check whether any of the users vouchers are stables or set a flag

.env.example

@@ -37,3 +37,6 @@ MAX_MPESA_SEND_AMOUNT=250000
 DEFAULT_MPESA_ASSET=cUSD
 MPESA_BEARER_TOKEN=eyJeSIsInRcCI6IkpXVCJ.yJwdWJsaWNLZXkiOiIwrrrrrr
 MPESA_ONRAMP_BASE=https://pretium.v1.grassecon.net
+
+# Stable vouchers allowed for Pay Debt (USDT, USDm)
+STABLE_VOUCHER_ADDRESSES=0x48065fbBE25f71C9282ddf5e1cD6D6A887483D5e,0x765DE816845861e75A25fCA122bb6898B8B1282a

config/config.go

@@ -114,3 +114,22 @@ func MaxMpesaSendAmount() float64 {
 func DefaultMpesaAsset() string {
 	return env.GetEnv("DEFAULT_MPESA_ASSET", "")
 }
+
+func StableVoucherAddresses() []string {
+	var parsed []string
+
+	raw := env.GetEnv("STABLE_VOUCHER_ADDRESSES", "")
+	if raw == "" {
+		return parsed
+	}
+
+	list := strings.Split(raw, ",")
+	for _, addr := range list {
+		clean := strings.ToLower(strings.TrimSpace(addr))
+		if clean != "" {
+			parsed = append(parsed, clean)
+		}
+	}
+
+	return parsed
+}

handlers/application/balance.go

@@ -119,86 +119,85 @@ func (h *MenuHandlers) CalculateCreditAndDebt(ctx context.Context, sym string, i
 	l.AddDomain("default")
 
 	flag_api_call_error, _ := h.flagManager.GetFlag("flag_api_call_error")
+	flag_no_pay_debt_vouchers, _ := h.flagManager.GetFlag("flag_no_pay_debt_vouchers")
 
-	// set the default flag set/reset and content
+	// default response
 	res.FlagReset = append(res.FlagReset, flag_api_call_error)
 	res.Content = l.Get("Credit: %s KSH\nDebt: %s KSH\n", "0", "0")
 
 	// Fetch session data
 	_, _, activeSym, _, publicKey, _, err := h.getSessionData(ctx, sessionId)
 	if err != nil {
-		// return if the user does not have an active voucher
 		return res, nil
 	}
 
-	// Get active pool address and symbol or fall back to default
+	// Resolve active pool
 	activePoolAddress, _, err := h.resolveActivePoolDetails(ctx, sessionId)
 	if err != nil {
 		return res, err
 	}
 
-	// call the api using the activePoolAddress to get a list of SwapToSymbolsData
+	// Fetch swappable vouchers
 	swappableVouchers, err := h.accountService.GetPoolSwappableFromVouchers(ctx, string(activePoolAddress), string(publicKey))
 	if err != nil {
 		logg.ErrorCtxf(ctx, "failed on GetPoolSwappableFromVouchers", "error", err)
 		return res, nil
 	}
 
-	logg.InfoCtxf(ctx, "GetPoolSwappableFromVouchers", "swappable vouchers", swappableVouchers)
-
-	// Return if there are no vouchers
 	if len(swappableVouchers) == 0 {
 		return res, nil
 	}
 
-	// Filter out the active voucher from swappableVouchers
+	// Filter stable vouchers (excluding active voucher)
-	filteredSwappableVouchers := make([]dataserviceapi.TokenHoldings, 0, len(swappableVouchers))
+	filteredSwappableVouchers := make([]dataserviceapi.TokenHoldings, 0)
-	for _, s := range swappableVouchers {
+	for _, v := range swappableVouchers {
-		if s.TokenSymbol != string(activeSym) {
+		if v.TokenSymbol == string(activeSym) {
-			filteredSwappableVouchers = append(filteredSwappableVouchers, s)
+			continue
+		}
+		if isStableVoucher(v.TokenAddress) {
+			filteredSwappableVouchers = append(filteredSwappableVouchers, v)
 		}
 	}
 
-	// Store as filtered swap to list data (excluding the current active voucher) for future reference
+	// No stable vouchers → cannot pay debt
+	if len(filteredSwappableVouchers) == 0 {
+		res.FlagSet = append(res.FlagSet, flag_no_pay_debt_vouchers)
+		return res, nil
+	}
+
+	res.FlagReset = append(res.FlagReset, flag_no_pay_debt_vouchers)
+
+	// Process stable vouchers for later use
 	data := store.ProcessVouchers(filteredSwappableVouchers)
 
-	logg.InfoCtxf(ctx, "ProcessVouchers", "data", data)
+	// Find active voucher data
-
-	// Find the matching voucher data
 	activeSymStr := string(activeSym)
 	var activeData *dataserviceapi.TokenHoldings
-	for _, voucher := range swappableVouchers {
+	for _, v := range swappableVouchers {
-		if voucher.TokenSymbol == activeSymStr {
+		if v.TokenSymbol == activeSymStr {
-			activeData = &voucher
+			activeData = &v
 			break
 		}
 	}
 
 	if activeData == nil {
-		logg.InfoCtxf(ctx, "activeSym not found in vouchers, returning 0", "activeSym", activeSymStr)
 		return res, nil
 	}
 
