<?php

namespace App\Http\Middleware;

use Closure;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Auth;
use Symfony\Component\HttpFoundation\Response;
use Throwable;

class MaintenanceMiddleware
{
    public function handle(Request $request, Closure $next): Response
    {
        $isPostRequest = $request->method() === 'POST';
        $isMaintenanceRequest = $request->is('maintenance');
        $maintenanceEnabled = $this->getMaintenanceEnabled();
        $isPreview = $request->query('preview') === '1';
        $minRank = $this->getMinMaintenanceRank();

        $fortify2faRoutes = [
            'two-factor.login',
            'two-factor.confirm',
        ];

        if ($maintenanceEnabled && $isPostRequest && ! Auth::check()) {
            return $next($request);
        }

        $route = $request->route();
        $routeName = $route?->getName();
        $isFortify2faRoute = in_array($routeName, $fortify2faRoutes, true);

        if ($maintenanceEnabled && $isFortify2faRoute) {
            return $next($request);
        }

        $isStaff = Auth::check() && Auth::user()->rank >= $minRank;

        if ($isStaff) {
            if ($isMaintenanceRequest && ! $isPreview) {
                return to_route('me.show');
            }

            return $next($request);
        }

        if ($maintenanceEnabled && ! $isMaintenanceRequest && ! $isPostRequest) {
            return to_route('maintenance.show');
        }

        if (! $maintenanceEnabled && $isMaintenanceRequest && ! $isPostRequest && ! $isPreview) {
            return to_route('welcome');
        }

        return $next($request);
    }

    private function getMaintenanceEnabled(): bool
    {
        try {
            return (bool) setting('maintenance_enabled');
        } catch (Throwable) {
            return false;
        }
    }

    private function getMinMaintenanceRank(): int
    {
        try {
            return (int) setting('min_maintenance_login_rank', 1);
        } catch (Throwable) {
            return 1;
        }
    }
}