Merge pull request 'menu-voucherlist' (#101) from menu-voucherlist into master

Reviewed-on: #101

internal/handlers/handlerservice.go

@@ -61,8 +61,8 @@ func (ls *LocalHandlerService) GetHandler(accountService server.AccountServiceIn
 	ussdHandlers = ussdHandlers.WithPersister(ls.Pe)
 	ls.DbRs.AddLocalFunc("set_language", ussdHandlers.SetLanguage)
 	ls.DbRs.AddLocalFunc("create_account", ussdHandlers.CreateAccount)
-	ls.DbRs.AddLocalFunc("save_pin", ussdHandlers.SavePin)
+	ls.DbRs.AddLocalFunc("save_temporary_pin", ussdHandlers.SaveTemporaryPin)
-	ls.DbRs.AddLocalFunc("verify_pin", ussdHandlers.VerifyPin)
+	ls.DbRs.AddLocalFunc("verify_create_pin", ussdHandlers.VerifyCreatePin)
 	ls.DbRs.AddLocalFunc("check_identifier", ussdHandlers.CheckIdentifier)
 	ls.DbRs.AddLocalFunc("check_account_status", ussdHandlers.CheckAccountStatus)
 	ls.DbRs.AddLocalFunc("authorize_account", ussdHandlers.Authorize)
@@ -89,11 +89,15 @@ func (ls *LocalHandlerService) GetHandler(accountService server.AccountServiceIn
 	ls.DbRs.AddLocalFunc("verify_yob", ussdHandlers.VerifyYob)
 	ls.DbRs.AddLocalFunc("reset_incorrect_date_format", ussdHandlers.ResetIncorrectYob)
 	ls.DbRs.AddLocalFunc("initiate_transaction", ussdHandlers.InitiateTransaction)
-	ls.DbRs.AddLocalFunc("save_temporary_pin", ussdHandlers.SaveTemporaryPin)
 	ls.DbRs.AddLocalFunc("verify_new_pin", ussdHandlers.VerifyNewPin)
 	ls.DbRs.AddLocalFunc("confirm_pin_change", ussdHandlers.ConfirmPinChange)
 	ls.DbRs.AddLocalFunc("quit_with_help", ussdHandlers.QuitWithHelp)
 	ls.DbRs.AddLocalFunc("fetch_custodial_balances", ussdHandlers.FetchCustodialBalances)
+	ls.DbRs.AddLocalFunc("set_default_voucher", ussdHandlers.SetDefaultVoucher)
+	ls.DbRs.AddLocalFunc("check_vouchers", ussdHandlers.CheckVouchers)
+	ls.DbRs.AddLocalFunc("get_vouchers", ussdHandlers.GetVoucherList)
+	ls.DbRs.AddLocalFunc("view_voucher", ussdHandlers.ViewVoucher)
+	ls.DbRs.AddLocalFunc("set_voucher", ussdHandlers.SetVoucher)
 
 	return ussdHandlers, nil
 }

internal/handlers/server/accountservice.go

@@ -7,6 +7,7 @@ import (
 	"fmt"
 	"io"
 	"net/http"
+	"os"
 	"time"
 
 	"git.grassecon.net/urdt/ussd/config"
@@ -24,6 +25,7 @@ type AccountServiceInterface interface {
 	CreateAccount(ctx context.Context) (*api.OKResponse, error)
 	CheckAccountStatus(ctx context.Context, trackingId string) (*models.TrackStatusResponse, error)
 	TrackAccountStatus(ctx context.Context, publicKey string) (*api.OKResponse, error)
+	FetchVouchers(ctx context.Context, publicKey string) (*models.VoucherHoldingResponse, error)
 }
 
 type AccountService struct {
@@ -169,6 +171,23 @@ func (as *AccountService) CreateAccount(ctx context.Context) (*api.OKResponse, e
 	return &okResponse, nil
 }
 
+// FetchVouchers retrieves the token holdings for a given public key from the custodial holdings API endpoint
+// Parameters:
+//   - publicKey: The public key associated with the account.
+func (as *AccountService) FetchVouchers(ctx context.Context, publicKey string) (*models.VoucherHoldingResponse, error) {
+	file, err := os.Open("sample_tokens.json")
+	if err != nil {
+		return nil, err
+	}
+	defer file.Close()
+	var holdings models.VoucherHoldingResponse
+
+	if err := json.NewDecoder(file).Decode(&holdings); err != nil {
+		return nil, err
+	}
+	return &holdings, nil
+}
+
 func (tas *TestAccountService) CreateAccount(ctx context.Context) (*api.OKResponse, error) {
 	return &api.OKResponse{
 		Ok:          true,
@@ -225,3 +244,31 @@ func (tas *TestAccountService) CheckAccountStatus(ctx context.Context, trackingI
 	}
 	return trackResponse, nil
 }
+
+func (tas *TestAccountService) FetchVouchers(ctx context.Context, publicKey string) (*models.VoucherHoldingResponse, error) {
+	return &models.VoucherHoldingResponse{
+		Ok: true,
+		Result: struct {
+			Holdings []struct {
+				ContractAddress string `json:"contractAddress"`
+				TokenSymbol     string `json:"tokenSymbol"`
+				TokenDecimals   string `json:"tokenDecimals"`
+				Balance         string `json:"balance"`
+			} `json:"holdings"`
+		}{
+			Holdings: []struct {
+				ContractAddress string `json:"contractAddress"`
+				TokenSymbol     string `json:"tokenSymbol"`
+				TokenDecimals   string `json:"tokenDecimals"`
+				Balance         string `json:"balance"`
+			}{
+				{
+					ContractAddress: "0x6CC75A06ac72eB4Db2eE22F781F5D100d8ec03ee",
+					TokenSymbol:     "SRF",
+					TokenDecimals:   "6",
+					Balance:         "2745987",
+				},
+			},
+		},
+	}, nil
+}

internal/handlers/ussd/menuhandler.go

@@ -22,6 +22,8 @@ import (
 	"git.grassecon.net/urdt/ussd/internal/handlers/server"
 	"git.grassecon.net/urdt/ussd/internal/utils"
 	"gopkg.in/leonelquinteros/gotext.v1"
+
+	"git.grassecon.net/urdt/ussd/internal/storage"
 )
 
 var (
@@ -187,33 +189,6 @@ func (h *Handlers) CreateAccount(ctx context.Context, sym string, input []byte)
 	return res, nil
 }
 
-// SavePin persists the user's PIN choice into the filesystem
-func (h *Handlers) SavePin(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_incorrect_pin, _ := h.flagManager.GetFlag("flag_incorrect_pin")
-	accountPIN := string(input)
-	// Validate that the PIN is a 4-digit number
-	if !isValidPIN(accountPIN) {
-		res.FlagSet = append(res.FlagSet, flag_incorrect_pin)
-		return res, nil
-	}
-
-	res.FlagReset = append(res.FlagReset, flag_incorrect_pin)
-	store := h.userdataStore
-	err = store.WriteEntry(ctx, sessionId, utils.DATA_ACCOUNT_PIN, []byte(accountPIN))
-	if err != nil {
-		return res, err
-	}
-	return res, nil
-}
-
 func (h *Handlers) VerifyNewPin(ctx context.Context, sym string, input []byte) (resource.Result, error) {
 	res := resource.Result{}
 	_, ok := ctx.Value("SessionId").(string)
@@ -232,6 +207,9 @@ func (h *Handlers) VerifyNewPin(ctx context.Context, sym string, input []byte) (
 	return res, nil
 }
 
+// SaveTemporaryPin saves the valid PIN input to the DATA_TEMPORARY_PIN
+// during the account creation process
+// and during the change PIN process
 func (h *Handlers) SaveTemporaryPin(ctx context.Context, sym string, input []byte) (resource.Result, error) {
 	var res resource.Result
 	var err error
@@ -240,6 +218,7 @@ func (h *Handlers) SaveTemporaryPin(ctx context.Context, sym string, input []byt
 	if !ok {
 		return res, fmt.Errorf("missing session")
 	}
+
 	flag_incorrect_pin, _ := h.flagManager.GetFlag("flag_incorrect_pin")
 
 	accountPIN := string(input)
@@ -249,11 +228,15 @@ func (h *Handlers) SaveTemporaryPin(ctx context.Context, sym string, input []byt
 		res.FlagSet = append(res.FlagSet, flag_incorrect_pin)
 		return res, nil
 	}
+
+	res.FlagReset = append(res.FlagReset, flag_incorrect_pin)
+
 	store := h.userdataStore
 	err = store.WriteEntry(ctx, sessionId, utils.DATA_TEMPORARY_PIN, []byte(accountPIN))
 	if err != nil {
 		return res, err
 	}
+
 	return res, nil
 }
 
@@ -282,10 +265,10 @@ func (h *Handlers) ConfirmPinChange(ctx context.Context, sym string, input []byt
 	return res, nil
 }
 
