<?php
    
    namespace common\modules\product\models;
    
    use common\behaviors\SaveMultipleImgBehavior;
    use common\behaviors\Slug;
    use common\models\ProductToRating;
    use common\models\Share;
    use common\modules\comment\models\CommentModel;
    use common\modules\product\behaviors\FilterBehavior;
    use common\modules\rubrication\models\TaxGroup;
    use common\modules\rubrication\models\TaxOption;
    use Yii;
    use yii\db\ActiveQuery;
    use yii\db\ActiveRecord;
    use yii\helpers\ArrayHelper;
    use common\models\Event;
    
    /**
     * This is the model class for table "{{%product}}".
     *
     * @property string          $name
     * @property integer         $brand_id
     * @property integer         $product_id
     * @property Category        $category
     * @property array           $categories
     * @property array           of ProductVariant $variants
     * @property ProductVariant  $variant
     * @property ProductImage    $image
     * @property array           $images
     * @property boolean         $is_top
     * @property boolean         $is_new
     * @property boolean         $akciya
     * @property ProductToRating $averageRating
     * @property array           $properties
     * @property ProductVariant  $enabledVariant
     * @property array           $enabledVariants
     */
    class Product extends \yii\db\ActiveRecord
    {
        public $_variants = [];
        public $_categories = [];
        public $_options = [];
        
        /** @var array $_images */
        public $imagesUpload = '';
        
        /**
         * @inheritdoc
         */
        public function behaviors()
        {
            return [
                [
                    'class'  => SaveMultipleImgBehavior::className(),
                    'fields' => [
                        [
                            'name'      => 'imagesUpload',
                            'directory' => 'products',
                        ],
                    ],
                ],
                [
                    'class' => FilterBehavior::className(),
                ],
                [
                    'class'         => Slug::className(),
                    'in_attribute'  => 'name',
                    'out_attribute' => 'alias',
                    'translit'      => true,
                ],
            ];
        }
        
        /**
         * @inheritdoc
         */
        public static function tableName()
        {
            return '{{%product}}';
        }
        
        /**
         * @return  \yii\db\ActiveQuery
         */
        public function getEvents()
        {
            return $this->hasMany(Event::className(), [ 'event_id' => 'event_id' ])
                        ->viaTable('events_to_products', [ 'product_id' => 'product_id' ]);
        }
        
        /**
         * @inheritdoc
         */
        public function rules()
        {
            return [
                //            [['categories'], 'required'],
                [
                    [ 'brand_id' ],
                    'integer',
                ],
                [
                    [ 'name' ],
                    'string',
                    'max' => 150,
                ],
                [
                    [ 'alias' ],
                    'string',
                    'max' => 250,
                ],
                [
                    [
                        'categories',
                        'variants',
                        'options',
                        'imagesUpload',
                    ],
                    'safe',
                ],
                //            [['imagesUpload'], 'file', 'skipOnEmpty' => false, 'extensions' => 'png, jpg, gif', 'maxFiles' => 50],
                [
                    [
                        'description',
                        'video',
                    ],
                    'safe',
                ],
                [
                    [
                        'is_top',
                        'is_new',
                        'akciya',
                    ],
                    'boolean',
                ],
                //            [['product_id'], 'exist', 'skipOnError' => true, 'targetClass' => Product::className(), 'targetAttribute' => ['product_id' => 'product_id']],
            ];
        }
        
        /**
         * @inheritdoc
         */
        public function attributeLabels()
        {
            return [
                'product_id'  => Yii::t('product', 'ID'),
                'name'        => Yii::t('product', 'Name'),
                'brand_id'    => Yii::t('product', 'Brand'),
                'categories'  => Yii::t('product', 'Categories'),
                // relation behavior field
                'category'    => Yii::t('product', 'Category'),
                // relation behavior field
                'image'       => Yii::t('product', 'Image'),
                'images'      => Yii::t('product', 'Images'),
                'description' => Yii::t('product', 'Description'),
                'video'       => Yii::t('product', 'Video embeded'),
                'variants'    => Yii::t('product', 'Variants'),
                'is_top'      => Yii::t('product', 'Is top'),
                'is_new'      => Yii::t('product', 'Is new'),
                'akciya'      => Yii::t('product', 'Is promo'),
            ];
        }
        
        public function getUrl()
        {
            return '/product/' . $this->alias;
        }
        
