client/dcr: Add rpc staking.

client/asset/dcr/rpcwallet.go

@@ -912,26 +912,36 @@ func (w *rpcWallet) Tickets(ctx context.Context) ([]*asset.Ticket, error) {
 			w.log.Errorf("GetTransaction error for ticket %s: %v", h, err)
 			continue
 		}
+		blkHash, err := chainhash.NewHashFromStr(tx.BlockHash)
+		if err != nil {
+			w.log.Errorf("Invalid block hash %v for ticket %v: %w", tx.BlockHash, h, err)
+			continue
+		}
+		// dcrwallet returns do not include the block height.
+		hdr, err := w.client().GetBlockHeader(ctx, blkHash)
+		if err != nil {
+			w.log.Errorf("GetBlockHeader error for ticket %s: %v", h, err)
+			continue
+		}
 		msgTx, err := msgTxFromHex(tx.Hex)
 		if err != nil {
 			w.log.Errorf("Error decoding ticket %s tx hex: %v", h, err)
 			continue
 		}
-
 		if len(msgTx.TxOut) < 1 {
 			w.log.Errorf("No outputs for ticket %s", h)
 			continue
 		}
-
-		feeAmt, _ := dcrutil.NewAmount(tx.Fee)
+		// Fee is always negative.
+		feeAmt, _ := dcrutil.NewAmount(-tx.Fee)
 
 		tickets = append(tickets, &asset.Ticket{
 			Ticket: asset.TicketTransaction{
 				Hash:        h.String(),
 				TicketPrice: uint64(msgTx.TxOut[0].Value),
 				Fees:        uint64(feeAmt),
 				Stamp:       uint64(tx.Time),
-				BlockHeight: tx.BlockIndex,
+				BlockHeight: int64(hdr.Height),
 			},
 			// The walletjson.GetTransactionResult returned from GetTransaction
 			// actually has a TicketStatus string field, but it doesn't appear

client/cmd/dexcctl/main.go

@@ -60,6 +60,7 @@ var promptPasswords = map[string][]string{
 	"appseed":           {"App password:"},
 	"startmarketmaking": {"App password:"},
 	"multitrade":        {"App password:"},
+	"purchasetickets":   {"App password:"},
 }
 
 // optionalTextFiles is a map of routes to arg index for routes that should read

client/core/core.go

@@ -10498,3 +10498,75 @@ func (c *Core) SendShielded(appPW []byte, assetID uint32, toAddr string, amt uin
 
 	return coinID, nil
 }
+
+// dcrStakingWallet fetches the decred wallet and returns its asset.TicketBuyer
+// interface. Errors if no decred wallet is currently loaded. Used for decred
+// ticket purchasing.
+func (c *Core) dcrStakingWallet() (*xcWallet, asset.TicketBuyer, error) {
+	dcrAssetID := uint32(42)
+	wallet, exists := c.wallet(dcrAssetID)
+	if !exists {
+		return nil, nil, newError(missingWalletErr, "no configured wallet found for dcr")
+	}
+	ticketBuyer, is := wallet.Wallet.(asset.TicketBuyer)
+	if !is {
+		return nil, nil, fmt.Errorf("dcr wallet is not a TicketBuyer")
+	}
+	return wallet, ticketBuyer, nil
+}
+
+// StakeStatus returns current staking statuses such as currently owned
+// tickets, ticket price, and current voting preferences. Used for
+// decred ticket purchasing.
+func (c *Core) StakeStatus() (*asset.TicketStakingStatus, error) {
+	_, tb, err := c.dcrStakingWallet()
+	if err != nil {
+		return nil, err
+	}
+	return tb.StakeStatus()
+}
+
+// SetVSP sets the VSP provider. Used for decred ticket purchasing.
+func (c *Core) SetVSP(addr string) error {
+	_, tb, err := c.dcrStakingWallet()
+	if err != nil {
+		return err
+	}
+	return tb.SetVSP(addr)
+}
+
+// PurchaseTickets purchases n amout of tickets. Returns the purchased
+// ticket hashes if successful.Used for decred ticket purchasing.
+func (c *Core) PurchaseTickets(pw []byte, n int) ([]string, error) {
+	wallet, tb, err := c.dcrStakingWallet()
+	if err != nil {
+		return nil, err
+	}
+	crypter, err := c.encryptionKey(pw)
+	if err != nil {
+		return nil, fmt.Errorf("password error: %w", err)
+	}
+	defer crypter.Close()
+	err = c.connectAndUnlock(crypter, wallet)
+	if err != nil {
+		return nil, err
+	}
+
+	// TODO: Send tickets bought notification.
+	//subject, details := c.formatDetails(TopicSendSuccess, sentValue, unbip(assetID), address, coin)
+	//c.notify(newSendNote(TopicSendSuccess, subject, details, db.Success))
+
+	dcrAssetID := uint32(42)
+	c.updateAssetBalance(dcrAssetID)
+	return tb.PurchaseTickets(n)
+}
+
+// SetVotingPreferences sets default voting settings for all active
+// tickets and future tickets. Nil maps can be provided for no change.
+func (c *Core) SetVotingPreferences(choices, tSpendPolicy, treasuryPolicy map[string]string) error {
+	_, tb, err := c.dcrStakingWallet()
+	if err != nil {
+		return err
+	}
+	return tb.SetVotingPreferences(choices, tSpendPolicy, treasuryPolicy)
+}