-// VerifyPin checks whether the confirmation PIN is similar to the account PIN
+// VerifyCreatePin checks whether the confirmation PIN is similar to the temporary PIN
-// If similar, it sets the USERFLAG_PIN_SET flag allowing the user
+// If similar, it sets the USERFLAG_PIN_SET flag and writes the account PIN allowing the user
 // to access the main menu
-func (h *Handlers) VerifyPin(ctx context.Context, sym string, input []byte) (resource.Result, error) {
+func (h *Handlers) VerifyCreatePin(ctx context.Context, sym string, input []byte) (resource.Result, error) {
 	var res resource.Result
 
 	flag_valid_pin, _ := h.flagManager.GetFlag("flag_valid_pin")
@@ -297,12 +280,12 @@ func (h *Handlers) VerifyPin(ctx context.Context, sym string, input []byte) (res
 		return res, fmt.Errorf("missing session")
 	}
 	store := h.userdataStore
-	AccountPin, err := store.ReadEntry(ctx, sessionId, utils.DATA_ACCOUNT_PIN)
+	temporaryPin, err := store.ReadEntry(ctx, sessionId, utils.DATA_TEMPORARY_PIN)
 	if err != nil {
 		return res, err
 	}
 
-	if bytes.Equal(input, AccountPin) {
+	if bytes.Equal(input, temporaryPin) {
 		res.FlagSet = []uint32{flag_valid_pin}
 		res.FlagReset = []uint32{flag_pin_mismatch}
 		res.FlagSet = append(res.FlagSet, flag_pin_set)
@@ -310,6 +293,11 @@ func (h *Handlers) VerifyPin(ctx context.Context, sym string, input []byte) (res
 		res.FlagSet = []uint32{flag_pin_mismatch}
 	}
 
+	err = store.WriteEntry(ctx, sessionId, utils.DATA_ACCOUNT_PIN, []byte(temporaryPin))
+	if err != nil {
+		return res, err
+	}
+
 	return res, nil
 }
 
@@ -628,14 +616,12 @@ func (h *Handlers) ResetIncorrectYob(ctx context.Context, sym string, input []by
 	return res, nil
 }
 
-// CheckBalance retrieves the balance from the API using the "PublicKey" and sets
+// CheckBalance retrieves the balance of the active voucher and sets
 // the balance as the result content
 func (h *Handlers) CheckBalance(ctx context.Context, sym string, input []byte) (resource.Result, error) {
 	var res resource.Result
 	var err error
 
-	flag_api_error, _ := h.flagManager.GetFlag("flag_api_call_error")
-
 	sessionId, ok := ctx.Value("SessionId").(string)
 	if !ok {
 		return res, fmt.Errorf("missing session")
@@ -646,23 +632,25 @@ func (h *Handlers) CheckBalance(ctx context.Context, sym string, input []byte) (
 	l.AddDomain("default")
 
 	store := h.userdataStore
-	publicKey, err := store.ReadEntry(ctx, sessionId, utils.DATA_PUBLIC_KEY)
+
+	// get the active sym and active balance
+	activeSym, err := store.ReadEntry(ctx, sessionId, utils.DATA_ACTIVE_SYM)
+	if err != nil {
+		if db.IsNotFound(err) {
+			balance := "0.00"
+			res.Content = l.Get("Balance: %s\n", balance)
+			return res, nil
+		}
+
+		return res, err
+	}
+
+	activeBal, err := store.ReadEntry(ctx, sessionId, utils.DATA_ACTIVE_BAL)
 	if err != nil {
 		return res, err
 	}
 
-	balanceResponse, err := h.accountService.CheckBalance(ctx, string(publicKey))
+	res.Content = l.Get("Balance: %s\n", fmt.Sprintf("%s %s", activeBal, activeSym))
-	if err != nil {
-		return res, nil
-	}
-	if !balanceResponse.Ok {
-		res.FlagSet = append(res.FlagSet, flag_api_error)
-		return res, nil
-	}
-	res.FlagReset = append(res.FlagReset, flag_api_error)
-	balance := balanceResponse.Result.Balance
-
-	res.Content = l.Get("Balance: %s\n", balance)
 
 	return res, nil
 }
@@ -800,15 +788,13 @@ func (h *Handlers) MaxAmount(ctx context.Context, sym string, input []byte) (res
 		return res, fmt.Errorf("missing session")
 	}
 	store := h.userdataStore
-	publicKey, _ := store.ReadEntry(ctx, sessionId, utils.DATA_PUBLIC_KEY)
 
-	balanceResp, err := h.accountService.CheckBalance(ctx, string(publicKey))
+	activeBal, err := store.ReadEntry(ctx, sessionId, utils.DATA_ACTIVE_BAL)
 	if err != nil {
-		return res, nil
+		return res, err
 	}
-	balance := balanceResp.Result.Balance
 
-	res.Content = balance
+	res.Content = string(activeBal)
 
 	return res, nil
 }
@@ -817,54 +803,29 @@ func (h *Handlers) MaxAmount(ctx context.Context, sym string, input []byte) (res
 // it is not more than the current balance.
 func (h *Handlers) ValidateAmount(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_invalid_amount, _ := h.flagManager.GetFlag("flag_invalid_amount")
-	flag_api_error, _ := h.flagManager.GetFlag("flag_api_call_error")
-
 	store := h.userdataStore
-	publicKey, _ := store.ReadEntry(ctx, sessionId, utils.DATA_PUBLIC_KEY)
 
-	amountStr := string(input)
+	var balanceValue float64
 
-	balanceRes, err := h.accountService.CheckBalance(ctx, string(publicKey))
+	// retrieve the active balance
-	balanceStr := balanceRes.Result.Balance
+	activeBal, err := store.ReadEntry(ctx, sessionId, utils.DATA_ACTIVE_BAL)
-
-	if !balanceRes.Ok {
-		res.FlagSet = append(res.FlagSet, flag_api_error)
-		return res, nil
-	}
 	if err != nil {
 		return res, err
 	}
-	res.Content = balanceStr
+	balanceValue, err = strconv.ParseFloat(string(activeBal), 64)
-	res.FlagReset = append(res.FlagReset, flag_api_error)
-
-	// Parse the balance
-	balanceParts := strings.Split(balanceStr, " ")
-	if len(balanceParts) != 2 {
-		return res, fmt.Errorf("unexpected balance format: %s", balanceStr)
-	}
-	balanceValue, err := strconv.ParseFloat(balanceParts[0], 64)
 	if err != nil {
-		return res, fmt.Errorf("failed to parse balance: %v", err)
+		return res, err
 	}
 
-	// Extract numeric part from input
+	// Extract numeric part from the input amount
-	re := regexp.MustCompile(`^(\d+(\.\d+)?)\s*(?:CELO)?$`)
+	amountStr := strings.TrimSpace(string(input))
-	matches := re.FindStringSubmatch(strings.TrimSpace(amountStr))
+	inputAmount, err := strconv.ParseFloat(amountStr, 64)
-	if len(matches) < 2 {
-		res.FlagSet = append(res.FlagSet, flag_invalid_amount)
-		res.Content = amountStr
-		return res, nil
-	}
-
-	inputAmount, err := strconv.ParseFloat(matches[1], 64)
 	if err != nil {
 		res.FlagSet = append(res.FlagSet, flag_invalid_amount)
 		res.Content = amountStr
@@ -877,12 +838,14 @@ func (h *Handlers) ValidateAmount(ctx context.Context, sym string, input []byte)
 		return res, nil
 	}
 
-	res.Content = fmt.Sprintf("%.3f", inputAmount) // Format to 3 decimal places
+	// Format the amount with 2 decimal places before saving
-	err = store.WriteEntry(ctx, sessionId, utils.DATA_AMOUNT, []byte(amountStr))
+	formattedAmount := fmt.Sprintf("%.2f", inputAmount)
+	err = store.WriteEntry(ctx, sessionId, utils.DATA_AMOUNT, []byte(formattedAmount))
 	if err != nil {
 		return res, err
 	}
 
+	res.Content = fmt.Sprintf("%s", formattedAmount)
 	return res, nil
 }
 
@@ -925,9 +888,16 @@ func (h *Handlers) GetAmount(ctx context.Context, sym string, input []byte) (res
 		return res, fmt.Errorf("missing session")
 	}
 	store := h.userdataStore
+
+	// retrieve the active symbol
+	activeSym, err := store.ReadEntry(ctx, sessionId, utils.DATA_ACTIVE_SYM)
+	if err != nil {
+		return res, err
+	}
+
 	amount, _ := store.ReadEntry(ctx, sessionId, utils.DATA_AMOUNT)
 
-	res.Content = string(amount)
+	res.Content = fmt.Sprintf("%s %s", string(amount), string(activeSym))
 
 	return res, nil
 }
@@ -953,7 +923,9 @@ func (h *Handlers) InitiateTransaction(ctx context.Context, sym string, input []
 
 	recipient, _ := store.ReadEntry(ctx, sessionId, utils.DATA_RECIPIENT)
 
