<?php
declare (strict_types = 1);

namespace app\admin\controller\v1;

use app\admin\model\v1\ProductModel;
use app\admin\model\v1\ProductParamsModel;
use app\admin\model\v1\ProductRelatedModel;
use app\admin\model\v1\ProductSkuAttrModel;
use app\admin\model\v1\ProductSkuModel;
use app\admin\validate\v1\ProductValidate;

/**
 * 产品管理控制器
 */
class Product
{
    // 分页列表
    public function index()
    {
        $param = request()->get([
            'name',
            'spu',
            'category_id',
            'created_at',
            'is_show',
            'page/d' => 1, 
            'size/d' => 10
        ]);

        $validate = new ProductValidate();
        if (!$validate->scene('index')->check($param)) {
            return error($validate->getError());
        }

        $products = ProductModel::field([
                'id',
                'name',
                'cover_image',
                'spu',
                'category_id',
                'sort',
                'is_new',
                'is_hot',
                'is_sale',
                'is_show',
                'stock_qty',
                'status',
                'created_at'
            ])
            ->with('category')
            ->language(request()->lang_id)
            ->withSearch(['name_nullable', 'spu_nullable', 'created_at_nullable'], [
                'name_nullable'       => $param['name']??null,
                'spu_nullable'        => $param['spu']??null,
                'created_at_nullable' => !empty($param['created_at']) ? explode(',', $param['created_at']) : null,
            ])
            ->categoryNullable($param['category_id']??null)
            ->isShowNullable(isset($param['is_show']) ? (bool)$param['is_show'] : null)
            ->order(['sort' => 'asc', 'id' => 'desc'])
            ->paginate([
                'list_rows' => $param['size'],
                'page'      => $param['page'],
            ])
            ->bindAttr('category', ['category_name' => 'name'])
            ->hidden(['category_id', 'category'])
            ?->each(fn($item) => $item->cover_image = thumb($item->cover_image));

        return success('获取成功', $products);
    }

    // 产品详情
    public function read()
    {
        $product = ProductModel::with(['category' => function($query) {
                $query->field(['id', 'name' => 'category_name']);
            }])
            ->withoutField([
                'language_id',
                'created_at',
                'updated_at',
                'deleted_at'
            ])
            ->bypk(request()->param('id'))
            ->find()
            ->bindAttr('category', ['category_name'])
            ->hidden(['category']);
        if (empty($product)) {
            return error('产品不存在');
        }

        // 获取产品参数
        $params = [];
        $product_params = ProductParamsModel::productId($product->id)->select();
        foreach ($product_params as $val) {
            $params[] = implode(":", [$val->name, $val->value]);
        }
        $product->params = implode(PHP_EOL, $params);

        // 获取sku数据
        $product->skus = ProductSkuModel::withoutField(['created_at', 'updated_at'])
            ->with(['attrs' => function($query) {
                $query->hidden(['sku_id']);
            }])
            ->productId($product->id)
            ->select()
            ->hidden(['id', 'product_id']);

        // 获取关联产品
        $product->related = ProductRelatedModel::field([
                'related_product_id', 
                'sort'
            ])
            ->with(['product' => function($query) {
                $query->field(['id', 'spu']);
            }])
            ->productId($product->id)
            ->select()
            ->bindAttr('product', ['spu'])
            ->hidden(['product']);

        return success('获取成功', $product);
    }

    // 更新
    public function update()
    {
        $id  = request()->param('id');
        $put = request()->put([
            'category_id',
            'spu',
            'name',
            'short_name',
            'cover_image',
            'desc',
            'video_img',
            'video_url',
            'is_sale',
            'is_new',
            'is_hot',
            'is_show',
            'sort',
            'detail',
            'params'  => '',
            'skus'    => '',
            'related' => '',
            'seo_title',
            'seo_keywords',
            'seo_desc'
        ]);
        $put = array_merge(
            $put, 
            ['skus' => json_decode($put['skus'], true)], 
            ['related' => json_decode($put['related'], true)],
        );

        $validate   = new ProductValidate();
        $check_data = array_merge($put, ['id' => $id, 'language_id' => request()->lang_id]);
        if (!$validate->scene('update')->check($check_data)) {
            return error($validate->getError());
        }

        $product = ProductModel::bypk($id)->find();
        if (is_null($product)) {
            return error('请确认操作对象是否存在');
        }
        if (!$product->save($put)) {
            return error('操作失败');
        }

        // 更新产品参数
        if ($put['params'] != "") {
            ProductParamsModel::productId($id)->delete();
            if (preg_match_all('/(\S+):(.[^\s]+)/', $put['params'], $match_result)) {
                $params = [];
                for ($i = 0; $i < count($match_result[0]); $i++) {
                    $params[] = [
                        'product_id' => $id,
                        'name'       => $match_result[1][$i],
                        'value'      => $match_result[2][$i]
                    ];
                }
                if (!empty($params)) {
                    ProductParamsModel::insertAll($params);
                }
            }
        }

