<?php


namespace App\Vacancies;


use App\Base\Service;
use App\Vacancies\Models\Vacancy;
use Carbon\Carbon;

final class VacancyService extends Service
{

    /**
     * Base query for get Vacancy from DB
     *
     * @return \Illuminate\Database\Eloquent\Relations\BelongsToMany
     */
    private function baseVacancyQuery()
    {
        return Vacancy::where('active', 1)
            ->with('translation', 'images')
            ->orderBy('lft','asc');
    }

    /**
     * Get all Vacancies
     *
     * @return \Illuminate\Database\Eloquent\Collection
     */
    public function getVacancies()
    {
        return $this->baseVacancyQuery()->get();
    }

    /**
     * Get $amount of latest Vacancies
     *
     * @param  int  $amount
     * @return \Illuminate\Database\Eloquent\Collection|\Illuminate\Support\Collection
     */
    public function getFirstSetOfVacancies($amount = 3)
    {
        return $this->baseVacancyQuery()
            ->take($amount)
            ->get();
    }

    /**
     * Get Vacancies paginated per $amount on a page
     *
     * @param  int  $amountPerPage
     * @return \Illuminate\Contracts\Pagination\LengthAwarePaginator
     */
    public function getVacanciesPaginated($amountPerPage = 12)
    {
        return $this->baseVacancyQuery()->paginate($amountPerPage);
    }

    /**
     * Get the next Vacancies after give $vacancy
     *
     * @param  Vacancy  $vacancy
     * @return \Illuminate\Database\Eloquent\Collection|\Illuminate\Support\Collection
     */
    public function getNextVacancies(Vacancy $vacancy)
    {
        return $this->baseVacancyQuery()
            ->where('lft', '>', $vacancy->lft)
            ->take(2)
            ->get();
    }

}