-	res.Content = l.Get("Your request has been sent. %s will receive %s from %s.", string(recipient), string(amount), string(sessionId))
+	activeSym, _ := store.ReadEntry(ctx, sessionId, utils.DATA_ACTIVE_SYM)
+
+	res.Content = l.Get("Your request has been sent. %s will receive %s %s from %s.", string(recipient), string(amount), string(activeSym), string(sessionId))
 
 	account_authorized_flag, err := h.flagManager.GetFlag("flag_account_authorized")
 	if err != nil {
@@ -1037,3 +1009,279 @@ func (h *Handlers) GetProfileInfo(ctx context.Context, sym string, input []byte)
 
 	return res, nil
 }
+
+// SetDefaultVoucher retrieves the current vouchers
+// and sets the first as the default voucher, if no active voucher is set
+func (h *Handlers) SetDefaultVoucher(ctx context.Context, sym string, input []byte) (resource.Result, error) {
+	var res resource.Result
+	var err error
+	store := h.userdataStore
+
+	sessionId, ok := ctx.Value("SessionId").(string)
+	if !ok {
+		return res, fmt.Errorf("missing session")
+	}
+
+	flag_no_active_voucher, _ := h.flagManager.GetFlag("flag_no_active_voucher")
+
+	// check if the user has an active sym
+	_, err = store.ReadEntry(ctx, sessionId, utils.DATA_ACTIVE_SYM)
+
+	if err != nil {
+		if db.IsNotFound(err) {
+			publicKey, err := store.ReadEntry(ctx, sessionId, utils.DATA_PUBLIC_KEY)
+			if err != nil {
+				return res, nil
+			}
+
+			// Fetch vouchers from the API using the public key
+			vouchersResp, err := h.accountService.FetchVouchers(ctx, string(publicKey))
+			if err != nil {
+				return res, nil
+			}
+
+			// Return if there is no voucher
+			if len(vouchersResp.Result.Holdings) == 0 {
+				res.FlagSet = append(res.FlagSet, flag_no_active_voucher)
+				return res, nil
+			}
+
+			// Use only the first voucher
+			firstVoucher := vouchersResp.Result.Holdings[0]
+			defaultSym := firstVoucher.TokenSymbol
+			defaultBal := firstVoucher.Balance
+
+			// set the active symbol
+			err = store.WriteEntry(ctx, sessionId, utils.DATA_ACTIVE_SYM, []byte(defaultSym))
+			if err != nil {
+				return res, err
+			}
+			// set the active balance
+			err = store.WriteEntry(ctx, sessionId, utils.DATA_ACTIVE_BAL, []byte(defaultBal))
+			if err != nil {
+				return res, err
+			}
+
+			return res, nil
+		}
+
+		return res, err
+	}
+
+	res.FlagReset = append(res.FlagReset, flag_no_active_voucher)
+
+	return res, nil
+}
+
+// CheckVouchers retrieves the token holdings from the API using the "PublicKey" and stores
+// them to gdbm
+func (h *Handlers) CheckVouchers(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")
+	}
+
+	store := h.userdataStore
+	publicKey, err := store.ReadEntry(ctx, sessionId, utils.DATA_PUBLIC_KEY)
+	if err != nil {
+		return res, nil
+	}
+
+	// Fetch vouchers from the API using the public key
+	vouchersResp, err := h.accountService.FetchVouchers(ctx, string(publicKey))
+	if err != nil {
+		return res, nil
+	}
+
+	// process voucher data
+	voucherSymbolList, voucherBalanceList := ProcessVouchers(vouchersResp.Result.Holdings)
+
+	prefixdb := storage.NewSubPrefixDb(store, []byte("vouchers"))
+	err = prefixdb.Put(ctx, []byte("sym"), []byte(voucherSymbolList))
+	if err != nil {
+		return res, nil
+	}
+
+	err = prefixdb.Put(ctx, []byte("bal"), []byte(voucherBalanceList))
+	if err != nil {
+		return res, nil
+	}
+
+	return res, nil
+}
+
+// ProcessVouchers formats the holdings into symbol and balance lists.
+func ProcessVouchers(holdings []struct {
+	ContractAddress string `json:"contractAddress"`
+	TokenSymbol     string `json:"tokenSymbol"`
+	TokenDecimals   string `json:"tokenDecimals"`
+	Balance         string `json:"balance"`
+}) (string, string) {
+	var numberedSymbols, numberedBalances []string
+
+	for i, voucher := range holdings {
+		numberedSymbols = append(numberedSymbols, fmt.Sprintf("%d:%s", i+1, voucher.TokenSymbol))
+		numberedBalances = append(numberedBalances, fmt.Sprintf("%d:%s", i+1, voucher.Balance))
+	}
+
+	voucherSymbolList := strings.Join(numberedSymbols, "\n")
+	voucherBalanceList := strings.Join(numberedBalances, "\n")
+
+	return voucherSymbolList, voucherBalanceList
+}
+
+// GetVoucherList fetches the list of vouchers and formats them
+func (h *Handlers) GetVoucherList(ctx context.Context, sym string, input []byte) (resource.Result, error) {
+	var res resource.Result
+
+	// Read vouchers from the store
+	store := h.userdataStore
+	prefixdb := storage.NewSubPrefixDb(store, []byte("vouchers"))
+
+	voucherData, err := prefixdb.Get(ctx, []byte("sym"))
+	if err != nil {
+		return res, nil
+	}
+
+	res.Content = string(voucherData)
+
+	return res, nil
+}
+
+// ViewVoucher retrieves the token holding and balance from the subprefixDB
+func (h *Handlers) ViewVoucher(ctx context.Context, sym string, input []byte) (resource.Result, error) {
+	var res resource.Result
+	store := h.userdataStore
+
+	sessionId, ok := ctx.Value("SessionId").(string)
+	if !ok {
+		return res, fmt.Errorf("missing session")
+	}
+
+	flag_incorrect_voucher, _ := h.flagManager.GetFlag("flag_incorrect_voucher")
+
+	inputStr := string(input)
+
+	if inputStr == "0" || inputStr == "99" {
+		res.FlagReset = append(res.FlagReset, flag_incorrect_voucher)
+		return res, nil
+	}
+
+	prefixdb := storage.NewSubPrefixDb(store, []byte("vouchers"))
+
+	// Retrieve the voucher symbol list
+	voucherSymbolList, err := prefixdb.Get(ctx, []byte("sym"))
+	if err != nil {
+		return res, fmt.Errorf("failed to retrieve voucher symbol list: %v", err)
+	}
+
+	// Retrieve the voucher balance list
+	voucherBalanceList, err := prefixdb.Get(ctx, []byte("bal"))
+	if err != nil {
+		return res, fmt.Errorf("failed to retrieve voucher balance list: %v", err)
+	}
+
+	// match the voucher symbol and balance with the input
+	matchedSymbol, matchedBalance := MatchVoucher(inputStr, string(voucherSymbolList), string(voucherBalanceList))
+
+	// If a match is found, write the temporary sym and balance
+	if matchedSymbol != "" && matchedBalance != "" {
+		err = store.WriteEntry(ctx, sessionId, utils.DATA_TEMPORARY_SYM, []byte(matchedSymbol))
+		if err != nil {
+			return res, err
+		}
+		err = store.WriteEntry(ctx, sessionId, utils.DATA_TEMPORARY_BAL, []byte(matchedBalance))
+		if err != nil {
+			return res, err
+		}
+
+		res.FlagReset = append(res.FlagReset, flag_incorrect_voucher)
+		res.Content = fmt.Sprintf("%s\n%s", matchedSymbol, matchedBalance)
+	} else {
+		res.FlagSet = append(res.FlagSet, flag_incorrect_voucher)
+	}
+
+	return res, nil
+}
+
+// MatchVoucher finds the matching voucher symbol and balance based on the input.
+func MatchVoucher(inputStr string, voucherSymbols, voucherBalances string) (string, string) {
+	// Split the lists into slices for processing
+	symbols := strings.Split(voucherSymbols, "\n")
+	balances := strings.Split(voucherBalances, "\n")
+
+	var matchedSymbol, matchedBalance string
+
+	for i, symbol := range symbols {
+		symbolParts := strings.SplitN(symbol, ":", 2)
+		if len(symbolParts) != 2 {
+			continue
+		}
+		voucherNum := symbolParts[0]
+		voucherSymbol := symbolParts[1]
+
+		// Check if input matches either the number or the symbol
+		if inputStr == voucherNum || strings.EqualFold(inputStr, voucherSymbol) {
+			matchedSymbol = voucherSymbol
+			// Ensure there's a corresponding balance
+			if i < len(balances) {
+				matchedBalance = strings.SplitN(balances[i], ":", 2)[1]
+			}
+			break
+		}
+	}
+
+	return matchedSymbol, matchedBalance
+}
+
+// SetVoucher retrieves the temporary sym and balance,
+// sets them as the active data and
+// clears the temporary data
+func (h *Handlers) SetVoucher(ctx context.Context, sym string, input []byte) (resource.Result, error) {
+	var res resource.Result
+	var err error
+	store := h.userdataStore
+
+	sessionId, ok := ctx.Value("SessionId").(string)
+	if !ok {
+		return res, fmt.Errorf("missing session")
+	}
+
+	// get the current temporary symbol
+	temporarySym, err := store.ReadEntry(ctx, sessionId, utils.DATA_TEMPORARY_SYM)
+	if err != nil {
+		return res, err
+	}
+	// get the current temporary balance
+	temporaryBal, err := store.ReadEntry(ctx, sessionId, utils.DATA_TEMPORARY_BAL)
+	if err != nil {
+		return res, err
+	}
+
+	// set the active symbol
+	err = store.WriteEntry(ctx, sessionId, utils.DATA_ACTIVE_SYM, []byte(temporarySym))
+	if err != nil {
+		return res, err
+	}
+	// set the active balance
+	err = store.WriteEntry(ctx, sessionId, utils.DATA_ACTIVE_BAL, []byte(temporaryBal))
+	if err != nil {
+		return res, err
+	}
+
+	// reset the temporary symbol
+	err = store.WriteEntry(ctx, sessionId, utils.DATA_TEMPORARY_SYM, []byte(""))
+	if err != nil {
+		return res, err
+	}
+	// reset the temporary balance
+	err = store.WriteEntry(ctx, sessionId, utils.DATA_TEMPORARY_BAL, []byte(""))
+	if err != nil {
+		return res, err
+	}
+
+	res.Content = string(temporarySym)
+
+	return res, nil
+}

