswordRequest) returns (google.protobuf.Empty);

    /*
    Creates a new tenant which can be used to bake restricted macaroons.
     */
    rpc CreateTenant(CreateTenantRequest) returns (Tenant);

    /*
    Returns all tenants.
     */
    rpc ListTenants(ListTenantsRequest) returns (ListTenantsResponse);

    /*
    Get a specifiy tenant.
     */
    rpc GetTenant(GetTenantRequest) returns (Tenant);

    /*
    Bakes a new macaroon with the specified permissions.
    The macaroon can also be restricted to a specific tenant. In this case,
    - any swap or wallet created with the returned macaroon will belong to this tenant and can not be accessed by other tenants.
    - the lightning node connected to the daemon can not be used to pay or create invoices for swaps.
     */
    rpc BakeMacaroon(BakeMacaroonRequest) returns (BakeMacaroonResponse);
}

message CreateTenantRequest {
    string name = 1;
}

message ListTenantsRequest {}
message ListTenantsResponse {
    repeated Tenant tenants = 1;
}

message GetTenantRequest {
    string name = 1;
}

message Tenant {
    uint64 id = 1;
    string name = 2;
}

enum MacaroonAction {
    READ = 0;
    WRITE = 1;
}

message MacaroonPermissions {
    MacaroonAction action = 2;
}

message BakeMacaroonRequest {
    optional uint64 tenant_id = 1;
    repeated MacaroonPermissions permissions = 2;
}
message BakeMacaroonResponse {
    string macaroon = 1;
}

enum SwapState {
    PENDING = 0;
    SUCCESSFUL= 1;

    // Unknown client error. Check the error field of the message for more information
    ERROR = 2;

    // Unknown server error. Check the status field of the message for more information
    SERVER_ERROR = 3;

    // Client refunded locked coins after the HTLC timed out
    REFUNDED = 4;

    // Client noticed that the HTLC timed out but didn't find any outputs to refund
    ABANDONED = 5;
}

enum Currency {
    BTC = 0;
    LBTC = 1;
}

message Pair {
    Currency from = 1;
    Currency to = 2;
}

message SwapInfo {
    string id = 1;
    Pair pair = 22;

    SwapState state = 2;
    string error = 3;

    // Latest status message of the Boltz backend
    string status = 4;
    string private_key = 5;
    string preimage = 6;
    string redeem_script = 7;
    string invoice = 8;
    string lockup_address = 9;
    uint64 expected_amount = 10;
    uint32 timeout_block_height = 11;
    string lockup_transaction_id = 12;
    /*
    If the swap times out or fails for some other reason, the damon will automatically refund the coins sent to the
    `lockup_address` back to the configured wallet or the address specified in the `refund_address` field.
    */
    string refund_transaction_id = 13;
    optional string refund_address = 19;

    repeated ChannelId chan_ids = 14;
    optional string blinding_key = 15;
    int64 created_at = 16;
    optional uint64 service_fee = 17;
    optional uint64 onchain_fee = 18;
    // internal wallet which was used to pay the swap
    optional uint64 wallet_id = 20;
    uint64 tenant_id = 21;
}

enum SwapType {
    SUBMARINE = 0;
    REVERSE = 1;
    CHAIN = 2;
}

message GetPairInfoRequest {
    SwapType type = 1;
    Pair pair = 2;
}

message PairInfo {
    Pair pair = 1;
    SwapFees fees = 2;
    Limits limits = 3;
    string hash = 4;
}

/*
Channel creations are an optional extension to a submarine swap in the data types of boltz-client.
*/
message ChannelCreationInfo {
    option deprecated = true;
    // ID of the swap to which this channel channel belongs
    string swap_id = 1;
    string status = 2;
    uint32 inbound_liquidity = 3;
    bool private = 4;
    string funding_transaction_id = 5;
    uint32 funding_transaction_vout = 6;
}
message CombinedChannelSwapInfo {
    option deprecated = true;
    SwapInfo swap = 1;
    ChannelCreationInfo channel_creation = 2;
}

message ReverseSwapInfo {
    string id = 1;

