CheckActivityInstanceAccessible.php

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<?php

namespace BristolSU\Support\ActivityInstance\Middleware;

use BristolSU\Support\ActivityInstance\Contracts\ActivityInstanceResolver;
use BristolSU\Support\ActivityInstance\Exceptions\NotInActivityInstanceException;
use BristolSU\Support\Authentication\Contracts\ResourceIdGenerator;
use Illuminate\Http\Request;

class CheckActivityInstanceAccessible
{

    private $activityInstanceResolver;
    
    private $resourceIdGenerator;

    public function __construct(ActivityInstanceResolver $activityInstanceResolver, ResourceIdGenerator $resourceIdGenerator)
    {
        $this->activityInstanceResolver = $activityInstanceResolver;
        $this->resourceIdGenerator = $resourceIdGenerator;
    }

    public function handle(Request $request, \Closure $next)
    {
        $activityInstance = $this->activityInstanceResolver->getActivityInstance();
        $resourceId = $this->resourceIdGenerator->fromString($activityInstance->activity->activity_for);
        if((int) $activityInstance->resource_id !== (int) $resourceId) {
            throw new NotInActivityInstanceException('Incorrect activity instance set');
        }
        
        return $next($request);
    }
    
}