internal/handlers/ussd/menuhandler_test.go

@@ -218,7 +218,7 @@ func TestSaveFamilyname(t *testing.T) {
 	mockStore.AssertExpectations(t)
 }
 
-func TestSavePin(t *testing.T) {
+func TestSaveTemporaryPin(t *testing.T) {
 	fm, err := NewFlagManager(flagsPath)
 	mockStore := new(mocks.MockUserDataStore)
 	if err != nil {
@@ -260,10 +260,10 @@ func TestSavePin(t *testing.T) {
 		t.Run(tt.name, func(t *testing.T) {
 
 			// Set up the expected behavior of the mock
-			mockStore.On("WriteEntry", ctx, sessionId, utils.DATA_ACCOUNT_PIN, []byte(tt.input)).Return(nil)
+			mockStore.On("WriteEntry", ctx, sessionId, utils.DATA_TEMPORARY_PIN, []byte(tt.input)).Return(nil)
 
 			// Call the method
-			res, err := h.SavePin(ctx, "save_pin", tt.input)
+			res, err := h.SaveTemporaryPin(ctx, "save_pin", tt.input)
 
 			if err != nil {
 				t.Error(err)
@@ -481,37 +481,6 @@ func TestCheckIdentifier(t *testing.T) {
 	}
 }
 
-func TestMaxAmount(t *testing.T) {
-	mockStore := new(mocks.MockUserDataStore)
-	mockCreateAccountService := new(mocks.MockAccountService)
-
-	// Define test data
-	sessionId := "session123"
-	ctx := context.WithValue(context.Background(), "SessionId", sessionId)
-	publicKey := "0xcasgatweksalw1018221"
-
-	expectedBalance := &models.BalanceResponse{
-		Ok: true,
-	}
-
-	// Set up the expected behavior of the mock
-	mockStore.On("ReadEntry", ctx, sessionId, utils.DATA_PUBLIC_KEY).Return([]byte(publicKey), nil)
-	mockCreateAccountService.On("CheckBalance", publicKey).Return(expectedBalance, nil)
-
-	// Create the Handlers instance with the mock store
-	h := &Handlers{
-		userdataStore:  mockStore,
-		accountService: mockCreateAccountService,
-	}
-
-	// Call the method
-	res, _ := h.MaxAmount(ctx, "max_amount", []byte("check_balance"))
-
-	//Assert that the balance that was set as the result content is what was returned by  Check Balance
-	assert.Equal(t, expectedBalance.Result.Balance, res.Content)
-
-}
-
 func TestGetSender(t *testing.T) {
 	mockStore := new(mocks.MockUserDataStore)
 
@@ -532,26 +501,30 @@ func TestGetSender(t *testing.T) {
 }
 
 func TestGetAmount(t *testing.T) {
-	mockStore := new(mocks.MockUserDataStore)
+	mockDataStore := new(mocks.MockUserDataStore)
 
 	// Define test data
 	sessionId := "session123"
 	ctx := context.WithValue(context.Background(), "SessionId", sessionId)
-	Amount := "0.03CELO"
+	amount := "0.03"
+	activeSym := "SRF"
 
 	// Set up the expected behavior of the mock
-	mockStore.On("ReadEntry", ctx, sessionId, utils.DATA_AMOUNT).Return([]byte(Amount), nil)
+	mockDataStore.On("ReadEntry", ctx, sessionId, utils.DATA_ACTIVE_SYM).Return([]byte(activeSym), nil)
+	mockDataStore.On("ReadEntry", ctx, sessionId, utils.DATA_AMOUNT).Return([]byte(amount), nil)
 
 	// Create the Handlers instance with the mock store
 	h := &Handlers{
-		userdataStore: mockStore,
+		userdataStore: mockDataStore,
 	}
 
 	// Call the method
-	res, _ := h.GetAmount(ctx, "get_amount", []byte("Getting amount..."))
+	res, _ := h.GetAmount(ctx, "get_amount", []byte(""))
+
+	formattedAmount := fmt.Sprintf("%s %s", amount, activeSym)
 
 	//Assert that the retrieved amount is what was set as the content
-	assert.Equal(t, Amount, res.Content)
+	assert.Equal(t, formattedAmount, res.Content)
 
 }
 
@@ -980,7 +953,7 @@ func TestVerifyYob(t *testing.T) {
 	}
 }
 
-func TestVerifyPin(t *testing.T) {
+func TestVerifyCreatePin(t *testing.T) {
 	fm, err := NewFlagManager(flagsPath)
 
 	if err != nil {
@@ -1029,7 +1002,7 @@ func TestVerifyPin(t *testing.T) {
 		},
 	}
 
-	typ := utils.DATA_ACCOUNT_PIN
+	typ := utils.DATA_TEMPORARY_PIN
 
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
@@ -1037,8 +1010,11 @@ func TestVerifyPin(t *testing.T) {
 			// Define expected interactions with the mock
 			mockDataStore.On("ReadEntry", ctx, sessionId, typ).Return([]byte(firstSetPin), nil)
 
+			// Set up the expected behavior of the mock
+			mockDataStore.On("WriteEntry", ctx, sessionId, utils.DATA_ACCOUNT_PIN, []byte(firstSetPin)).Return(nil)
+
 			// Call the method under test
-			res, err := h.VerifyPin(ctx, "verify_pin", []byte(tt.input))
+			res, err := h.VerifyCreatePin(ctx, "verify_create_pin", []byte(tt.input))
 
 			// Assert that no errors occurred
 			assert.NoError(t, err)
@@ -1317,16 +1293,18 @@ func TestInitiateTransaction(t *testing.T) {
 		input          []byte
 		Recipient      []byte
 		Amount         []byte
+		ActiveSym      []byte
 		status         string
 		expectedResult resource.Result
 	}{
 		{
 			name:      "Test initiate transaction",
-			Amount:    []byte("0.002 CELO"),
+			Amount:    []byte("0.002"),
+			ActiveSym: []byte("SRF"),
 			Recipient: []byte("0x12415ass27192"),
 			expectedResult: resource.Result{
 				FlagReset: []uint32{account_authorized_flag},
-				Content:   "Your request has been sent. 0x12415ass27192 will receive 0.002 CELO from 254712345678.",
+				Content:   "Your request has been sent. 0x12415ass27192 will receive 0.002 SRF from 254712345678.",
 			},
 		},
 	}
@@ -1335,6 +1313,7 @@ func TestInitiateTransaction(t *testing.T) {
 			// Define expected interactions with the mock
 			mockDataStore.On("ReadEntry", ctx, sessionId, utils.DATA_AMOUNT).Return(tt.Amount, nil)
 			mockDataStore.On("ReadEntry", ctx, sessionId, utils.DATA_RECIPIENT).Return(tt.Recipient, nil)
+			mockDataStore.On("ReadEntry", ctx, sessionId, utils.DATA_ACTIVE_SYM).Return(tt.ActiveSym, nil)
 
 			// Call the method under test
 			res, _ := h.InitiateTransaction(ctx, "transaction_reset_amount", tt.input)
@@ -1464,7 +1443,6 @@ func TestValidateAmount(t *testing.T) {
 		t.Logf(err.Error())
 	}
 	flag_invalid_amount, _ := fm.parser.GetFlag("flag_invalid_amount")
-	flag_api_error, _ := fm.GetFlag("flag_api_call_error")
 	mockDataStore := new(mocks.MockUserDataStore)
 	mockCreateAccountService := new(mocks.MockAccountService)
 
