<?php
declare(strict_types=1);

namespace MageSail\Magesail\Controller\Adminhtml\Tunnel;

use Magento\Backend\App\Action;
use Magento\Backend\App\Action\Context;
use Magento\Framework\App\Config\ScopeConfigInterface;
use Magento\Framework\Controller\ResultFactory;
use MageSail\Magesail\Model\MagesailLog;
use MageSail\Magesail\Model\TunnelManager;
use MageSail\Magesail\Model\TunnelStatus;

class Index extends Action
{
    public function __construct(
        Context $context,
        private readonly ScopeConfigInterface $scopeConfig,
        private readonly TunnelManager $tunnelManager,
        private readonly TunnelStatus $tunnelStatus,
        private readonly MagesailLog $magesailLog
    ) {
        parent::__construct($context);
    }

    public function execute()
    {
        $action = $this->getRequest()->getParam('action');
        $isRunning = $this->tunnelStatus->isRunning();

        if ($action === 'start') {
            if ($isRunning) {
                $this->messageManager->addErrorMessage(__('Tunnel is already running.'));
                return $this->_redirect('*/*/index');
            }
            $secure = (bool) $this->scopeConfig->getValue('magesail/settings/mode');
            $port = $this->scopeConfig->getValue('magesail/settings/port') ?: 80;
            $port = filter_var($port, FILTER_VALIDATE_INT);
            if (!$port || !\in_array($port, [80, 443], true)) {
                $this->messageManager->addErrorMessage(__('Invalid port. Must be 80 or 443.'));
                return $this->_redirect('*/*/index');
            }
            $result = $this->tunnelManager->start((int) $port, $secure);
            if ($result['ok']) {
                $this->magesailLog->add(sprintf('Tunnel started PID %s port %s', $result['pid'], $port));
                $this->messageManager->addSuccessMessage(__(
                    'Tunnel started (PID: %1). Key will appear once ready. Logs: %2',
                    $result['pid'],
                    $this->tunnelStatus->getLogFilePath()
                ));
            } else {
                $msg = match ($result['error'] ?? '') {
                    'already_running' => __('Tunnel is already running.'),
                    'invalid_port' => __('Invalid port. Must be 80 or 443.'),
                    'pid_capture_failed' => __('Failed to capture PID: %1', $result['detail'] ?? ''),
                    default => __('Error starting tunnel: %1', $result['error'] ?? 'unknown'),
                };
                $this->messageManager->addErrorMessage($msg);
                $this->magesailLog->add('Start failed: ' . ($result['error'] ?? 'unknown'));
            }
        } elseif ($action === 'stop') {
            $stop = $this->tunnelManager->stop();
            if ($stop['ok']) {
                $this->magesailLog->add('Tunnel stopped');
                $this->messageManager->addSuccessMessage(__('Tunnel stopped.'));
            } else {
                if (($stop['error'] ?? '') === 'not_running') {
                    $this->messageManager->addNoticeMessage(__('No tunnel running.'));
                } else {
                    $this->messageManager->addErrorMessage(__('Error stopping tunnel: %1', $stop['error'] ?? ''));
                }
            }
        }

        $resultPage = $this->resultFactory->create(ResultFactory::TYPE_PAGE);
        $resultPage->setActiveMenu('MageSail_Magesail::tunnel');
        $resultPage->getConfig()->getTitle()->prepend(__('Holesail Tunnel'));
        return $resultPage;
    }

    protected function _isAllowed()
    {
        return $this->_authorization->isAllowed('MageSail_Magesail::tunnel');
    }
}