    SwapState state = 2;
    string error = 3;

    // Latest status message of the Boltz backend
    string status = 4;
    string private_key = 5;
    string preimage = 6;
    string redeem_script = 7;
    string invoice = 8;
    string claim_address = 9;
    int64 onchain_amount = 10;
    uint32 timeout_block_height = 11;
    string lockup_transaction_id = 12;
    string claim_transaction_id = 13;
    Pair pair = 14;
    repeated ChannelId chan_ids = 15;
    optional string blinding_key = 16;
    int64 created_at = 17;
    optional int64 paid_at = 23; // the time when the invoice was paid
    optional uint64 service_fee = 18;
    optional uint64 onchain_fee = 19;
    optional uint64 routing_fee_msat = 20;
    bool external_pay = 21;
    uint64 tenant_id = 22;
}

message BlockHeights {
    uint32 btc = 1;
    optional uint32 liquid = 2;
}

message GetInfoRequest {}
message GetInfoResponse {
    string version = 9;
    string node = 10;
    string network = 2;
    string node_pubkey = 7;
    // one of: running, disabled, error
    string auto_swap_status = 11;
    // mapping of the currency to the latest block height.
    BlockHeights block_heights = 8;
    // swaps that need a manual interaction to refund
    repeated string refundable_swaps = 12;
    // the currently authenticated tenant
    optional Tenant tenant = 13;
    // swaps that need a manual interaction to claim
    repeated string claimable_swaps = 14;

    string symbol = 1 [deprecated = true];
    string lnd_pubkey = 3 [deprecated = true];
    uint32 block_height = 4 [deprecated = true];
    repeated string pending_swaps = 5 [deprecated = true];
    repeated string pending_reverse_swaps = 6 [deprecated = true];
}

message Limits {
    uint64 minimal = 1;
    uint64 maximal = 2;
    uint64 maximal_zero_conf_amount = 3;
}

message SwapFees {
    double percentage = 1;
    uint64 miner_fees = 2;
}

message GetPairsResponse {
    repeated PairInfo submarine = 1;
    repeated PairInfo reverse = 2;
    repeated PairInfo chain = 3;
}

message MinerFees {
    uint32 normal = 1;
    uint32 reverse = 2;
}
message Fees {
    float percentage = 1;
    MinerFees miner = 2;
}

message GetServiceInfoRequest {}

message GetServiceInfoResponse {
    Fees fees = 1;
    Limits limits = 2;
}

enum IncludeSwaps {
    ALL = 0;
    MANUAL = 1;
    AUTO = 2;
}

message ListSwapsRequest {
    optional Currency from = 1;
    optional Currency to = 2;
    optional SwapState state = 4;
    IncludeSwaps include = 5;
}
message ListSwapsResponse {
    repeated SwapInfo swaps = 1;
    repeated CombinedChannelSwapInfo channel_creations = 2;
    repeated ReverseSwapInfo reverse_swaps = 3;
    repeated ChainSwapInfo chain_swaps = 4;
}

message GetStatsRequest {
    IncludeSwaps include = 1;
}

message GetStatsResponse {
    SwapStats stats = 1;
}

message RefundSwapRequest {
    string id = 1;
    oneof destination {
        string address = 2;
        uint64 wallet_id = 3;
    }
}

message ClaimSwapsRequest {
    repeated string swap_ids = 1;
    oneof destination {
        string address = 2;
        uint64 wallet_id = 3;
    }
}

message ClaimSwapsResponse {
    string transaction_id = 1;
}

message GetSwapInfoRequest {
    string id = 1;
}
message GetSwapInfoResponse {
    SwapInfo swap = 1;
    ChannelCreationInfo channel_creation = 2;
    ReverseSwapInfo reverse_swap = 3;
    ChainSwapInfo chain_swap = 4;
}

message DepositRequest {
    /*
    Percentage of inbound liquidity the channel that is opened in case the invoice cannot be paid should have.
    25 by default.
    */
    uint32 inbound_liquidity = 1;
}
message DepositResponse {
    string id = 1;
    string address = 2;
    uint32 timeout_block_height = 3;
}

message CreateSwapRequest {
    uint64 amount = 1;
    Pair pair = 2;
    // not yet supported
    // repeated string chan_ids = 3;

