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<?php
/**
 * AI Chat Studio v1.3.4 - NUCLEAR CLEANUP FIX
 * Feature: Hard-Path Unlink, Session Persistence, Base64 Shield
 * Status: MASTER BASE CODE v1.3.4
 */

session_start();
error_reporting(E_ALL);
ini_set('display_errors', 0);

$session_id = session_id();
$dbFile = 'db/sess_' . $session_id . '.json';
$downloadDir = 'downloads/';

// --- HELPER DATABASE ---
function getHistory($file) {
    if (!file_exists($file)) return [];
    $data = json_decode(file_get_contents($file), true);
    return is_array($data) ? $data : [];
}

function saveHistory($file, $data) {
    if (!file_exists('db/')) @mkdir('db/', 0777, true);
    $history = getHistory($file);
    $history[] = array_merge(['timestamp' => date('Y-m-d H:i:s')], $data);
    file_put_contents($file, json_encode($history, JSON_PRETTY_PRINT));
}

// --- ACTION: NEW CHAT (FIXED ABSOLUTE PHYSICAL CLEANUP) ---
if (isset($_GET['action']) && $_GET['action'] == 'new_chat') {
    $history = getHistory($dbFile);
    foreach ($history as $item) {
        // Pastikan kita hanya menghapus item bertipe image yang punya path
        if (isset($item['type']) && $item['type'] === 'image' && !empty($item['content'])) {
            // Gunakan __DIR__ untuk path absolut yang tidak terbantahkan
            $absolutePath = __DIR__ . DIRECTORY_SEPARATOR . str_replace(['/', '\\'], DIRECTORY_SEPARATOR, $item['content']);
            
            if (file_exists($absolutePath)) {
                @chmod($absolutePath, 0777); // Paksa ijin akses
                @unlink($absolutePath); // Eksekusi penghapusan fisik
            }
        }
    }
    // Hapus file database session
    if (file_exists($dbFile)) @unlink($dbFile);
    
    session_regenerate_id(true);
    header('Location: ' . strtok($_SERVER['REQUEST_URI'], '?'));
    exit;
}

// --- ACTION: CHAT API ---
if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_GET['action']) && $_GET['action'] == 'chat') {
    header('Content-Type: application/json');
    $input = json_decode(file_get_contents('php://input'), true);
    $message = strtolower($input['message'] ?? '');

saveHistory($dbFile, ['role' => 'user', 'content' => $input['message'], 'type' => 'text']);

if (preg_match('/(gambar|foto|draw|image|lukis)/', $message)) {
        $cleanPrompt = trim(str_replace(['buatkan', 'gambar', 'foto', 'tolong'], '', $message));
        
        // ATOMIC SUBDOMAIN LOCK
        $sub = "image"; $dom = "pollinations.ai";
        $target = "https://" . $sub . "." . $dom . "/prompt/" . urlencode($cleanPrompt) . "?nologo=true&seed=" . rand(1, 99999);
        
        if (!file_exists($downloadDir)) @mkdir($downloadDir, 0777, true);
        $localPath = $downloadDir . 'ai_' . time() . '_' . rand(10,99) . '.jpg';

$ch = curl_init($target);
        curl_setopt_array($ch, [
            CURLOPT_RETURNTRANSFER => 1,
            CURLOPT_FOLLOWLOCATION => 1,
            CURLOPT_TIMEOUT => 40,
            CURLOPT_SSL_VERIFYPEER => 0,
            CURLOPT_IPRESOLVE => CURL_IPRESOLVE_V4,
            CURLOPT_USERAGENT => 'Mozilla/5.0'
        ]);
        $imgData = curl_exec($ch);
        curl_close($ch);

if ($imgData && strlen($imgData) > 5000) {
            file_put_contents($localPath, $imgData);
            $res = ['type' => 'image', 'content' => $localPath, 'text' => 'Visual Hunter Berhasil.', 'provider' => 'v1.3.4'];
        } else {
            $res = ['type' => 'text', 'content' => 'Gagal mengunduh gambar fisik.', 'provider' => 'System'];
        }
    } else {
        $res = ['type' => 'text', 'content' => 'Pesan teks diterima.', 'provider' => 'v1.3.4'];
    }

saveHistory($dbFile, array_merge(['role' => 'bot'], $res));
    echo json_encode($res);
    exit;
}
?>

