handlers/application/balance_test.go

@@ -52,7 +52,7 @@ func TestCheckBalance(t *testing.T) {
 			alias:          "user72",
 			activeSym:      "SRF",
 			activeBal:      "10.967",
-			expectedResult: resource.Result{Content: "user72 balance: 10.96 SRF\n"},
+			expectedResult: resource.Result{Content: "user72\nBalance: 10.96 SRF\n"},
 			expectError:    false,
 		},
 	}

handlers/application/poolswap.go

@@ -220,7 +220,7 @@ func (h *MenuHandlers) SwapMaxLimit(ctx context.Context, sym string, input []byt
 	}
 
 	// Format to 2 decimal places
-	maxStr := fmt.Sprintf("%.2f", maxAmountFloat)
+	maxStr, _ := store.TruncateDecimalString(string(maxAmountStr), 2)
 
 	if maxAmountFloat < 0.1 {
 		// return with low amount flag
@@ -319,14 +319,9 @@ func (h *MenuHandlers) SwapPreview(ctx context.Context, sym string, input []byte
 
 	// Scale down the quoted amount
 	quoteAmountStr := store.ScaleDownBalance(r.OutValue, swapData.ActiveSwapToDecimal)
-	qouteAmount, err := strconv.ParseFloat(quoteAmountStr, 64)
-	if err != nil {
-		logg.ErrorCtxf(ctx, "failed to parse quoteAmountStr as float", "value", quoteAmountStr, "error", err)
-		return res, err
-	}
 
 	// Format to 2 decimal places
-	qouteStr := fmt.Sprintf("%.2f", qouteAmount)
+	qouteStr, _ := store.TruncateDecimalString(string(quoteAmountStr), 2)
 
 	res.Content = fmt.Sprintf(
 		"You will swap:\n%s %s for %s %s:",

handlers/application/send.go

@@ -9,135 +9,239 @@ import (
 
 	"git.defalsify.org/vise.git/db"
 	"git.defalsify.org/vise.git/resource"
+	"git.grassecon.net/grassrootseconomics/common/hex"
 	"git.grassecon.net/grassrootseconomics/common/identity"
 	"git.grassecon.net/grassrootseconomics/common/phone"
-	"git.grassecon.net/grassrootseconomics/sarafu-api/models"
 	"git.grassecon.net/grassrootseconomics/sarafu-api/remote/http"
 	"git.grassecon.net/grassrootseconomics/sarafu-vise/config"
 	"git.grassecon.net/grassrootseconomics/sarafu-vise/store"
 	storedb "git.grassecon.net/grassrootseconomics/sarafu-vise/store/db"
 	"github.com/grassrootseconomics/ethutils"
+	dataserviceapi "github.com/grassrootseconomics/ussd-data-service/pkg/api"
 	"gopkg.in/leonelquinteros/gotext.v1"
 )
 
 // ValidateRecipient validates that the given input is valid.
-//
-// TODO: split up functino
 func (h *MenuHandlers) ValidateRecipient(ctx context.Context, sym string, input []byte) (resource.Result, error) {
 	var res resource.Result
-	var AliasAddressResult string
-	var AliasAddress *models.AliasAddress
 	store := h.userdataStore
+	flag_invalid_recipient, _ := h.flagManager.GetFlag("flag_invalid_recipient")
 
 	sessionId, ok := ctx.Value("SessionId").(string)
 	if !ok {
 		return res, fmt.Errorf("missing session")
 	}
-	flag_invalid_recipient, _ := h.flagManager.GetFlag("flag_invalid_recipient")
-	flag_invalid_recipient_with_invite, _ := h.flagManager.GetFlag("flag_invalid_recipient_with_invite")
-	flag_api_error, _ := h.flagManager.GetFlag("flag_api_call_error")
 
 	// remove white spaces
 	recipient := strings.ReplaceAll(string(input), " ", "")
+	if recipient == "0" {
+		return res, nil
+	}
 
-	if recipient != "0" {
-		recipientType, err := identity.CheckRecipient(recipient)
-		if err != nil {
-			// Invalid recipient format (not a phone number, address, or valid alias format)
-			res.FlagSet = append(res.FlagSet, flag_invalid_recipient)
+	recipientType, err := identity.CheckRecipient(recipient)
+	if err != nil {
+		// Invalid recipient format (not a phone number, address, or valid alias format)
+		res.FlagSet = append(res.FlagSet, flag_invalid_recipient)
+		res.Content = recipient
+
+		return res, nil
+	}
+
+	// save the recipient as the temporaryRecipient
+	err = store.WriteEntry(ctx, sessionId, storedb.DATA_TEMPORARY_VALUE, []byte(recipient))
+	if err != nil {
+		logg.ErrorCtxf(ctx, "failed to write temporaryRecipient entry with", "key", storedb.DATA_TEMPORARY_VALUE, "value", recipient, "error", err)
+		return res, err
+	}
+
+	switch recipientType {
+	case "phone number":
+		return h.handlePhoneNumber(ctx, sessionId, recipient, &res)
+	case "address":
+		return h.handleAddress(ctx, sessionId, recipient, &res)
+	case "alias":
+		return h.handleAlias(ctx, sessionId, recipient, &res)
+	}
+
+	return res, nil
+}
+
+func (h *MenuHandlers) handlePhoneNumber(ctx context.Context, sessionId, recipient string, res *resource.Result) (resource.Result, error) {
+	store := h.userdataStore
+	flag_invalid_recipient_with_invite, _ := h.flagManager.GetFlag("flag_invalid_recipient_with_invite")
+
+	formattedNumber, err := phone.FormatPhoneNumber(recipient)
+	if err != nil {
+		logg.ErrorCtxf(ctx, "Failed to format phone number", "recipient", recipient, "error", err)
+		return *res, err
+	}
+
+	publicKey, err := store.ReadEntry(ctx, formattedNumber, storedb.DATA_PUBLIC_KEY)
+	if err != nil {
+		if db.IsNotFound(err) {
+			logg.InfoCtxf(ctx, "Unregistered phone number", "recipient", recipient)
+			res.FlagSet = append(res.FlagSet, flag_invalid_recipient_with_invite)
 			res.Content = recipient
-
-			return res, nil
+			return *res, nil
 		}
+		logg.ErrorCtxf(ctx, "Failed to read publicKey", "error", err)
+		return *res, err
+	}
 
-		// save the recipient as the temporaryRecipient
-		err = store.WriteEntry(ctx, sessionId, storedb.DATA_TEMPORARY_VALUE, []byte(recipient))
-		if err != nil {
-			logg.ErrorCtxf(ctx, "failed to write temporaryRecipient entry with", "key", storedb.DATA_TEMPORARY_VALUE, "value", recipient, "error", err)
-			return res, err
+	if err := store.WriteEntry(ctx, sessionId, storedb.DATA_RECIPIENT, publicKey); err != nil {
+		logg.ErrorCtxf(ctx, "Failed to write recipient", "value", string(publicKey), "error", err)
+		return *res, err
+	}
+
+	// Delegate to shared logic
+	if err := h.determineAndSaveTransactionType(ctx, sessionId, publicKey, []byte(formattedNumber)); err != nil {
+		return *res, err
+	}
+
+	return *res, nil
+}
+
+func (h *MenuHandlers) handleAddress(ctx context.Context, sessionId, recipient string, res *resource.Result) (resource.Result, error) {
+	store := h.userdataStore
+	address := ethutils.ChecksumAddress(recipient)
+
+	if err := store.WriteEntry(ctx, sessionId, storedb.DATA_RECIPIENT, []byte(address)); err != nil {
+		logg.ErrorCtxf(ctx, "Failed to write recipient address", "error", err)
+		return *res, err
+	}
+
+	// normalize the address to fetch the recipient's phone number
+	publicKeyNormalized, err := hex.NormalizeHex(address)
+	if err != nil {
+		return *res, err
+	}
+
+	// get the recipient's phone number from the address
+	recipientPhoneNumber, err := store.ReadEntry(ctx, publicKeyNormalized, storedb.DATA_PUBLIC_KEY_REVERSE)
+	if err != nil || len(recipientPhoneNumber) == 0 {
+		logg.WarnCtxf(ctx, "Recipient address not registered, switching to normal transaction", "address", address)
+		recipientPhoneNumber = nil
+	}
+
+	if err := h.determineAndSaveTransactionType(ctx, sessionId, []byte(address), recipientPhoneNumber); err != nil {
+		return *res, err
+	}
+
+	return *res, nil
+}
+
+func (h *MenuHandlers) handleAlias(ctx context.Context, sessionId, recipient string, res *resource.Result) (resource.Result, error) {
+	store := h.userdataStore
+	flag_invalid_recipient, _ := h.flagManager.GetFlag("flag_invalid_recipient")
+	flag_api_error, _ := h.flagManager.GetFlag("flag_api_call_error")
+
+	var aliasAddressResult string
+
+	if strings.Contains(recipient, ".") {
+		alias, err := h.accountService.CheckAliasAddress(ctx, recipient)
+		if err == nil {
+			aliasAddressResult = alias.Address
+		} else {
+			logg.ErrorCtxf(ctx, "Failed to resolve alias", "alias", recipient, "error", err)
 		}
+	} else {
+		for _, domain := range config.SearchDomains() {
+			fqdn := fmt.Sprintf("%s.%s", recipient, domain)
+			logg.InfoCtxf(ctx, "Trying alias", "fqdn", fqdn)
 