        /**
         * @return \yii\db\ActiveQuery
         */
        public function getBrand()
        {
            return $this->hasOne(Brand::className(), [ 'brand_id' => 'brand_id' ]);
        }
        
        /**
         * @return \yii\db\ActiveQuery
         */
        public function getImage()
        {
            return $this->hasOne(ProductImage::className(), [ 'product_id' => 'product_id' ]);
        }
        
        /**
         * fetch stored image url
         *
         * @return string
         */
        public function getImageUrl()
        {
            
            $image = !empty( $this->image ) ? $this->image : $this->variant->image;
            return !empty( $image ) ? $image->imageUrl : '/storage/no_photo.png';
        }
        
        /**
         * @return \yii\db\ActiveQuery
         */
        public function getImages()
        {
            return $this->hasMany(ProductImage::className(), [ 'product_id' => 'product_id' ])
                        ->where([ 'product_variant_id' => null ]);
        }
        
        /**
         * @return \yii\db\ActiveQuery
         */
        public function getVariant()
        {
            return $this->hasOne(ProductVariant::className(), [ 'product_id' => 'product_id' ]);
        }
        
        /**
         * @return \yii\db\ActiveQuery
         */
        public function getVariants()
        {
            return $this->hasMany(ProductVariant::className(), [ 'product_id' => 'product_id' ]);
        }
        
        /**
         * @return \yii\db\ActiveQuery
         */
        public function getEnabledVariant()
        {
            return $this->hasOne(ProductVariant::className(), [ 'product_id' => 'product_id' ])
                        ->andOnCondition(
                            [
                                '!=',
                                ProductVariant::tableName() . '.status',
                                1,
                            ]
                        );
        }
        
        public function getVariantPrice()
        {
            return $this->variant->price;
        }
        
        public function getPrice()
        {
            return $this->variant->price;
        }
        
        public function getEnabledVariantPrice()
        {
            return $this->enabledVariants[ 0 ]->price;
        }
        
        public function getEnabledVariants()
        {
            return $this->hasMany(ProductVariant::className(), [ 'product_id' => 'product_id' ])
                        ->andOnCondition(
                            [
                                '!=',
                                ProductVariant::tableName() . '.status',
                                1,
                            ]
                        )
                        ->joinWith('image');
        }
        
        /*
         * Get variants grouped by type
         */
        public function getEnabledVariantsGrouped()
        {
            $variants = [];
            foreach ($this->enabledVariants as $variant) {
                $variants[ $variant->product_variant_type_id ? $variant->product_variant_type_id : 1 ][] = $variant;
            }
            if (empty( $variants )) {
                return [];
            }
            $ids = array_keys($variants);
            $variants_type = [];
            foreach (ProductVariantType::find()
                                       ->select(
                                           [
                                               'product_variant_type_id',
                                               'name2',
                                           ]
                                       )
                                       ->where([ 'product_variant_type_id' => $ids ])
                                       ->all() as $variant_type) {
                $variant_type->_variants = $variants[ $variant_type->product_variant_type_id ];
                $variants_type[] = $variant_type;
            }
            return $variants_type;
        }
        
        public function setVariants($variants)
        {
            $this->_variants = $variants;
        }
        
