cakephp and Webhooks - php

Question

Im new to cakephp and have implemented the Webshop Solution Snipcart. When an order is processed by snipcart they send a webhook to our site. The webhook looks like this according to their documentation:
{
eventName: "order:completed",
mode: "Live",
createdOn: "2013-07-04T04:18:44.5538768Z",
content: {
token: "22808196-0eff-4a6e-b136-3e4d628b3cf5",
creationDate: "2013-07-03T19:08:28.993Z",
modificationDate: "2013-07-04T04:18:42.73Z",
status: "Processed",
paymentMethod: "CreditCard",
email: "customer#snipcart.com",
cardHolderName: "Nicolas Cage",
billingAddressName: "Nicolas Cage",
billingAddressCompanyName: "Company name",
billingAddressAddress1: "888 The street",
billingAddressAddress2: "",
billingAddressCity: "Québec",
billingAddressCountry: "CA",
billingAddressProvince: "QC",
billingAddressPostalCode: "G1G 1G1",
billingAddressPhone: "[phone]",
shippingAddressName: "Nicolas Cage",
shippingAddressCompanyName: "Company name",
shippingAddressAddress1: "888 The street",
shippingAddressAddress2: "",
shippingAddressCity: "Québec",
shippingAddressCountry: "CA",
shippingAddressProvince: "QC",
shippingAddressPostalCode: "G1G 1G1",
shippingAddressPhone: "[phone]",
shippingAddressSameAsBilling: true,
finalGrandTotal: 310.00,
shippingAddressComplete: true,
creditCardLast4Digits: "4242",
shippingFees: 10.00,
shippingMethod: "Livraison",
items: [{
uniqueId: "eb4c9dae-e725-4dad-b7ae-a5e48097c831",
token: "22808196-0eff-4a6e-b136-3e4d628b3cf5",
id: "1",
name: "Movie",
price: 300.00,
originalPrice: 300.00,
quantity: 1,
url: "https://snipcart.com",
weight: 10.00,
description: "Something",
image: "http://placecage.com/50/50",
customFieldsJson: "[]",
stackable: true,
maxQuantity: null,
totalPrice: 300.0000,
totalWeight: 10.00
}],
subtotal: 610.0000,
totalWeight: 20.00,
hasPromocode: false,
promocodes: [],
willBePaidLater: false
}
}
And the consume the webhooks looks like this:
<?php
$json = file_get_contents('php://input');
$body = json_decode($json, true);
if (is_null($body) or !isset($body['eventName'])) {
// When something goes wrong, return an invalid status code
// such as 400 BadRequest.
header('HTTP/1.1 400 Bad Request');
return;
}
switch ($body['eventName']) {
case 'order:completed':
// This is an order:completed event
// do what needs to be done here.
break;
}
// Return a valid status code such as 200 OK.
header('HTTP/1.1 200 OK');
My question is, how do I do this in CakePHP version 2.4. I've been looking for days now on the internet for a solution, but tho i'm inexperienced I can't find a proper solution.
Solved it:
public function webhooks(){
//check if POST
if ($this->request->is('post')) {
//Allow raw POST's
$url = 'php://input';
//decode
$json = json_decode(file_get_contents($url), true);
if (is_null($json) or !isset($json['eventName'])) {
// When something goes wrong, return an invalid status code
// such as 400 BadRequest.
header('HTTP/1.1 400 Bad Request');
return;
}
//do whatever needs to be done, in this case remove the quantity ordered from the stock in db.
switch ($json['eventName']) {
case 'order:completed':
$id = $json['content']['items'][0]['id'];
$quantity = $json['content']['items'][0]['quantity'];
$query = $this->Shop->findById($id, 'Shop.stock');
$stock = $query['Shop']['stock'];
$stock = $stock - $quantity;
$this->Shop->updateAll(array('Shop.stock' => $stock), array('Shop.id' => $id));
break;
}
header('HTTP/1.1 200 OK');
}
}

Answer 1

the only thing I would add to your answer is a few more "cake" ways of doing some things.
public function webhooks(){
//check if POST
if ($this->request->is('post') || $this->request->is('put')) {
//Allow raw POST's
$url = 'php://input';
//decode
$json = json_decode(file_get_contents($url), true);
if (empty($json) or empty($json['eventName'])) {
throw new BadRequestException('Invalid JSON Information');
}
//do whatever needs to be done, in this case remove the quantity ordered from the stock in db.
switch ($json['eventName']) {
case 'order:completed':
$id = $json['content']['items'][0]['id'];
$quantity = $json['content']['items'][0]['quantity'];
$shop = $this->Shop->find('first', array(
'conditions' => array(
'Shop.id' => $id,
),
'fields' => array(
'Shop.stock',
),
));
if (empty($shop)) {
throw new NotFoundException(__('Invalid Shop Content'));
}
$stock = $shop['Shop']['stock'];
$stock = $stock - $quantity;
$this->Shop->id = $id;
$this->Shop->saveField('stock', $stock);
break;
}