    // the daemon will pay the swap using the onchain wallet specified in the `wallet` field or any wallet otherwise.
    bool send_from_internal = 4;
    // address where the coins should go if the swap fails. Refunds will go to any of the daemons wallets otherwise.
    optional string refund_address = 5;
    // wallet to pay swap from. only used if `send_from_internal` is set to true
    optional uint64 wallet_id = 6;
    // invoice to use for the swap. if not set, the daemon will get a new invoice from the lightning node
    optional string invoice = 7;
    // Boltz does not accept 0-conf for Liquid transactions with a fee of 0.01 sat/vByte;
    // when `zero_conf` is enabled, a fee of 0.1 sat/vByte will be used for Liquid lockup transactions
    optional bool zero_conf = 8;
}
message CreateSwapResponse {
    string id = 1;
    string address = 2;
    uint64 expected_amount = 3;
    string bip21 = 4;
    // lockup transaction id. Only populated when `send_from_internal` was specified in the request
    string tx_id = 5;
    uint32 timeout_block_height = 6;
    float timeout_hours = 7;
}

message CreateChannelRequest {
    int64 amount = 1;

    /*
    Percentage of inbound liquidity the channel that is opened should have.
    25 by default.
    */
    uint32 inbound_liquidity = 2;
    bool private = 3;
};

message CreateReverseSwapRequest {
    // amount of satoshis to swap
    uint64 amount = 1;
    // If no value is set, the daemon will query a new address from the lightning node
    string address = 2;
    // Whether the daemon should broadcast the claim transaction immediately after the lockup transaction is in the mempool.
    // Should only be used for smaller amounts as it involves trust in boltz.
    bool accept_zero_conf = 3;
    Pair pair = 4;
    // a list of channel ids which are allowed for paying the invoice. can be in either cln or lnd style.
    repeated string chan_ids = 5;
    // wallet from which the onchain address should be generated - only considered if `address` is not set
    optional uint64 wallet_id = 6;
    // Whether the daemon should return immediately after creating the swap or wait until the swap is successful or failed.
    // It will always return immediately if `accept_zero_conf` is not set.
    optional bool return_immediately = 7;
    // If set, the daemon will not pay the invoice of the swap and return the invoice to be paid. This implicitly sets `return_immediately` to true.
    optional bool external_pay = 8;
    // Description of the invoice which will be created for the swap
    optional string description = 9;
}
message CreateReverseSwapResponse {
    string id = 1;
    string lockup_address = 2;

    // Only populated when zero-conf is accepted and return_immediately is set to false
    optional uint64 routing_fee_milli_sat = 3;
    // Only populated when zero-conf is accepted and return_immediately is set to false
    optional string claim_transaction_id = 4;
    // Invoice to be paid. Only populated when `external_pay` is set to true
    optional string invoice = 5;
}

message CreateChainSwapRequest {
    // Amount of satoshis to swap. It is the amount expected to be sent to the lockup address.
    uint64 amount = 1;
    Pair pair = 2;
    // Address where funds will be swept to if the swap succeeds
    optional string to_address = 3;
    // Address where the coins should be refunded to if the swap fails.
    optional string refund_address = 4;
    // Wallet from which the swap should be paid from. Ignored if `external_pay` is set to true.
    // If the swap fails, funds will be refunded to this wallet as well.
    optional uint64 from_wallet_id = 5;
    // Wallet where the the funds will go if the swap succeeds.
    optional uint64 to_wallet_id = 6;
    // Whether the daemon should broadcast the claim transaction immediately after the lockup transaction is in the mempool.
    // Should only be used for smaller amounts as it involves trust in Boltz.
    optional bool accept_zero_conf = 7;
    // If set, the daemon will not pay the swap from an internal wallet.
    optional bool external_pay = 8;
    // Boltz does not accept 0-conf for Liquid transactions with a fee of 0.01 sat/vByte;
    // when `lockup_zero_conf` is enabled, a fee of 0.1 sat/vByte will be used for Liquid lockup transactions
    optional bool lockup_zero_conf = 9;
}

