Magento2.4.4 – get multiple coupons data in api

I want to retrieve multiple coupon data via the REST API. I am using it with and without a coupon

This is my code

        $subtotal = $totals->getSubTotal();
        $couponDetails = [];
        if ($quote->getAppliedRuleIds()) {
        // Get applied rules
        $ruleIds = explode(',', $quote->getAppliedRuleIds());
        $ruleIds = array_filter(array_map('trim', $ruleIds));


        if (!empty($ruleIds)) {
            $collection = $this->ruleCollectionFactory->create();
            $collection->addFieldToFilter('rule_id', ['in' => $ruleIds]);

            foreach ($collection as $rule) {
                /** @var VendorModuleModelDataCouponDetail $detail */
                $detail = $this->couponDetailFactory->create();

                $detail->setAppliedRuleId($rule->getId());
                $detail->setCouponCode($rule->getCode() ?? '');
                $detail->setCouponTitle($rule->getName());
                $detail->setCouponDescription($rule->getDescription());
                $detail->setCouponActionType($rule->getSimpleAction());

                $discountValue = 0;

                switch ($rule->getSimpleAction()) {
                    case 'by_percent':
                        $discountPercent = $rule->getDiscountAmount();
                        $discountValue = $subtotal * ($discountPercent / 100);
                        break;

                   case 'by_fixed':
                        $discountPerItem = $rule->getDiscountAmount();

                        // Get total qty from quote items (filter by conditions if needed)
                        $totalQty = 0;
                        foreach ($quote->getAllVisibleItems() as $item) {
                            $appliedRuleIds = explode(',', (string)$item->getAppliedRuleIds());
                            if (in_array($rule->getId(), $appliedRuleIds)) {
                                $totalQty += $item->getQty();
                            }
                        }

                        $discountValue = $discountPerItem * $totalQty;
                        break;

                    case 'cart_fixed':
                        $discountValue = $rule->getDiscountAmount();
                        break;

                    default:
                        $discountValue = 0;
                }

                $detail->setCouponValue(round($discountValue, 2));

                // Subtract discount for sequential rules
                $subtotal -= $discountValue;

                $couponDetails[] = $detail;
                }
            }
        }
        //end


            $extensionAttributes->setCouponDetails($couponDetails);

OUTPUT

"extension_attributes": {
            "coupon_details": [
                {
                    "applied_rule_id": "445",
                    "coupon_code": "Devi1",
                    "coupon_title": "devi1 with 1111",
                    "coupon_description": "devi1 with 1111",
                    "coupon_value": 418.95,
                    "coupon_action_type": "by_percent"
                },
                {
                    "applied_rule_id": "448",
                    "coupon_code": "",
                    "coupon_title": "Access Plus - Tier 2",
                    "coupon_description": "Discount configuration",
                    "coupon_value": 291.55,
                    "coupon_action_type": "by_percent"
                }
            ]
        }
    }

The issue is when the rule configures different types, my code does not work. Please give me any other solution to achieve this