<?php
    
    namespace common\modules\product\models;
    
    use common\models\EventsToProducts;
    use common\modules\product\helpers\ProductHelper;
    use common\modules\product\models\Category;
    use common\modules\product\models\CategoryName;
    use common\modules\product\models\ProductImage;
    use common\modules\product\models\ProductVariantType;
    use common\modules\rubrication\models\TaxGroup;
    use common\modules\rubrication\models\TaxOption;
    use common\modules\rubrication\models\TaxValueString;
    use Yii;
    use common\modules\product\models\Brand;
    use common\modules\product\models\BrandName;
    use common\modules\product\models\Product;
    use common\modules\product\models\ProductVariant;
    use common\modules\product\models\RemoteProducts;
    use yii\base\Model;
    use yii\helpers\ArrayHelper;
    
    class Import extends Model
    {
        public $file;
        public $type;
        
        public $errors = [];
        public $output = [];
        
        /**
         * @inheritdoc
         */
        public function rules()
        {
            return [
                [
                    [ 'type' ],
                    'required',
                ],
                [
                    [ 'type' ],
                    'string',
                ],
                //            [['file'], 'safe'],
                [
                    [ 'file' ],
                    'file',
                    'extensions' => 'csv',
                ],
            ];
        }
        
        /**
         * @inheritdoc
         */
        public function attributeLabels()
        {
            return [
                'file' => Yii::t('product', 'File'),
            ];
        }
        
        public function getType()
        {
            if (!$this->type) {
                $this->type = 'products';
            }
            return $this->type;
        }
        
        public function goPrices($from = 0, $limit = null)
        {
            set_time_limit(0);
            $new_products = $linked_products = 0;
            
            if (!( $handle = $this->getProductsFile('uploadFilePrices') )) {
                $this->errors[] = 'File not found';
                return false;
            }
            
            if (file_exists(Yii::getAlias('@uploadDir/goPrices.lock'))) {
                return 'Task already executed';
            }
            $ff = fopen(Yii::getAlias('@uploadDir/goPrices.lock'), 'w+');
            fclose($ff);
            
            $filesize = filesize(Yii::getAlias('@uploadDir') . '/' . Yii::getAlias('@uploadFilePrices'));
            if ($from) {
                fseek($handle, $from);
                
            }
            
            $j = 0;
            
            $is_utf = ( preg_match(
                '//u',
                file_get_contents(
                    Yii::getAlias('@uploadDir') . '/' . Yii::getAlias('@uploadFilePrices'),
                    null,
                    null,
                    null,
                    1000000
                )
            ) );
            
            if ($from == 0) {
                ProductStock::updateAll([ 'quantity' => 0 ]);
                ProductVariant::updateAll([ 'status' => 1 ], 'status != 2');
            }
            
            while (empty( $limit ) || $j++ < $limit) {
                
                if (!( ( $data = fgetcsv($handle, 10000, ";") ) !== false )) {
                    break;
                }
                
                foreach ($data as &$value) {
                    if (!$is_utf) {
                        $value = iconv('windows-1251', "UTF-8//TRANSLIT//IGNORE", $value);
                    }
                    $value = trim($value);
                }
                
                // данные строк
                $modification_code = @$data[ 0 ];
                $price = floatval(@$data[ 1 ]);
                $price_promo = floatval(@$data[ 2 ]);
                $count = intval(@$data[ 3 ]);
                $city_name = @$data[ 4 ];
                $product_title = @$data[ 5 ];
                
                if (empty ( $modification_code )) {
                    continue;
                }
                // товары в пути
                //            if (empty ($city_name))
                //            {
                //                $this->saveNotFoundRecord (
                //                    [$modification_code, $product_title],
                //                    Yii::getAlias('@uploadFilePricesAway')
                //                );
                //
                //                $this->output[] = 'Товар '. $product_title . ' в пути';
                //
                //                continue;
                //            }
                
                if (( $productVariant = ProductVariant::find()
                                                      ->filterWhere([ 'sku' => $modification_code ])
                                                      ->one() ) === null
                ) {
                    // 'Нет даной модификации в базе';
                    //                $this->saveNotFoundRecord (
                    //                    [$modification_code, $product_title],
                    //                    Yii::getAlias('@uploadFilePricesNoVariant')
                    //                );
                    
