API for Sending Letters via Swiss Post

import json
import requests

url_file_upload = 'https://api.v2.pingen.com/file-upload'
url_letters = 'https://api.v2.pingen.com/organisations/YOUR_ORGANISATION_UUID/letters'
access_token = 'INSERT_YOUR_ACCESS_TOKEN_HERE'

response = requests.get(url_file_upload, headers = { 
    'Authorization': 'Bearer {}'.format(access_token),
})
data = json.loads(response.text)['data']
file_url = data['attributes']['url']
file_url_signature = data['attributes']['url_signature']

file = open('path_to_your_file.pdf', 'rb')
requests.put(file_url, data=file)
file.close()

payload = {
    'data': {
         'type': 'letters',
         'attributes': {
              'file_original_name': 'your_filename.pdf',
              'file_url': file_url,
              'file_url_signature': file_url_signature,
              'address_position': 'left',
              'auto_send': False
         }
    }
}
requests.post(
    url_letters,
    json.dumps(payload),
    headers = {
         'Content-Type': 'application/vnd.api+json',
         'Authorization': 'Bearer {}'.format(access_token)
    })

$accessToken = 'INSERT_YOUR_ACCESS_TOKEN_HERE';
$organisationUuid = 'YOUR_ORGANISATION_UUID';
$filePath = 'path_to_your_file.pdf';
$fileName = 'your_filename.pdf';

$ch = curl_init();

curl_setopt($ch, CURLOPT_URL, "https://api.pingen.com/file-upload");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_HTTPHEADER, ["Authorization: Bearer $accessToken"]);

$response = curl_exec($ch);
curl_close($ch);

$responseData = json_decode($response, true);
$fileUploadUrl = $responseData['data']['attributes']['url'];
$fileUrlSignature = $responseData['data']['attributes']['url_signature'];

$ch = curl_init();

curl_setopt($ch, CURLOPT_URL, $fileUploadUrl);
curl_setopt($ch, CURLOPT_PUT, 1);
curl_setopt($ch, CURLOPT_INFILE, fopen($filePath, 'r'));
curl_setopt($ch, CURLOPT_INFILESIZE, filesize($filePath));

$response = curl_exec($ch);
curl_close($ch);

$letterData = [
   'data' => [
       'type' => 'letters',
       'attributes' => [
           'file_original_name' => $fileName,
           'file_url' => $fileUploadUrl,
           'file_url_signature' => $fileUrlSignature,
           'address_position' => 'left',
           'auto_send' => false,
           'delivery_product' => 'fast',
           'print_mode' => 'simplex',
           'print_spectrum' => 'color'
       ]
   ]
];

$ch = curl_init();

curl_setopt($ch, CURLOPT_URL, "https://api.pingen.com/organisations/$organisationUuid/letters");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($letterData));
curl_setopt($ch, CURLOPT_HTTPHEADER, [
   "Content-Type: application/vnd.api+json",
   "Authorization: Bearer $accessToken"
]);

$response = curl_exec($ch);
curl_close($ch);

echo $response;