append the flag_swap_transaction once all checks pass

handlers/application/send.go

@@ -344,8 +344,6 @@ func (h *MenuHandlers) MaxAmount(ctx context.Context, sym string, input []byte)
 		return res, nil
 	}
 
-	res.FlagSet = append(res.FlagSet, flag_swap_transaction)
-
 	// Resolve active pool address
 	activePoolAddress, err := h.resolveActivePoolAddress(ctx, sessionId)
 	if err != nil {
@@ -380,8 +378,11 @@ func (h *MenuHandlers) MaxAmount(ctx context.Context, sym string, input []byte)
 	// retrieve the max credit send amounts
 	maxSAT, maxRAT, err := h.calculateSendCreditLimits(ctx, activePoolAddress, activeAddress, recipientActiveAddress, publicKey, activeDecimal, recipientActiveDecimal)
 	if err != nil {
-		res.FlagSet = append(res.FlagSet, flag_api_call_error)
+		// if an error (such as Swap rates not found for the speficied pool and tokens), fall back to a normal transaction
 		logg.ErrorCtxf(ctx, "failed on calculateSendCreditLimits", "error", err)
+		res.FlagReset = append(res.FlagReset, flag_swap_transaction)
+		res.Content = l.Get("Maximum amount: %s %s\nEnter amount:", formattedBalance, string(activeSym))
+
 		return res, nil
 	}
 
@@ -413,6 +414,9 @@ func (h *MenuHandlers) MaxAmount(ctx context.Context, sym string, input []byte)
 		return res, err
 	}
 
+	// only set the flag once all checks pass
+	res.FlagSet = append(res.FlagSet, flag_swap_transaction)
+
 	res.Content = l.Get(
 		"Credit Available: %s %s\n(You can swap up to %s %s -> %s %s).\nEnter %s amount:",
 		maxRAT,

services/registration/credit_amount.vis

@@ -11,7 +11,6 @@ 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
 CATCH invalid_amount flag_invalid_amount 1
 INCMP _ 0
 LOAD get_recipient 0