                    $this->output[] = 'Для товара ' . $product_title . ' не найдено соотвествие';
                    
                    continue;
                }
                
                // ===== Set stock ====
                if (!$city_name) {
                    if (!$count) {
                        if ($productVariant->status !== 2) {
                            $productVariant->status = 0;
                        }
                        if ($price_promo) {
                            $productVariant->price_old = $price;
                            $productVariant->price = $price_promo;
                        } else {
                            $productVariant->price = $price;
                            $productVariant->price_old = $price_promo;
                        }
                        $productVariant->save(false, ['status', 'price', 'price_promo']);
                        continue;
                    }
                    $city_name = 'Склад';
                }
                if (( $stock = Stock::find()
                                    ->filterWhere([ 'name' => trim($city_name) ])
                                    ->one() ) === null
                ) {
                    
                    // Create stock
                    $stock = new Stock();
                    $stock->name = trim($city_name);
                    $stock->save();
                }
                
                $productStock = ProductStock::find()
                                            ->where(
                                                [
                                                    'product_variant_id' => $productVariant->product_variant_id,
                                                    'stock_id'           => $stock->stock_id,
                                                ]
                                            )
                                            ->one();
                if (!$productStock instanceof ProductStock) {
                    $productStock = new ProductStock;
                    $productStock->product_variant_id = $productVariant->product_variant_id;
                    $productStock->stock_id = $stock->stock_id;
                    $productStock->product_id = $productVariant->product_id;
                }
                $productStock->quantity = $count;
                
                $productStock->save();
                $productStocks = ProductStock::find()
                                             ->where([ 'product_variant_id' => $productVariant->product_variant_id ])
                                             ->andWhere(
                                                 [
                                                     '<>',
                                                     'stock_id',
                                                     $stock->stock_id,
                                                 ]
                                             )
                                             ->all();
                
                $quantity = array_sum(ArrayHelper::getColumn($productStocks, 'quantity')) + $count;
                
                if ($price_promo) {
                    $productVariant->price_old = $price;
                    $productVariant->price = $price_promo;
                } else {
                    $productVariant->price = $price;
                    $productVariant->price_old = $price_promo;
                }
                
                $productVariant->stock = $quantity;
                if ($productVariant->status !== 2) {
                    $productVariant->status = 0;
                }
                $productVariant->save();
                
                $this->output[] = '<font style="color:blue">Товар ' . $product_title . ' успешно сохранен</font>';
            }
            
            $result = [
                'end'       => feof($handle),
                'from'      => ftell($handle),
                'totalsize' => $filesize,
                'items'     => $this->output,
            
            ];
            
            fclose($handle);
            
            if ($result[ 'end' ]) {
                unlink(Yii::getAlias('@uploadDir') . '/' . Yii::getAlias('@uploadFilePrices'));
            }
            unlink(Yii::getAlias('@uploadDir/goPrices.lock'));
            return $result;
        }
        
        public function goProducts($from = 0, $limit = null)
        {
            set_time_limit(0);
            $new_products = $linked_products = 0;
            
            if (!( $handle = $this->getProductsFile('uploadFileProducts') )) {
                $this->errors[] = 'File not found';
                return false;
            }
            if (file_exists(Yii::getAlias('@uploadDir/goProducts.lock'))) {
                return 'Task already executed';
            }
            $ff = fopen(Yii::getAlias('@uploadDir/goProducts.lock'), 'w+');
            fclose($ff);
            
            $filesize = filesize(Yii::getAlias('@uploadDir') . '/' . Yii::getAlias('@uploadFileProducts'));
            
            if ($from) {
                fseek($handle, $from);
            }
            
            $j = 0;
            
            $is_utf = ( preg_match(
                '//u',
                file_get_contents(
                    Yii::getAlias('@uploadDir') . '/' . Yii::getAlias('@uploadFileProducts'),
                    null,
                    null,
                    null,
                    1000000
                )
            ) );
            
            $result_items = [];
            
            while (empty( $limit ) || $j++ < $limit) {
                if (!( ( $data = fgetcsv($handle, 10000, ";") ) !== false )) {
                    break;
                }
                
                foreach ($data as &$value) {
                    if (!$is_utf) {
                        $value = iconv('windows-1251', "UTF-8//TRANSLIT//IGNORE", $value);
                    }
                    $value = trim($value);
                }
                
                // будет всегда 19 элементов
                for ($i = 0; $i <= 18; $i++) {
                    if (!isset ( $data[ $i ] )) {
                        $data[ $i ] = null;
                    }
                }
                
