<?php

namespace App\Controller\CustomerAppAPI;

use Symfony\Component\HttpFoundation\Request;
use Catalyst\ApiBundle\Component\Response as ApiResponse;

use App\Entity\Partner;
use App\Entity\Review;

class PartnerController extends ApiController
{
    public function getPartnerInformation(Request $req, $pid)
    {
        // validate params
        $validity = $this->validateRequest($req);

        if (!$validity['is_valid']) {
            return new ApiResponse(false, $validity['error']);
        }

        // get partner
        $partner = $this->em->getRepository(Partner::class)->findOneBy(['id' => $pid]);
        if ($partner == null) {
            return new ApiResponse(false, 'No partner found.');
        }

        // get reviews for partner
        $reviews = $this->em->getRepository(Review::class)->findBy(['partner' => $partner]);

        // get average rating for all reviews
        $average_rating = 0;
        if (!empty($reviews)) {
            $rating = 0;
            foreach ($reviews as $review) {
                $rating = $rating + $review->getRating();
            }

            $average_rating = $rating / sizeof($reviews);
        }

        $data = [];
        $data['partner'] = [
            'id' => $partner->getID(),
            'name' => $partner->getName(),
            'branch' => $partner->getBranch(),
            'address' => $partner->getAddress(),
            'contact_nums' => $partner->getContactNumbers(),
            'time_open' => $partner->getTimeOpen()->format("g:i A"),
            'time_close' => $partner->getTimeClose()->format("g:i A"),
            'longitude' => $partner->getCoordinates()->getLongitude(),
            'latitude' => $partner->getCoordinates()->getLatitude(),
            'average_rating' => $average_rating,
        ];
        
        // response
        return new ApiResponse(true, '', $data);
    }

    public function getClosestPartners(Request $req)
    {
        // validate params
        $validity = $this->validateRequest($req, [
            'longitude',
            'latitude',
            'service_id',
            'limit',
        ]);

        if (!$validity['is_valid']) {
            return new ApiResponse(false, $validity['error']);
        }

        $long = $req->query->get('longitude');
        $lat = $req->query->get('latitude');
        $service_id = $req->query->get('service_id');
        $limit = $req->query->get('limit');

        // get partners within range
        $query = $this->em->createQuery('SELECT p, st_distance(p.coordinates, point(:lng, :lat)) as dist FROM App\Entity\Partner p
                JOIN App\Entity\Service s where s.id = :service_id ORDER BY dist')
            ->setParameter('lat', $lat)
            ->setParameter('lng', $long)
            ->setParameter('service_id', $service_id);

        $query->setMaxResults($limit);
        $result = $query->getResult();

        $data = [];
        $partners = [];
        foreach ($result as $row) {
            // get all the reviews for each partner and average the ratings
            $partner_id = $row[0]->getID();
            $partner = $this->em->getRepository(Partner::class)->find($partner_id);
            $partner_reviews = $this->em->getRepository(Review::class)->findBy(['partner' => $partner]);

            $average_rating = 0;
            if (count($partner_reviews) > 0) {
                $rating = 0;
                foreach ($partner_reviews as $review) {
                    $rating = $rating + $review->getRating();
                }

                $average_rating = $rating / sizeof($partner_reviews);
            }

            $partners[] =  [
                'id' => $row[0]->getID(),
                'name' => $row[0]->getName(),
                'branch' => $row[0]->getBranch(),
                'address' => $row[0]->getAddress(),
                'contact_nums' => $row[0]->getContactNumbers(),
                'time_open' => $row[0]->getTimeOpen()->format("g:i A"),
                'time_close' => $row[0]->getTimeClose()->format("g:i A"),
                'longitude' => $row[0]->getCoordinates()->getLongitude(),
                'latitude' => $row[0]->getCoordinates()->getLatitude(),
                'db_distance' => $row['dist'],
                'rating' => $average_rating,
            ];
        }

        $data['partners'] = $partners;

        // response
        return new ApiResponse(true, '', $data);
    }

    public function reviewPartner($pid, Request $req)
    {
        // validate params
        $validity = $this->validateRequest($req, [
            'rating',
            'message',
        ]);

        if (!$validity['is_valid']) {
            return new ApiResponse(false, $validity['error']);
        }

        $rating = $req->request->get('rating');
        $msg = $req->request->get('message');

        // TODO: check rating if 1 - 5

        // check if partner exists
        $partner = $this->em->getRepository(Partner::class)->find($pid);
        if ($partner == null) {
            return new ApiResponse(false, 'No partner found.');
        }

        $rev = new Review();
        $rev->setRating($rating)
            ->setMessage($msg)
            ->setPartner($partner)
            ->setCustomerSession($this->session); // NOTE: using new customer session entity

        // save to db
        $this->em->persist($rev);
        $this->em->flush();

        // response
        return new ApiResponse();
    }
}