Allow users to include 'CELO' in the amount

internal/handlers/ussd/menuhandler.go

@@ -4,6 +4,7 @@ import (
 	"bytes"
 	"context"
 	"fmt"
+	"regexp"
 	"strconv"
 	"strings"
 
@@ -539,9 +540,16 @@ func (h *Handlers) ValidateAmount(ctx context.Context, sym string, input []byte)
 		return res, fmt.Errorf("failed to parse balance: %v", err)
 	}
 
-    // Parse the input amount
-    if amountStr != "0" {
-        inputAmount, err := strconv.ParseFloat(amountStr, 64)
+	// Extract numeric part from input
+	re := regexp.MustCompile(`^(\d+(\.\d+)?)\s*(?:CELO)?$`)
+	matches := re.FindStringSubmatch(strings.TrimSpace(amountStr))
+	if len(matches) < 2 {
+		res.FlagSet = append(res.FlagSet, models.USERFLAG_INVALID_AMOUNT)
+		res.Content = amountStr
+		return res, nil
+	}
+
+	inputAmount, err := strconv.ParseFloat(matches[1], 64)
 	if err != nil {
 		res.FlagSet = append(res.FlagSet, models.USERFLAG_INVALID_AMOUNT)
 		res.Content = amountStr
@@ -554,20 +562,16 @@ func (h *Handlers) ValidateAmount(ctx context.Context, sym string, input []byte)
 		return res, nil
 	}
 
-        res.Content = amountStr
-        accountData["Amount"] = amountStr
+	res.Content = fmt.Sprintf("%.3f", inputAmount) // Format to 3 decimal places
+	accountData["Amount"] = res.Content
 
 	err = h.accountFileHandler.WriteAccountData(accountData)
 	if err != nil {
 		return res, err
 	}
 
-        return res, nil
-    }
-
 	return res, nil
 }
-
 func (h *Handlers) GetRecipient(ctx context.Context, sym string, input []byte) (resource.Result, error) {
 	res := resource.Result{}