                // 1  Группа (категория)
                $catalog_names = explode(',', $data[ 0 ]);
                
                if (empty ( $catalog_names )) {
                    $result_items[] = "Не указана категория (строка $j) ";
                    continue;
                }
                
                // 2  Бренд
                $brand_name = $data[ 1 ];
                if (empty ( $brand_name )) {
                    $result_items[] = "Не указан бренд (строка $j)";
                    continue;
                }
                
                // 3  Название товара
                $product_name = $data[ 2 ];
                if (empty ( $product_name )) {
                    $result_items[] = "Не указано наименование товара (строка $j)";
                    continue;
                }
                if (preg_match('/^.+\(#(\d+)#\)$/', trim($product_name), $remote_id)) {
                    if (!empty( $remote_id[ 1 ] )) {
                        $remote_id = $remote_id[ 1 ];
                        $product_name = substr($product_name, 0, strpos($product_name, '(#' . $remote_id . '#)'));
                    }
                }
                
                // 4  Описание Укр
                $product_body_uk = $data[ 3 ];
                
                // 5  Описание Рус
                $product_body_ru = $data[ 4 ];
                
                // 6  Фильтр [god:2013-2014]*[pol:мужской]*[naznacenie-germo-beg:Для вещей]*[material-germo-bag:нет]*[value-germo-bag:нет]*[weight-germo-bag:нет]*[ipx-germo-bag:нет]*[in-pacage-bag:нет]*[size-germo-bag:нет]*[rekomend-germo-bag:нет]
                $filters = explode('*', $data[ 5 ]);
                
                // 11 Цена акция
                $product_cost_old = floatval($data[ 7 ]);
                $product_cost = '';
                // 10 Цена
                if ($product_cost_old) {
                    $product_cost_old = floatval($data[ 6 ]);
                    $product_cost = floatval($data[ 7 ]);
                }
                
                // 12 Акция
                $product_akciya = (bool) $data[ 8 ];
                
                // 13 Сопуд. Тов.
                $similar = explode(',', $data[ 9 ]);
                
                // 14 Новинки
                $product_new = (bool) $data[ 10 ];
                
                // 15 Топ продаж
                $product_top = (bool) $data[ 11 ];
                
                // 17 ВИДЕО КОД
                $product_video = $data[ 12 ];
                
                // 18 Галлерея фото
                if (trim($data[ 13 ])) {
                    $fotos = explode(',', trim($data[ 13 ]));
                }
                
                // 19 Штрих код товара.
                // расшифровал - это модификации товара!
                
                $product_image = explode('=', $data[ 14 ]);
                $product_image = @$product_image[ 3 ];
                
                if (!empty( $remote_id )) {
                    if (( $_product = Product::find()
                                             ->filterWhere([ 'product_id' => $remote_id ])
                                             ->one() ) === null
                    ) {
                        $_product = new Product();
                    }
                } elseif (( $_product = Product::find()
                                               ->filterWhere([ 'name' => trim($product_name) ])
                                               ->one() ) === null
                ) {
                    $_product = new Product();
                }
                
                $is_new_product = empty( $_product->product_id );
                $category_id = [];
                foreach ($catalog_names as $catalog_name) {
                    
                    // ==== Set category ====
                    if (( $category = Category::find()
                                              ->filterWhere([ 'name' => trim($catalog_name) ])
                                              ->one() ) === null
                    ) {
                        // Create category
                        $category = new Category();
                        $category->name = trim($catalog_name);
                        $category->save();
                    }
                    
                    $category_id[] = $category->category_id;
                }
                
                $_product->categories = $category_id;
                
                // ===== Set brand ====
                if ($brand_name) {
                    if (( $brand = Brand::find()
                                        ->filterWhere([ 'name' => trim($brand_name) ])
                                        ->one() ) !== null
                    ) {
                        $_product->brand_id = $brand->brand_id;
                    } else {
                        // Create brand
                        $brand = new Brand();
                        $brand->name = trim($brand_name);
                        $brand->save();
                        $_product->brand_id = $brand->brand_id;
                    }
                }
                
                $_product->name = $product_name;
                $_product->video = $product_video;
                $_product->description = $product_body_ru;
                $_product->is_top = $product_top;
                $_product->akciya = $product_akciya;
                $_product->is_new = $product_new;
                
                if (!$_product->save()) {
                    $result_items[] = 'Product #' . $_product->name . ' not saved' . " (строка $j)";
                    continue;
                }
                
                if (!empty( $fotos )) {
                    foreach ($fotos as $foto) {
                        $source_image = Yii::getAlias('@uploadDir') . '/product_images/' . urlencode($foto);
                        
