<?php
include('config.php');

// check for POST request
if ($_SERVER['REQUEST_METHOD'] != 'POST') {
    error_log('FAILED - not POST - '. $_SERVER['REQUEST_METHOD']);
    exit();
}

// get content type
$content_type = isset($_SERVER['CONTENT_TYPE']) ? strtolower(trim($_SERVER['CONTENT_TYPE'])) : '';

if ($content_type != 'application/json') {
    error_log('FAILED - not application/json - '. $content_type);
    exit();
}

// get payload
$payload = trim(file_get_contents("php://input"));

if (empty($payload)) {
    error_log('FAILED - no payload');
    exit();
}

// convert json to array
$decoded = json_decode($payload, true);

// check for json decode errors
if (json_last_error() !== JSON_ERROR_NONE) {
    error_log('FAILED - json decode - '. json_last_error());
    exit();
}

if($decoded['secret'] != $secret_key['pr']) {
    echo("WRONG SECRET");
    error_log('FAILED - wrong secret key');
    exit();
}

file_put_contents("log.txt", print_r($decoded, true));

$subject = "Pull request: " . $decoded['pull_request']['title'] . " by " . $decoded['pull_request']['user']['login'];
$message = $decoded['sender']['login'] 
           . " has " . 
           ($decoded['pull_request']['merged'] ? "merged" : $decoded['action'])
           . " pull request #" .
           $decoded['pull_request']['number']
           . " for " .
           $decoded['repository']['full_name']
           . ".\n" .
           $decoded['pull_request']['html_url'];


foreach($recipients['pr'] as $recp) {
  mail($recp, $subject, $message, $from);
}
echo("SENT");
// success, do something
?>