<?php
// https://docs.gitea.com/usage/webhooks

// 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();
}

// success, do something
$current_date = date('d-m-y_H-i-s', time());
$log_directory = '../webhook/logs';

// create the log folder if needed
if (!file_exists($log_directory)) {
    mkdir($log_directory, 0777, true);
}

// clean the log folder if needed
if (count(scandir($log_directory)) > 10) {
    $files = scandir($log_directory);
    $log_files = array_diff($files, array('.', '..'));
    usort($files, function($a, $b) use ($log_directory) {
        return filemtime("$log_directory/$a") - filemtime("$log_directory/$b");
    });
    for ($i = 0; $i < 5; $i++) {
        unlink("$log_directory/{$files[$i]}");
    }
}

if (isset($decoded['repository'])) {
    // git hook
    echo shell_exec('bash ../webhook/webhook.sh ' . 'git' . ' >> ' . $log_directory . '/webhook_' . $current_date . '.log 2>&1');
} else {
   // directus hook
   $debounce_delay = 1 * 60;
   file_put_contents("debounce_hook", time());
   sleep($debounce_delay);

   if (time() >= intval(file_get_contents('debounce_hook')) + $debounce_delay) {

       echo shell_exec('bash ../webhook/webhook.sh ' . 'directus' . ' >> ' . $log_directory . '/webhook_' . $current_date . '.log 2>&1');
   }
}
?>