curl --request POST \
  --url https://api-alpha.fourvenues.com/integrations/bookings/{bookingId}/external-transaction \
  --header 'Content-Type: application/json' \
  --header 'integration_id: <api-key>' \
  --header 'secret: <api-key>' \
  --header 'x-api-key: <api-key>' \
  --data '
{
  "transaction_type": "payment",
  "amount": 50,
  "method": "cash",
  "payment_method_slug": "visa",
  "description": "External payment"
}
'

import requests

url = "https://api-alpha.fourvenues.com/integrations/bookings/{bookingId}/external-transaction"

payload = {
    "transaction_type": "payment",
    "amount": 50,
    "method": "cash",
    "payment_method_slug": "visa",
    "description": "External payment"
}
headers = {
    "integration_id": "<api-key>",
    "secret": "<api-key>",
    "x-api-key": "<api-key>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {
    integration_id: '<api-key>',
    secret: '<api-key>',
    'x-api-key': '<api-key>',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({
    transaction_type: 'payment',
    amount: 50,
    method: 'cash',
    payment_method_slug: 'visa',
    description: 'External payment'
  })
};

fetch('https://api-alpha.fourvenues.com/integrations/bookings/{bookingId}/external-transaction', 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-alpha.fourvenues.com/integrations/bookings/{bookingId}/external-transaction",
  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([
    'transaction_type' => 'payment',
    'amount' => 50,
    'method' => 'cash',
    'payment_method_slug' => 'visa',
    'description' => 'External payment'
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json",
    "integration_id: <api-key>",
    "secret: <api-key>",
    "x-api-key: <api-key>"
  ],
]);

$response = curl_exec($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-alpha.fourvenues.com/integrations/bookings/{bookingId}/external-transaction"

	payload := strings.NewReader("{\n  \"transaction_type\": \"payment\",\n  \"amount\": 50,\n  \"method\": \"cash\",\n  \"payment_method_slug\": \"visa\",\n  \"description\": \"External payment\"\n}")

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

	req.Header.Add("integration_id", "<api-key>")
	req.Header.Add("secret", "<api-key>")
	req.Header.Add("x-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-alpha.fourvenues.com/integrations/bookings/{bookingId}/external-transaction")
  .header("integration_id", "<api-key>")
  .header("secret", "<api-key>")
  .header("x-api-key", "<api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"transaction_type\": \"payment\",\n  \"amount\": 50,\n  \"method\": \"cash\",\n  \"payment_method_slug\": \"visa\",\n  \"description\": \"External payment\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api-alpha.fourvenues.com/integrations/bookings/{bookingId}/external-transaction")

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

request = Net::HTTP::Post.new(url)
request["integration_id"] = '<api-key>'
request["secret"] = '<api-key>'
request["x-api-key"] = '<api-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"transaction_type\": \"payment\",\n  \"amount\": 50,\n  \"method\": \"cash\",\n  \"payment_method_slug\": \"visa\",\n  \"description\": \"External payment\"\n}"

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

{
  "success": true,
  "data": {
    "_id": "ld9o8tpo7tyld79qxdk6sgikl5i4xjpj",
    "booking_id": "gxwts76a2qpoxf2rdtxy35etfk6xyd1m",
    "transaction_type": "payment",
    "amount": 50,
    "currency": "EUR",
    "method": "cash",
    "payment_method_slug": "visa",
    "description": "External payment",
    "original_external_payment_id": null
  }
}