<?php
    
    namespace common\modules\product\models;
    
    use common\modules\rubrication\models\TaxGroup;
    use common\modules\rubrication\models\TaxOption;
    use Yii;
    use yii\helpers\ArrayHelper;
    
    /**
     * This is the model class for table "product_variant".
     * @property integer      $product_variant_id
     * @property integer      $product_id
     * @property string       $name
     * @property string       $remote_id
     * @property string       $sku
     * @property double       $price
     * @property double       $price_old
     * @property double       $stock
     * @property integer      $product_unit_id
     * @property ProductImage $image
     * @property array        $images
     * @property TaxOption[]  $options
     * @property ProductUnit  $productUnit
     */
    class ProductVariant extends \yii\db\ActiveRecord
    {
        
        /**just for rukzachok**/
        public $count;
        
        public $sum_cost;
        
        public $product_name;
        
        //public $image;
        public $translit;
        
        public $translit_rubric;
        
        private $data;
        
        /** @var array $_images */
        public $imagesUpload = '';
        
        /**
         * @inheritdoc
         */
        public static function tableName()
        {
            return 'product_variant';
        }
        
        /**
         * @inheritdoc
         */
        public function rules()
        {
            return [
                [
                    [
                        'product_id',
                        'product_unit_id',
                    ],
                    'required',
                ],
                [
                    [
                        'product_id',
                        'product_unit_id',
                    ],
                    'integer',
                ],
                [
                    [
                        'price',
                        'price_old',
                        'stock',
                    ],
                    'number',
                ],
                [
                    [
                        'name',
                        'sku',
                    ],
                    'string',
                    'max' => 255,
                ],
                [
                    [ 'remote_id' ],
                    'string',
                    'max' => 20,
                ],
                [
                    [
                        'options',
                        'imagesUpload',
                    ],
                    'safe',
                ],
                [
                    [ 'product_unit_id' ],
                    'exist',
                    'skipOnError'     => true,
                    'targetClass'     => ProductUnit::className(),
                    'targetAttribute' => [ 'product_unit_id' => 'product_unit_id' ],
                ],
            ];
        }
        
        /**
         * @inheritdoc
         */
        public function attributeLabels()
        {
            return [
                'product_variant_id' => Yii::t('product', 'Product Variant ID'),
                'product_id'         => Yii::t('product', 'Product ID'),
                'name'               => Yii::t('product', 'Name'),
                'sku'                => Yii::t('product', 'Sku'),
                'price'              => Yii::t('product', 'Price'),
                'price_old'          => Yii::t('product', 'Price Old'),
                'stock'              => Yii::t('product', 'Stock'),
                'product_unit_id'    => Yii::t('product', 'Product Unit ID'),
                'stock_caption'      => Yii::t('product', 'Stock'),
                'image'              => Yii::t('product', 'Image'),
                'images'             => Yii::t('product', 'Images'),
            ];
        }
        
        /**
         * @return \yii\db\ActiveQuery
         */
        public function getProductUnit()
        {
            return $this->hasOne(ProductUnit::className(), [ 'product_unit_id' => 'product_unit_id' ]);
        }
        
        /**
         * @return \yii\db\ActiveQuery
         */
        public function getProduct()
        {
            return $this->hasOne(Product::className(), [ 'product_id' => 'product_id' ]);
        }
        
        public function getProductStock()
        {
            return $this->hasMany(ProductStock::className(), [ 'product_variant_id' => 'product_variant_id' ]);
        }
        
        public function getQuantity()
        {
            return ProductStock::find()
                               ->where([ 'product_variant_id' => $this->product_variant_id ])
                               ->sum('quantity');
        }
        
        public function getStock_caption()
        {
            return is_null($this->stock) ? '∞' : ( $this->stock > 0 ? Yii::t('product', 'Enable') : Yii::t('product', 'Disable') ); // intval($this->stock);
        }
        
        public function getVariantStocks()
        {
            
            return $this->hasMany(ProductStock::className(), [ 'product_variant_id' => 'product_variant_id' ])
                        ->joinWith('stock');
        }
        
        public function getStocks()
        {
            
            return $this->hasMany(Stock::className(), [ 'stock_id' => 'stock_id' ])
                        ->viaTable(ProductStock::tableName(), [ 'product_variant_id' => 'product_variant_id' ]);
        }
        
        public function getFilters()
        {
            
            return $this->hasMany(TaxOption::className(), [ 'tax_option_id' => 'option_id' ])
                        ->viaTable('product_variant_option', [ 'product_variant_id' => 'product_variant_id' ])
                        ->joinWith('taxGroup');
        }
        
