TenantAtlas/app/Support/OperateHub/OperateHubShell.php

<?php

declare(strict_types=1);

namespace App\Support\OperateHub;

use App\Filament\Pages\TenantDashboard;
use App\Models\Tenant;
use App\Models\User;
use App\Services\Auth\CapabilityResolver;
use App\Services\Tenants\TenantOperabilityService;
use App\Support\Tenants\TenantPageCategory;
use App\Support\Workspaces\WorkspaceContext;
use Filament\Actions\Action;
use Filament\Facades\Filament;
use Illuminate\Http\Request;

final class OperateHubShell
{
    public function __construct(
        private WorkspaceContext $workspaceContext,
        private CapabilityResolver $capabilityResolver,
        private TenantOperabilityService $tenantOperabilityService,
    ) {}

    public function scopeLabel(?Request $request = null): string
    {
        $activeTenant = $this->activeEntitledTenant($request);

        if ($activeTenant instanceof Tenant) {
            return 'Tenant scope: '.$activeTenant->name;
        }

        return 'All tenants';
    }

    /**
     * @return array{label: string, url: string}|null
     */
    public function returnAffordance(?Request $request = null): ?array
    {
        $activeTenant = $this->activeEntitledTenant($request);

        if ($activeTenant instanceof Tenant) {
            return [
                'label' => 'Back to '.$activeTenant->name,
                'url' => TenantDashboard::getUrl(panel: 'tenant', tenant: $activeTenant),
            ];
        }

        return null;
    }

    /**
     * @return array<Action>
     */
    public function headerActions(
        string $scopeActionName = 'operate_hub_scope',
        string $returnActionName = 'operate_hub_return',
        ?Request $request = null,
    ): array {
        $actions = [
            Action::make($scopeActionName)
                ->label($this->scopeLabel($request))
                ->color('gray')
                ->disabled(),
        ];

        $returnAffordance = $this->returnAffordance($request);

        if (is_array($returnAffordance)) {
            $actions[] = Action::make($returnActionName)
                ->label($returnAffordance['label'])
                ->icon('heroicon-o-arrow-left')
                ->color('gray')
                ->url($returnAffordance['url']);
        }

        return $actions;
    }

    public function activeEntitledTenant(?Request $request = null): ?Tenant
    {
        return $this->resolveActiveTenant($request);
    }

    private function resolveActiveTenant(?Request $request = null): ?Tenant
    {
        $pageCategory = $this->pageCategory($request);
        $routeTenant = $this->resolveRouteTenant($request, $pageCategory);

        if ($routeTenant instanceof Tenant) {
            return $routeTenant;
        }

        $tenant = $this->resolveValidatedFilamentTenant($request, $pageCategory);

        if ($tenant instanceof Tenant) {
            return $tenant;
        }

        if ($pageCategory === TenantPageCategory::TenantBound) {
            return null;
        }

        $rememberedTenant = $this->workspaceContext->rememberedTenant($request);

        if (! $rememberedTenant instanceof Tenant) {
            return null;
        }

        if (! $this->isEntitled($rememberedTenant, $request, TenantPageCategory::WorkspaceScoped)) {
            $this->workspaceContext->clearRememberedTenantContext($request);

            return null;
        }

        return $rememberedTenant;
    }

    private function resolveValidatedFilamentTenant(?Request $request = null, ?TenantPageCategory $pageCategory = null): ?Tenant
    {
        $tenant = Filament::getTenant();

        if (! $tenant instanceof Tenant) {
            return null;
        }

        $pageCategory ??= $this->pageCategory($request);

        if ($this->isEntitled($tenant, $request, $pageCategory)) {
            return $tenant;
        }

        Filament::setTenant(null, true);

        return null;
    }

    private function resolveRouteTenant(?Request $request = null, ?TenantPageCategory $pageCategory = null): ?Tenant
    {
        $route = $request?->route();
        $pageCategory ??= $this->pageCategory($request);

        if ($route?->hasParameter('tenant')) {
            $tenant = $this->resolveTenantRouteParameter($route->parameter('tenant'));

            if (! $tenant instanceof Tenant || ! $this->isEntitled($tenant, $request, $pageCategory)) {
                return null;
            }

            return $tenant;
        }

        if (
            $pageCategory !== TenantPageCategory::TenantBound
            || ! $route?->hasParameter('record')
            || ! str_starts_with((string) ($route->getName() ?? ''), 'filament.admin.resources.tenants.')
        ) {
            return null;
        }

        $tenant = $this->resolveTenantRouteParameter($route->parameter('record'));

        if (! $tenant instanceof Tenant || ! $this->isEntitled($tenant, $request, $pageCategory)) {
            return null;
        }

        return $tenant;
    }

    private function resolveTenantRouteParameter(mixed $routeTenant): ?Tenant
    {
        if ($routeTenant instanceof Tenant) {
            return $routeTenant;
        }

        $routeTenant = trim((string) $routeTenant);

        if ($routeTenant === '') {
            return null;
        }

        return Tenant::query()
            ->withTrashed()
            ->where(static function ($query) use ($routeTenant): void {
                $query->where('external_id', $routeTenant);

                if (ctype_digit($routeTenant)) {
                    $query->orWhereKey((int) $routeTenant);
                }
            })
            ->first();
    }

    private function isEntitled(Tenant $tenant, ?Request $request = null, ?TenantPageCategory $pageCategory = null): bool
    {
        $user = auth()->user();

        if (! $user instanceof User) {
            return false;
        }

        $workspaceId = $this->workspaceContext->currentWorkspaceId($request);

        if ($workspaceId !== null && (int) $tenant->workspace_id !== (int) $workspaceId) {
            return false;
        }

        if (! $this->capabilityResolver->isMember($user, $tenant)) {
            return false;
        }

        $decision = $this->tenantOperabilityService->decisionFor($tenant);
        $pageCategory ??= TenantPageCategory::fromRequest($request);

        return match ($pageCategory) {
            TenantPageCategory::TenantBound => $decision->canViewTenantSurface,
            default => $decision->canSelectAsContext,
        };
    }

    private function pageCategory(?Request $request = null): TenantPageCategory
    {
        return TenantPageCategory::fromRequest($request);
    }
}