AppStateESS/homestead

<?php

namespace Homestead\Command;

use \Homestead\Term;
use \Homestead\CommandFactory;
use \Homestead\StudentFactory;
use \Homestead\RoomChangeRequestFactory;
use \Homestead\RoomChangeParticipantFactory;
use \Homestead\RoomChangeRequestStudentApprovalView;
use \Homestead\UserStatus;
use \Homestead\ParticipantStateNew;
use \Homestead\NotificationView;

/**
 * Controller class for showing the interface where a student
 * can approve a pending room change request.
 *
 * @author Jeremy Booker
 * @package homestead
 */
class ShowRoomChangeRequestApprovalCommand extends Command {

    public function getRequestVars()
    {
        return array('action' => 'ShowRoomChangeRequestApproval');
    }

    public function execute(CommandContext $context)
    {
        $term = Term::getCurrentTerm();

        $student = StudentFactory::getStudentByUsername(UserStatus::getUsername(), $term);
        $request = RoomChangeRequestFactory::getPendingByStudent($student, $term);
        $participants = RoomChangeParticipantFactory::getParticipantsByRequest($request);
        $thisParticipant = RoomChangeParticipantFactory::getParticipantByRequestStudent($request, $student);

        // If this particpant is not in the New state, then it must have already been approved or there's a problem
        // So redirect back to the main menu
        if (!$thisParticipant->getState() instanceof ParticipantStateNew) {
            \NQ::simple('hms', NotificationView::ERROR, 'You cannot approve that room change request.');
            $cmd = CommandFactory::getCommand('ShowStudentMenu');
            $cmd->redirect();
        }

        $view = new RoomChangeRequestStudentApprovalView($student, $request, $participants, $thisParticipant, $term);

        $context->setContent($view->show());
    }
}