<?php

declare(strict_types=1);

namespace App\Filament\Concerns;

use App\Models\ManagedEnvironment;
use App\Support\OperateHub\OperateHubShell;
use Filament\Facades\Filament;
use Illuminate\Http\Request;
use RuntimeException;

trait ResolvesPanelTenantContext
{
    protected static function resolveTenantContextForCurrentPanel(): ?ManagedEnvironment
    {
        $request = request();

        if (static::currentPanelId($request) === 'admin') {
            $tenant = app(OperateHubShell::class)->tenantOwnedPanelContext(request());

            return $tenant instanceof ManagedEnvironment ? $tenant : null;
        }

        $tenant = ManagedEnvironment::current();

        return $tenant instanceof ManagedEnvironment ? $tenant : null;
    }

    public static function panelTenantContext(): ?ManagedEnvironment
    {
        return static::resolveTenantContextForCurrentPanel();
    }

    public static function trustedPanelTenantContext(): ?ManagedEnvironment
    {
        return static::panelTenantContext();
    }

    protected static function resolveTenantContextForCurrentPanelOrFail(): ManagedEnvironment
    {
        $tenant = static::resolveTenantContextForCurrentPanel();

        if (! $tenant instanceof ManagedEnvironment) {
            throw new RuntimeException('No tenant context selected.');
        }

        return $tenant;
    }

    protected static function resolveTrustedPanelTenantContextOrFail(): ManagedEnvironment
    {
        return static::resolveTenantContextForCurrentPanelOrFail();
    }

    private static function currentPanelId(mixed $request): ?string
    {
        $panelId = Filament::getCurrentPanel()?->getId();

        if (is_string($panelId) && $panelId !== '') {
            return $panelId;
        }

        $routeName = is_object($request) && method_exists($request, 'route')
            ? $request->route()?->getName()
            : null;

        if (is_string($routeName) && $routeName !== '') {
            if (str_contains($routeName, '.admin.')) {
                return 'admin';
            }

            if (str_contains($routeName, '.system.')) {
                return 'system';
            }
        }

        $path = is_object($request) && method_exists($request, 'path')
            ? '/'.ltrim((string) $request->path(), '/')
            : null;

        $panelId = static::panelIdFromPath($path);

        if ($panelId !== null) {
            return $panelId;
        }

        if (! $request instanceof Request || ! static::isLivewireRequest($request, $path)) {
            return null;
        }

        $refererPath = parse_url((string) $request->headers->get('referer', ''), PHP_URL_PATH);
        if (! is_string($refererPath) || $refererPath === '') {
            return null;
        }

        return static::panelIdFromPath('/'.ltrim($refererPath, '/'));
    }

    private static function panelIdFromPath(?string $path): ?string
    {
        if (! is_string($path) || $path === '') {
            return null;
        }

        return match (true) {
            $path === '/admin', str_starts_with($path, '/admin/') => 'admin',
            $path === '/system', str_starts_with($path, '/system/') => 'system',
            default => null,
        };
    }

    private static function isLivewireRequest(Request $request, ?string $path): bool
    {
        return $request->headers->has('x-livewire')
            || (is_string($path) && preg_match('#^/(?:livewire(?:-[^/]+)?/update|livewire-unit-test-endpoint)(?:/|$)#', $path) === 1);
    }
}