TenantAtlas/app/Policies/WorkspacePolicy.php

<?php

namespace App\Policies;

use App\Models\User;
use App\Models\Workspace;
use App\Models\WorkspaceMembership;
use App\Services\Auth\WorkspaceCapabilityResolver;
use App\Support\Auth\Capabilities;
use Illuminate\Auth\Access\Response;

class WorkspacePolicy
{
    /**
     * Determine whether the user can view any models.
     */
    public function viewAny(User $user): bool|Response
    {
        return Response::allow();
    }

    /**
     * Determine whether the user can view the model.
     */
    public function view(User $user, Workspace $workspace): bool|Response
    {
        $isMember = WorkspaceMembership::query()
            ->where('user_id', $user->getKey())
            ->where('workspace_id', $workspace->getKey())
            ->exists();

        return $isMember ? Response::allow() : Response::denyAsNotFound();
    }

    /**
     * Determine whether the user can create models.
     */
    public function create(User $user): bool|Response
    {
        return Response::allow();
    }

    /**
     * Determine whether the user can update the model.
     */
    public function update(User $user, Workspace $workspace): bool|Response
    {
        /** @var WorkspaceCapabilityResolver $resolver */
        $resolver = app(WorkspaceCapabilityResolver::class);

        if (! $resolver->isMember($user, $workspace)) {
            return Response::denyAsNotFound();
        }

        return $resolver->can($user, $workspace, Capabilities::WORKSPACE_MANAGE)
            ? Response::allow()
            : Response::deny();
    }

    /**
     * Determine whether the user can delete the model.
     */
    public function delete(User $user, Workspace $workspace): bool
    {
        return false;
    }

    /**
     * Determine whether the user can restore the model.
     */
    public function restore(User $user, Workspace $workspace): bool
    {
        return false;
    }

    /**
     * Determine whether the user can permanently delete the model.
     */
    public function forceDelete(User $user, Workspace $workspace): bool
    {
        return false;
    }
}