        public function getFullName()
        {
            $name = '';
            $taxOption = TaxOption::find()
                                  ->innerJoin('tax_group', 'tax_group.tax_group_id = tax_option.tax_group_id')
                                  ->innerJoin('tax_group_to_category', 'tax_group.tax_group_id = tax_group_to_category.tax_group_id')
                                  ->where(
                                      [
                                          'tax_group_to_category.category_id' => $this->category->category_id,
                                          'tax_group.use_in_name'             => 1,
                                          'tax_option.tax_option_id'          => ArrayHelper::getColumn(
                                              $this->options,
                                              'tax_option_id'
                                          ),
                                      ]
                                  )
                                  ->one();
            if($taxOption) {
                if(!empty($taxOption->synonym)) {
                    $taxOption = $taxOption->synonym;
                } else {
                    $taxOption = $taxOption->value;
                }
                $name .= $taxOption;
            } else {
                if(!empty($this->category->synonym)) {
                    $name .= $this->category->synonym;
                } else {
                    $name .= $this->category->name;
                }
            }
            
            if (!empty( $this->brand )) {
                $name = $name . ' ' . $this->brand->name;
            }
            $name .= ' ' . $this->name;
            return $name;
        }
        
        public function getCategories()
        {
            return $this->hasMany(Category::className(), [ 'category_id' => 'category_id' ])
                        ->viaTable('product_category', [ 'product_id' => 'product_id' ]);
            //        return $this->getRelations('product_categories');
        }
        public function getCategoriesWithName()
        {
            return $this->hasMany(Category::className(), [ 'category_id' => 'category_id' ])
                        ->viaTable('product_category', [ 'product_id' => 'product_id' ]);
            //        return $this->getRelations('product_categories');
        }
        
        public function getCategoriesNames()
        {
            $result = [];
            foreach ($this->categories as $category) {
                $result[] = $category->name;
            }
            return $result;
        }
        
        public function getVariantsWithFilters()
        {
            return $this->hasMany(ProductVariant::className(), [ 'product_id' => 'product_id' ])
                        ->with(
                            [
                                'filters',
                                'image',
                            ]
                        );
        }
        
        /**
         * @return ActiveQuery
         */
        public function getCategory()
        {
            return $this->hasOne(Category::className(), [ 'category_id' => 'category_id' ])
                        ->viaTable('product_category', [ 'product_id' => 'product_id' ]);
        }
        
        public function getOptions()
        {
            return $this->hasMany(TaxOption::className(), [ 'tax_option_id' => 'option_id' ])
                        ->viaTable('product_option', [ 'product_id' => 'product_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 getActiveProperties($category_id)
        {
            $cacheKey = [
                'ActiveProperties',
                'id'         => $category_id,
                'options'    => $this->options,
                'product_id' => $this->product_id,
            ];
            
            if (!$groups = Yii::$app->cache->get($cacheKey)) {
                
                $groups = $options = [];
                foreach ($this->options as $option) {
                    $options[ $option->tax_group_id ][] = $option;
                }
                
                $taxGroups = TaxGroup::find()
                                     ->joinWith('categories')
                                     ->where(
                                         [
                                             'tax_group.tax_group_id' => array_keys($options),
                                             'tax_group.display'      => true,
                                             'category.category_id'   => $category_id,
                                         ]
                                     )
                                     ->all();
                
                foreach ($taxGroups as $group) {
                    if (!empty( $options[ $group->tax_group_id ] )) {
                        $group->_options = $options[ $group->tax_group_id ];
                        $groups[] = $group;
                    }
                }
                Yii::$app->cache->set($cacheKey, $groups, 3600 * 24);
            }
            
            return $groups;
        }
        
        public function getStocks()
        {
            return $this->hasMany(Stock::className(), [ 'stock_id' => 'stock_id' ])
                        ->viaTable(ProductStock::tableName(), [ 'product_id' => 'product_id' ]);
        }
        
        public function getQuantity()
        {
            return ProductStock::find()
                               ->where([ 'product_id' => $this->product_id ])
                               ->sum('quantity');
        }
        
        public function beforeSave($insert)
        {
            
            if (parent::beforeSave($insert)) {
                
                return true;
            }
            return false;
            