-		switch recipientType {
-		case "phone number":
-			// format the phone number
-			formattedNumber, err := phone.FormatPhoneNumber(recipient)
-			if err != nil {
-				logg.ErrorCtxf(ctx, "Failed to format the phone number: %s", recipient, "error", err)
-				return res, err
-			}
-
-			// Check if the phone number is registered
-			publicKey, err := store.ReadEntry(ctx, formattedNumber, storedb.DATA_PUBLIC_KEY)
-			if err != nil {
-				if db.IsNotFound(err) {
-					logg.InfoCtxf(ctx, "Unregistered phone number: %s", recipient)
-					res.FlagSet = append(res.FlagSet, flag_invalid_recipient_with_invite)
-					res.Content = recipient
-					return res, nil
-				}
-
-				logg.ErrorCtxf(ctx, "failed to read publicKey entry with", "key", storedb.DATA_PUBLIC_KEY, "error", err)
-				return res, err
-			}
-
-			// Save the publicKey as the recipient
-			err = store.WriteEntry(ctx, sessionId, storedb.DATA_RECIPIENT, publicKey)
-			if err != nil {
-				logg.ErrorCtxf(ctx, "failed to write recipient entry with", "key", storedb.DATA_RECIPIENT, "value", string(publicKey), "error", err)
-				return res, err
-			}
-
-		case "address":
-			// checksum the address
-			address := ethutils.ChecksumAddress(recipient)
-
-			// Save the valid Ethereum address as the recipient
-			err = store.WriteEntry(ctx, sessionId, storedb.DATA_RECIPIENT, []byte(address))
-			if err != nil {
-				logg.ErrorCtxf(ctx, "failed to write recipient entry with", "key", storedb.DATA_RECIPIENT, "value", recipient, "error", err)
-				return res, err
-			}
-
-		case "alias":
-			if strings.Contains(recipient, ".") {
-				AliasAddress, err = h.accountService.CheckAliasAddress(ctx, recipient)
-				if err == nil {
-					AliasAddressResult = AliasAddress.Address
-				} else {
-					logg.ErrorCtxf(ctx, "failed to resolve alias", "alias", recipient, "error_alias_check", err)
-				}
+			alias, err := h.accountService.CheckAliasAddress(ctx, fqdn)
+			if err == nil {
+				res.FlagReset = append(res.FlagReset, flag_api_error)
+				aliasAddressResult = alias.Address
+				break
 			} else {
-				//Perform a search for each search domain,break on first match
-				for _, domain := range config.SearchDomains() {
-					fqdn := fmt.Sprintf("%s.%s", recipient, domain)
-					logg.InfoCtxf(ctx, "Resolving with fqdn alias", "alias", fqdn)
-					AliasAddress, err = h.accountService.CheckAliasAddress(ctx, fqdn)
-					if err == nil {
-						res.FlagReset = append(res.FlagReset, flag_api_error)
-						AliasAddressResult = AliasAddress.Address
-						continue
-					} else {
-						res.FlagSet = append(res.FlagSet, flag_api_error)
-						logg.ErrorCtxf(ctx, "failed to resolve alias", "alias", recipient, "error_alias_check", err)
-						return res, nil
-					}
-				}
-			}
-			if AliasAddressResult == "" {
-				res.Content = recipient
-				res.FlagSet = append(res.FlagSet, flag_invalid_recipient)
-				return res, nil
-			} else {
-				err = store.WriteEntry(ctx, sessionId, storedb.DATA_RECIPIENT, []byte(AliasAddressResult))
-				if err != nil {
-					logg.ErrorCtxf(ctx, "failed to write recipient entry with", "key", storedb.DATA_RECIPIENT, "value", AliasAddressResult, "error", err)
-					return res, err
-				}
+				res.FlagSet = append(res.FlagSet, flag_api_error)
+				logg.ErrorCtxf(ctx, "Alias resolution failed", "alias", fqdn, "error", err)
+				return *res, nil
 			}
 		}
 	}
 
-	return res, nil
+	if aliasAddressResult == "" {
+		res.FlagSet = append(res.FlagSet, flag_invalid_recipient)
+		res.Content = recipient
+		return *res, nil
+	}
+
+	if err := store.WriteEntry(ctx, sessionId, storedb.DATA_RECIPIENT, []byte(aliasAddressResult)); err != nil {
+		logg.ErrorCtxf(ctx, "Failed to store alias recipient", "error", err)
+		return *res, err
+	}
+
+	// Normalize the alias address to fetch the recipient's phone number
+	publicKeyNormalized, err := hex.NormalizeHex(aliasAddressResult)
+	if err != nil {
+		logg.ErrorCtxf(ctx, "Failed to normalize alias address", "address", aliasAddressResult, "error", err)
+		return *res, err
+	}
+
+	// get the recipient's phone number from the address
+	recipientPhoneNumber, err := store.ReadEntry(ctx, publicKeyNormalized, storedb.DATA_PUBLIC_KEY_REVERSE)
+	if err != nil || len(recipientPhoneNumber) == 0 {
+		logg.WarnCtxf(ctx, "Alias address not registered, switching to normal transaction", "address", aliasAddressResult)
+		recipientPhoneNumber = nil
+	}
+
+	if err := h.determineAndSaveTransactionType(ctx, sessionId, []byte(aliasAddressResult), recipientPhoneNumber); err != nil {
+		return *res, err
+	}
+
+	return *res, nil
+}
+
+// determineAndSaveTransactionType centralizes transaction-type logic and recipient info persistence.
+// It expects the session to already have the recipient's public key (address) written.
+func (h *MenuHandlers) determineAndSaveTransactionType(
+	ctx context.Context,
+	sessionId string,
+	publicKey []byte,
+	recipientPhoneNumber []byte,
+) error {
+	store := h.userdataStore
+	txType := "swap"
+
+	// Read sender's active address
+	senderActiveAddress, err := store.ReadEntry(ctx, sessionId, storedb.DATA_ACTIVE_ADDRESS)
+	if err != nil {
+		logg.ErrorCtxf(ctx, "Failed to read sender active address", "error", err)
+		return err
+	}
+
+	var recipientActiveAddress []byte
+	if recipientPhoneNumber != nil {
+		recipientActiveAddress, _ = store.ReadEntry(ctx, string(recipientPhoneNumber), storedb.DATA_ACTIVE_ADDRESS)
+	}
+
+	// recipient has no active token → normal transaction
+	if recipientActiveAddress == nil {
+		txType = "normal"
+	} else if senderActiveAddress != nil && string(senderActiveAddress) == string(recipientActiveAddress) {
+		// recipient has active token same as sender → normal transaction
+		txType = "normal"
+	}
+
+	// Save the transaction type
+	if err := store.WriteEntry(ctx, sessionId, storedb.DATA_SEND_TRANSACTION_TYPE, []byte(txType)); err != nil {
+		logg.ErrorCtxf(ctx, "Failed to write transaction type", "type", txType, "error", err)
+		return err
+	}
+
+	// Save the recipient's phone number only if it exists
+	if recipientPhoneNumber != nil {
+		if err := store.WriteEntry(ctx, sessionId, storedb.DATA_RECIPIENT_PHONE_NUMBER, recipientPhoneNumber); err != nil {
+			logg.ErrorCtxf(ctx, "Failed to write recipient phone number", "type", txType, "error", err)
+			return err
+		}
+	} else {
+		logg.InfoCtxf(ctx, "No recipient phone number found for public key", "publicKey", string(publicKey))
+	}
+
+	return nil
 }
 