        /**
         * @return \yii\db\ActiveQuery
         */
        public function getImage()
        {
            return $this->hasOne(ProductImage::className(), [ 'product_variant_id' => 'product_variant_id' ]);
        }
        
        /**
         * fetch stored image url
         * @return string
         */
        public function getImageUrl()
        {
            // return a default image placeholder if your source image is not found
            return !empty( $this->image ) ? $this->image->imageUrl : '/images/no_photo.png';
        }
        
        public function getFullname()
        {
            return empty( $this->product ) ? NULL : ( $this->product->name . ( empty( $this->name ) ? '' : ' ' . $this->name ) );
        }
        
        public function getImagesHTML()
        {
            $op = [];
            if($this->images) {
                foreach($this->images as $image) {
                    $op[] = \common\components\artboximage\ArtboxImageHelper::getImage($image->imageUrl, 'admin_thumb');
                }
            }
            return $op;
        }
        
        public function getImagesConfig()
        {
            $op = [];
            if($this->images) {
                foreach($this->images as $image) {
                    $op[] = [
                        'caption' => $image->image,
                        'width'   => '120px',
                        'url'     => \yii\helpers\Url::to([
                            '/product/manage/delimg',
                            'id' => $image->product_image_id,
                        ]),
                        'key'     => $image->product_image_id,
                        'extra'   => [
                            'id' => $image->product_image_id,
                        ],
                    ];
                }
            }
            return $op;
        }
        
        /**
         * @return \yii\db\ActiveQuery
         */
        public function getImages()
        {
            return $this->hasMany(ProductImage::className(), [ 'product_variant_id' => 'product_variant_id' ]);
        }
        
        public function setOptions($values)
        {
            $this->options = $values;
        }
        
        public function getOptions()
        {
            return $this->hasMany(TaxOption::className(), [ 'tax_option_id' => 'option_id' ])
                        ->viaTable('product_variant_option', [ 'product_variant_id' => 'product_variant_id' ]);
        }
        
        public function getProperties()
        {
            $groups = $options = [];
            foreach($this->options as $option) {
                $options[ $option->tax_group_id ][] = $option;
            }
            foreach(TaxGroup::find()
                            ->where([ 'tax_group_id' => array_keys($options) ])
                            ->all() as $group) {
                if(!empty( $options[ $group->tax_group_id ] )) {
                    $group->_options = $options[ $group->tax_group_id ];
                    $groups[] = $group;
                }
            }
            return $groups;
        }
        
        public function getId()
        {
            return $this->product_variant_id;
        }
        
        public function setStocks($stocks)
        {
            $this->stocks = (array) $stocks;
        }
        
        public function getCategory()
        {
            return $this->hasOne(Category::className(), [ 'category_id' => 'category_id' ])
                        ->viaTable('product_category', [ 'product_id' => 'product_id' ]);
        }
        
        public function getCategories()
        {
            return $this->hasMany(Category::className(), [ 'category_id' => 'category_id' ])
                        ->viaTable('product_category', [ 'product_id' => 'product_id' ]);
        }
        
        public function getTaxGroupsByLevel($level)
        {
            $categories = ArrayHelper::getColumn($this->categories, 'category_id');
            return TaxGroup::find()
                           ->distinct()
                           ->innerJoin('tax_group_to_category', 'tax_group_to_category.tax_group_id = tax_group.tax_group_id')
                           ->where([ 'tax_group_to_category.category_id' => $categories ])
                           ->where([ 'level' => $level ]);
        }
        
        public function afterSave($insert, $changedAttributes)
        {
            parent::afterSave($insert, $changedAttributes);
            $this->unlinkAll('options', true);
            $options = TaxOption::findAll($this->options);
            foreach($options as $option) {
                $this->link('options', $option);
            }
        }
        
        public function imagesUpload()
        {
            if($this->validate()) {
                $images = [];
                foreach($this->imagesUpload as $image) {
                    $imageName = $image->baseName . '.' . $image->extension;
                    $i = 0;
                    while(file_exists(Yii::getAlias('@imagesDir/products/' . $imageName))) {
                        $i++;
                        $imageName = $image->baseName . '_' . $i . '.' . $image->extension;
                    }
                    
                    $image->saveAs(Yii::getAlias('@imagesDir/products/' . $imageName));
                    $images[] = $imageName;
                }
                return $images;
            } else {
                return false;
            }
        }
    }