client/rpcserver/handlers.go

@@ -55,6 +55,10 @@ const (
 	startMarketMakingRoute     = "startmarketmaking"
 	stopMarketMakingRoute      = "stopmarketmaking"
 	multiTradeRoute            = "multitrade"
+	stakeStatusRoute           = "stakestatus"
+	setVSPRoute                = "setvsp"
+	purchaseTicketsRoute       = "purchasetickets"
+	setVotingPreferencesRoute  = "setvotingprefs"
 )
 
 const (
@@ -65,6 +69,8 @@ const (
 	canceledOrderStr  = "canceled order %s"
 	logoutStr         = "goodbye"
 	walletStatusStr   = "%s wallet has been %s"
+	setVotePrefsStr   = "vote preferences set"
+	setVSPStr         = "vsp set to %s"
 )
 
 // createResponse creates a msgjson response payload.
@@ -116,10 +122,14 @@ var routes = map[string]func(s *RPCServer, params *RawParams) *msgjson.ResponseP
 	walletPeersRoute:           handleWalletPeers,
 	addWalletPeerRoute:         handleAddWalletPeer,
 	removeWalletPeerRoute:      handleRemoveWalletPeer,
-	notificationsRoute:         handleNotificationsRoute,
-	startMarketMakingRoute:     handleStartMarketMakingRoute,
-	stopMarketMakingRoute:      handleStopMarketMakingRoute,
+	notificationsRoute:         handleNotifications,
+	startMarketMakingRoute:     handleStartMarketMaking,
+	stopMarketMakingRoute:      handleStopMarketMaking,
 	multiTradeRoute:            handleMultiTrade,
+	stakeStatusRoute:           handleStakeStatus,
+	setVSPRoute:                handleSetVSP,
+	purchaseTicketsRoute:       handlePurchaseTickets,
+	setVotingPreferencesRoute:  handleSetVotingPreferences,
 }
 
 // handleHelp handles requests for help. Returns general help for all commands
@@ -888,15 +898,15 @@ func handleRemoveWalletPeer(s *RPCServer, params *RawParams) *msgjson.ResponsePa
 	return createResponse(removeWalletPeerRoute, "successfully removed peer", nil)
 }
 
-func handleNotificationsRoute(s *RPCServer, params *RawParams) *msgjson.ResponsePayload {
+func handleNotifications(s *RPCServer, params *RawParams) *msgjson.ResponsePayload {
 	numNotes, err := parseNotificationsArgs(params)
 	if err != nil {
 		return usage(notificationsRoute, err)
 	}
 
 	notes, err := s.core.Notifications(numNotes)
 	if err != nil {
-		errMsg := fmt.Sprintf("unable to remove wallet peer: %v", err)
+		errMsg := fmt.Sprintf("unable to handle notification: %v", err)
 		resErr := msgjson.NewError(msgjson.RPCNotificationsError, errMsg)
 		return createResponse(notificationsRoute, nil, resErr)
 	}
@@ -921,7 +931,7 @@ func parseMarketMakingConfig(path string) ([]*mm.BotConfig, error) {
 	return configs, nil
 }
 
