<?php

namespace App\Statistics\Service;

use App\Transaction\Entity\Transaction;

class StatisticsService
{

    /**
     * @return array
     * @throws \LogicException
     */
    public function getRangeOfAvailableYears(): array
    {
        $lastCreatedTransaction = $this->getDoctrine()->getManager()
            ->getRepository(Transaction::class)
            ->getLastCreatedTransaction();

        if ($lastCreatedTransaction !== null) {
            $lastResult = $lastCreatedTransaction->getCreatedAt();
            $lastEnteredYear = $lastResult->format('Y');
        } else {
            $lastEnteredYear = date('Y');
        }

        $firstCreatedTransaction = $this->getDoctrine()->getManager()
            ->getRepository(Transaction::class)
            ->getFirstCreatedTransaction();

        if ($firstCreatedTransaction !== null) {
            $firstResult = $firstCreatedTransaction->getCreatedAt();
            $firstEnteredYear = $firstResult->format('Y');
        } else {
            $firstEnteredYear = date('Y');
        }

        return [$firstEnteredYear, $lastEnteredYear];
    }

    /**
     * @return array
     */
    public function getMonthsNames(): array
    {
        $choices = [];
        for ($i = 1; $i <= 12; $i++) {
            $choices[$i] = date('F', strtotime(date('Y') . '-' . $i . '-01'));
        }
        return $choices;
    }

}