<?php

// ====== SOZLAMALAR ======
$token = "8452135828:AAFuH2dSLcQGfhk1VU9WGFb8esl3ZE2nzNU";
$admin_id = 7584198265;
$api = "https://api.telegram.org/bot$token";

// ====== MA'LUMOTLAR ======
$data_file = "data.json";
if (!file_exists($data_file)) {
    file_put_contents($data_file, json_encode([
        "channels" => []
    ]));
}
$data = json_decode(file_get_contents($data_file), true);

// ====== UPDATE ======
$update = json_decode(file_get_contents("php://input"), true);
$message = $update["message"] ?? null;
if (!$message) exit;

$chat_id = $message["chat"]["id"];
$text = trim($message["text"] ?? "");

// ====== FUNKSIYALAR ======
function sendMessage($chat_id, $text) {
    global $api;
    file_get_contents($api."/sendMessage?chat_id=$chat_id&text=".urlencode($text));
}

function isJoined($user_id, $channel) {
    global $api;
    $res = json_decode(file_get_contents(
        $api."/getChatMember?chat_id=@$channel&user_id=$user_id"
    ), true);
    return isset($res["result"]["status"]) &&
           in_array($res["result"]["status"], ["member","administrator","creator"]);
}

// ====== ADMIN BUYRUQLAR ======
if ($chat_id == $admin_id) {

    if (strpos($text, "/add ") === 0) {
        $ch = str_replace("/add ", "", $text);
        $data["channels"][] = $ch;
        file_put_contents($data_file, json_encode($data));
        sendMessage($chat_id, "✅ Kanal qo‘shildi: @$ch");
        exit;
    }

    if (strpos($text, "/del ") === 0) {
        $ch = str_replace("/del ", "", $text);
        $data["channels"] = array_values(array_diff($data["channels"], [$ch]));
        file_put_contents($data_file, json_encode($data));
        sendMessage($chat_id, "❌ Kanal o‘chirildi: @$ch");
        exit;
    }

    if ($text == "/channels") {
        $list = empty($data["channels"]) ? "Yo‘q" : implode("\n@", $data["channels"]);
        sendMessage($chat_id, "📢 Kanallar:\n@".$list);
        exit;
    }
}

// ====== START ======
if ($text == "/start") {
    sendMessage($chat_id, "👋 Salom!\n\n📌 Kodni kiriting:");
    exit;
}

// ====== KOD KIRITILGANDA ======
$not_joined = [];
foreach ($data["channels"] as $ch) {
    if (!isJoined($chat_id, $ch)) {
        $not_joined[] = "@$ch";
    }
}

if (!empty($not_joined)) {
    sendMessage(
        $chat_id,
        "❗ Avval quyidagi kanallarga obuna bo‘ling:\n\n".
        implode("\n", $not_joined)
    );
} else {
    sendMessage($chat_id, "✅ Rahmat! Ruxsat berildi.");
}