 // TransactionReset resets the previous transaction data (Recipient and Amount)
@@ -164,6 +268,16 @@ func (h *MenuHandlers) TransactionReset(ctx context.Context, sym string, input [
 		return res, nil
 	}
 
+	err = store.WriteEntry(ctx, sessionId, storedb.DATA_SEND_TRANSACTION_TYPE, []byte(""))
+	if err != nil {
+		return res, nil
+	}
+
+	err = store.WriteEntry(ctx, sessionId, storedb.DATA_RECIPIENT_PHONE_NUMBER, []byte(""))
+	if err != nil {
+		return res, nil
+	}
+
 	res.FlagReset = append(res.FlagReset, flag_invalid_recipient, flag_invalid_recipient_with_invite)
 
 	return res, nil
@@ -191,29 +305,192 @@ func (h *MenuHandlers) ResetTransactionAmount(ctx context.Context, sym string, i
 	return res, nil
 }
 
-// MaxAmount gets the current balance from the API and sets it as
+// MaxAmount checks the transaction type to determine the displayed max amount.
+// If the transaction type is "swap", it checks the max swappable amount and sets this as the content.
+// If the transaction type is "normal", gets the current sender's balance from the store and sets it as
 // the result content.
 func (h *MenuHandlers) MaxAmount(ctx context.Context, sym string, input []byte) (resource.Result, error) {
 	var res resource.Result
-	var err error
 
 	sessionId, ok := ctx.Value("SessionId").(string)
 	if !ok {
 		return res, fmt.Errorf("missing session")
 	}
-	store := h.userdataStore
 
-	activeBal, err := store.ReadEntry(ctx, sessionId, storedb.DATA_ACTIVE_BAL)
+	flag_api_error, _ := h.flagManager.GetFlag("flag_api_error")
+	flag_swap_transaction, _ := h.flagManager.GetFlag("flag_swap_transaction")
+	userStore := h.userdataStore
+
+	// Fetch session data
+	transactionType, activeBal, activeSym, activeAddress, publicKey, activeDecimal, err := h.getSessionData(ctx, sessionId)
 	if err != nil {
-		logg.ErrorCtxf(ctx, "failed to read activeBal entry with", "key", storedb.DATA_ACTIVE_BAL, "error", err)
 		return res, err
 	}
 
-	res.Content = string(activeBal)
+	// Format the active balance amount to 2 decimal places
+	formattedBalance, _ := store.TruncateDecimalString(string(activeBal), 2)
 
+	// If normal transaction, return balance
+	if string(transactionType) == "normal" {
+		res.FlagReset = append(res.FlagReset, flag_swap_transaction)
+		res.Content = fmt.Sprintf("%s %s", formattedBalance, string(activeSym))
+		return res, nil
+	}
+
+	res.FlagSet = append(res.FlagSet, flag_swap_transaction)
+
+	// Get the recipient's phone number to read other data items
+	recipientPhoneNumber, err := userStore.ReadEntry(ctx, sessionId, storedb.DATA_RECIPIENT_PHONE_NUMBER)
+	if err != nil {
+		// invalid state
+		return res, err
+	}
+	recipientActiveSym, recipientActiveAddress, recipientActiveDecimal, err := h.getRecipientData(ctx, string(recipientPhoneNumber))
+	if err != nil {
+		return res, err
+	}
+
+	// Resolve active pool address
+	activePoolAddress, err := h.resolveActivePoolAddress(ctx, sessionId)
+	if err != nil {
+		return res, err
+	}
+
+	// Check if sender token is swappable
+	canSwap, err := h.accountService.CheckTokenInPool(ctx, string(activePoolAddress), string(activeAddress))
+	if err != nil || !canSwap.CanSwapFrom {
+		if err != nil {
+			res.FlagSet = append(res.FlagSet, flag_api_error)
+			logg.ErrorCtxf(ctx, "failed on CheckTokenInPool", "error", err)
+		}
+		res.Content = fmt.Sprintf("%s %s", formattedBalance, string(activeSym))
+		return res, err
+	}
+
+	// Calculate max swappable amount
+	maxStr, err := h.calculateSwapMaxAmount(ctx, activePoolAddress, activeAddress, recipientActiveAddress, publicKey, activeDecimal)
+	if err != nil {
+		res.FlagSet = append(res.FlagSet, flag_api_error)
+		return res, err
+	}
+
+	// Fallback if below minimum
+	maxFloat, _ := strconv.ParseFloat(maxStr, 64)
+	if maxFloat < 0.1 {
+		res.Content = fmt.Sprintf("%s %s", formattedBalance, string(activeSym))
+		return res, nil
+	}
+
+	// Save max swap amount and return
+	err = userStore.WriteEntry(ctx, sessionId, storedb.DATA_ACTIVE_SWAP_MAX_AMOUNT, []byte(maxStr))
+	if err != nil {
+		logg.ErrorCtxf(ctx, "failed to write swap max amount", "value", maxStr, "error", err)
+		return res, err
+	}
+
+	// save swap related data for the swap preview
+	metadata := &dataserviceapi.TokenHoldings{
+		TokenSymbol:   string(recipientActiveSym),
+		Balance:       formattedBalance, //not used
+		TokenDecimals: string(recipientActiveDecimal),
+		TokenAddress:  string(recipientActiveAddress),
+	}
+
+	// Store the active swap_to data
+	if err := store.UpdateSwapToVoucherData(ctx, userStore, sessionId, metadata); err != nil {
+		logg.ErrorCtxf(ctx, "failed on UpdateSwapToVoucherData", "error", err)
+		return res, err
+	}
+
+	res.Content = fmt.Sprintf("%s %s", maxStr, string(activeSym))
 	return res, nil
 }
 
+func (h *MenuHandlers) getSessionData(ctx context.Context, sessionId string) (transactionType, activeBal, activeSym, activeAddress, publicKey, activeDecimal []byte, err error) {
+	store := h.userdataStore
+
+	transactionType, err = store.ReadEntry(ctx, sessionId, storedb.DATA_SEND_TRANSACTION_TYPE)
+	if err != nil {
+		return
+	}
+	activeBal, err = store.ReadEntry(ctx, sessionId, storedb.DATA_ACTIVE_BAL)
+	if err != nil {
+		return
+	}
+	activeAddress, err = store.ReadEntry(ctx, sessionId, storedb.DATA_ACTIVE_ADDRESS)
+	if err != nil {
+		return
+	}
+	activeSym, err = store.ReadEntry(ctx, sessionId, storedb.DATA_ACTIVE_SYM)
+	if err != nil {
+		return
+	}
+	publicKey, err = store.ReadEntry(ctx, sessionId, storedb.DATA_PUBLIC_KEY)
+	if err != nil {
+		return
+	}
+	activeDecimal, err = store.ReadEntry(ctx, sessionId, storedb.DATA_ACTIVE_DECIMAL)
+	if err != nil {
+		return
+	}
+	return
+}
+
+func (h *MenuHandlers) getRecipientData(ctx context.Context, sessionId string) (recipientActiveSym, recipientActiveAddress, recipientActiveDecimal []byte, err error) {
+	store := h.userdataStore
+
+	recipientActiveSym, err = store.ReadEntry(ctx, sessionId, storedb.DATA_ACTIVE_SYM)
+	if err != nil {
+		return
+	}
+	recipientActiveAddress, err = store.ReadEntry(ctx, sessionId, storedb.DATA_ACTIVE_ADDRESS)
+	if err != nil {
+		return
+	}
+	recipientActiveDecimal, err = store.ReadEntry(ctx, sessionId, storedb.DATA_ACTIVE_DECIMAL)
+	if err != nil {
+		return
+	}
+	return
+}
+
+func (h *MenuHandlers) resolveActivePoolAddress(ctx context.Context, sessionId string) ([]byte, error) {
+	store := h.userdataStore
+	addr, err := store.ReadEntry(ctx, sessionId, storedb.DATA_ACTIVE_POOL_ADDRESS)
+	if err == nil {
+		return addr, nil
+	}
+	if db.IsNotFound(err) {
+		defaultAddr := []byte(config.DefaultPoolAddress())
+		if err := store.WriteEntry(ctx, sessionId, storedb.DATA_ACTIVE_POOL_ADDRESS, defaultAddr); err != nil {
+			logg.ErrorCtxf(ctx, "failed to write default pool address", "error", err)
+			return nil, err
+		}
+		return defaultAddr, nil
+	}
+	logg.ErrorCtxf(ctx, "failed to read active pool address", "error", err)
+	return nil, err
+}
+
+func (h *MenuHandlers) calculateSwapMaxAmount(ctx context.Context, poolAddress, fromAddress, toAddress, publicKey, decimal []byte) (string, error) {
+	swapLimit, err := h.accountService.GetSwapFromTokenMaxLimit(
+		ctx,
+		string(poolAddress),
+		string(fromAddress),
+		string(toAddress),
+		string(publicKey),
+	)
+	if err != nil {
+		logg.ErrorCtxf(ctx, "failed on GetSwapFromTokenMaxLimit", "error", err)
+		return "", err
+	}
+
+	scaled := store.ScaleDownBalance(swapLimit.Max, string(decimal))
+
+	formattedAmount, _ := store.TruncateDecimalString(string(scaled), 2)
+	return formattedAmount, nil
+}
+
 // ValidateAmount ensures that the given input is a valid amount and that
 // it is not more than the current balance.
 func (h *MenuHandlers) ValidateAmount(ctx context.Context, sym string, input []byte) (resource.Result, error) {
@@ -285,7 +562,7 @@ func (h *MenuHandlers) GetRecipient(ctx context.Context, sym string, input []byt
 	recipient, _ := store.ReadEntry(ctx, sessionId, storedb.DATA_TEMPORARY_VALUE)
 	if len(recipient) == 0 {
 		logg.ErrorCtxf(ctx, "recipient is empty", "key", storedb.DATA_TEMPORARY_VALUE)
-		return res, fmt.Errorf("Data error encountered")
+		return res, fmt.Errorf("data error encountered")
 	}
 
