<?php

namespace App\Http\Controllers\Api;

use App\Config\SessionTimeout;
use Symfony\Component\HttpFoundation\Response;

class SessionController extends BaseApiController
{
    public function getTimeoutConfig()
    {
        try {
            return $this->success([
                'timeout'        => SessionTimeout::TIMEOUT_DURATION,
                'warning_time'   => SessionTimeout::WARNING_THRESHOLD,
                'check_interval' => SessionTimeout::CHECK_INTERVAL,
                'logout_url'     => '/api/v1/logout',
                'keep_alive_url' => '/api/v1/session/ping',
                'check_url'      => '/api/v1/session/check',
            ], 'Timeout configuration retrieved successfully');
        } catch (\Throwable $e) {
            log_message('error', 'Timeout config error: ' . $e->getMessage());
            return $this->respondError('Failed to retrieve timeout configuration', Response::HTTP_INTERNAL_SERVER_ERROR);
        }
    }

    public function checkTimeout()
    {
        $user = $this->getCurrentUser();
        if (!$user) {
            return $this->respondError('Session expired', Response::HTTP_UNAUTHORIZED);
        }

        try {
            $session = session();
            if (!$session->has('last_activity')) {
                return $this->respondError('Session expired', Response::HTTP_UNAUTHORIZED);
            }

            $lastActivity = (int) $session->get('last_activity');
            $elapsed = time() - $lastActivity;

            if ($elapsed > SessionTimeout::TIMEOUT_DURATION) {
                $session->invalidate();
                return $this->respondError('Session expired', Response::HTTP_UNAUTHORIZED);
            }

            if ($elapsed > SessionTimeout::WARNING_THRESHOLD) {
                return $this->success([
                    'status'         => 'warning',
                    'time_remaining' => SessionTimeout::TIMEOUT_DURATION - $elapsed,
                ], 'Session warning');
            }

            return $this->success([
                'status'         => 'active',
                'time_remaining' => SessionTimeout::TIMEOUT_DURATION - $elapsed,
            ], 'Session active');
        } catch (\Throwable $e) {
            log_message('error', 'Session check error: ' . $e->getMessage());
            return $this->respondError('Failed to check session', Response::HTTP_INTERNAL_SERVER_ERROR);
        }
    }

    public function pingActivity()
    {
        $user = $this->getCurrentUser();
        if (!$user) {
            return $this->respondError('Session expired', Response::HTTP_UNAUTHORIZED);
        }

        try {
            $session = session();
            $lastActivity = (int) ($session->get('last_activity') ?? 0);

            if (!$lastActivity || (time() - $lastActivity > SessionTimeout::TIMEOUT_DURATION)) {
                $session->invalidate();
                return $this->respondError('Session expired', Response::HTTP_UNAUTHORIZED);
            }

            $session->put('last_activity', time());

            return $this->success([
                'status'         => 'active',
                'time_remaining' => SessionTimeout::TIMEOUT_DURATION,
            ], 'Session activity updated');
        } catch (\Throwable $e) {
            log_message('error', 'Session ping error: ' . $e->getMessage());
            return $this->respondError('Failed to update session activity', Response::HTTP_INTERNAL_SERVER_ERROR);
        }
    }
}