@@ -1480,66 +1458,33 @@ func TestValidateAmount(t *testing.T) {
 	tests := []struct {
 		name           string
 		input          []byte
-		publicKey       []byte
+		activeBal      []byte
-		balanceResponse *models.BalanceResponse
+		balance        string
 		expectedResult resource.Result
 	}{
 		{
 			name:      "Test with valid amount",
-			input: []byte("0.001"),
+			input:     []byte("4.10"),
-			balanceResponse: &models.BalanceResponse{
+			activeBal: []byte("5"),
-				Ok: true,
-				Result: struct {
-					Balance string      `json:"balance"`
-					Nonce   json.Number `json:"nonce"`
-				}{
-					Balance: "0.003 CELO",
-					Nonce:   json.Number("0"),
-				},
-			},
-			publicKey: []byte("0xrqeqrequuq"),
 			expectedResult: resource.Result{
-				Content:   "0.001",
+				Content: "4.10",
-				FlagReset: []uint32{flag_api_error},
 			},
 		},
 		{
-			name:  "Test with amount larger than balance",
+			name:      "Test with amount larger than active balance",
-			input: []byte("0.02"),
+			input:     []byte("5.02"),
-			balanceResponse: &models.BalanceResponse{
+			activeBal: []byte("5"),
-				Ok: true,
-				Result: struct {
-					Balance string      `json:"balance"`
-					Nonce   json.Number `json:"nonce"`
-				}{
-					Balance: "0.003 CELO",
-					Nonce:   json.Number("0"),
-				},
-			},
-			publicKey: []byte("0xrqeqrequuq"),
 			expectedResult: resource.Result{
 				FlagSet: []uint32{flag_invalid_amount},
-				FlagReset: []uint32{flag_api_error},
+				Content: "5.02",
-				Content:   "0.02",
 			},
 		},
 		{
-			name:  "Test with invalid amount",
+			name:    "Test with invalid amount format",
 			input:   []byte("0.02ms"),
-			balanceResponse: &models.BalanceResponse{
+			activeBal: []byte("5"),
-				Ok: true,
-				Result: struct {
-					Balance string      `json:"balance"`
-					Nonce   json.Number `json:"nonce"`
-				}{
-					Balance: "0.003 CELO",
-					Nonce:   json.Number("0"),
-				},
-			},
-			publicKey: []byte("0xrqeqrequuq"),
 			expectedResult: resource.Result{
 				FlagSet: []uint32{flag_invalid_amount},
-				FlagReset: []uint32{flag_api_error},
 				Content: "0.02ms",
 			},
 		},
@@ -1547,23 +1492,23 @@ func TestValidateAmount(t *testing.T) {
 
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
+			// Mock behavior for active balance retrieval
+			mockDataStore.On("ReadEntry", ctx, sessionId, utils.DATA_ACTIVE_BAL).Return(tt.activeBal, nil)
 
-			mockDataStore.On("ReadEntry", ctx, sessionId, utils.DATA_PUBLIC_KEY).Return(tt.publicKey, nil)
+			// Mock behavior for storing the amount (if valid)
-			mockCreateAccountService.On("CheckBalance", string(tt.publicKey)).Return(tt.balanceResponse, nil)
 			mockDataStore.On("WriteEntry", ctx, sessionId, utils.DATA_AMOUNT, tt.input).Return(nil).Maybe()
 
 			// Call the method under test
 			res, _ := h.ValidateAmount(ctx, "test_validate_amount", tt.input)
 
-			// Assert that no errors occurred
+			// Assert no errors occurred
 			assert.NoError(t, err)
 
-			//Assert that the account created flag has been set to the result
+			// Assert the result matches the expected result
-			assert.Equal(t, res, tt.expectedResult, "Expected result should be equal to the actual result")
+			assert.Equal(t, tt.expectedResult, res, "Expected result should match actual result")
 
-			// Assert that expectations were met
+			// Assert all expectations were met
 			mockDataStore.AssertExpectations(t)
-
 		})
 	}
 }
@@ -1627,80 +1572,52 @@ func TestValidateRecipient(t *testing.T) {
 }
 
 func TestCheckBalance(t *testing.T) {
-	sessionId := "session123"
-	publicKey := "0X13242618721"
-	fm, _ := NewFlagManager(flagsPath)
-	flag_api_error, _ := fm.GetFlag("flag_api_call_error")
-
-	ctx := context.WithValue(context.Background(), "SessionId", sessionId)
-
 	tests := []struct {
 		name           string
-		balanceResonse *models.BalanceResponse
+		sessionId      string
+		publicKey      string
+		activeSym      string
+		activeBal      string
 		expectedResult resource.Result
+		expectError    bool
 	}{
 		{
-			name: "Test when checking a balance is not a success",
+			name:           "User with active sym",
-			balanceResonse: &models.BalanceResponse{
+			sessionId:      "session456",
-				Ok: false,
+			publicKey:      "0X98765432109",
-				Result: struct {
+			activeSym:      "ETH",
-					Balance string      `json:"balance"`
+			activeBal:      "1.5",
-					Nonce   json.Number `json:"nonce"`
+			expectedResult: resource.Result{Content: "Balance: 1.5 ETH\n"},
-				}{
+			expectError:    false,
-					Balance: "0.003 CELO",
-					Nonce:   json.Number("0"),
-				},
-			},
-			expectedResult: resource.Result{
-				FlagSet: []uint32{flag_api_error},
-			},
-		},
-		{
-			name: "Test when checking a balance is a success",
-			balanceResonse: &models.BalanceResponse{
-				Ok: true,
-				Result: struct {
-					Balance string      `json:"balance"`
-					Nonce   json.Number `json:"nonce"`
-				}{
-					Balance: "0.003 CELO",
-					Nonce:   json.Number("0"),
-				},
-			},
-			expectedResult: resource.Result{
-				Content:   "Balance: 0.003 CELO\n",
-				FlagReset: []uint32{flag_api_error},
-			},
 		},
 	}
 
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
-
 			mockDataStore := new(mocks.MockUserDataStore)
-			mockCreateAccountService := new(mocks.MockAccountService)
+			mockAccountService := new(mocks.MockAccountService)
-			mockState := state.NewState(16)
+			ctx := context.WithValue(context.Background(), "SessionId", tt.sessionId)
 
-			// Create the Handlers instance with the mock store
 			h := &Handlers{
 				userdataStore:  mockDataStore,
-				flagManager:    fm.parser,
+				accountService: mockAccountService,
-				st:             mockState,
-				accountService: mockCreateAccountService,
 			}
 
-			// Set up the expected behavior of the mock
+			// Mock for user with active sym
-			mockDataStore.On("ReadEntry", ctx, sessionId, utils.DATA_PUBLIC_KEY).Return([]byte(publicKey), nil)
+			mockDataStore.On("ReadEntry", ctx, tt.sessionId, utils.DATA_ACTIVE_SYM).Return([]byte(tt.activeSym), nil)
-			mockCreateAccountService.On("CheckBalance", string(publicKey)).Return(tt.balanceResonse, nil)
+			mockDataStore.On("ReadEntry", ctx, tt.sessionId, utils.DATA_ACTIVE_BAL).Return([]byte(tt.activeBal), nil)
 
-			// Call the method
+			res, err := h.CheckBalance(ctx, "check_balance", []byte(""))
-			res, _ := h.CheckBalance(ctx, "check_balance", []byte(""))
+
+			if tt.expectError {
+				assert.Error(t, err)
+			} else {
+				assert.NoError(t, err)
+				assert.Equal(t, tt.expectedResult, res, "Result should match expected output")
+			}
 
-			// Assert that expectations were met
 			mockDataStore.AssertExpectations(t)
-
+			mockAccountService.AssertExpectations(t)
-			//Assert that the result set to content is what was expected
-			assert.Equal(t, res, tt.expectedResult, "Result should contain flags set according to user input")
 		})
 	}
 }
@@ -1844,42 +1761,6 @@ func TestVerifyNewPin(t *testing.T) {
 
 }
 
-func TestSaveTemporaryPIn(t *testing.T) {
-
-	fm, err := NewFlagManager(flagsPath)
-
-	if err != nil {
-		t.Logf(err.Error())
-	}
-
-	// Create a new instance of UserDataStore
-	mockStore := new(mocks.MockUserDataStore)
-
-	// Define test data
-	sessionId := "session123"
-	PIN := "1234"
-	ctx := context.WithValue(context.Background(), "SessionId", sessionId)
-
-	// Set up the expected behavior of the mock
-	mockStore.On("WriteEntry", ctx, sessionId, utils.DATA_TEMPORARY_PIN, []byte(PIN)).Return(nil)
-
-	// Create the Handlers instance with the mock store
-	h := &Handlers{
-		userdataStore: mockStore,
-		flagManager:   fm.parser,
-	}
-
-	// Call the method
-	res, err := h.SaveTemporaryPin(ctx, "save_temporary_pin", []byte(PIN))
-
-	// Assert results
-	assert.NoError(t, err)
-	assert.Equal(t, resource.Result{}, res)
-
-	// Assert all expectations were met
-	mockStore.AssertExpectations(t)
-}
-
 func TestConfirmPin(t *testing.T) {
 	sessionId := "session123"
 