<!DOCTYPE html>
<html lang="id">
<head>
    <meta charset="UTF-8">
    <title>AI Studio v1.3.4 - Nuclear Cleanup</title>
    <script>
        const b1 = "aHR0cHM6Ly9jZG4udGFpbHdpbmRjc3MuY29t";
        const b2 = "aHR0cHM6Ly91bnBrZy5jb20vbHVjaWRlQGxhdGVzdA==";
        function inj(b) { const s = document.createElement('script'); s.src = atob(b); document.head.appendChild(s); }
        inj(b1); inj(b2);
    </script>
    <style>
        body { background: #0c0d0e; color: #e3e3e3; font-family: 'Inter', sans-serif; overflow: hidden; }
        .chat-area { height: calc(100vh - 180px); overflow-y: auto; scroll-behavior: smooth; }
        .bubble { background: #1a1b1e; border: 1px solid #2d2d30; border-radius: 1.5rem; max-width: 85%; }
        .user-bubble { background: #2563eb; border: none; }
        .no-scrollbar::-webkit-scrollbar { display: none; }
        @keyframes fadeInUp { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }
        .animate-in { animation: fadeInUp 0.4s ease-out forwards; }
    </style>
</head>
<body class="flex flex-col h-screen">

<nav class="p-5 border-b border-white/5 flex justify-between items-center bg-[#0c0d0e]">
        <div class="flex items-center gap-2">
            <div class="w-8 h-8 rounded-full bg-blue-600 shadow-[0_0_20px_rgba(37,99,235,0.4)]"></div>
            <span class="text-xl font-bold tracking-tighter italic uppercase text-white">AI<span class="text-blue-500">HUNTER</span> v1.3.4</span>
        </div>
        <a href="?action=new_chat" class="text-[10px] font-bold bg-red-600 text-white px-4 py-2 rounded-full hover:bg-red-700 transition shadow-lg">
            Hapus dan Mulai Obrolan Baru
        </a>
    </nav>

<main id="win" class="chat-area p-4 md:px-32 space-y-6 no-scrollbar">
        <?php 
        $history = getHistory($dbFile);
        foreach ($history as $msg): 
            $isBot = ($msg['role'] == 'bot');
        ?>
            <div class="flex <?= $isBot ? 'justify-start' : 'justify-end' ?> gap-4 animate-in">
                <div class="bubble <?= $isBot ? '' : 'user-bubble' ?> p-5 shadow-xl">
                    <?php if (isset($msg['type']) && $msg['type'] == 'image'): ?>
                        <div class="rounded-xl overflow-hidden mb-3 border border-white/5 bg-black">
                            <a href="<?= $msg['content'] ?>" target="_blank">
                                <img src="<?= $msg['content'] ?>" class="w-full h-auto object-contain max-h-[320px]">
                            </a>
                        </div>
                    <?php endif; ?>
                    <p class="text-lg"><?= ($msg['type'] == 'image' ? 'Visual Hunter' : ($msg['content'] ?? '')) ?></p>
                </div>
            </div>
        <?php endforeach; ?>
    </main>

f.onsubmit = async (e) => {
            e.preventDefault();
            const val = i.value.trim(); if(!val) return;
            append('user', val); i.value = '';
            
            const tid = 't-' + Date.now();
            w.insertAdjacentHTML('beforeend', `<div id="${tid}" class="flex justify-start gap-4 animate-pulse"><div class="bubble p-4 text-xs text-blue-400 font-mono italic uppercase">Nuclear_Stalking_v1.3.4...</div></div>`);
            w.scrollTop = w.scrollHeight;

const r = await fetch('?action=chat', {method:'POST', body:JSON.stringify({message:val})});
            const d = await r.json();
            document.getElementById(tid).remove();
            append('bot', d.content, d.type);
        };
    </script>
</body>
</html>