                        if (file_exists($source_image)) {
                            if (( $productImage = ProductImage::find()
                                                              ->andFilterWhere([ 'image' => $foto ])
                                                              ->andFilterWhere(
                                                                  [ 'product_id' => $_product->product_id ]
                                                              )
                                                              ->one() ) === null
                            ) {
                                copy($source_image, Yii::getAlias('@productsDir') . "/" . $foto);
                                $productImage = new ProductImage();
                                $productImage->product_id = $_product->product_id;
                                $productImage->image = $foto;
                                $productImage->save();
                            }
                        }
                    }
                }
                
                // нужно для проставления характеристик относящихся к модификациям
                $MOD_ARRAY = [];
                
                for ($i = 14; $i < count($data); $i++) {
                    if (!empty ( $data[ $i ] )) {
                        $mod_arr = explode('=', $data[ $i ]);
                        $mod_art = $mod_arr[ 0 ];
                        $variant_filters = explode('*', $mod_arr[ 1 ]);
                        $mod_color = $mod_arr[ 2 ];
                        $mod_image = $mod_arr[ 3 ];
                        $mod_stock = isset( $mod_arr[ 4 ] ) ? $mod_arr[ 4 ] : 1;
                        $mod_cost = isset( $product_cost ) ? floatval($product_cost) : 0;
                        $mod_old_cost = floatval($product_cost_old);
                        
                        // Check product variant
                        if (( $_productVariant = ProductVariant::find()
                                                               ->andFilterWhere([ 'sku' => $mod_art ])
                                                               ->andFilterWhere(
                                                                   [ 'product_id' => $_product->product_id ]
                                                               )
                                                               ->one() ) === null
                        ) {
                            $_productVariant = new ProductVariant();
                            $_productVariant->product_id = $_product->product_id;
                        }
                        $_productVariant->product_unit_id = 1;
                        
                        $_productVariant->sku = $mod_art;
                        $_productVariant->price = $mod_cost;
                        $_productVariant->price_old = $mod_old_cost;
                        $_productVariant->stock = $mod_stock;
                        
                        $product_variant_type_name = '';
                        if (!empty ( $mod_color )) {
                            $product_variant_type_name = 'Цвет';
                            $_productVariant->name = $mod_color;
                        }
                        
                        if (!empty ( $variant_filters )) {
                            
                            $variants_options = $this->saveFilters($variant_filters, 1, $category_id);
                            
                        }
                        
                        if (isset( $variants_options ) && !empty( $variants_options )) {
                            $_productVariant->options = $variants_options;
                        }
                        
                        // ===== Set variant type ====
                        if ($product_variant_type_name) {
                            if (( $product_variant_type = ProductVariantType::find()
                                                                            ->filterWhere(
                                                                                [ 'name' => $product_variant_type_name ]
                                                                            )
                                                                            ->one() ) !== null
                            ) {
                                $_productVariant->product_variant_type_id = $product_variant_type->product_variant_type_id;
                            } else {
                                $product_variant_type = new ProductVariantType();
                                $product_variant_type->name = $product_variant_type_name;
                                $product_variant_type->save();
                                $_productVariant->product_variant_type_id = $product_variant_type->product_variant_type_id;
                            }
                        }
                        
                        $_productVariant->save();
                        
                        $MOD_ARRAY[] = $_productVariant->product_variant_id;
                        
                        if ($mod_image) {
                            $source_image = Yii::getAlias('@productsDir') . '/' . urlencode($mod_image);
                            if (file_exists($source_image)) {
                                if (( $variantImage = ProductImage::find()
                                                                  ->andFilterWhere([ 'image' => $mod_image ])
                                                                  ->andFilterWhere(
                                                                      [ 'product_variant_id' => $_productVariant->product_variant_id ]
                                                                  )
                                                                  ->one() ) === null
                                ) {
                                    //                                copy($source_image, Yii::getAlias('@productsDir') . "/" . $mod_image);
                                    $variantImage = new ProductImage();
                                    $variantImage->product_id = $_product->product_id;
                                    $variantImage->product_variant_id = $_productVariant->product_variant_id;
                                    $variantImage->image = $mod_image;
                                    $variantImage->save();
                                }
                            }
                        }
                    }
                }
                
                if (!empty ( $filters )) {
                    
                    $options = $this->saveFilters($filters, 0, $category_id);
                    