-func handleStartMarketMakingRoute(s *RPCServer, params *RawParams) *msgjson.ResponsePayload {
+func handleStartMarketMaking(s *RPCServer, params *RawParams) *msgjson.ResponsePayload {
 	form, err := parseStartMarketMakingArgs(params)
 	if err != nil {
 		return usage(startMarketMakingRoute, err)
@@ -944,7 +954,7 @@ func handleStartMarketMakingRoute(s *RPCServer, params *RawParams) *msgjson.Resp
 	return createResponse(startMarketMakingRoute, "started market making", nil)
 }
 
-func handleStopMarketMakingRoute(s *RPCServer, params *RawParams) *msgjson.ResponsePayload {
+func handleStopMarketMaking(s *RPCServer, params *RawParams) *msgjson.ResponsePayload {
 	if !s.mm.Running() {
 		errMsg := "market making is not running"
 		resErr := msgjson.NewError(msgjson.RPCStopMarketMakingError, errMsg)
@@ -954,6 +964,66 @@ func handleStopMarketMakingRoute(s *RPCServer, params *RawParams) *msgjson.Respo
 	return createResponse(stopMarketMakingRoute, "stopped market making", nil)
 }
 
+func handleSetVSP(s *RPCServer, params *RawParams) *msgjson.ResponsePayload {
+	addr, err := parseSetVSPArgs(params)
+	if err != nil {
+		return usage(setVSPRoute, err)
+	}
+
+	err = s.core.SetVSP(addr)
+	if err != nil {
+		errMsg := fmt.Sprintf("unable to set vsp: %v", err)
+		resErr := msgjson.NewError(msgjson.RPCSetVSPError, errMsg)
+		return createResponse(setVSPRoute, nil, resErr)
+	}
+
+	return createResponse(setVSPRoute, fmt.Sprintf(setVSPStr, addr), nil)
+}
+
+func handlePurchaseTickets(s *RPCServer, params *RawParams) *msgjson.ResponsePayload {
+	form, err := parsePurchaseTicketsArgs(params)
+	if err != nil {
+		return usage(purchaseTicketsRoute, err)
+	}
+	defer form.appPass.Clear()
+
+	hashes, err := s.core.PurchaseTickets(form.appPass, form.num)
+	if err != nil {
+		errMsg := fmt.Sprintf("unable to purchase tickets: %v", err)
+		resErr := msgjson.NewError(msgjson.RPCPurchaseTicketsError, errMsg)
+		return createResponse(purchaseTicketsRoute, nil, resErr)
+	}
+
+	return createResponse(purchaseTicketsRoute, hashes, nil)
+}
+
+func handleStakeStatus(s *RPCServer, _ *RawParams) *msgjson.ResponsePayload {
+	stakeStatus, err := s.core.StakeStatus()
+	if err != nil {
+		errMsg := fmt.Sprintf("unable to get staking status: %v", err)
+		resErr := msgjson.NewError(msgjson.RPCStakeStatusError, errMsg)
+		return createResponse(stakeStatusRoute, nil, resErr)
+	}
+
+	return createResponse(stakeStatusRoute, &stakeStatus, nil)
+}
+
+func handleSetVotingPreferences(s *RPCServer, params *RawParams) *msgjson.ResponsePayload {
+	form, err := parseSetVotingPreferencesArgs(params)
+	if err != nil {
+		return usage(setVotingPreferencesRoute, err)
+	}
+
+	err = s.core.SetVotingPreferences(form.voteChoices, form.tSpendPolicy, form.treasuryPolicy)
+	if err != nil {
+		errMsg := fmt.Sprintf("unable to set voting preferences: %v", err)
+		resErr := msgjson.NewError(msgjson.RPCSetVotingPreferencesError, errMsg)
+		return createResponse(setVotingPreferencesRoute, nil, resErr)
+	}
+
+	return createResponse(setVotingPreferencesRoute, "vote preferences set", nil)
+}
+
 // format concatenates thing and tail. If thing is empty, returns an empty
 // string.
 func format(thing, tail string) string {
@@ -1385,7 +1455,7 @@ Registration is complete after the fee transaction has been confirmed.`,
 		cmdSummary: `Initiate a rescan of an asset's wallet. This is only supported for certain
 wallet types. Wallet resynchronization may be asynchronous, and the wallet
 state should be consulted for progress.
