curl --request POST \
  --url https://api.decodahealth.com/billing/payment/{payment_id}/refund-preview \
  --header 'API-KEY: <api-key>' \
  --header 'Content-Type: application/json' \
  --header 'TENANT: <tenant>' \
  --data '
{
  "items": [
    {
      "chargeItemId": "<string>",
      "quantity": 1,
      "soldPackageId": "<string>",
      "issuedGiftCardId": "<string>",
      "reversalActions": []
    }
  ],
  "refundDestination": "ORIGINAL_METHOD"
}
'

import requests

url = "https://api.decodahealth.com/billing/payment/{payment_id}/refund-preview"

payload = {
    "items": [
        {
            "chargeItemId": "<string>",
            "quantity": 1,
            "soldPackageId": "<string>",
            "issuedGiftCardId": "<string>",
            "reversalActions": []
        }
    ],
    "refundDestination": "ORIGINAL_METHOD"
}
headers = {
    "TENANT": "<tenant>",
    "API-KEY": "<api-key>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

const options = {
  method: 'POST',
  headers: {TENANT: '<tenant>', 'API-KEY': '<api-key>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    items: [
      {
        chargeItemId: '<string>',
        quantity: 1,
        soldPackageId: '<string>',
        issuedGiftCardId: '<string>',
        reversalActions: []
      }
    ],
    refundDestination: 'ORIGINAL_METHOD'
  })
};

fetch('https://api.decodahealth.com/billing/payment/{payment_id}/refund-preview', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.decodahealth.com/billing/payment/{payment_id}/refund-preview",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'items' => [
        [
                'chargeItemId' => '<string>',
                'quantity' => 1,
                'soldPackageId' => '<string>',
                'issuedGiftCardId' => '<string>',
                'reversalActions' => [
                                
                ]
        ]
    ],
    'refundDestination' => 'ORIGINAL_METHOD'
  ]),
  CURLOPT_HTTPHEADER => [
    "API-KEY: <api-key>",
    "Content-Type: application/json",
    "TENANT: <tenant>"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://api.decodahealth.com/billing/payment/{payment_id}/refund-preview"

	payload := strings.NewReader("{\n  \"items\": [\n    {\n      \"chargeItemId\": \"<string>\",\n      \"quantity\": 1,\n      \"soldPackageId\": \"<string>\",\n      \"issuedGiftCardId\": \"<string>\",\n      \"reversalActions\": []\n    }\n  ],\n  \"refundDestination\": \"ORIGINAL_METHOD\"\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("TENANT", "<tenant>")
	req.Header.Add("API-KEY", "<api-key>")
	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.post("https://api.decodahealth.com/billing/payment/{payment_id}/refund-preview")
  .header("TENANT", "<tenant>")
  .header("API-KEY", "<api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"items\": [\n    {\n      \"chargeItemId\": \"<string>\",\n      \"quantity\": 1,\n      \"soldPackageId\": \"<string>\",\n      \"issuedGiftCardId\": \"<string>\",\n      \"reversalActions\": []\n    }\n  ],\n  \"refundDestination\": \"ORIGINAL_METHOD\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.decodahealth.com/billing/payment/{payment_id}/refund-preview")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Post.new(url)
request["TENANT"] = '<tenant>'
request["API-KEY"] = '<api-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"items\": [\n    {\n      \"chargeItemId\": \"<string>\",\n      \"quantity\": 1,\n      \"soldPackageId\": \"<string>\",\n      \"issuedGiftCardId\": \"<string>\",\n      \"reversalActions\": []\n    }\n  ],\n  \"refundDestination\": \"ORIGINAL_METHOD\"\n}"

response = http.request(request)
puts response.read_body

{
  "paymentId": "<string>",
  "itemSubtotal": 123,
  "surchargeAmount": 123,
  "refundTotal": 123,
  "items": [
    {
      "chargeItemId": "<string>",
      "grossAmount": 123,
      "discountAmount": 123,
      "amount": 123,
      "taxAmount": 123,
      "refundAmount": 123,
      "quantity": 123,
      "soldPackageId": "<string>",
      "issuedGiftCardId": "<string>",
      "reversalActions": [],
      "availableReversalActions": []
    }
  ]
}

{
  "detail": [
    {
      "loc": [
        "<string>"
      ],
      "msg": "<string>",
      "type": "<string>",
      "input": "<unknown>",
      "ctx": {}
    }
  ]
}