 	res.Content = string(recipient)
@@ -391,3 +668,208 @@ func (h *MenuHandlers) InitiateTransaction(ctx context.Context, sym string, inpu
 	res.FlagReset = append(res.FlagReset, flag_account_authorized)
 	return res, nil
 }
+
+// TransactionSwapPreview displays the send swap preview and estimates
+func (h *MenuHandlers) TransactionSwapPreview(ctx context.Context, sym string, input []byte) (resource.Result, error) {
+	var res resource.Result
+	sessionId, ok := ctx.Value("SessionId").(string)
+	if !ok {
+		return res, fmt.Errorf("missing session")
+	}
+
+	inputStr := string(input)
+	if inputStr == "0" {
+		return res, nil
+	}
+
+	flag_invalid_amount, _ := h.flagManager.GetFlag("flag_invalid_amount")
+
+	code := codeFromCtx(ctx)
+	l := gotext.NewLocale(translationDir, code)
+	l.AddDomain("default")
+
+	userStore := h.userdataStore
+
+	recipientPhoneNumber, err := userStore.ReadEntry(ctx, sessionId, storedb.DATA_RECIPIENT_PHONE_NUMBER)
+	if err != nil {
+		// invalid state
+		return res, err
+	}
+
+	swapData, err := store.ReadSwapPreviewData(ctx, userStore, sessionId)
+	if err != nil {
+		return res, err
+	}
+
+	maxValue, err := strconv.ParseFloat(swapData.ActiveSwapMaxAmount, 64)
+	if err != nil {
+		logg.ErrorCtxf(ctx, "Failed to convert the swapMaxAmount to a float", "error", err)
+		return res, err
+	}
+
+	inputAmount, err := strconv.ParseFloat(inputStr, 64)
+	if err != nil || inputAmount > maxValue {
+		res.FlagSet = append(res.FlagSet, flag_invalid_amount)
+		res.Content = inputStr
+		return res, nil
+	}
+
+	// Format the amount to 2 decimal places
+	formattedAmount, err := store.TruncateDecimalString(inputStr, 2)
+	if err != nil {
+		res.FlagSet = append(res.FlagSet, flag_invalid_amount)
+		res.Content = inputStr
+		return res, nil
+	}
+
+	finalAmountStr, err := store.ParseAndScaleAmount(formattedAmount, swapData.ActiveSwapFromDecimal)
+	if err != nil {
+		return res, err
+	}
+
+	err = userStore.WriteEntry(ctx, sessionId, storedb.DATA_ACTIVE_SWAP_AMOUNT, []byte(finalAmountStr))
+	if err != nil {
+		logg.ErrorCtxf(ctx, "failed to write swap amount entry with", "key", storedb.DATA_ACTIVE_SWAP_AMOUNT, "value", finalAmountStr, "error", err)
+		return res, err
+	}
+	
+	// call the API to get the quote
+	r, err := h.accountService.GetPoolSwapQuote(ctx, finalAmountStr, swapData.PublicKey, swapData.ActiveSwapFromAddress, swapData.ActivePoolAddress, swapData.ActiveSwapToAddress)
+	if err != nil {
+		flag_api_error, _ := h.flagManager.GetFlag("flag_api_call_error")
+		res.FlagSet = append(res.FlagSet, flag_api_error)
+		res.Content = l.Get("Your request failed. Please try again later.")
+		logg.ErrorCtxf(ctx, "failed on poolSwap", "error", err)
+		return res, nil
+	}
+
+	// store the outvalue as the final amount
+	err = userStore.WriteEntry(ctx, sessionId, storedb.DATA_AMOUNT, []byte(r.OutValue))
+	if err != nil {
+		logg.ErrorCtxf(ctx, "failed to write amount value entry with", "key", storedb.DATA_AMOUNT, "value", r.OutValue, "error", err)
+		return res, err
+	}
+
+	// Scale down the quoted amount
+	quoteAmountStr := store.ScaleDownBalance(r.OutValue, swapData.ActiveSwapToDecimal)
+
+	// Format the qouteAmount amount to 2 decimal places
+	qouteAmount, _ := store.TruncateDecimalString(quoteAmountStr, 2)
+
+	// store the qouteAmount in the temporary value
+	err = userStore.WriteEntry(ctx, sessionId, storedb.DATA_TEMPORARY_VALUE, []byte(qouteAmount))
+	if err != nil {
+		logg.ErrorCtxf(ctx, "failed to write temporary qouteAmount entry with", "key", storedb.DATA_TEMPORARY_VALUE, "value", qouteAmount, "error", err)
+		return res, err
+	}
+
+	res.Content = fmt.Sprintf(
+		"%s will receive %s %s",
+		string(recipientPhoneNumber), qouteAmount, swapData.ActiveSwapToSym,
+	)
+
+	return res, nil
+}
+
+// TransactionInitiateSwap calls the poolSwap and returns a confirmation based on the result.
+func (h *MenuHandlers) TransactionInitiateSwap(ctx context.Context, sym string, input []byte) (resource.Result, error) {
+	var res resource.Result
+	var err error
+	sessionId, ok := ctx.Value("SessionId").(string)
+	if !ok {
+		return res, fmt.Errorf("missing session")
+	}
+
+	flag_account_authorized, _ := h.flagManager.GetFlag("flag_account_authorized")
+	flag_swap_transaction, _ := h.flagManager.GetFlag("flag_swap_transaction")
+
+	code := codeFromCtx(ctx)
+	l := gotext.NewLocale(translationDir, code)
+	l.AddDomain("default")
+
+	userStore := h.userdataStore
+
+	swapData, err := store.ReadSwapPreviewData(ctx, userStore, sessionId)
+	if err != nil {
+		return res, err
+	}
+
+	swapAmount, err := userStore.ReadEntry(ctx, sessionId, storedb.DATA_ACTIVE_SWAP_AMOUNT)
+	if err != nil {
+		logg.ErrorCtxf(ctx, "failed to read swapAmount entry with", "key", storedb.DATA_ACTIVE_SWAP_AMOUNT, "error", err)
+		return res, err
+	}
+
+	swapAmountStr := string(swapAmount)
+
+	// Call the poolSwap API
+	poolSwap, err := h.accountService.PoolSwap(ctx, swapAmountStr, swapData.PublicKey, swapData.ActiveSwapFromAddress, swapData.ActivePoolAddress, swapData.ActiveSwapToAddress)
+	if err != nil {
+		flag_api_error, _ := h.flagManager.GetFlag("flag_api_call_error")
+		res.FlagSet = append(res.FlagSet, flag_api_error)
+		res.Content = l.Get("Your request failed. Please try again later.")
+		logg.ErrorCtxf(ctx, "failed on poolSwap", "error", err)
+		return res, nil
+	}
+
+	swapTrackingId := poolSwap.TrackingId
+	logg.InfoCtxf(ctx, "poolSwap", "swapTrackingId", swapTrackingId)
+
+	// Initiate a send
+	recipientPublicKey, err := userStore.ReadEntry(ctx, sessionId, storedb.DATA_RECIPIENT)
+	if err != nil {
+		logg.ErrorCtxf(ctx, "failed to read swapAmount entry with", "key", storedb.DATA_ACTIVE_SWAP_AMOUNT, "error", err)
+		return res, err
+	}
+	recipientPhoneNumber, err := userStore.ReadEntry(ctx, sessionId, storedb.DATA_RECIPIENT_PHONE_NUMBER)
+	if err != nil {
+		// invalid state
+		return res, err
+	}
+
+	// read the amount that should be sent
+	amount, err := userStore.ReadEntry(ctx, sessionId, storedb.DATA_AMOUNT)
+	if err != nil {
+		// invalid state
+		return res, err
+	}
+
+	// Call TokenTransfer with the expected swap amount
+	tokenTransfer, err := h.accountService.TokenTransfer(ctx, string(amount), swapData.PublicKey, string(recipientPublicKey), swapData.ActiveSwapToAddress)
+	if err != nil {
+		flag_api_error, _ := h.flagManager.GetFlag("flag_api_call_error")
+		res.FlagSet = append(res.FlagSet, flag_api_error)
+		res.Content = l.Get("Your request failed. Please try again later.")
+		logg.ErrorCtxf(ctx, "failed on TokenTransfer", "error", err)
+		return res, nil
+	}
+
+	trackingId := tokenTransfer.TrackingId
+	logg.InfoCtxf(ctx, "TokenTransfer", "trackingId", trackingId)
+
+	res.Content = l.Get(
+		"Your request has been sent. %s will receive %s %s from %s.",
+		string(recipientPhoneNumber),
+		swapData.TemporaryValue,
+		swapData.ActiveSwapToSym,
+		sessionId,
+	)
+
+	res.FlagReset = append(res.FlagReset, flag_account_authorized, flag_swap_transaction)
+	return res, nil
+}
+
+// ClearTransactionTypeFlag resets the flag when a user goes back.
+func (h *MenuHandlers) ClearTransactionTypeFlag(ctx context.Context, sym string, input []byte) (resource.Result, error) {
+	var res resource.Result
+
+	flag_swap_transaction, _ := h.flagManager.GetFlag("flag_swap_transaction")
+
+	inputStr := string(input)
+	if inputStr == "0" {
+		res.FlagReset = append(res.FlagReset, flag_swap_transaction)
+		return res, nil
+	}
+
+	return res, nil
+}

