<?php

namespace App\Komma\Webinars;

use App\Komma\Base\Service;
use Illuminate\Support\Collection;

class WebinarService extends Service
{
    public function getWebinars($pagination = false, $itemsPerPage = 9)
    {
        $webinars = $this->site
            ->webinars()
            ->with('translation', 'images', 'fallback_translation')
            ->orderBy('webinars.lft')

            // We need to use a join to select the active webinars because that is defined on the translations
            ->join('webinar_translations', 'webinars.id', '=', 'webinar_translations.webinar_id')
            ->select('webinars.*', 'webinar_translations.active', 'webinar_translations.populate_from_english', 'webinar_translations.language_id')
            ->where(function ($query) {
                $query->where('active', '=', 1)
                    ->orWhere('populate_from_english', '=', 1);
            })
            ->where('language_id', \App::getLanguage()->id);

        if ($pagination) {
            $webinars = $webinars->paginate($itemsPerPage);

            // Skip the population if language is already english
            if (app()->getLocale() != 'en') {
                $this->populatedFallbackTranslationOnCollection($webinars->getCollection());
            }
        } else {
            $webinars = $webinars->paginate(999);

            // Skip the population if language is already english
            if (app()->getLocale() != 'en') {
                $this->populatedFallbackTranslationOnCollection($webinars->getCollection());
            }
        }

        return $webinars;
    }

    private function populatedFallbackTranslationOnCollection(Collection $webinars)
    {
        foreach ($webinars as $webinar) {
            // Skip if we don't need to populated
            if (! $webinar->translation->populate_from_english) {
                continue;
            }
            $webinar->translation = $webinar->fallback_translation;
            $webinar->used_fallback_translation = true;
        }
    }
}