<?php
require_once __DIR__ . '/../core/security.php';
$pdo    = require __DIR__ . '/../core/db.php';
require_once __DIR__ . '/../models/Paste.php';
$config = require __DIR__ . '/../config/config.php';

if ($_SERVER['REQUEST_METHOD'] !== 'POST') {
    header('Location: /');
    exit;
}

$text     = trim($_POST['text'] ?? '');
$password = $_POST['password'] ?? '';
$expire   = isset($_POST['expire']) ? (int)$_POST['expire'] : 0;

if ($text === '') {
    jsonResponse(['success' => false, 'message' => 'Text cannot be empty.'], 422);
}

$id            = generateId();
$enc           = encryptText($text, $config['app']['master_key']);
$password_hash = $password !== '' ? password_hash($password, PASSWORD_DEFAULT) : null;
$expire_time   = $expire > 0 ? time() + $expire : null;

$paste = new Paste($pdo);
$paste->save($id, $enc['cipher'], $enc['iv'], $expire_time, $password_hash);

$base = rtrim($config['app']['base_url'] ?: ('http' . (isset($_SERVER['HTTPS']) ? 's' : '') . '://' . $_SERVER['HTTP_HOST']), '/');
$url  = $base . '/view/' . $id;

jsonResponse(['success' => true, 'url' => $url]);