<?php

namespace common\modules\blog\forms;

use common\modules\blog\entities\BlogCategory;
use common\modules\blog\entities\BlogPost;
use core\forms\CompositeForm;
use core\forms\CompositeLanguageForm;
use core\forms\MetaForm;
use core\validators\SlugValidator;
use yii\db\ActiveQuery;
use yii\db\ActiveRecord;
use yii\helpers\ArrayHelper;
use yii\web\UploadedFile;
use Yii;

/**
 * @property MetaForm $meta
 * @property BlogTagForm $tags
 */
class BlogPostForm extends CompositeLanguageForm
{
	public $type;

    public $category_id;
    public $title;
    public $description;
    public $content;
    public $image;
    public $video;
    public $published_at;
    public $slug;
    public $reset_image;
    public $status;
	public $meta_title;
	public $meta_description;
	public $meta_keywords;

	public $_post;

	public function __construct(BlogPost $post = null, array $attributes = [], $config = [])
    {
        if ($post) {
            $this->category_id = $post->category_id;
            $this->video = $post->video;
            $this->published_at = $post->published_at;
            $this->slug = $post->slug;
            $this->tags = new BlogTagForm($post);
            $this->status = $post->status;
            $this->_post = $post;
        } else {
            $this->tags = new BlogTagForm();
            $this->status = 0;
        }
        parent::__construct($post, $attributes, $config);
    }

    public function rules(): array
    {
	    return array_merge(
		    parent::rules(),
		    [
	            [['category_id', 'title'], 'required'],
	            [['title', 'video', 'meta_title', 'meta_keywords'], 'string', 'max' => 255],
	            [['category_id', 'status'], 'integer'],
	            [['description', 'content', 'meta_description'], 'string'],
	            [['image'], 'image'],
		        ['reset_image', 'boolean'],
		        ['published_at', 'safe'],
		        ['slug', SlugValidator::class],
		        [['slug'], 'unique', 'targetClass' => BlogPost::class, 'filter' => function (ActiveQuery $query) {
	                if ($this->type != BlogPost::TYPE_PUBLIC) {
			            $query->andWhere($this->type . '=' . BlogPost::TYPE_PUBLIC);
		            }

	                $query->andWhere(['type' => BlogPost::TYPE_PUBLIC]);
	                if ($this->_post) {
	                    $query->andWhere(['<>', 'id', $this->_post->id]);
		            }
		            return $query;
		        }],
	        ]
	    );
    }

    public function attributeLabels()
    {
	    return array_merge(
		    parent::attributeLabels(),
		    [
			    'id' => Yii::t('blog', 'ID'),
			    'category_id' => Yii::t('blog', 'Category'),
			    'published_at' => Yii::t('blog', 'Published At'),
			    'created_at' => Yii::t('blog', 'Created At'),
			    'updated_at' => Yii::t('blog', 'Updated At'),
			    'title' => Yii::t('blog', 'Title'),
			    'description' => Yii::t('blog', 'Description'),
			    'content' => Yii::t('blog', 'Content'),
			    'image' => Yii::t('blog', 'Image'),
			    'video' => Yii::t('blog', 'Video'),
			    'status' => Yii::t('blog', 'Status'),
			    'comments_count' => Yii::t('blog', 'Comments Count'),
			    'views' => Yii::t('blog', 'Views'),
			    'slug' => Yii::t('blog', 'Slug'),
			    'reset_image' => Yii::t('blog', 'Reset Image'),
			    'meta_title' => Yii::t('blog', 'META Title'),
			    'meta_description' => Yii::t('blog', 'META Description'),
			    'meta_keywords' => Yii::t('blog', 'META Keywords'),
		    ]
	    );
    }

    public function attributeHints() {
	    return array_merge(
		    parent::attributeHints(),
		    [
			    'published_at' => Yii::t('blog', 'The article will be published after the specified date if its status is not a draft'),
			    'slug' => Yii::t('pages', 'SEO link will be generated automatically if not specified'),
		    ]
	    );
    }

	public function categoriesList(): array
    {
	    return ArrayHelper::map(BlogCategory::find()->orderBy('sort')->all(), 'id', function (BlogCategory $category) {
		    return $category->translation->name;
	    });
    }

    protected function internalForms(): array
    {
        return ['tags'];
    }

    public function beforeValidate(): bool
    {
        if (parent::beforeValidate()) {
	        $this->image = UploadedFile::getInstance($this, 'image');
            $this->published_at = strtotime($this->published_at);
            return true;
        }
        return false;
    }
}