<?php

namespace App\Admin\Imports;

use App\Exceptions\ImportException;
use Box\Spout\Reader\Common\Creator\ReaderEntityFactory;
use Illuminate\Support\Facades\Storage;
use App\Models\{ProductSpu, ProductCategory, ProductGroup};
use Illuminate\Support\Str;
use App\Models\ProductSku;
use App\Models\Store\{Store, ProductSku as StoreProductSku};

class StoreProduct
{
    public function load($file)
    {
        $reader = ReaderEntityFactory::createXLSXReader();
        $reader->open($file);

        foreach ($reader->getSheetIterator() as $sheet) {
            foreach ($sheet->getRowIterator() as $num => $row) {
                if ($num === 1) {
                    continue;
                }
                $cells = $row->toArray();

                $index = 0;
                $storeName = $cells[$index];// 店铺名称
                $goodsName = $cells[++$index];// 商品名称
                $goodsTitle = $cells[++$index];// 商品副标题
                $categoryName = $cells[++$index];// 分类名称
                $goodsImage = $cells[++$index];// 商品图片
                $salePrice = $cells[++$index];// 销售价
                $marketPrice = $cells[++$index];// 市场价
                $costPrice = $cells[++$index];// 成本价
                $vipPrice = $cells[++$index];// 会员价
                $saleValue = $cells[++$index];// 销售值
                // 属性加价
                // 颜色[远峰蓝:0,石墨色:0,银色:0,金色:0,苍岭绿色:0]
                $rowAttrs = $cells[++$index];
                // 规格展示
                // 主体[上市月份:9月,品牌:Apple]
                $rowSpecs = $cells[++$index];
                $shipTemplate = $cells[++$index];// 运费模板
                $goodsWeight = $cells[++$index];// 商品重量(克)
                // 详细描述
                // https://qiniu.abcdefg.fun/banner/banner4.png,https://qiniu.abcdefg.fun/banner/banner5.png
                $goodsContent = $cells[++$index];

                $stock = $cells[++$index];// 库存

                $store = Store::where(['title' => $storeName])->firstOrFail();
                
                $goods = [
                    'name' => $goodsName,
                    'subtitle' => $goodsTitle,
                    'shipping_template_id' => 1,
                ];
                $category = ProductCategory::where('name', $categoryName)->firstOrFail();
                $goods['category_id'] = $category->id;

                // 图片组
                if ($goodsImage) {
                    if (Str::startsWith($goodsImage, ['http://', 'https://'])) {
                        $images = explode(',', $goodsImage);
                    } else {
                        $images = $this->getImageUrlFromPath($goodsImage);
                    }
                    if (count($images) > 0) {
                        $goods['cover'] = $images[0];
                        $goods['images'] = $images;
                    }
                }

                // 运费模板
                if ($shipTemplate) {
                    $goods['shipping_template_id'] = $shipTemplate;
                }
                // 重量
                if ($goodsWeight) {
                    $goods['weight'] = $goodsWeight;
                }
                // 详细描述
                if ($goodsContent) {
                    $description = '';
                    foreach(explode(',', $goodsContent) as $item) {
                        $description .= '<p><img src="'.$item.'"/></p>';
                    }
                    $goods['description'] = $description;
                }

                $goods = array_merge($goods, [
                    'sell_price' => $salePrice * 100,
                    'market_price' => $marketPrice * 100,
                    'cost_price' => $costPrice * 100,
                    'vip_price' => $vipPrice * 100,
                    'sales_value' => $saleValue,
                    'stock' => $stock,
                ]);

                $product = ProductSpu::updateOrCreate(['name' => $goods['name']],$goods);

                // 属性规格
                if ($rowAttrs) {
                    $format_specs = $this->formatAttr($rowAttrs);
                    $format_attrs = $this->formatAttr($rowSpecs);
                    $spec_group = $this->getSpec($cells[0], $rowAttrs, $rowSpecs);

                    $attrs = [];
                    foreach($spec_group->attrs as $index => $item) {
                        $attr = ['name' => $item['title'], 'attrs' => []];
                        foreach(explode(PHP_EOL, $item['value']) as $value) {
                            array_push($attr['attrs'], ['name' => $value, 'value' => data_get($format_attrs, "$index.values.$value")]);
                        }
                        array_push($attrs, $attr);
                    }
                    $product->update(['attrs' => $attrs]);

                    $specs = [];
                    $product->specs()->delete();
                    foreach($spec_group->specs as $index => $item) {
                        $spec = ['name' => $item['title'], 'items' => []];
                        foreach(explode(PHP_EOL, $item['value']) as $value) {
                            array_push($spec['items'], ['name' => $value, 'value' => data_get($format_specs, "$index.values.$value")]);
                        }
                        array_push($specs, $spec);
                    }
                    $product->specs()->createMany($specs);
                }

                // 清空现有的sku, 重新添加
                StoreProductSku::where('store_id', $store->id)->whereIn('product_sku_id', $product->skus->pluck('id'))->delete();
                $product->skus()->delete();
                ProductSku::createBySpu($product);

                // 将sku 添加到门店
                $skuList = $product->skus()->get();
                $skus = [];
                foreach($skuList as $sku) {
                    array_push($skus, ['amount' => $stock, 'product_sku_id' => $sku->id, 'status' => 1, 'store_id' => $store->id]);
                }
                StoreProductSku::insert($skus);
            }
        }

        $reader->close();
    }

    protected function getImageUrlFromPath($dir)
    {
        $disk = Storage::disk();
        $files = $disk->files($dir);
        $images = [];

        foreach($files as $filename) {
            array_push($images, $disk->url($filename));
        }

        return $images;
    }

    protected function getSpec($name, $specs, $attrs)
    {
        if (Str::contains($specs, ':')) {
            // 创建新的规格
            $spec = ProductGroup::updateOrCreate([
                'name' => $name
            ], [
                'attrs' => $this->formatGroupAttr($this->formatAttr($attrs)),
                'specs' => $this->formatGroupAttr($this->formatAttr($specs))
            ]);
        } else {
            $spec = ProductGroup::where('name', $specs)->firstOrFail();
        }

        return $spec;
    }

    /**
     * 颜色[灰色:0,银色:0]
     * 尺寸[13寸:0,14寸:500,16寸:1000]
     * 处理器[M1:0,M1 Pro:1000,M1 Max:1500]
     * 内存[8G:0,16G:1000,32G:2000]
     * 硬盘[256G:0,512G:1000,1TB:2000]
     * 
     * [
     *   ['name' => '颜色', 'values' => ['灰色' => 0, '银色' => 0]],
     *   ['name' => '尺寸', 'values' => ['13寸' => 0, '14寸' => 500, '16寸' => '1000']]
     *   ...
     * ]
     */
    protected function formatAttr($attrs)
    {
        $attr_data = [];
        if (!Str::contains($attrs, ':')) {
            return $attr_data;
        }
        foreach(explode("\n", $attrs) as $item) {
            $name = explode('[', $item)[0];
            $attr_values = [];
            foreach(explode(',', Str::between($item, '[', ']')) as $item1) {
                $item1_explode = explode(':', $item1);
                $attr_values[$item1_explode[0]] = $item1_explode[1];
            }
            array_push($attr_data, ['name' => $name, 'values' => $attr_values]);
        }

        return $attr_data;
    }

    protected function formatGroupAttr($data)
    {
        $list = [];
        foreach($data as $item) {
            array_push($list, ['title' => $item['name'], 'value' => implode(PHP_EOL, array_keys($item['values']))]);
        }
        return $list;
    }
}