<?php

$config = require __DIR__ . '/config.php';

$title = trim($_POST['title'] ?? '');
$message = trim($_POST['message'] ?? '');
$type = $_POST['type'] ?? 'info';

$allowedTypes = [
    'info',
    'warning',
    'danger'
];

if (
    empty($title) ||
    empty($message) ||
    !in_array($type, $allowedTypes, true)
) {
    header(
        'Location: index.php?status=error&message=' .
        urlencode('Ungültige Eingaben.')
    );
    exit;
}

$payload = [
    'type' => $type,
    'title' => $title,
    'message' => $message
];

$ch = curl_init();

curl_setopt_array($ch, [
    CURLOPT_URL => $config['push_url'],
    CURLOPT_POST => true,
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_HTTPHEADER => [
        'Authorization: Bearer ' . $config['api_key'],
        'Content-Type: application/json'
    ],
    CURLOPT_POSTFIELDS => json_encode($payload),
    CURLOPT_TIMEOUT => 15
]);

$response = curl_exec($ch);
$httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);

if (curl_errno($ch)) {

    $error = curl_error($ch);

    curl_close($ch);

    header(
        'Location: index.php?status=error&message=' .
        urlencode('cURL Fehler: ' . $error)
    );
    exit;
}

curl_close($ch);

if ($httpCode >= 200 && $httpCode < 300) {

    header(
        'Location: index.php?status=success&message=' .
        urlencode('Push Notification erfolgreich versendet.')
    );
    exit;
}

header(
    'Location: index.php?status=error&message=' .
    urlencode(
        'Server antwortete mit HTTP ' .
        $httpCode .
        ': ' .
        $response
    )
);
exit;