<?php

namespace Chill\ThirdPartyBundle\Repository;

use Doctrine\ORM\QueryBuilder;
use Doctrine\ORM\Query;

/**
 * ThirdPartyRepository
 *
 */
class ThirdPartyRepository extends \Doctrine\ORM\EntityRepository
{
    /**
     * count amongst parties associated to $centers, with $terms parameters
     * 
     * @param array $centers
     * @param type $terms
     * @return int
     */
    public function countByMemberOfCenters(array $centers, $terms = []): int
    {
        $qb = $this->buildQuery($centers, $terms);
        $qb->select('COUNT(tp)');
        
        return $qb->getQuery()->getSingleScalarResult();
    }
    
    /**
     * Search amongst parties associated to $centers, with $terms parameters
     * 
     * Different format for return:
     * - ['entity']: return the entity hydrated as objects
     * - ['array', [ DQL ]: return objects hydrated as entity, with 
     *   an array describing the fields as DQL.
     * 
     * supported terms:
     * 
     * - name or _default: containing the name (name LIKE %string%)
     * - is_active: is active = true / false
     * - types: an array of types
     * 
     * @param array $centers
     * @param int $firstResult
     * @param int $maxResults
     * @param array $terms
     * @param string[] $returnFormat a format for returning
     * @return array
     */
    public function findByMemberOfCenters(array $centers, $firstResult = 0, $maxResults = 20, $terms = [], $returnFormat = ['entity']): array
    {
        $qb = $this->buildQuery($centers, $terms);
        switch($returnFormat[0]) {
            case 'entity':
                $qb->select('tp');
                $hydrate = Query::HYDRATE_OBJECT;
                break;
            case 'array':
                $hydrate = Query::HYDRATE_ARRAY;
                $first = true;
                foreach ($returnFormat[1] as $dql) {
                    if ($first) {
                        $qb->select($dql);
                        $first = false;
                    } else {
                        $qb->addSelect($dql);
                    }
                }
                break;
            default:
                throw new \DomainException("This return format is invalid");
        } 
        $qb->setFirstResult($firstResult)
            ->setMaxResults($maxResults);
        
        return $qb->getQuery()->getResult();
    }
    
    protected function createMemberOfCentersQuery($centers): QueryBuilder
    {
        $qb = $this->createQueryBuilder('tp');
        
        $or = $qb->expr()->orX();
        
        foreach ($centers as $center) {
            $or->add($qb->expr()->isMemberOf(':center_'.$center->getId(), 'tp.centers'));
            $qb->setParameter('center_'.$center->getId(), $center);
        }
        
        $qb->where($or);
        
        return $qb;
    }
    
    protected function buildQuery($centers, $terms): QueryBuilder
    {
        $qb = $this->createMemberOfCentersQuery($centers);
        $this->setNameCondition($qb, $terms);
        $this->setTypesCondition($qb, $terms);
        $this->setIsActiveCondition($qb, $terms);
        
        return $qb;
    }
    
    /**
     * Add parameters to filter by containing $terms["name"] or 
     * $terms["_default"]
     * 
     * @param QueryBuilder $qb
     * @param array $terms
     */
    protected function setNameCondition(QueryBuilder $qb, array $terms)
    {
        if (\array_key_exists('name', $terms) || \array_key_exists('_default', $terms)) {
            $term = $terms['name'] ?? $terms['_default'];
            if (empty($term)) {
                return;
            }
            $qb->andWhere($qb->expr()->like('UNACCENT(LOWER(tp.name))', 'UNACCENT(LOWER(:name))'));
            $qb->setParameter('name', '%'.$term.'%');
        }
    }
    
    protected function setTypesCondition(QueryBuilder $qb, array $terms)
    {
        if (\array_key_exists('types', $terms)) {
            $orx = $qb->expr()->orX();
            foreach ($terms['types'] as $type) {
                $orx->add('JSONB_EXISTS_IN_ARRAY(tp.type, :type_'.$type.') = \'TRUE\'');
                $qb->setParameter('type_'.$type, $type);
            }
            $qb->andWhere($orx);
        }
    }
    
    protected function setIsActiveCondition(QueryBuilder $qb, array $terms)
    {
        if (\array_key_exists('is_active', $terms)) {
            $qb->andWhere(
                $terms['is_active'] ? $qb->expr()->eq('tp.active', "'TRUE'") : 
                $qb->expr()->eq('tp.active', "'FALSE'")
                );
        }
    }
}