Bigcommerce API - Creating Webhooks - Invalid Header - php

Question

I'm making small steps into this project I am working on. Now creating and registering a webhook. I'm getting the below response:
400 - Invalid Header
I have tried the following code:
// Send a request to register a web hook
$http2 = new Client('https://api.bigcommerce.com', array(
'request.options' => array(
'exceptions' => false,
'headers' => array(
'X-Auth-Client' => $client_id,
'X-Auth-Token' => $access_token,
'Content-Type' => 'application/json',
'X-Custom-Auth-Header' => $access_token,
)
)
));
$request = $http2->post('/'.$store_hash.'/v2/hooks', null, array(
'scope' => 'store/order/*',
'destination' => 'https://example.com/process_order.php',
'is_active' => true
));
$response = $request->send();
$body = $response->getBody(true);
var_dump($body);
echo '<p>Status Code: ' . $response->getStatusCode() . '</p>';
... and
// Send a request to register a web hook
$http2 = new Client('https://api.bigcommerce.com', array(
'request.options' => array(
'exceptions' => false,
'headers' => array(
'X-Auth-Client' => $client_id,
'X-Auth-Token' => $access_token,
'Content-Type' => 'application/json',
)
)
));
$request = $http2->post('/'.$store_hash.'/v2/hooks', null, array(
'scope' => 'store/order/*',
'headers' => array(
'X-Custom-Auth-Header' => $access_token,
),
'destination' => 'https://example.com/process_order.php',
'is_active' => true
));
$response = $request->send();
$body = $response->getBody(true);
var_dump($body);
echo '<p>Status Code: ' . $response->getStatusCode() . '</p>';
I am working with the documentation here:
https://developer.bigcommerce.com/api/stores/v2/webhooks#create-a-hook
However, I can't seem to work out what {secret_auth_password} is as well? The documentation doesn't explain this. I am sending the Client ID and Client Header as part of the headers as well.
Still getting Invalid Header as a response.
I am using Guzzle.
Can anyone assist me on this please?

Answer 1

I have finally worked out what I did wrong after numerous attempts.
Answer: send the data in JSON format.
Resolved Code:
// Send a request to register a web hook
$http3 = new Client('https://api.bigcommerce.com', array(
'request.options' => array(
'exceptions' => false,
'headers' => array(
'X-Auth-Client' => $client_id,
'X-Auth-Token' => $access_token,
'Content-Type' => 'application/json',
'Accept' => 'application/json',
)
)
));
$request = $http3->post('/'.$store_hash.'/v2/hooks', null, json_encode(array(
'scope' => 'store/order/statusUpdated',
'destination' => 'https://example.com/process_order.php',
)));
$response = $request->send();