<?php

namespace App\Controller;

use App\Entity\ShiftSchedule;

use Doctrine\ORM\Query;
use Doctrine\ORM\QueryBuilder;
use Doctrine\ORM\EntityManagerInterface;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\Validator\Validator\ValidatorInterface;
use Symfony\Bundle\FrameworkBundle\Controller\Controller;

use Sensio\Bundle\FrameworkExtraBundle\Configuration\ParamConverter;

use Catalyst\MenuBundle\Annotation\Menu;

use DateTime;

class ShiftScheduleController extends Controller
{
    /**
     * @Menu(selected="shift_schedule_list")
     */
    public function index()
    {
        $this->denyAccessUnlessGranted('shift_schedule.list', null, 'No access.');

        return $this->render('shift-schedule/list.html.twig');
    }

    public function rows(Request $req)
    {
        $this->denyAccessUnlessGranted('shift_schedule.list', null, 'No access.');

        // get query builder
        $qb = $this->getDoctrine()
                ->getRepository(ShiftSchedule::class)
                ->createQueryBuilder('q');

        // get datatable params
        $datatable = $req->request->get('datatable');

        // count total records
        $tquery = $qb->select('COUNT(q)');
        $this->setQueryFilters($datatable, $tquery);
        $total = $tquery->getQuery()
            ->getSingleScalarResult();

        // get current page number
        $page = $datatable['pagination']['page'] ?? 1;

        $perpage = $datatable['pagination']['perpage'];
        $offset = ($page - 1) * $perpage;

        // add metadata
        $meta = [
            'page' => $page,
            'perpage' => $perpage,
            'pages' => ceil($total / $perpage),
            'total' => $total,
            'sort' => 'asc',
            'field' => 'id'
        ];

        // build query
        $query = $qb->select('q');
        $this->setQueryFilters($datatable, $query);

        // check if sorting is present, otherwise use default
        if (isset($datatable['sort']['field']) && !empty($datatable['sort']['field'])) {
            $order = $datatable['sort']['sort'] ?? 'asc';
            $query->orderBy('q.' . $datatable['sort']['field'], $order);
        } else {
            $query->orderBy('q.id', 'asc');
        }

        // get rows for this page
        $obj_rows = $query->setFirstResult($offset)
            ->setMaxResults($perpage)
            ->getQuery()
            ->getResult();

        // process rows
        $rows = [];
        foreach ($obj_rows as $orow) {
            // add row data
            $shifts = $orow->getHourShifts();
            $hour_shifts = [];
            foreach ($shifts as $shift)
            {
                // convert to DateTime then format
                $shift_start = DateTime::createFromFormat('H:i', $shift['start']);
                $shift_end = DateTime::createFromFormat('H:i', $shift['end']);

                $hour_shifts[] = [
                    $shift_start->format('g:i A') . ' - ' . $shift_end->format('g:i A')
                ];
            }

            $row['id'] = $orow->getID();
            $row['name'] = $orow->getName();
            $row['start_time'] = $orow->getStartTime()->format('g:i A');
            $row['end_time'] = $orow->getEndtime()->format('g:i A');
            $row['hour_shifts'] = $hour_shifts;

            // add row metadata
            $row['meta'] = [
                'update_url' => '',
                'delete_url' => ''
            ];

            // add crud urls
            if ($this->isGranted('shift_schedule.update'))
                $row['meta']['update_url'] = $this->generateUrl('shift_schedule_update', ['id' => $row['id']]);
            if ($this->isGranted('shift_schedule.delete'))
                $row['meta']['delete_url'] = $this->generateUrl('shift_schedule_delete', ['id' => $row['id']]);

            $rows[] = $row;
        }

        // response
        return $this->json([
            'meta' => $meta,
            'data' => $rows
        ]);
    }

    /**
     * @Menu(selected="shift_schedule_list")
     */
    public function addForm()
    {
        $this->denyAccessUnlessGranted('shift_schedule.add', null, 'No access.');

        $params = [];
        $params['obj'] = new ShiftSchedule();
        $params['mode'] = 'create';
        $params['shift_entries'] = [];

        // response
        return $this->render('shift-schedule/form.html.twig', $params);
    }

    public function addSubmit(Request $req, EntityManagerInterface $em, ValidatorInterface $validator)
    {
        $this->denyAccessUnlessGranted('shift_schedule.add', null, 'No access.');