handlers/local.go

@@ -136,6 +136,10 @@ func (ls *LocalHandlerService) GetHandler(accountService remote.AccountService)
 	ls.DbRs.AddLocalFunc("swap_max_limit", appHandlers.SwapMaxLimit)
 	ls.DbRs.AddLocalFunc("swap_preview", appHandlers.SwapPreview)
 	ls.DbRs.AddLocalFunc("initiate_swap", appHandlers.InitiateSwap)
+	ls.DbRs.AddLocalFunc("transaction_swap_preview", appHandlers.TransactionSwapPreview)
+	ls.DbRs.AddLocalFunc("transaction_initiate_swap", appHandlers.TransactionInitiateSwap)
+	ls.DbRs.AddLocalFunc("clear_trans_type_flag", appHandlers.ClearTransactionTypeFlag)
+
 	ls.first = appHandlers.Init
 
 	return appHandlers, nil

menutraversal_test/group_test.json

@@ -5,19 +5,19 @@
             "steps": [
                 {
                     "input": "",
-                    "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                    "expectedContent": "{balance}\n\n1:Send\n2:Swap\n3:My Vouchers\n4:Select pool\n5:My Account\n6:Help\n9:Quit"
                 },
                 {
-                    "input": "2",
+                    "input": "3",
                     "expectedContent": "My vouchers\n1:Select voucher\n2:Voucher details\n0:Back"
                 },
                 {
                     "input": "1",
-                    "expectedContent": "Select number or symbol from your vouchers:\n1SRF\n0:Back\n99:Quit"
+                    "expectedContent": "Select number or symbol from your vouchers:\n1:SRF\n0:Back\n99:Quit"
                 },
                 {
                     "input": "",
-                    "expectedContent": "Select number or symbol from your vouchers:\n1SRF\n0:Back\n99:Quit"
+                    "expectedContent": "Select number or symbol from your vouchers:\n1:SRF\n0:Back\n99:Quit"
                 },
                 {
                     "input": "1",
@@ -29,7 +29,7 @@
                 },
                 {
                     "input": "0",
-                    "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                    "expectedContent": "{balance}\n\n1:Send\n2:Swap\n3:My Vouchers\n4:Select pool\n5:My Account\n6:Help\n9:Quit"
                 }
             ]
         },
@@ -38,15 +38,15 @@
             "steps": [
                 {
                     "input": "",
-                    "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                    "expectedContent": "{balance}\n\n1:Send\n2:Swap\n3:My Vouchers\n4:Select pool\n5:My Account\n6:Help\n9:Quit"
                 },
                 {
-                    "input": "2",
+                    "input": "3",
                     "expectedContent": "My vouchers\n1:Select voucher\n2:Voucher details\n0:Back"
                 },
                 {
                     "input": "1",
-                    "expectedContent": "Select number or symbol from your vouchers:\n1SRF\n0:Back\n99:Quit"
+                    "expectedContent": "Select number or symbol from your vouchers:\n1:SRF\n0:Back\n99:Quit"
                 },
                 {
                     "input": "SRF",
@@ -58,7 +58,7 @@
                 },
                 {
                     "input": "0",
-                    "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                    "expectedContent": "{balance}\n\n1:Send\n2:Swap\n3:My Vouchers\n4:Select pool\n5:My Account\n6:Help\n9:Quit"
                 }
             ]
         },
@@ -67,10 +67,10 @@
             "steps": [
                 {
                     "input": "",
-                    "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                    "expectedContent": "{balance}\n\n1:Send\n2:Swap\n3:My Vouchers\n4:Select pool\n5:My Account\n6:Help\n9:Quit"
                 },
                 {
-                    "input": "3",
+                    "input": "5",
                     "expectedContent": "My Account\n1:Profile\n2:Change language\n3:Check balances\n4:Check statement\n5:PIN options\n6:My Address\n7:My Alias\n0:Back"
                 },
                 {
@@ -95,7 +95,7 @@
                 },
                 {
                     "input": "0",
-                    "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                    "expectedContent": "{balance}\n\n1:Send\n2:Swap\n3:My Vouchers\n4:Select pool\n5:My Account\n6:Help\n9:Quit"
                 }
             ]
         },
@@ -104,10 +104,10 @@
             "steps": [
                 {
                     "input": "",
-                    "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                    "expectedContent": "{balance}\n\n1:Send\n2:Swap\n3:My Vouchers\n4:Select pool\n5:My Account\n6:Help\n9:Quit"
                 },
                 {
-                    "input": "3",
+                    "input": "5",
                     "expectedContent": "My Account\n1:Profile\n2:Change language\n3:Check balances\n4:Check statement\n5:PIN options\n6:My Address\n7:My Alias\n0:Back"
                 },
                 {
@@ -136,7 +136,7 @@
                 },
                 {
                     "input": "0",
-                    "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                    "expectedContent": "{balance}\n\n1:Send\n2:Swap\n3:My Vouchers\n4:Select pool\n5:My Account\n6:Help\n9:Quit"
                 }
             ]
         },
@@ -145,10 +145,10 @@
             "steps": [
                 {
                     "input": "",
-                    "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                    "expectedContent": "{balance}\n\n1:Send\n2:Swap\n3:My Vouchers\n4:Select pool\n5:My Account\n6:Help\n9:Quit"
                 },
                 {
-                    "input": "3",
+                    "input": "5",
                     "expectedContent": "My Account\n1:Profile\n2:Change language\n3:Check balances\n4:Check statement\n5:PIN options\n6:My Address\n7:My Alias\n0:Back"
                 },
                 {
@@ -177,7 +177,7 @@
                 },
                 {
                     "input": "0",
-                    "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                    "expectedContent": "{balance}\n\n1:Send\n2:Swap\n3:My Vouchers\n4:Select pool\n5:My Account\n6:Help\n9:Quit"
                 }
             ]
         },
@@ -186,10 +186,10 @@
             "steps": [
                 {
                     "input": "",
-                    "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                    "expectedContent": "{balance}\n\n1:Send\n2:Swap\n3:My Vouchers\n4:Select pool\n5:My Account\n6:Help\n9:Quit"
                 },
                 {
-                    "input": "3",
+                    "input": "5",
                     "expectedContent": "My Account\n1:Profile\n2:Change language\n3:Check balances\n4:Check statement\n5:PIN options\n6:My Address\n7:My Alias\n0:Back"
                 },
                 {
@@ -210,7 +210,7 @@
                 },
                 {
                     "input": "0",
-                    "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                    "expectedContent": "{balance}\n\n1:Send\n2:Swap\n3:My Vouchers\n4:Select pool\n5:My Account\n6:Help\n9:Quit"
                 }
             ]
         },
@@ -219,10 +219,10 @@
             "steps": [
                 {
                     "input": "",
-                    "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                    "expectedContent": "{balance}\n\n1:Send\n2:Swap\n3:My Vouchers\n4:Select pool\n5:My Account\n6:Help\n9:Quit"
                 },
                 {
-                    "input": "3",
+                    "input": "5",
                     "expectedContent": "My Account\n1:Profile\n2:Change language\n3:Check balances\n4:Check statement\n5:PIN options\n6:My Address\n7:My Alias\n0:Back"
                 },
                 {
@@ -235,7 +235,7 @@
                 },
                 {
                     "input": "0",
-                    "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                    "expectedContent": "{balance}\n\n1:Send\n2:Swap\n3:My Vouchers\n4:Select pool\n5:My Account\n6:Help\n9:Quit"
                 }
             ]
         },
@@ -244,10 +244,10 @@
             "steps": [
                 {
                     "input": "",
-                    "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                    "expectedContent": "{balance}\n\n1:Send\n2:Swap\n3:My Vouchers\n4:Select pool\n5:My Account\n6:Help\n9:Quit"
                 },
                 {
-                    "input": "3",
+                    "input": "5",
                     "expectedContent": "My Account\n1:Profile\n2:Change language\n3:Check balances\n4:Check statement\n5:PIN options\n6:My Address\n7:My Alias\n0:Back"