-	
+
 WARNING: It is ill-advised to initiate a wallet rescan with active orders
 unless as a last ditch effort to get the wallet to recognize a transaction
 needed to complete a swap.`,
@@ -1584,4 +1654,88 @@ needed to complete a swap.`,
 	stopMarketMakingRoute: {
 		cmdSummary: `Stop market making.`,
 	},
+	stakeStatusRoute: {
+		cmdSummary: `Get stake status. `,
+		returns: `Returns:
+  obj: The staking status.
+    {
+      ticketprice (uint64): The current ticket price in atoms.
+      vsp (string): The url of the currently set vsp (voting service provider).
+      isrpc (bool): Whether the wallet is an RPC wallet. False indicates
+an spv wallet and allows options that can view and set the vsp.
+      tickets (array): An array of ticket objects.
+      [
+        {
+          ticket (obj): Ticket transaction data.
+          {
+            hash (string): The ticket hash as hex.
+            ticketPrice (int): The amount paid for the ticket in atoms.
+            fees (int): The ticket transaction's tx fee.
+            stamp (int): The UNIX time the ticket was purchased.
+            blockheight (int): The block number the ticket was mined.
+          },
+          status: (int) The ticket status. 0 is TicketStatusUnknown. 1 is TicketStatusUnmined.
+2 is TicketStatusImmature. 3 is TicketStatusLive. 4 is TicketStatusVoted.
+5 is TicketStatusMissed. 6 is TicketStatusExpired. 7 is TicketStatusUnspent.
+8 is TicketStatusRevoked.
+          spender (string): The transaction that votes on or revokes the ticket if available.
+       },
+     ],...
+     stances (obj): Voting policies.
+     {
+       votechoices (array): An array of consensus vote choices.
+       [
+         {
+           agendaid (string): The agenda ID,
+           agendadescription (string): A description of the agenda being voted on.
+           choiceid (string): The current choice.
+           choicedescription (string): A description of the chosen choice.
+         },
+       ],...
+       tspendpolicy (array): An array of TSpend policies.
+       [
+         {
+           hash (string): The TSpend txid.,
+           policy (string): The policy.
+         },
+       ],...
+       treasurypolicy (array): An array of treasury policies.
+       [
+         {
+           key (string): The pubkey of the tspend creator.
+           policy (string): The policy.
+         },
+       ],...
+     }
+  }`,
+	},
+	setVSPRoute: {
+		argsShort:  `"addr"`,
+		cmdSummary: `Set a vsp by url.`,
+		argsLong: `Args:
+  addr (string): The vsp's url.`,
+		returns: `Returns:
+  string: The message "` + fmt.Sprintf(setVSPStr, "[vsp url]") + `"`,
+	},
+	purchaseTicketsRoute: {
+		pwArgsShort: `"appPass"`,
+		argsShort:   `num`,
+		cmdSummary:  `Purchase some tickets.`,
+		pwArgsLong: `Password Args:
+  appPass (string): The DEX client password.`,
+		argsLong: `Args:
+  num (int): The number of tickets to purchase`,
+		returns: `Returns:
+  array: An array of ticket hashes.`,
+	},
+	setVotingPreferencesRoute: {
+		argsShort:  `(choicesMap) (tSpendPolicyMap) (treasuryPolicyMap)`,
+		cmdSummary: `Cancel an order.`,
+		argsLong: `Args:
+  choicesMap (map[string]string): A map of choices IDs to choice policies.
+  tSpendPolicyMap (map[string]string): A map of tSpend txids to tSpend policies.
+  treasuryPolicyMap (map[string]string): A map of treasury spender public keys to tSpend policies.`,
+		returns: `Returns:
+  string: The message "` + setVotePrefsStr + `"`,
+	},
 }