function sendInlineKeyboard($chatId, $text, $keyboard, $token) {
    $url = "https://api.telegram.org/bot$token/sendMessage";
    $postData = [
        'chat_id' => $chatId,
        'text' => $text,
        'reply_markup' => json_encode($keyboard),
        'parse_mode' => 'Markdown',
        'disable_web_page_preview' => true,
    ];

    sendRequest($url, $postData);
}

function sendMessage($chatId, $text, $token) {
    $url = "https://api.telegram.org/bot$token/sendMessage";
    $postData = [
        'chat_id' => $chatId,
        'text' => $text,
        'parse_mode' => 'Markdown',
        'disable_web_page_preview' => true,
    ];

    sendRequest($url, $postData);
}

function deleteMessage($chatId, $messageId, $token) {
    $url = "https://api.telegram.org/bot$token/deleteMessage";
    $postData = [
        'chat_id' => $chatId,
        'message_id' => $messageId,
    ];

    sendRequest($url, $postData);
}

function muteUser($chatId, $userId, $token) {
    $url = "https://api.telegram.org/bot$token/restrictChatMember";
    $postData = [
        'chat_id' => $chatId,
        'user_id' => $userId,
        'permissions' => json_encode([
            'can_send_messages' => false,
            'can_send_media_messages' => false,
            'can_send_polls' => false,
            'can_send_other_messages' => false,
            'can_add_web_page_previews' => false,
        ]),
    ];

    sendRequest($url, $postData);
}

function unmuteUser($chatId, $userId, $token) {
    $url = "https://api.telegram.org/bot$token/restrictChatMember";
    $postData = [
        'chat_id' => $chatId,
        'user_id' => $userId,
        'permissions' => json_encode([
            'can_send_messages' => true,
            'can_send_media_messages' => true,
            'can_send_polls' => true,
            'can_send_other_messages' => true,
            'can_add_web_page_previews' => true,
        ]),
    ];

    sendRequest($url, $postData);
}

function banUser($chatId, $userId, $token) {
    $url = "https://api.telegram.org/bot$token/kickChatMember";
    $postData = [
        'chat_id' => $chatId,
        'user_id' => $userId,
    ];

    sendRequest($url, $postData);
}

function unbanUser($chatId, $userId, $token) {
    $url = "https://api.telegram.org/bot$token/unbanChatMember";
    $postData = [
        'chat_id' => $chatId,
        'user_id' => $userId,
    ];

    sendRequest($url, $postData);
}

function isUserAdmin($chatId, $userId, $token) {
    $url = "https://api.telegram.org/bot$token/getChatAdministrators?chat_id=$chatId";
    $response = file_get_contents($url);
    $admins = json_decode($response, true)['result'] ?? [];

    foreach ($admins as $admin) {
        if ($admin['user']['id'] == $userId) {
            return true;
        }
    }

    return false;
}

function getUserInfo($chatId, $userId, $token) {
    $url = "https://api.telegram.org/bot$token/getChatMember?chat_id=$chatId&user_id=$userId";
    $response = file_get_contents($url);
    $user = json_decode($response, true)['result']['user'] ?? null;

    return $user;
}

function formatUserInfo($user) {
    $userId = $user['id'];
    $firstName = $user['first_name'];
    $lastName = $user['last_name'] ?? '';
    $username = $user['username'] ?? 'N/A';

    return "🧑 *User Info:*\n" .
           "ID: `$userId`\n" .
           "Name: `$firstName $lastName`\n" .
           "Username: @$username\n";
}

function sendRequest($url, $postData) {
    $options = [
        'http' => [
            'header' => "Content-type: application/x-www-form-urlencoded\r\n",
            'method' => 'POST',
            'content' => http_build_query($postData),
        ],
    ];

    $context = stream_context_create($options);
    file_get_contents($url, false, $context);
}

function editMessageText($chatId, $messageId, $text, $token) {
    $url = "https://api.telegram.org/bot$token/editMessageText";
    $postData = [
        'chat_id' => $chatId,
        'message_id' => $messageId,
        'text' => $text,
        'parse_mode' => 'Markdown',
        'disable_web_page_preview' => true,
    ];

    sendRequest($url, $postData);
}
?>