@@ -1927,7 +1808,40 @@ func TestConfirmPin(t *testing.T) {
 
 		})
 	}
+}
 
+func TestSetVoucher(t *testing.T) {
+	mockDataStore := new(mocks.MockUserDataStore)
+
+	sessionId := "session123"
+	ctx := context.WithValue(context.Background(), "SessionId", sessionId)
+
+	temporarySym := []byte("tempSym")
+	temporaryBal := []byte("tempBal")
+
+	// Set expectations for the mock data store
+	mockDataStore.On("ReadEntry", ctx, sessionId, utils.DATA_TEMPORARY_SYM).Return(temporarySym, nil)
+	mockDataStore.On("ReadEntry", ctx, sessionId, utils.DATA_TEMPORARY_BAL).Return(temporaryBal, nil)
+	mockDataStore.On("WriteEntry", ctx, sessionId, utils.DATA_ACTIVE_SYM, temporarySym).Return(nil)
+	mockDataStore.On("WriteEntry", ctx, sessionId, utils.DATA_ACTIVE_BAL, temporaryBal).Return(nil)
+	mockDataStore.On("WriteEntry", ctx, sessionId, utils.DATA_TEMPORARY_SYM, []byte("")).Return(nil)
+	mockDataStore.On("WriteEntry", ctx, sessionId, utils.DATA_TEMPORARY_BAL, []byte("")).Return(nil)
+
+	h := &Handlers{
+		userdataStore: mockDataStore,
+	}
+
+	// Call the method under test
+	res, err := h.SetVoucher(ctx, "someSym", []byte{})
+
+	// Assert that no errors occurred
+	assert.NoError(t, err)
+
+	// Assert that the result content is correct
+	assert.Equal(t, string(temporarySym), res.Content)
+
+	// Assert that expectations were met
+	mockDataStore.AssertExpectations(t)
 }
 
 func TestFetchCustodialBalances(t *testing.T) {

internal/mocks/servicemock.go

@@ -32,3 +32,9 @@ func (m *MockAccountService) TrackAccountStatus(ctx context.Context,publicKey st
 	args := m.Called(publicKey)
 	return args.Get(0).(*api.OKResponse), args.Error(1)
 }
+
+
+func (m *MockAccountService) FetchVouchers(ctx context.Context, publicKey string) (*models.VoucherHoldingResponse, error) {
+	args := m.Called(publicKey)
+	return args.Get(0).(*models.VoucherHoldingResponse), args.Error(1)
+}

internal/models/tokenresponse.go

@@ -0,0 +1,18 @@
+package models
+
+type ApiResponse struct {
+	OK          bool   `json:"ok"`
+	Description string `json:"description"`
+	Result      Result `json:"result"`
+}
+
+type Result struct {
+	Holdings []Holding `json:"holdings"`
+}
+
+type Holding struct {
+	ContractAddress string `json:"contractAddress"`
+	TokenSymbol     string `json:"tokenSymbol"`
+	TokenDecimals   string `json:"tokenDecimals"`
+	Balance         string `json:"balance"`
+}

internal/models/vouchersresponse.go

@@ -0,0 +1,15 @@
+package models
+
+// VoucherHoldingResponse represents a single voucher holding
+type VoucherHoldingResponse struct {
+	Ok          bool   `json:"ok"`
+	Description string `json:"description"`
+	Result      struct {
+		Holdings []struct {
+			ContractAddress string `json:"contractAddress"`
+			TokenSymbol     string `json:"tokenSymbol"`
+			TokenDecimals   string `json:"tokenDecimals"`
+			Balance         string `json:"balance"`
+		} `json:"holdings"`
+	} `json:"result"`
+}

internal/storage/db.go

@@ -22,11 +22,11 @@ func NewSubPrefixDb(store db.Db, pfx []byte) *SubPrefixDb {
 	}
 }
 
-func(s *SubPrefixDb) toKey(k []byte) []byte {
+func (s *SubPrefixDb) toKey(k []byte) []byte {
 	return append(s.pfx, k...)
 }
 
-func(s *SubPrefixDb) Get(ctx context.Context, key []byte) ([]byte, error) {
+func (s *SubPrefixDb) Get(ctx context.Context, key []byte) ([]byte, error) {
 	s.store.SetPrefix(DATATYPE_USERSUB)
 	key = s.toKey(key)
 	v, err := s.store.Get(ctx, key)
@@ -36,7 +36,7 @@ func(s *SubPrefixDb) Get(ctx context.Context, key []byte) ([]byte, error) {
 	return v, nil
 }
 
-func(s *SubPrefixDb) Put(ctx context.Context, key []byte, val []byte) error {
+func (s *SubPrefixDb) Put(ctx context.Context, key []byte, val []byte) error {
 	s.store.SetPrefix(DATATYPE_USERSUB)
 	key = s.toKey(key)
 	return s.store.Put(ctx, key, val)

internal/utils/db.go

@@ -23,6 +23,11 @@ const (
 	DATA_RECIPIENT
 	DATA_AMOUNT
 	DATA_TEMPORARY_PIN
+	DATA_VOUCHER_LIST
+	DATA_TEMPORARY_SYM
+	DATA_ACTIVE_SYM
+	DATA_TEMPORARY_BAL
+	DATA_ACTIVE_BAL
 )
 
 func typToBytes(typ DataTyp) []byte {

menutraversal_test/group_test.json

@@ -5,7 +5,7 @@
             "steps": [
                 {
                     "input": "",
-                    "expectedContent": "Balance: 0.003 CELO\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                    "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
                 },
                 {
                     "input": "3",
@@ -33,7 +33,7 @@
                 },
                 {
                     "input": "0",
-                    "expectedContent": "Balance: 0.003 CELO\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                    "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
                 }
             ]
         },
@@ -42,7 +42,7 @@
             "steps": [
                 {
                     "input": "",
-                    "expectedContent": "Balance: 0.003 CELO\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                    "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
                 },
                 {
                     "input": "3",
@@ -70,7 +70,7 @@
                 },
                 {
                     "input": "0",
-                    "expectedContent": "Balance: 0.003 CELO\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                    "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
                 }
             ]
         },
@@ -79,7 +79,7 @@
             "steps": [
                 {
                     "input": "",
-                    "expectedContent": "Balance: 0.003 CELO\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                    "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
                 },
                 {
                     "input": "3",
@@ -116,7 +116,7 @@
                 },
                 {
                     "input": "0",
-                    "expectedContent": "Balance: 0.003 CELO\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                    "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
                 }
             ]
         },
@@ -125,7 +125,7 @@
             "steps": [
                 {
                     "input": "",
-                    "expectedContent": "Balance: 0.003 CELO\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                    "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
                 },
                 {
                     "input": "3",
@@ -162,7 +162,7 @@
                 },
                 {
                     "input": "0",
-                    "expectedContent": "Balance: 0.003 CELO\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                    "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
                 }
             ]
         },
@@ -171,7 +171,7 @@
             "steps": [
                 {
                     "input": "",
-                    "expectedContent": "Balance: 0.003 CELO\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                    "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
                 },
                 {
                     "input": "3",
@@ -203,7 +203,7 @@
                 },
                 {
                     "input": "0",
-                    "expectedContent": "Balance: 0.003 CELO\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                    "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
                 }
             ]
         },
@@ -212,7 +212,7 @@
             "steps": [
                 {
                     "input": "",
-                    "expectedContent": "Balance: 0.003 CELO\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                    "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
                 },
                 {
                     "input": "3",
@@ -244,7 +244,7 @@
                 },
                 {
                     "input": "0",
-                    "expectedContent": "Balance: 0.003 CELO\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                    "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
                 }
                
             ]
@@ -254,7 +254,7 @@
             "steps": [
                 {
                     "input": "",
-                    "expectedContent": "Balance: 0.003 CELO\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                    "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
                 },
                 {
                     "input": "3",
@@ -286,7 +286,7 @@
                 },
                 {
                     "input": "0",
-                    "expectedContent": "Balance: 0.003 CELO\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                    "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
                 }
             ]
         },
@@ -295,7 +295,7 @@
             "steps": [
                 {
                     "input": "",
-                    "expectedContent": "Balance: 0.003 CELO\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                    "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
                 },
                 {
                     "input": "3",
@@ -327,7 +327,7 @@
                 },
                 {
                     "input": "0",
-                    "expectedContent": "Balance: 0.003 CELO\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                    "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
                 }
             ]
         },
@@ -336,7 +336,7 @@
             "steps": [
                 {
                     "input": "",
-                    "expectedContent": "Balance: 0.003 CELO\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                    "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
                 },
                 {
                     "input": "3",
@@ -368,7 +368,7 @@
                 },
                 {
                     "input": "0",
-                    "expectedContent": "Balance: 0.003 CELO\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                    "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
                 }
             ]
         },
@@ -377,7 +377,7 @@
             "steps": [
                 {
                     "input": "",
-                    "expectedContent": "Balance: 0.003 CELO\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                    "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
                 },
                 {
                     "input": "3",
@@ -409,7 +409,7 @@
                 },
                 {
                     "input": "0",
-                    "expectedContent": "Balance: 0.003 CELO\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                    "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
                 }
             ]
         },
@@ -418,7 +418,7 @@
             "steps": [
                 {
                     "input": "",
-                    "expectedContent": "Balance: 0.003 CELO\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                    "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
                 },
                 {
                     "input": "3",
@@ -446,7 +446,7 @@
                 },
                 {
                     "input": "0",
-                    "expectedContent": "Balance: 0.003 CELO\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                    "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
                 }
             ]
         }

menutraversal_test/menu_traversal_test.go

@@ -43,6 +43,39 @@ func extractPublicKey(response []byte) string {
 	return ""
 }
 