                 },
                 {
@@ -280,7 +280,7 @@
                 },
                 {
                     "input": "0",
-                    "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                    "expectedContent": "{balance}\n\n1:Send\n2:Swap\n3:My Vouchers\n4:Select pool\n5:My Account\n6:Help\n9:Quit"
                 }
             ]
         },
@@ -289,10 +289,10 @@
             "steps": [
                 {
                     "input": "",
-                    "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                    "expectedContent": "{balance}\n\n1:Send\n2:Swap\n3:My Vouchers\n4:Select pool\n5:My Account\n6:Help\n9:Quit"
                 },
                 {
-                    "input": "3",
+                    "input": "5",
                     "expectedContent": "My Account\n1:Profile\n2:Change language\n3:Check balances\n4:Check statement\n5:PIN options\n6:My Address\n7:My Alias\n0:Back"
                 },
                 {
@@ -325,7 +325,7 @@
                 },
                 {
                     "input": "0",
-                    "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                    "expectedContent": "{balance}\n\n1:Send\n2:Swap\n3:My Vouchers\n4:Select pool\n5:My Account\n6:Help\n9:Quit"
                 }
             ]
         },
@@ -334,10 +334,10 @@
             "steps": [
                 {
                     "input": "",
-                    "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                    "expectedContent": "{balance}\n\n1:Send\n2:Swap\n3:My Vouchers\n4:Select pool\n5:My Account\n6:Help\n9:Quit"
                 },
                 {
-                    "input": "3",
+                    "input": "5",
                     "expectedContent": "My Account\n1:Profile\n2:Change language\n3:Check balances\n4:Check statement\n5:PIN options\n6:My Address\n7:My Alias\n0:Back"
                 },
                 {
@@ -382,7 +382,7 @@
                 },
                 {
                     "input": "0",
-                    "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                    "expectedContent": "{balance}\n\n1:Send\n2:Swap\n3:My Vouchers\n4:Select pool\n5:My Account\n6:Help\n9:Quit"
                 }
             ]
         },
@@ -391,10 +391,10 @@
             "steps": [
                 {
                     "input": "",
-                    "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                    "expectedContent": "{balance}\n\n1:Send\n2:Swap\n3:My Vouchers\n4:Select pool\n5:My Account\n6:Help\n9:Quit"
                 },
                 {
-                    "input": "3",
+                    "input": "5",
                     "expectedContent": "My Account\n1:Profile\n2:Change language\n3:Check balances\n4:Check statement\n5:PIN options\n6:My Address\n7:My Alias\n0:Back"
                 },
                 {
@@ -419,7 +419,7 @@
                 },
                 {
                     "input": "0",
-                    "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                    "expectedContent": "{balance}\n\n1:Send\n2:Swap\n3:My Vouchers\n4:Select pool\n5:My Account\n6:Help\n9:Quit"
                 }
             ]
         },
@@ -428,10 +428,10 @@
             "steps": [
                 {
                     "input": "",
-                    "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                    "expectedContent": "{balance}\n\n1:Send\n2:Swap\n3:My Vouchers\n4:Select pool\n5:My Account\n6:Help\n9:Quit"
                 },
                 {
-                    "input": "3",
+                    "input": "5",
                     "expectedContent": "My Account\n1:Profile\n2:Change language\n3:Check balances\n4:Check statement\n5:PIN options\n6:My Address\n7:My Alias\n0:Back"
                 },
                 {
@@ -460,7 +460,7 @@
                 },
                 {
                     "input": "0",
-                    "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                    "expectedContent": "{balance}\n\n1:Send\n2:Swap\n3:My Vouchers\n4:Select pool\n5:My Account\n6:Help\n9:Quit"
                 }
             ]
         },
@@ -469,10 +469,10 @@
             "steps": [
                 {
                     "input": "",
-                    "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                    "expectedContent": "{balance}\n\n1:Send\n2:Swap\n3:My Vouchers\n4:Select pool\n5:My Account\n6:Help\n9:Quit"
                 },
                 {
-                    "input": "3",
+                    "input": "5",
                     "expectedContent": "My Account\n1:Profile\n2:Change language\n3:Check balances\n4:Check statement\n5:PIN options\n6:My Address\n7:My Alias\n0:Back"
                 },
                 {
@@ -497,7 +497,7 @@
                 },
                 {
                     "input": "0",
-                    "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                    "expectedContent": "{balance}\n\n1:Send\n2:Swap\n3:My Vouchers\n4:Select pool\n5:My Account\n6:Help\n9:Quit"
                 }
             ]
         },
@@ -506,10 +506,10 @@
             "steps": [
                 {
                     "input": "",
-                    "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                    "expectedContent": "{balance}\n\n1:Send\n2:Swap\n3:My Vouchers\n4:Select pool\n5:My Account\n6:Help\n9:Quit"
                 },
                 {
-                    "input": "3",
+                    "input": "5",
                     "expectedContent": "My Account\n1:Profile\n2:Change language\n3:Check balances\n4:Check statement\n5:PIN options\n6:My Address\n7:My Alias\n0:Back"
                 },
                 {
@@ -534,7 +534,7 @@
                 },
                 {
                     "input": "0",
-                    "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                    "expectedContent": "{balance}\n\n1:Send\n2:Swap\n3:My Vouchers\n4:Select pool\n5:My Account\n6:Help\n9:Quit"
                 }
             ]
         },
@@ -543,10 +543,10 @@
             "steps": [
                 {
                     "input": "",
-                    "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                    "expectedContent": "{balance}\n\n1:Send\n2:Swap\n3:My Vouchers\n4:Select pool\n5:My Account\n6:Help\n9:Quit"
                 },
                 {
-                    "input": "3",
+                    "input": "5",
                     "expectedContent": "My Account\n1:Profile\n2:Change language\n3:Check balances\n4:Check statement\n5:PIN options\n6:My Address\n7:My Alias\n0:Back"
                 },
                 {
@@ -571,7 +571,7 @@
                 },
                 {
                     "input": "0",
-                    "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                    "expectedContent": "{balance}\n\n1:Send\n2:Swap\n3:My Vouchers\n4:Select pool\n5:My Account\n6:Help\n9:Quit"
                 }
             ]
         },
@@ -580,10 +580,10 @@
             "steps": [
                 {
                     "input": "",
-                    "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                    "expectedContent": "{balance}\n\n1:Send\n2:Swap\n3:My Vouchers\n4:Select pool\n5:My Account\n6:Help\n9:Quit"
                 },
                 {
-                    "input": "3",
+                    "input": "5",
                     "expectedContent": "My Account\n1:Profile\n2:Change language\n3:Check balances\n4:Check statement\n5:PIN options\n6:My Address\n7:My Alias\n0:Back"
                 },
                 {
@@ -604,7 +604,7 @@
                 },
                 {
                     "input": "0",
-                    "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                    "expectedContent": "{balance}\n\n1:Send\n2:Swap\n3:My Vouchers\n4:Select pool\n5:My Account\n6:Help\n9:Quit"
                 }
             ]
         },
@@ -613,10 +613,10 @@
             "steps": [
                 {
                     "input": "",
-                    "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                    "expectedContent": "{balance}\n\n1:Send\n2:Swap\n3:My Vouchers\n4:Select pool\n5:My Account\n6:Help\n9:Quit"
                 },
                 {
-                    "input": "3",
+                    "input": "5",
                     "expectedContent": "My Account\n1:Profile\n2:Change language\n3:Check balances\n4:Check statement\n5:PIN options\n6:My Address\n7:My Alias\n0:Back"
                 },
                 {

