<?php
namespace App\KommaApp\Posts\Kms;


use App\KommaApp\Kms\Core\Attributes\Attribute;
use App\KommaApp\Kms\Core\NestedSets\Nodes\EloquentNode;
use App\KommaApp\Kms\Core\Sections\SectionService;
use App\KommaApp\Kms\Core\Sections\SectionTabItem;
use App\KommaApp\Languages\Models\Language;
use App\KommaApp\Pages\Models\PageTranslation;
use App\KommaApp\Posts\Models\Post;
use Illuminate\Database\Eloquent\Collection;
use Illuminate\Database\Eloquent\Model;

class PostService extends SectionService
{
    protected $sortable = false;
    protected $orderBy = 'date';
    protected $orderReverse = true;

    function __construct()
    {
        $this->forModelName = Post::class;

        parent::__construct();
    }

    /**
     * This method will save an model
     *
     * @param $model Model or null
     * @param Collection $sectionTabItems These must be filled with data. This is something you need to do yourself.
     *
     * @return mixed
     */
    public function saveModel(Model $model = null, Collection $sectionTabItems): Model
    {
        /** @var EloquentNode $model */
        //Process Page Specific attributes

//        dd($model);

        $sectionTabItems->each(function($sectionTabItem, $key) use($model) {
            /** @var SectionTabItem $sectionTabItem */

            $attribute = $sectionTabItem->getAttribute();

            $reference = $attribute->getsValueFromReference();
            switch ($attribute->getsValueFrom())
            {
                case Attribute::ValueFromModel:
                    if($reference == 'parent_id') {
                        // Get parent_id of the input
                        $parentId = $attribute->getValue();
                        $parentPage = $model->find($parentId);

                        // Set default to false
                        $currentParentId = null;

                        // Check if model id isset so if it is a new model or not
                        // if true then get current parent_id
                        if($model->id) $currentParentId = $model->getParentId();

                        //Check if parent page is found, model isset and parent page id isn't the current parent id
                        if($parentPage && $model && $parentPage->id !== $currentParentId)
                        {
                            $model->makeLastChildOf($parentPage);
                        }

                        $attribute->mapValueFrom(Attribute::ValueFromItself, ''); //unset parent_id it so it won't get saved directly on the model in the parent_id field. The makeLastChildOf call above does save the parent id via lft rgt
                    } elseif($reference == 'code_name') {

                    }
                    break;
                case Attribute::ValueFromTranslationModel;
                    /** @var Language $language */
                    $language = $attribute->getAssociatedLanguage();
                    if(!$model->exists) $model->save();
                    $translation = $this->getOrCreateTranslationModelForModel($model, $language);

                    if($reference == 'name')
                    {
                        $slug = $this->createOrGetUniqueSlug($translation, $attribute->getValue() );
                        $translation['slug'] = $slug;
                        $translation->save();
                    }
                    break;
                case Attribute::ValueFromItself;

                    // Qnd: Custom for author
                    if($reference == 'author_id')
                    {
                        /** @var Post $model */
                        $model->author()->associate($attribute->getValue());
                        $model->save();
                    }
                    break;
            }
        });

        $model->save(); //Save the page

        $model = parent::saveModel($model, $sectionTabItems); //First make sure we have a model and save the attributes in them from the SectionTabItem attributes

        //Return the page
        return $model;
    }

    /**
     * Fills attributes with data from a model in this way:
     *
     * 1. First it looks if it needs to get the value from a translationModel.
     *    If so, gets it, fills the attribute and fills the next attribute if any
     * 2. Then it looks if it needs to get the value from it's model.
     *    If so, gets it, fills the attribute and fills the next attribute if any
     * 4. Then it looks if it needs to get the value from the images associated with it.
     *    If so, gets it, fills the attribute and fills the next attribute if any
     * Please notice that if cases 1, 2 and 3 where true the value you may have set with setValue is overwritten.
     *
     * @param Collection $sectionTabItems A collection containing implementations AbstractSectionTabItem's
     * @param Model $model
     * @return Collection
     */
    public function fillAttributesWithData(Collection $sectionTabItems, Model $model)
    {
        $filledAttributes = parent::fillAttributesWithData($sectionTabItems,$model);

        $sectionTabItems->each(
            function (SectionTabItem $sectionTabItem, $key) use ($model, $filledAttributes) {

                $value = null;

                $valueReference = $sectionTabItem->getAttribute()->getsValueFromReference();

                switch ($sectionTabItem->getAttribute()->getsValueFrom()) {
                    //Case 1. Check if the translation of the model has a value.
                    case Attribute::ValueFromItself:

                        if($valueReference == 'author_id')
                        {
                            $author = $model->author()->first();
                            if($author) $sectionTabItem->getAttribute()->setValue($author->id);
                        }

                        break;
                }

                //Finally when we have a value we will set it on the attribute and then process the next one.
                if ($value !== null) {
                    $sectionTabItem->getAttribute()->setValue((string)$value);
                }

                $filledAttributes->push($sectionTabItem);
            }
        );

        return $filledAttributes;
    }
}