        }
        
        public function afterSave($insert, $changedAttributes)
        {
            parent::afterSave($insert, $changedAttributes);
            
            if (!empty( $this->categories )) {
                $categories = Category::findAll($this->categories);
                $this->unlinkAll('categories', true);
                foreach ($categories as $category) {
                    $this->link('categories', $category);
                }
            }
            
            if (!empty( $this->options )) {
                $options = TaxOption::findAll($this->options);
                $this->unlinkAll('options', true);
                foreach ($options as $option) {
                    $this->link('options', $option);
                }
            }
            
            if (!empty( $this->_variants )) {
                $todel = [];
                foreach ($this->variants ? : [] as $_variant) {
                    $todel[ $_variant->product_variant_id ] = $_variant->product_variant_id;
                }
                foreach ($this->_variants as $_variant) {
                    if (!is_array($_variant)) {
                        return;
                    }
                    if (!empty( $_variant[ 'product_variant_id' ] )) {
                        unset( $todel[ $_variant[ 'product_variant_id' ] ] );
                        $model = ProductVariant::findOne($_variant[ 'product_variant_id' ]);
                    } else {
                        $model = new ProductVariant();
                    }
                    $_variant[ 'product_id' ] = $this->product_id;
                    $model->load([ 'ProductVariant' => $_variant ]);
                    $model->product_id = $this->product_id;
                    $model->save();
                }
                if (!empty( $todel )) {
                    ProductVariant::deleteAll([ 'product_variant_id' => $todel ]);
                }
            }
        }
        
        public function beforeDelete()
        {
            if (parent::beforeDelete()) {
                $this->unlinkAll('categories', true);
                $this->unlinkAll('options', true);
                ProductImage::deleteAll([ 'product_id' => $this->product_id ]);
                
                ProductVariant::deleteAll([ 'product_id' => $this->product_id ]);
                ProductStock::deleteAll([ 'product_id' => $this->product_id ]);
                Share::deleteAll([ 'product_id' => $this->product_id ]);
                return true;
            }
            return false;
            
        }
        
        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;
                    }
                    $imgDir = Yii::getAlias('@imagesDir/products/');
                    if (!is_dir($imgDir)) {
                        mkdir($imgDir, 0755, true);
                    }
                    
                    $image->saveAs($imgDir . $imageName);
                    $images[] = $imageName;
                }
                return $images;
            } else {
                return false;
            }
        }
        
        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,
                        '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;
        }
        
        public function recalculateRating()
        {
            /**
             * @var ProductToRating $averageRating
             */
            $average = $this->getComments()
                            ->joinWith('rating')
                            ->select([ 'average' => 'avg(artbox_comment_rating.value)::float' ])
                            ->scalar();
            if (!$average) {
                $average = 0;
            }
            $averageRating = $this->averageRating;
            if (!empty( $averageRating )) {
                $averageRating->value = $average;
            } else {
                $averageRating = new ProductToRating(
                    [
                        'product_id' => $this->product_id,
                        'value'      => $average,
                    ]
                );
            }
            if ($averageRating->save()) {
                return true;
            } else {
                return false;
            }
        }
        
        public function getComments()
        {
            return $this->hasMany(CommentModel::className(), [ 'entity_id' => 'product_id' ])
                        ->where(
                            [
                                'artbox_comment.entity'             => self::className(),
                                'artbox_comment.status'             => CommentModel::STATUS_ACTIVE,
                                'artbox_comment.artbox_comment_pid' => null,
                            ]
                        );
        }
        
        public function getAverageRating()
        {
            return $this->hasOne(ProductToRating::className(), [ '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'
                           )
                           ->andWhere([ 'tax_group_to_category.category_id' => $categories ])
                           ->andWhere([ 'level' => $level ]);
        }
        
        public function setCategories($values)
        {
            $this->categories = $values;
        }
        
        public function setOptions($values)
        {
            $this->options = $values;
        }
        
        public function getFilters()
        {
            
            return $this->hasMany(TaxOption::className(), [ 'tax_option_id' => 'option_id' ])
                        ->viaTable('product_option', [ 'product_id' => 'product_id' ])
                        ->joinWith('taxGroup');
        }
        
    }