curl --request POST \
  --url https://api.paycashless.com/v1/invoices/{id}/cancel \
  --header 'Content-Type: application/json' \
  --header 'Request-Signature: <request-signature>' \
  --header 'Request-Timestamp: <request-timestamp>' \
  --data '
{
  "cancellationReason": "<string>"
}
'

import requests

url = "https://api.paycashless.com/v1/invoices/{id}/cancel"

payload = { "cancellationReason": "<string>" }
headers = {
    "Request-Signature": "<request-signature>",
    "Request-Timestamp": "<request-timestamp>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {
    'Request-Signature': '<request-signature>',
    'Request-Timestamp': '<request-timestamp>',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({cancellationReason: '<string>'})
};

fetch('https://api.paycashless.com/v1/invoices/{id}/cancel', 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.paycashless.com/v1/invoices/{id}/cancel",
  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([
    'cancellationReason' => '<string>'
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json",
    "Request-Signature: <request-signature>",
    "Request-Timestamp: <request-timestamp>"
  ],
]);

$response = curl_exec($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.paycashless.com/v1/invoices/{id}/cancel"

	payload := strings.NewReader("{\n  \"cancellationReason\": \"<string>\"\n}")

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

	req.Header.Add("Request-Signature", "<request-signature>")
	req.Header.Add("Request-Timestamp", "<request-timestamp>")
	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.paycashless.com/v1/invoices/{id}/cancel")
  .header("Request-Signature", "<request-signature>")
  .header("Request-Timestamp", "<request-timestamp>")
  .header("Content-Type", "application/json")
  .body("{\n  \"cancellationReason\": \"<string>\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.paycashless.com/v1/invoices/{id}/cancel")

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

request = Net::HTTP::Post.new(url)
request["Request-Signature"] = '<request-signature>'
request["Request-Timestamp"] = '<request-timestamp>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"cancellationReason\": \"<string>\"\n}"

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

{
  "id": "<string>",
  "status": "draft",
  "description": "<string>",
  "currency": "NGN",
  "maxInstallments": 123,
  "number": "<string>",
  "reference": "<string>",
  "acceptPartialPayments": true,
  "amountDue": 123,
  "amountPaid": 123,
  "amountOverpaid": 123,
  "amountRemaining": 123,
  "subTotal": 123,
  "customerId": "<string>",
  "sendEmail": true,
  "totalInclusiveTaxAmount": 123,
  "totalExclusiveTaxAmount": 123,
  "cancellationReason": "<string>",
  "taxRateIds": [
    "<string>"
  ],
  "logo": "<string>",
  "invoicePdf": "<string>",
  "receiptPdf": "<string>",
  "callbackUrl": "<string>",
  "returnUrl": "<string>",
  "metadata": {},
  "daysUntilDue": 123,
  "dueDate": "2023-11-07T05:31:56Z",
  "paidAt": "2023-11-07T05:31:56Z",
  "cancelledAt": "2023-11-07T05:31:56Z",
  "liveMode": true
}