<?php namespace RVR\Repository;

use Container;
use Generator;
use RVR\PersistentData\Model\Community;
use RVR\PersistentData\Model\Currency;
use RVR\PersistentData\Model\Event;
use RVR\PersistentData\Model\Transaction;
use RVR\PersistentData\Model\User;
use SokoWeb\Database\Query\Select;

class TransactionRepository
{
    public function getById(int $id): ?Transaction
    {
        return Container::$persistentDataManager->selectFromDbById($id, Transaction::class);
    }

    public function getAllByCommunity(Community $community, bool $useRelations = false, array $withRelations = []): Generator
    {
        $select = $this->selectAllByCommunity($community);

        yield from Container::$persistentDataManager->selectMultipleFromDb($select, Transaction::class, $useRelations, $withRelations);
    }

    public function getAllByEvent(Event $event, bool $useRelations = false, array $withRelations = []): Generator
    {
        $select = $this->selectAllByEvent($event);

        yield from Container::$persistentDataManager->selectMultipleFromDb($select, Transaction::class, $useRelations, $withRelations);
    }

    public function countAllByCommunity(Community $community): int
    {
        return $this->selectAllByCommunity($community)->count();
    }

    public function countAllByEvent(Event $event): int
    {
        return $this->selectAllByEvent($event)->count();
    }

    public function isAnyForUser(User $user): bool
    {
        $select = new Select(Container::$dbConnection, Transaction::getTable());
        $select->where('payer_user_id', '=', $user->getId());
        $select->orWhere('payee_user_id', '=', $user->getId());
        $select->orWhere('payee_user_id', '=', null);

        return $select->count() > 0;
    }

    public function isAnyCommon(): bool
    {
        $select = new Select(Container::$dbConnection, Transaction::getTable());
        $select->where('payee_user_id', '=', null);

        return $select->count() > 0;
    }

    public function isAnyForCurrency(Currency $currency): bool
    {
        $select = new Select(Container::$dbConnection, Transaction::getTable());
        $select->where('currency_id', '=', $currency->getId());

        return $select->count() > 0;
    }

    public function getPagedByCommunity(Community $community, int $page, int $itemsPerPage, bool $useRelations = false, array $withRelations = []): Generator
    {
        $select = $this->selectAllByCommunity($community);
        $select->orderBy('time', 'DESC');
        $select->paginate($page, $itemsPerPage);

        yield from Container::$persistentDataManager->selectMultipleFromDb($select, Transaction::class, $useRelations, $withRelations);
    }

    public function getPagedByEvent(Event $event, int $page, int $itemsPerPage, bool $useRelations = false, array $withRelations = []): Generator
    {
        $select = $this->selectAllByEvent($event);
        $select->orderBy('time', 'DESC');
        $select->paginate($page, $itemsPerPage);

        yield from Container::$persistentDataManager->selectMultipleFromDb($select, Transaction::class, $useRelations, $withRelations);
    }

    private function selectAllByCommunity(Community $community)
    {
        $select = new Select(Container::$dbConnection, Transaction::getTable());
        $select->where('community_id', '=', $community->getId());
        return $select;
    }

    private function selectAllByEvent(Event $event)
    {
        $select = new Select(Container::$dbConnection, Transaction::getTable());
        $select->where('event_id', '=', $event->getId());
        return $select;
    }
}