-	// Scale down the active balance (credit)
+	// Credit = active voucher balance
-	// Max swappable value from pool using the active token
+	scaledCredit := store.ScaleDownBalance(
-	scaledCredit := store.ScaleDownBalance(activeData.Balance, activeData.TokenDecimals)
+		activeData.Balance,
+		activeData.TokenDecimals,
+	)
 
-	// Calculate total debt (sum of other vouchers)
+	// Debt = sum of stable vouchers only
 	scaledDebt := "0"
-
+	for _, v := range filteredSwappableVouchers {
-	for _, voucher := range swappableVouchers {
+		scaled := store.ScaleDownBalance(v.Balance, v.TokenDecimals)
-		// Skip the active token
-		if voucher.TokenSymbol == activeSymStr {
-			continue
-		}
-
-		scaled := store.ScaleDownBalance(voucher.Balance, voucher.TokenDecimals)
-
-		// Add scaled balances (decimal-safe)
 		scaledDebt = store.AddDecimalStrings(scaledDebt, scaled)
 	}
 
-	// call the mpesa rates API to get the rates
+	// Fetch MPESA rates
 	rates, err := h.accountService.GetMpesaOnrampRates(ctx)
 	if err != nil {
 		res.FlagSet = append(res.FlagSet, flag_api_call_error)
@@ -208,13 +207,15 @@ func (h *MenuHandlers) CalculateCreditAndDebt(ctx context.Context, sym string, i
 	}
 
 	creditFloat, _ := strconv.ParseFloat(scaledCredit, 64)
-	creditksh := fmt.Sprintf("%f", creditFloat*rates.Buy)
-	kshFormattedCredit, _ := store.TruncateDecimalString(creditksh, 0)
-
 	debtFloat, _ := strconv.ParseFloat(scaledDebt, 64)
-	debtksh := fmt.Sprintf("%f", debtFloat*rates.Buy)
-	kshFormattedDebt, _ := store.TruncateDecimalString(debtksh, 0)
 
+	creditKsh := fmt.Sprintf("%f", creditFloat*rates.Buy)
+	debtKsh := fmt.Sprintf("%f", debtFloat*rates.Buy)
+
+	kshFormattedCredit, _ := store.TruncateDecimalString(creditKsh, 0)
+	kshFormattedDebt, _ := store.TruncateDecimalString(debtKsh, 0)
+
+	// Persist swap data
 	dataMap := map[storedb.DataTyp]string{
 		storedb.DATA_POOL_TO_SYMBOLS:   data.Symbols,
 		storedb.DATA_POOL_TO_BALANCES:  data.Balances,
@@ -222,7 +223,6 @@ func (h *MenuHandlers) CalculateCreditAndDebt(ctx context.Context, sym string, i
 		storedb.DATA_POOL_TO_ADDRESSES: data.Addresses,
 	}
 
-	// Write data entries
 	for key, value := range dataMap {
 		if err := userStore.WriteEntry(ctx, sessionId, key, []byte(value)); err != nil {
 			logg.ErrorCtxf(ctx, "Failed to write data entry for sessionId: %s", sessionId, "key", key, "error", err)
@@ -230,7 +230,11 @@ func (h *MenuHandlers) CalculateCreditAndDebt(ctx context.Context, sym string, i
 		}
 	}
 
-	res.Content = l.Get("Credit: %s KSH\nDebt: %s KSH\n", kshFormattedCredit, kshFormattedDebt)
+	res.Content = l.Get(
+		"Credit: %s KSH\nDebt: %s KSH\n",
+		kshFormattedCredit,
+		kshFormattedDebt,
+	)
 
 	return res, nil
 }

handlers/application/paydebt.go

@@ -4,8 +4,10 @@ import (
 	"context"
 	"fmt"
 	"strconv"
+	"strings"
 
 	"git.defalsify.org/vise.git/resource"
+	"git.grassecon.net/grassrootseconomics/sarafu-vise/config"
 	"git.grassecon.net/grassrootseconomics/sarafu-vise/store"
 	storedb "git.grassecon.net/grassrootseconomics/sarafu-vise/store/db"
 	"gopkg.in/leonelquinteros/gotext.v1"
@@ -265,3 +267,13 @@ func (h *MenuHandlers) InitiatePayDebt(ctx context.Context, sym string, input []
 	res.FlagReset = append(res.FlagReset, flag_account_authorized)
 	return res, nil
 }
+
+func isStableVoucher(tokenAddress string) bool {
+	addr := strings.ToLower(strings.TrimSpace(tokenAddress))
+	for _, stable := range config.StableVoucherAddresses() {
+		if addr == stable {
+			return true
+		}
+	}
+	return false
+}

services/registration/no_stable_voucher

@@ -0,0 +1 @@
+No stable voucher found

services/registration/no_stable_voucher.vis

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

services/registration/no_stable_voucher_swa

@@ -0,0 +1 @@
+Hakuna sarafu thabiti iliyopatikana

services/registration/pay_debt.vis

@@ -1,4 +1,5 @@
 CATCH no_voucher flag_no_active_voucher 1
+CATCH no_stable_voucher flag_no_pay_debt_vouchers 1
 LOAD calculate_max_pay_debt 0
 RELOAD calculate_max_pay_debt
 MAP calculate_max_pay_debt

services/registration/pp.csv

@@ -36,3 +36,4 @@ 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
+flag,flag_no_pay_debt_vouchers,46,this is set when the user does not have a stable voucher to pay debt