menutraversal_test/profile_edit_start_familyname.json

@@ -5,10 +5,10 @@
                 "steps": [
                     {
                         "input": "",
-                        "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                        "expectedContent": "{balance}\n\n1:Send\n2:Swap\n3:My Vouchers\n4:Select pool\n5:My Account\n6:Help\n9:Quit"
                     },
                     {
-                        "input": "3",
+                        "input": "5",
                         "expectedContent": "My Account\n1:Profile\n2:Change language\n3:Check balances\n4:Check statement\n5:PIN options\n6:My Address\n7:My Alias\n0:Back"
                     },
                     {
@@ -49,7 +49,7 @@
                     },
                     {
                         "input": "0",
-                        "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                        "expectedContent": "{balance}\n\n1:Send\n2:Swap\n3:My Vouchers\n4:Select pool\n5:My Account\n6:Help\n9:Quit"
                     }
                 ]
             }

menutraversal_test/profile_edit_start_firstname.json

@@ -5,10 +5,10 @@
             "steps": [
                 {
                     "input": "",
-                    "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                    "expectedContent": "{balance}\n\n1:Send\n2:Swap\n3:My Vouchers\n4:Select pool\n5:My Account\n6:Help\n9:Quit"
                 },
                 {
-                    "input": "3",
+                    "input": "5",
                    "expectedContent": "My Account\n1:Profile\n2:Change language\n3:Check balances\n4:Check statement\n5:PIN options\n6:My Address\n7:My Alias\n0:Back"
                 },
                 {
@@ -53,7 +53,7 @@
                 },
                 {
                     "input": "0",
-                    "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                    "expectedContent": "{balance}\n\n1:Send\n2:Swap\n3:My Vouchers\n4:Select pool\n5:My Account\n6:Help\n9:Quit"
                 }
             ]
         }

menutraversal_test/profile_edit_start_gender.json

@@ -5,10 +5,10 @@
                 "steps": [
                     {
                         "input": "",
-                        "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                        "expectedContent": "{balance}\n\n1:Send\n2:Swap\n3:My Vouchers\n4:Select pool\n5:My Account\n6:Help\n9:Quit"
                     },
                     {
-                        "input": "3",
+                        "input": "5",
                         "expectedContent": "My Account\n1:Profile\n2:Change language\n3:Check balances\n4:Check statement\n5:PIN options\n6:My Address\n7:My Alias\n0:Back"
                     },
                     {
@@ -45,7 +45,7 @@
                     },
                     {
                         "input": "0",
-                        "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                        "expectedContent": "{balance}\n\n1:Send\n2:Swap\n3:My Vouchers\n4:Select pool\n5:My Account\n6:Help\n9:Quit"
                     }
                 ]
             }

menutraversal_test/profile_edit_start_location.json

@@ -5,10 +5,10 @@
                 "steps": [
                     {
                         "input": "",
-                        "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                        "expectedContent": "{balance}\n\n1:Send\n2:Swap\n3:My Vouchers\n4:Select pool\n5:My Account\n6:Help\n9:Quit"
                     },
                     {
-                        "input": "3",
+                        "input": "5",
                         "expectedContent": "My Account\n1:Profile\n2:Change language\n3:Check balances\n4:Check statement\n5:PIN options\n6:My Address\n7:My Alias\n0:Back"
                     },
                     {
@@ -37,7 +37,7 @@
                     },
                     {
                         "input": "0",
-                        "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                        "expectedContent": "{balance}\n\n1:Send\n2:Swap\n3:My Vouchers\n4:Select pool\n5:My Account\n6:Help\n9:Quit"
                     }
                 ]
             }

menutraversal_test/profile_edit_start_offerings.json

@@ -5,10 +5,10 @@
                 "steps": [
                     {
                         "input": "",
-                        "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                        "expectedContent": "{balance}\n\n1:Send\n2:Swap\n3:My Vouchers\n4:Select pool\n5:My Account\n6:Help\n9:Quit"
                     },
                     {
-                        "input": "3",
+                        "input": "5",
                         "expectedContent": "My Account\n1:Profile\n2:Change language\n3:Check balances\n4:Check statement\n5:PIN options\n6:My Address\n7:My Alias\n0:Back"
                     },
                     {
@@ -33,7 +33,7 @@
                     },
                     {
                         "input": "0",
-                        "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                        "expectedContent": "{balance}\n\n1:Send\n2:Swap\n3:My Vouchers\n4:Select pool\n5:My Account\n6:Help\n9:Quit"
                     }
                 ]
             }

menutraversal_test/profile_edit_start_yob.json

@@ -5,10 +5,10 @@
                 "steps": [
                     {
                         "input": "",
-                        "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                        "expectedContent": "{balance}\n\n1:Send\n2:Swap\n3:My Vouchers\n4:Select pool\n5:My Account\n6:Help\n9:Quit"
                     },
                     {
-                        "input": "3",
+                        "input": "5",
                         "expectedContent": "My Account\n1:Profile\n2:Change language\n3:Check balances\n4:Check statement\n5:PIN options\n6:My Address\n7:My Alias\n0:Back"
                     },
                     {
@@ -41,7 +41,7 @@
                     },
                     {
                         "input": "0",
-                        "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                        "expectedContent": "{balance}\n\n1:Send\n2:Swap\n3:My Vouchers\n4:Select pool\n5:My Account\n6:Help\n9:Quit"
                     }
                 ]
             }

menutraversal_test/profile_edit_when_adjacent_item_set.json

@@ -5,10 +5,10 @@
                 "steps": [
                     {
                         "input": "",
-                        "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                        "expectedContent": "{balance}\n\n1:Send\n2:Swap\n3:My Vouchers\n4:Select pool\n5:My Account\n6:Help\n9:Quit"
                     },
                     {
-                        "input": "3",
+                        "input": "5",
                         "expectedContent": "My Account\n1:Profile\n2:Change language\n3:Check balances\n4:Check statement\n5:PIN options\n6:My Address\n7:My Alias\n0:Back"
                     },
                     {
@@ -61,7 +61,7 @@
                     },
                     {
                         "input": "0",
-                        "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                        "expectedContent": "{balance}\n\n1:Send\n2:Swap\n3:My Vouchers\n4:Select pool\n5:My Account\n6:Help\n9:Quit"
                     }
                 ]
             }

