<?php

namespace App\Telegram\Middleware;

use App\Telegram\TelegramBotContext;
use Illuminate\Support\Facades\Log;
use SergiX44\Nutgram\Nutgram;
use SergiX44\Nutgram\Telegram\Properties\ChatType;

/**
 * Allow only the configured owner group/supergroup for the current bot context
 * (official system chat or the active agent's chat_id).
 */
class AuthorizedChat
{
    public function __construct(
        private readonly TelegramBotContext $context,
    ) {}

    public function __invoke(Nutgram $bot, callable $next): mixed
    {
        $expected = $this->context->expectedChatId();
        if ($expected === '') {
            Log::warning('telegram AuthorizedChat: chat id empty', [
                'agent_id' => $this->context->agent()?->id,
            ]);

            return null;
        }

        $chatId = $bot->chatId();
        if ($chatId === null || (string) $chatId !== $expected) {
            Log::info('telegram AuthorizedChat: chat rejected', [
                'chat_id' => $chatId,
                'expected' => $expected,
                'agent_id' => $this->context->agent()?->id,
            ]);

            return null;
        }

        $type = $bot->chat()?->type;
        $typeValue = $type instanceof ChatType ? $type->value : (string) $type;
        if (! in_array($typeValue, [ChatType::GROUP->value, ChatType::SUPERGROUP->value, 'group', 'supergroup'], true)) {
            Log::info('telegram AuthorizedChat: not a group chat', [
                'chat_id' => $chatId,
                'type' => $typeValue,
            ]);

            return null;
        }

        return $next($bot);
    }
}