                }
                
                if (isset( $options ) && !empty( $options )) {
                    $_product->options = $options;
                }
                
                $_product->save();
                
                $result_items[] = "Product {$_product->name} #{$_product->product_id} saved (" . ( $is_new_product ? 'new product' : 'exists product' ) . ")" . " (строка $j)";
            }
            
            $result = [
                'end'       => feof($handle),
                'from'      => ftell($handle),
                'totalsize' => $filesize,
                'items'     => $result_items,
            
            ];
            
            fclose($handle);
            
            if ($result[ 'end' ]) {
                unlink(Yii::getAlias('@uploadDir') . '/' . Yii::getAlias('@uploadFileProducts'));
            }
            unlink(Yii::getAlias('@uploadDir/goProducts.lock'));
            return $result;
        }
        
        private function getProductsFile($file_type)
        {
            $filename = Yii::getAlias('@uploadDir') . '/' . Yii::getAlias('@' . $file_type);
            if (!is_file($filename)) {
                $this->errors[] = "File $filename not found";
                return false;
            }
            return fopen($filename, 'r');
        }
        
        private function saveNotFoundRecord(array $line, $filename)
        {
            $str = implode(';', $line) . "\n";
            $str = iconv("UTF-8//TRANSLIT//IGNORE", "windows-1251", $str);
            
            $fg = fopen(Yii::getAlias('@uploadDir') . '/' . $filename, 'a+');
            fputs($fg, $str);
            fclose($fg);
        }
        
        /**
         * @param $filters       array of filters like [['pol'='мужской'],['god' = '2013'],['volume'='25
         *                       л']*['size'='49 x 30 x 20см'],['composition'='600D полиэстер']]
         * @param $level         0 for products and 1 for product variant
         * @param $catalog_names array catalogs id
         *
         * @return array
         */
        private function saveFilters($filters, $level, $catalog_names)
        {
            $options = [];
            foreach ($filters as $filter) {
                
                preg_match_all('/\[(.*):(.*)\]/', $filter, $filter);
                
                if (empty( $filter[ 1 ][ 0 ] )) {
                    continue;
                }
                $filter_name = trim($filter[ 1 ][ 0 ]);
                
                $taxGroup = TaxGroup::find()
                                    ->where([ 'alias' => $filter_name ])
                                    ->one();
                if (!$taxGroup instanceof TaxGroup) {
                    $taxGroup = new TaxGroup();
                    $taxGroup->alias = $filter_name;
                    $taxGroup->level = $level;
                    $taxGroup->name = $filter_name;
                    $taxGroup->module = 'string';
                    $taxGroup->hierarchical = false;
                    $taxGroup->categories = $catalog_names;
                    $taxGroup->is_filter = false;
                    $taxGroup->save();
                }
                
                $filters_options = explode(',', $filter[ 2 ][ 0 ]);
                
                foreach ($filters_options as $filter_options) {
//                    $parsed_filter = $this->parseFilter($filter_options);
                    $value = null;
//                    if ($parsed_filter !== false) {
                        $value = TaxValueString::find()
                                               ->innerJoinWith('taxOption')
//                                               ->andWhere([ 'tax_option.alias' => $parsed_filter[ 2 ] ])
                                                ->andWhere([ 'value' => $filter_options ])
                                               ->andWhere([ 'tax_option.tax_group_id' => $taxGroup->tax_group_id ])
                                               ->one();
//                    }
                    
                    if (!$value instanceof TaxValueString) {
                        // Create option
                        $option = new TaxOption();
                        $option->tax_group_id = $taxGroup->tax_group_id;
//                        if($parsed_filter !== false) {
//                            $option->name = $parsed_filter[1];
//                            $option->alias = $parsed_filter[2];
//                        } else {
                            $option->name = $filter_options;
//                        }
                        $option->save();
                        
                        $value = new TaxValueString();
                        $value->tax_option_id = $option->tax_option_id;
                        $value->value = $filter_options;
                        $value->save();
                        
                        $option->default_value = $value->tax_value_id;
                        $option->save();
                    }
                    $options[] = $value->tax_option_id;
                    
                }
                
            }
            
            return $options;
        }
        
//        private function parseFilter($filter)
//        {
//            $regex = '/^(.+)\(#(.+)#\)$/';
//            if (preg_match($regex, $filter, $result)) {
//                return $result;
//            } else {
//                return false;
//            }
//        }
    }