menutraversal_test/test_setup.json

@@ -57,7 +57,7 @@
                 "steps": [
                     {
                         "input": "",
-                        "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                        "expectedContent": "{balance}\n\n1:Send\n2:Swap\n3:My Vouchers\n4:Select pool\n5:My Account\n6:Help\n9:Quit"
                     },
                     {
                         "input": "1",
@@ -86,10 +86,10 @@
                 "steps": [
                     {
                         "input": "",
-                        "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                        "expectedContent": "{balance}\n\n1:Send\n2:Swap\n3:My Vouchers\n4:Select pool\n5:My Account\n6:Help\n9:Quit"
                     },
                     {
-                        "input": "4",
+                        "input": "6",
                         "expectedContent": "For more help,please call: 0757628885"
                     }
                 ]
@@ -99,7 +99,7 @@
                 "steps": [
                     {
                         "input": "",
-                        "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                        "expectedContent": "{balance}\n\n1:Send\n2:Swap\n3:My Vouchers\n4:Select pool\n5:My Account\n6:Help\n9:Quit"
                     },
                     {
                         "input": "9",
@@ -112,10 +112,10 @@
                 "steps": [
                     {
                         "input": "",
-                        "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                        "expectedContent": "{balance}\n\n1:Send\n2:Swap\n3:My Vouchers\n4:Select pool\n5:My Account\n6:Help\n9:Quit"
                     },
                     {
-                        "input": "3",
+                        "input": "5",
                         "expectedContent": "My Account\n1:Profile\n2:Change language\n3:Check balances\n4:Check statement\n5:PIN options\n6:My Address\n7:My Alias\n0:Back"
                     },
                     {

services/registration/amount.vis

@@ -4,6 +4,9 @@ RELOAD max_amount
 MAP max_amount
 MOUT back 0
 HALT
+LOAD clear_trans_type_flag 6
+RELOAD clear_trans_type_flag
+CATCH transaction_swap flag_swap_transaction 1
 LOAD validate_amount 64
 RELOAD validate_amount
 CATCH api_failure flag_api_call_error 1

services/registration/pp.csv

@@ -35,3 +35,4 @@ flag,flag_account_pin_reset,41,this is set on an account when an admin triggers
 flag,flag_incorrect_pool,42,this is set when the user selects an invalid pool
 flag,flag_low_swap_amount,43,this is set when the swap max limit is less than 0.1
 flag,flag_alias_unavailable,44,this is set when the preferred alias is not available
+flag,flag_swap_transaction,45,this is set when the transaction will involve performing a swap

services/registration/transaction_swap

@@ -0,0 +1,3 @@
+{{.transaction_swap_preview}}
+
+Please enter your PIN to confirm:

services/registration/transaction_swap.vis

@@ -0,0 +1,12 @@
+LOAD transaction_swap_preview 0
+MAP transaction_swap_preview
+CATCH api_failure flag_api_call_error 1
+MOUT back 0
+MOUT quit 9
+LOAD authorize_account 6
+HALT
+RELOAD authorize_account
+CATCH incorrect_pin flag_incorrect_pin 1
+INCMP _ 0
+INCMP quit 9
+INCMP transaction_swap_initiated *

services/registration/transaction_swap_initiated.vis

@@ -0,0 +1,4 @@
+LOAD reset_incorrect_pin 6
+CATCH _ flag_account_authorized 0
+LOAD transaction_initiate_swap 0
+HALT

store/db/db.go

@@ -89,6 +89,10 @@ const (
 	DATA_ACTIVE_POOL_NAME
 	// Holds the active pool symbol for the swap
 	DATA_ACTIVE_POOL_SYM
+	// Holds the send transaction type
+	DATA_SEND_TRANSACTION_TYPE
+	// Holds the recipient formatted phone number
+	DATA_RECIPIENT_PHONE_NUMBER
 )
 
 const (

store/swap_test.go

@@ -14,13 +14,13 @@ func TestReadSwapData(t *testing.T) {
 
 	// Test swap data
 	swapData := map[storedb.DataTyp]string{
-		storedb.DATA_PUBLIC_KEY:               publicKey,
-		storedb.DATA_ACTIVE_POOL_ADDRESS:      "0x48a953cA5cf5298bc6f6Af3C608351f537AAcb9e",
-		storedb.DATA_ACTIVE_SWAP_FROM_SYM:     "AMANI",
-		storedb.DATA_ACTIVE_SWAP_FROM_DECIMAL: "6",
-		storedb.DATA_ACTIVE_SWAP_FROM_ADDRESS: "0xc7B78Ac9ACB9E025C8234621FC515bC58179dEAe",
-		storedb.DATA_ACTIVE_SWAP_TO_SYM:       "cUSD",
-		storedb.DATA_ACTIVE_SWAP_TO_ADDRESS:   "0x765DE816845861e75A25fCA122bb6898B8B1282a",
+		storedb.DATA_PUBLIC_KEY:             publicKey,
+		storedb.DATA_ACTIVE_POOL_ADDRESS:    "0x48a953cA5cf5298bc6f6Af3C608351f537AAcb9e",
+		storedb.DATA_ACTIVE_SYM:             "AMANI",
+		storedb.DATA_ACTIVE_DECIMAL:         "6",
+		storedb.DATA_ACTIVE_ADDRESS:         "0xc7B78Ac9ACB9E025C8234621FC515bC58179dEAe",
+		storedb.DATA_ACTIVE_SWAP_TO_SYM:     "cUSD",
+		storedb.DATA_ACTIVE_SWAP_TO_ADDRESS: "0x765DE816845861e75A25fCA122bb6898B8B1282a",
 	}
 
 	// Store the data
@@ -53,15 +53,16 @@ func TestReadSwapPreviewData(t *testing.T) {
 
 	// Test swap preview data
 	swapPreviewData := map[storedb.DataTyp]string{
-		storedb.DATA_PUBLIC_KEY:               publicKey,
-		storedb.DATA_ACTIVE_SWAP_MAX_AMOUNT:   "1339482",
-		storedb.DATA_ACTIVE_SWAP_FROM_DECIMAL: "6",
-		storedb.DATA_ACTIVE_POOL_ADDRESS:      "0x48a953cA5cf5298bc6f6Af3C608351f537AAcb9e",
-		storedb.DATA_ACTIVE_SWAP_FROM_ADDRESS: "0xc7B78Ac9ACB9E025C8234621FC515bC58179dEAe",
-		storedb.DATA_ACTIVE_SWAP_FROM_SYM:     "AMANI",
-		storedb.DATA_ACTIVE_SWAP_TO_ADDRESS:   "0x765DE816845861e75A25fCA122bb6898B8B1282a",
-		storedb.DATA_ACTIVE_SWAP_TO_SYM:       "cUSD",
-		storedb.DATA_ACTIVE_SWAP_TO_DECIMAL:   "18",
+		storedb.DATA_TEMPORARY_VALUE:        "temp",
+		storedb.DATA_PUBLIC_KEY:             publicKey,
+		storedb.DATA_ACTIVE_SWAP_MAX_AMOUNT: "1339482",
+		storedb.DATA_ACTIVE_DECIMAL:         "6",
+		storedb.DATA_ACTIVE_POOL_ADDRESS:    "0x48a953cA5cf5298bc6f6Af3C608351f537AAcb9e",
+		storedb.DATA_ACTIVE_ADDRESS:         "0xc7B78Ac9ACB9E025C8234621FC515bC58179dEAe",
+		storedb.DATA_ACTIVE_SYM:             "AMANI",
+		storedb.DATA_ACTIVE_SWAP_TO_ADDRESS: "0x765DE816845861e75A25fCA122bb6898B8B1282a",
+		storedb.DATA_ACTIVE_SWAP_TO_SYM:     "cUSD",
+		storedb.DATA_ACTIVE_SWAP_TO_DECIMAL: "18",
 	}
 
 	// Store the data
@@ -72,6 +73,7 @@ func TestReadSwapPreviewData(t *testing.T) {
 	}
 
 	expectedResult := SwapPreviewData{
+		TemporaryValue:        "temp",
 		PublicKey:             "0X13242618721",
 		ActiveSwapMaxAmount:   "1339482",
 		ActiveSwapFromDecimal: "6",