<?php

namespace App\Service;

use Doctrine\ORM\EntityManagerInterface;

use CrEOF\Spatial\PHP\Types\Geometry\Point;

use App\Entity\PriceTier;

class PriceTierManager
{
    protected $em;

    public function __construct(EntityManagerInterface $em)
    {
        $this->em = $em;
    }

    public function getItemPrice($pt_id, $item_type_id, $item_id)
    {
        // find the item price, given the price tier, battery id, and item type (battery)
        $db_conn = $this->em->getConnection();

        $ip_sql = 'SELECT ip.price AS price 
            FROM item_price ip
            WHERE ip.price_tier_id = :pt_id
            AND ip.item_type_id = :it_id
            AND ip.item_id = :item_id';

        $ip_stmt = $db_conn->prepare($ip_sql);
        $ip_stmt->bindValue('pt_id', $pt_id);
        $ip_stmt->bindValue('it_id', $item_type_id);
        $ip_stmt->bindValue('item_id', $item_id);

        $ip_result = $ip_stmt->executeQuery();

        // results found
        $actual_price = null;

        // go through rows
        while ($row = $ip_result->fetchAssociative())
        {
            // get the price
            $price = $row['price'];

            // actual price
            $actual_price = number_format($price / 100, 2, '.', '');
        }

        return $actual_price;
    }

    public function getPriceTier(Point $coordinates)
    {
        $price_tier_id = 0;

        if ($coordinates != null)
        {
            $long = $coordinates->getLongitude();
            $lat = $coordinates->getLatitude();

            // get location's price tier, given a set of coordinates
            $query = $this->em->createQuery('SELECT s from App\Entity\SupportedArea s where st_contains(s.coverage_area, point(:long, :lat)) = true');
            $area = $query->setParameter('long', $long)
                    ->setParameter('lat', $lat)
                    ->setMaxResults(1)
                    ->getOneOrNullResult();

            if ($area != null)
            {
                $price_tier = $area->getPriceTier();
                if ($price_tier != null)
                    $price_tier_id = $price_tier->getID();            
            }
        }

        return $price_tier_id;
    }
}