+// Extracts the balance value from the engine response.
+func extractBalance(response []byte) string {
+	// Regex to match "Balance: <amount> <symbol>" followed by a newline
+	re := regexp.MustCompile(`(?m)^Balance:\s+(\d+(\.\d+)?)\s+([A-Z]+)`)
+	match := re.FindSubmatch(response)
+	if match != nil {
+		return string(match[1]) + " " + string(match[3]) // "<amount> <symbol>"
+	}
+	return ""
+}
+
+// Extracts the Maximum amount value from the engine response.
+func extractMaxAmount(response []byte) string {
+	// Regex to match "Maximum amount: <amount>" followed by a newline
+	re := regexp.MustCompile(`(?m)^Maximum amount:\s+(\d+(\.\d+)?)`)
+	match := re.FindSubmatch(response)
+	if match != nil {
+		return string(match[1]) // "<amount>"
+	}
+	return ""
+}
+
+// Extracts the send amount value from the engine response.
+func extractSendAmount(response []byte) string {
+	// Regex to match the pattern "will receive X.XX SYM from"
+	re := regexp.MustCompile(`will receive (\d+\.\d{2}\s+[A-Z]+) from`)
+	match := re.FindSubmatch(response)
+	if match != nil {
+		return string(match[1]) // Returns "X.XX SYM"
+	}
+	return ""
+}
+
 func TestMain(m *testing.M) {
 	sessionID = GenerateSessionId()
 	defer func() {
@@ -154,6 +187,12 @@ func TestMainMenuHelp(t *testing.T) {
 				}
 
 				b := w.Bytes()
+				balance := extractBalance(b)
+
+				expectedContent := []byte(step.ExpectedContent)
+				expectedContent = bytes.Replace(expectedContent, []byte("{balance}"), []byte(balance), -1)
+
+				step.ExpectedContent = string(expectedContent)
 				match, err := step.MatchesExpectedContent(b)
 				if err != nil {
 					t.Fatalf("Error compiling regex for step '%s': %v", step.Input, err)
@@ -189,6 +228,12 @@ func TestMainMenuQuit(t *testing.T) {
 				}
 
 				b := w.Bytes()
+				balance := extractBalance(b)
+
+				expectedContent := []byte(step.ExpectedContent)
+				expectedContent = bytes.Replace(expectedContent, []byte("{balance}"), []byte(balance), -1)
+
+				step.ExpectedContent = string(expectedContent)
 				match, err := step.MatchesExpectedContent(b)
 				if err != nil {
 					t.Fatalf("Error compiling regex for step '%s': %v", step.Input, err)
@@ -225,8 +270,13 @@ func TestMyAccount_MyAddress(t *testing.T) {
 				}
 				b := w.Bytes()
 
+				balance := extractBalance(b)
 				publicKey := extractPublicKey(b)
-				expectedContent := bytes.Replace([]byte(step.ExpectedContent), []byte("{public_key}"), []byte(publicKey), -1)
+
+				expectedContent := []byte(step.ExpectedContent)
+				expectedContent = bytes.Replace(expectedContent, []byte("{balance}"), []byte(balance), -1)
+				expectedContent = bytes.Replace(expectedContent, []byte("{public_key}"), []byte(publicKey), -1)
+
 				step.ExpectedContent = string(expectedContent)
 				match, err := step.MatchesExpectedContent(b)
 				if err != nil {
@@ -240,6 +290,52 @@ func TestMyAccount_MyAddress(t *testing.T) {
 	}
 }
 
+func TestMainMenuSend(t *testing.T) {
+	en, fn, _ := testutil.TestEngine(sessionID)
+	defer fn()
+	ctx := context.Background()
+	sessions := testData
+	for _, session := range sessions {
+		groups := driver.FilterGroupsByName(session.Groups, "send_with_invalid_inputs")
+		for _, group := range groups {
+			for _, step := range group.Steps {
+				cont, err := en.Exec(ctx, []byte(step.Input))
+				if err != nil {
+					t.Fatalf("Test case '%s' failed at input '%s': %v", group.Name, step.Input, err)
+					return
+				}
+				if !cont {
+					break
+				}
+				w := bytes.NewBuffer(nil)
+				if _, err := en.Flush(ctx, w); err != nil {
+					t.Fatalf("Test case '%s' failed during Flush: %v", group.Name, err)
+				}
+
+				b := w.Bytes()
+				balance := extractBalance(b)
+				max_amount := extractMaxAmount(b)
+				send_amount := extractSendAmount(b)
+
+				expectedContent := []byte(step.ExpectedContent)
+				expectedContent = bytes.Replace(expectedContent, []byte("{balance}"), []byte(balance), -1)
+				expectedContent = bytes.Replace(expectedContent, []byte("{max_amount}"), []byte(max_amount), -1)
+				expectedContent = bytes.Replace(expectedContent, []byte("{send_amount}"), []byte(send_amount), -1)
+				expectedContent = bytes.Replace(expectedContent, []byte("{session_id}"), []byte(sessionID), -1)
+
+				step.ExpectedContent = string(expectedContent)
+				match, err := step.MatchesExpectedContent(b)
+				if err != nil {
+					t.Fatalf("Error compiling regex for step '%s': %v", step.Input, err)
+				}
+				if !match {
+					t.Fatalf("expected:\n\t%s\ngot:\n\t%s\n", step.ExpectedContent, b)
+				}
+			}
+		}
+	}
+}
+
 func TestGroups(t *testing.T) {
 	groups, err := driver.LoadTestGroups(groupTestFile)
 	if err != nil {
@@ -265,6 +361,13 @@ func TestGroups(t *testing.T) {
 				t.Errorf("Test case '%s' failed during Flush: %v", tt.Name, err)
 			}
 			b := w.Bytes()
+			balance := extractBalance(b)
+
+			expectedContent := []byte(tt.ExpectedContent)
+			expectedContent = bytes.Replace(expectedContent, []byte("{balance}"), []byte(balance), -1)
+
+			tt.ExpectedContent = string(expectedContent)
+
 			match, err := tt.MatchesExpectedContent(b)
 			if err != nil {
 				t.Fatalf("Error compiling regex for step '%s': %v", tt.Input, err)
@@ -272,7 +375,6 @@ func TestGroups(t *testing.T) {
 			if !match {
 				t.Fatalf("expected:\n\t%s\ngot:\n\t%s\n", tt.ExpectedContent, b)
 			}
-
 		})
 	}
 }

menutraversal_test/test_setup.json

@@ -57,7 +57,7 @@
                 "steps": [
                     {
                         "input": "",
-                        "expectedContent": "Balance: 0.003 CELO\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                        "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
                     },
                     {
                         "input": "1",
@@ -73,19 +73,19 @@
                     },
                     {
                         "input": "065656",
-                        "expectedContent": "Maximum amount: 0.003 CELO\nEnter amount:\n0:Back"
+                        "expectedContent": "{max_amount}\nEnter amount:\n0:Back"
                     },
                     {
-                        "input": "0.1",
+                        "input": "10000000",
-                        "expectedContent": "Amount 0.1 is invalid, please try again:\n1:retry\n9:Quit"
+                        "expectedContent": "Amount 10000000 is invalid, please try again:\n1:retry\n9:Quit"
                     },
                     {
                         "input": "1",
-                        "expectedContent": "Maximum amount: 0.003 CELO\nEnter amount:\n0:Back"
+                        "expectedContent": "{max_amount}\nEnter amount:\n0:Back"
                     },
                     {
-                        "input": "0.001",
+                        "input": "1.00",
-                        "expectedContent": "065656 will receive 0.001 from {public_key}\nPlease enter your PIN to confirm:\n0:Back\n9:Quit"
+                        "expectedContent": "065656 will receive {send_amount} from {session_id}\nPlease enter your PIN to confirm:\n0:Back\n9:Quit"
                     },
                     {
                         "input": "1222",
@@ -93,11 +93,11 @@
                     },
                     {
                         "input": "1",
-                        "expectedContent": "065656 will receive 0.001 from {public_key}\nPlease enter your PIN to confirm:\n0:Back\n9:Quit"
+                        "expectedContent": "065656 will receive {send_amount} from {session_id}\nPlease enter your PIN to confirm:\n0:Back\n9:Quit"
                     },
                     {
                         "input": "1234",
-                        "expectedContent": "Your request has been sent. 065656 will receive 0.001 from {public_key}."
+                        "expectedContent": "Your request has been sent. 065656 will receive {send_amount} from {session_id}."
                     }
                 ]
             },
@@ -106,7 +106,7 @@
                 "steps": [
                     {
                         "input": "",
-                        "expectedContent": "Balance: 0.003 CELO\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                        "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
                     },
                     {
                         "input": "4",
@@ -119,7 +119,7 @@
                 "steps": [
                     {
                         "input": "",
-                        "expectedContent": "Balance: 0.003 CELO\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                        "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
                     },
                     {
                         "input": "9",
@@ -132,7 +132,7 @@
                 "steps": [
                     {
                         "input": "",
-                        "expectedContent": "Balance: 0.003 CELO\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                        "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
                     },
                     {
                         "input": "3",