message ChainSwapInfo {
    string id = 1;
    Pair pair = 2;
    SwapState state = 3;
    string error = 4;
    string status = 5;
    string preimage = 6;
    bool is_auto = 8;
    optional uint64 service_fee = 9;
    double service_fee_percent = 10;
    optional uint64 onchain_fee = 11;
    int64 created_at = 12;
    uint64 tenant_id = 13;
    ChainSwapData from_data = 14;
    ChainSwapData to_data = 15;
}

message ChainSwapData {
    string id = 1;
    Currency currency = 2;
    string private_key = 3;
    string their_public_key = 4;
    uint64 amount = 6;
    uint32 timeout_block_height = 7;
    optional string lockup_transaction_id = 8;
    optional string transaction_id = 9;
    optional uint64 wallet_id = 20;
    optional string address = 12;
    optional string blinding_key = 13;
    string lockup_address = 14;
}

message ChannelId {
    // cln style: 832347x2473x1
    string cln = 1;
    // lnd style: 915175205006540801
    uint64 lnd = 2;
}

message LightningChannel {
    ChannelId id = 1;
    uint64 capacity = 2;
    uint64 outbound_sat = 3;
    uint64 inbound_sat = 4;
    string peer_id = 5;
}

message SwapStats {
    uint64 total_fees = 1;
    uint64 total_amount = 2;
    uint64 avg_fees = 3;
    uint64 avg_amount = 4;
    uint64 count = 5;
    uint64 success_count = 6;
}

message Budget {
    uint64 total = 1;
    int64 remaining = 2;
    int64 start_date = 3;
    int64 end_date = 4;
}

message WalletCredentials {
    // only one of these is allowed to be present
    optional string mnemonic = 1;
    optional string xpub = 2;
    optional string core_descriptor = 3;

    // only used in combination with mnemonic
    optional uint64 subaccount = 4;
}

message WalletParams {
    string name = 1;
    Currency currency = 2;
    // the password to encrypt the wallet with. If there are existing encrypted wallets, the same password has to be used.
    optional string password = 3;
}

message ImportWalletRequest {
    WalletCredentials credentials = 1;
    WalletParams params = 2;
}

message CreateWalletRequest {
    WalletParams params = 2;
}

message CreateWalletResponse {
    string mnemonic = 1;
    Wallet wallet = 2;
}

message SetSubaccountRequest {
    uint64 wallet_id = 1;
    // The subaccount to use. If not set, a new one will be created.
    optional uint64 subaccount = 2;
}

message GetSubaccountsRequest {
    uint64 wallet_id = 1;
}

message GetSubaccountsResponse {
    optional uint64 current = 1;
    repeated Subaccount subaccounts = 2;
}

message ImportWalletResponse {}

message GetWalletsRequest {
    optional Currency currency = 1;
    optional bool include_readonly = 2;
}

message GetWalletRequest {
    optional string name = 1;
    optional uint64 id = 2;
}

message GetWalletCredentialsRequest {
    uint64 id = 1;
    optional string password = 2;
}

message RemoveWalletRequest {
    uint64 id = 1;
}


message Wallet {
    uint64 id = 1;
    string name = 2;
    Currency currency = 3;
    bool readonly = 4;
    Balance balance = 5;
    uint64 tenant_id = 6;
}

message Wallets {
    repeated Wallet wallets = 1;
}

message Balance {
    uint64 total = 1;
    uint64 confirmed = 2;
    uint64 unconfirmed = 3;
}

message Subaccount {
    Balance balance = 1;
    uint64 pointer = 2;
    string type = 3;
}

message RemoveWalletResponse {}

message UnlockRequest {
    string password = 1;
}

message VerifyWalletPasswordRequest {
    string password = 1;
}

message VerifyWalletPasswordResponse {
    bool correct = 1;
}

message ChangeWalletPasswordRequest {
    string old = 1;
    string new = 2;
}