        $obj = new ShiftSchedule();

        // set and save values
        $this->setObject($obj, $em, $req);

        // validate
        $errors = $validator->validate($obj);

        // initialize error list
        $error_array = [];

        // add errors to list
        foreach ($errors as $error) {
            $error_array[$error->getPropertyPath()] = $error->getMessage();
        }

        // check if any errors were found
        if (!empty($error_array)) {
            // return validation failure response
            return $this->json([
                'success' => false,
                'errors' => $error_array
            ], 422);
        }

        // validated! save the entity
        $em->persist($obj);
        $em->flush();

        // return successful response
        return $this->json([
            'success' => 'Changes have been saved!'
        ]);
    }

    /**
     * @Menu(selected="shift_schedule_list")
     */
    public function updateForm($id, EntityManagerInterface $em)
    {
        $this->denyAccessUnlessGranted('shift_schedule.update', null, 'No access.');

        $params = [];

        // find shift schedule
        $obj = $em->getRepository(ShiftSchedule::class)->find($id);

        // make sure this row exists
        if (empty($obj))
            throw $this->createNotFoundException('The item does not exist');

        // get the shift entries
        $shifts = $obj->getHourShifts();
        $hour_shifts = [];
        foreach ($shifts as $shift)
        {
            // convert to DateTime then format
            $shift_start = DateTime::createFromFormat('H:i', $shift['start']);
            $shift_end = DateTime::createFromFormat('H:i', $shift['end']);

            $hour_shifts[] = [
                'start' => $shift_start,
                'end' => $shift_end
            ];
        }

        $params['obj'] = $obj;
        $params['mode'] = 'update';
        $params['shift_entries'] = $hour_shifts;

        // response
        return $this->render('shift-schedule/form.html.twig', $params);
    }

    public function updateSubmit(Request $req, EntityManagerInterface $em, ValidatorInterface $validator, $id)
    {
        $this->denyAccessUnlessGranted('shift_schedule.update', null, 'No access.');

        // get object
        $obj = $em->getRepository(ShiftSchedule::class)->find($id);

        // make sure this object exists
        if (empty($obj))
            throw $this->createNotFoundException('The item does not exist');

        $this->setObject($obj, $em, $req);

        // validate
        $errors = $validator->validate($obj);

        // initialize error list
        $error_array = [];

        // add errors to list
        foreach ($errors as $error) {
            $error_array[$error->getPropertyPath()] = $error->getMessage();
        }

        // check if any errors were found
        if (!empty($error_array)) {
            // return validation failure response
            return $this->json([
                'success' => false,
                'errors' => $error_array
            ], 422);
        }

        // validated! save the entity
        $em->flush();

        // return successful response
        return $this->json([
            'success' => 'Changes have been saved!'
        ]);
    }

    protected function setQueryFilters($datatable, QueryBuilder $query)
    {
        if (isset($datatable['query']['data-rows-search']) && !empty($datatable['query']['data-rows-search'])) {
            $query->where('q.name LIKE :filter')
                ->setParameter('filter', '%' . $datatable['query']['data-rows-search'] . '%');
        }
    }

    protected function setObject(ShiftSchedule $obj, EntityManagerInterface $em, Request $req)
    {
        $name = $req->request->get('name');

        // times
        $format = 'h:i A';
        $start_time = DateTime::createFromFormat($format, $req->request->get('start_time'));
        $end_time = DateTime::createFromFormat($format, $req->request->get('end_time'));

        // get the shift entries
        $shift_start = $req->request->get('shift_start_time');
        $shift_end = $req->request->get('shift_end_time');

        $shifts = [];
        for ($i = 0; $i < count($shift_start); $i++)
        {
            // convert to DateTime so that we can reformat to 00-23 format
            $s_start = DateTime::createFromFormat($format, $shift_start[$i]);
            $e_start = DateTime::createFromFormat($format, $shift_end[$i]);

            $start = $s_start->format('H:00');
            $end = $e_start->format('H:00');

            $shifts[] = [
                'start' => $start,
                'end' => $end
            ];
        }

        $obj->setName($name)
            ->setStartTime($start_time)
            ->setEndTime($end_time)
            ->setHourShifts($shifts);
    }

}