sample_tokens.json

@@ -0,0 +1,44 @@
+{
+    "ok": true,
+    "description": "Token holdings with current balances",
+    "result": {
+      "holdings": [
+        {
+          "contractAddress": "0x6CC75A06ac72eB4Db2eE22F781F5D100d8ec03ee",
+          "tokenSymbol": "FSPTST",
+          "tokenDecimals": "6",
+          "balance": "8869964242"
+        },
+        {
+          "contractAddress": "0x724F2910D790B54A39a7638282a45B1D83564fFA",
+          "tokenSymbol": "GEO",
+          "tokenDecimals": "6",
+          "balance": "9884"
+        },
+        {
+          "contractAddress": "0x2105a206B7bec31E2F90acF7385cc8F7F5f9D273",
+          "tokenSymbol": "MFNK",
+          "tokenDecimals": "6",
+          "balance": "19788697"
+        },
+        {
+          "contractAddress": "0x63DE2Ac8D1008351Cc69Fb8aCb94Ba47728a7E83",
+          "tokenSymbol": "MILO",
+          "tokenDecimals": "6",
+          "balance": "75"
+        },
+        {
+          "contractAddress": "0xd4c288865Ce0985a481Eef3be02443dF5E2e4Ea9",
+          "tokenSymbol": "SOHAIL",
+          "tokenDecimals": "6",
+          "balance": "27874115"
+        },
+        {
+          "contractAddress": "0x45d747172e77d55575c197CbA9451bC2CD8F4958",
+          "tokenSymbol": "SRF",
+          "tokenDecimals": "6",
+          "balance": "2745987"
+        }
+      ]
+    }
+  }

services/registration/account_creation.vis

@@ -1,4 +1,4 @@
-RELOAD verify_pin
+RELOAD verify_create_pin
 CATCH create_pin_mismatch flag_pin_mismatch 1
 LOAD quit 0
 HALT

services/registration/amount.vis

@@ -1,5 +1,6 @@
 LOAD reset_transaction_amount 0
 LOAD max_amount 10
+RELOAD max_amount
 MAP max_amount
 MOUT back 0
 HALT
@@ -10,5 +11,5 @@ CATCH invalid_amount flag_invalid_amount 1
 INCMP _ 0
 LOAD get_recipient 12
 LOAD get_sender 64
-LOAD get_amount 12
+LOAD get_amount 32
 INCMP transaction_pin *

services/registration/confirm_create_pin.vis

@@ -1,4 +1,4 @@
-LOAD save_pin 0
+LOAD save_temporary_pin 6
 HALT
-LOAD verify_pin 8
+LOAD verify_create_pin 8
 INCMP account_creation *

services/registration/create_pin.vis

@@ -2,8 +2,8 @@ LOAD create_account 0
 CATCH account_creation_failed flag_account_creation_failed 1
 MOUT exit 0
 HALT
-LOAD save_pin 0
+LOAD save_temporary_pin 6
-RELOAD save_pin
+RELOAD save_temporary_pin
 CATCH . flag_incorrect_pin 1
 INCMP quit 0
 INCMP confirm_create_pin *

services/registration/locale/swa/default.po

@@ -1,8 +1,8 @@
 msgid "Your account balance is %s"
 msgstr "Salio lako ni %s"
 
-msgid "Your request has been sent. %s will receive %s from %s."
+msgid "Your request has been sent. %s will receive %s %s from %s."
-msgstr "Ombi lako limetumwa. %s atapokea %s kutoka kwa %s."
+msgstr "Ombi lako limetumwa. %s atapokea %s %s kutoka kwa %s."
 
 msgid "Thank you for using Sarafu. Goodbye!"
 msgstr "Asante kwa kutumia huduma ya Sarafu. Kwaheri!"

services/registration/main.vis

@@ -1,5 +1,9 @@
+LOAD set_default_voucher 8
+RELOAD set_default_voucher
 LOAD check_balance 64
 RELOAD check_balance
+LOAD check_vouchers 10
+RELOAD check_vouchers
 CATCH api_failure  flag_api_call_error  1
 MAP check_balance
 MOUT send 1
@@ -9,7 +13,7 @@ MOUT help 4
 MOUT quit 9
 HALT
 INCMP send 1
-INCMP quit 2
+INCMP my_vouchers 2
 INCMP my_account 3
 INCMP help 4
 INCMP quit 9

services/registration/my_vouchers

@@ -0,0 +1 @@
+My vouchers

services/registration/my_vouchers.vis

@@ -0,0 +1,8 @@
+LOAD reset_account_authorized 16
+RELOAD reset_account_authorized
+MOUT select_voucher 1
+MOUT voucher_details 2
+MOUT back 0
+HALT
+INCMP _ 0
+INCMP select_voucher 1

services/registration/no_voucher

@@ -0,0 +1 @@
+You need a voucher to send

services/registration/no_voucher.vis

@@ -0,0 +1,5 @@
+MOUT back 0
+MOUT quit 9
+HALT
+INCMP ^ 0
+INCMP quit 9

services/registration/no_voucher_swa

@@ -0,0 +1 @@
+Unahitaji sarafu kutuma

services/registration/pp.csv

@@ -14,4 +14,6 @@ flag,flag_valid_pin,20,this is set when the given PIN is valid
 flag,flag_allow_update,21,this is set to allow a user to update their profile data
 flag,flag_single_edit,22,this is set to allow a user to edit a single profile item such as year of birth
 flag,flag_incorrect_date_format,23,this is set when the given year of birth is invalid
+flag,flag_incorrect_voucher,24,this is set when the selected voucher is invalid
 flag,flag_api_call_error,25,this is set when communication to an external service fails
+flag,flag_no_active_voucher,26,this is set when a user does not have an active voucher

services/registration/select_voucher

@@ -0,0 +1,2 @@
+Select number or symbol from your vouchers:
+{{.get_vouchers}}

services/registration/select_voucher.vis

@@ -0,0 +1,15 @@
+LOAD get_vouchers 0
+MAP get_vouchers
+MOUT back 0
+MOUT quit 99
+MNEXT next 11
+MPREV prev 22
+HALT
+LOAD view_voucher 80
+RELOAD view_voucher
+CATCH . flag_incorrect_voucher 1
+INCMP _ 0
+INCMP quit 99
+INCMP > 11
+INCMP < 22
+INCMP view_voucher *

services/registration/select_voucher_menu

@@ -0,0 +1 @@
+Select voucher

services/registration/select_voucher_swa

@@ -0,0 +1,2 @@
+Chagua nambari au ishara kutoka kwa salio zako:
+{{.get_vouchers}}

services/registration/send.vis

@@ -1,4 +1,5 @@
 LOAD transaction_reset 0
+CATCH no_voucher flag_no_active_voucher 1
 MOUT back 0
 HALT
 LOAD validate_recipient 20

services/registration/view_voucher

@@ -0,0 +1,2 @@
+Enter PIN to confirm selection:
+{{.view_voucher}}

services/registration/view_voucher.vis

@@ -0,0 +1,10 @@
+MAP view_voucher
+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 voucher_set *

services/registration/view_voucher_swa

@@ -0,0 +1,2 @@
+Weka PIN ili kuthibitisha chaguo:
+{{.view_voucher}}

services/registration/voucher_details_menu

@@ -0,0 +1 @@
+Voucher details

services/registration/voucher_set

@@ -0,0 +1 @@
+Success! {{.set_voucher}} is now your active voucher.

services/registration/voucher_set.vis

@@ -0,0 +1,10 @@
+LOAD reset_incorrect 6
+CATCH incorrect_pin flag_incorrect_pin 1
+CATCH _ flag_account_authorized 0
+LOAD set_voucher 12
+MAP set_voucher
+MOUT back 0
+MOUT quit 9
+HALT
+INCMP ^ 0
+INCMP quit 9

services/registration/voucher_set_swa

@@ -0,0 +1 @@
+Hongera! {{.set_voucher}} ni Sarafu inayotumika sasa.