        // 更新SKU
        if (!empty($put['skus'])) {
            $skus        = [];
            $attrs_group = [];
            foreach ($put['skus'] as $val) {
                $skus[] = [
                    'product_id'  => $id,
                    'sku'         => $val['sku'],
                    'main_image'  => $val['main_image'],
                    'photo_album' => $val['photo_album'],
                    'sort'        => $val['sort']??0
                ];
                foreach ($val['attrs'] as $v) {
                    $attrs_group[$val['sku']][] = [
                        'attr_id'    => $v['attr_id'],
                        'attr_value' => $v['attr_value']
                    ];
                }
            }
            if (!empty($skus)) {
                $sku_model = new ProductSkuModel;
                // 删除原有SKU
                $sku_model->productId($id)->delete();
                // 添加SKU
                $save_ret = $sku_model->saveAll($skus);
                if (!$save_ret->isEmpty()) {
                    $sku_map = [];
                    foreach ($save_ret as $val) {
                        $sku_map[$val->sku] = $val->id;
                    }
                    $attrs = [];
                    foreach ($attrs_group as $sku => $sku_attrs) {
                        if (empty($sku_map[$sku])) {
                            unset($attrs_group[$sku]);
                            continue;
                        }
                        foreach ($sku_attrs as $k => $v) {
                            $attrs[] = array_merge($v, ['sku_id' => $sku_map[$sku]]);
                        }
                    }
                    (new ProductSkuAttrModel)->saveAll($attrs);
                }
            }
        }

        // 更新关联产品
        if (!empty($put['related'])) {
            // 删除原有关联产品
            ProductRelatedModel::productId($id)->delete();
            // 添加关联产品
            $related = [];
            foreach ($put['related'] as $val) {
                $related[] = [
                    'product_id'         => $id,
                    'related_product_id' => $val['related_product_id'],
                    'sort'               => $val['sort']
                ];
            }
            if (!empty($related)) {
                ProductRelatedModel::insertAll($related);
            }
        }

        return success('操作成功');
    }

    // 设置排序值
    public function sort()
    {
        $id   = request()->param('id');
        $sort = request()->post('sort');

        $product = ProductModel::bypk($id)->find();
        if (empty($product)) {
            return error('请确认操作对象是否存在');
        }
        if ($sort != $product->sort) {
            $product->sort = $sort;
            if (!$product->save()) {
                return error('操作失败');
            }
        }

        return success('操作成功');
    }

    // 上下架操作
    public function updownShelves()
    {
        $id = request()->param('id');
        $product = ProductModel::bypk($id)->find();
        if (empty($product)) {
            return error('请确认操作对象是否存在');
        }

        $product->is_show = (int)!$product->is_show;
        if (!$product->save()) {
            return error('操作失败');
        }

        return success('操作成功');
    }

    // 删除
    public function delete()
    {
        $product = ProductModel::bypk(request()->param('id'))->find();
        if (empty($product)) {
            return error('请确认操作对象是否存在');
        }

        // 软删除
        if (!$product->delete()) {
            return error('操作失败');
        }

        return success('操作成功');
    }

    
    // 导出
    public function export()
    {
        $schema = [
            'id'            => 'ID',
            'category_name' => '分类名称',
            'spu'           => '规格型号',
            'name'          => '产品名称',
            'short_name'    => '简称（产品副标题）',
            'cover_image'   => '产品封面图片',
            'desc'          => '描述',
            'video_img'     => '视频封面图片',
            'video_url'     => '视频地址',
            'is_sale'       => '是否在售',
            'is_new'        => '是否新品',
            'is_hot'        => '是否热销',
            'is_show'       => '上下架状态',
            'stock_qty'     => '库存数量',
            'sort'          => '排序值',
            'detail'        => '产品详情',
            'params'        => '产品参数',
            'related'       => '关联产品',
            'status'        => '状态',
            'seo_title'     => 'seo标题',
            'seo_keywords'  => 'seo关键词',
            'seo_desc'      => 'seo描述',
            'created_at'    => '添加时间',
            'updated_at'    => '最后更新时间'
        ];

        // 获取导出数据
        $data = $this->getExportProductData();

        // 导出
        return xlsx_writer($data, $schema, '产品列表' . date('YmdHis'));
    }
    // 获取产品导出数据
    private function getExportProductData()
    {
        $server = request()->server();
        $image_host = $server['REQUEST_SCHEME'] . "://" . $server['SERVER_NAME'] . config('filesystem.disks.public.url') . '/';
        $param = request()->param([
            'name',
            'spu',
            'category_id',
            'created_at',
            'is_show',
        ]);
        $products = ProductModel::field([
                'id',
                'category_id',
                'spu',
                'name',
                'short_name',
                'CONCAT("' . $image_host . '", `cover_image`)' => 'cover_image',
                'desc',
                'CONCAT("' . $image_host . '", `video_img`)' => 'video_img',
                'CONCAT("' . $image_host . '", `video_url`)' => 'video_url',
                'CASE WHEN is_new = 1 THEN "是" ELSE "否" END' => 'is_new',
                'CASE WHEN is_hot = 1 THEN "是" ELSE "否" END' => 'is_hot',
                'CASE WHEN is_sale = 1 THEN "是" ELSE "否" END' => 'is_sale',
                'CASE WHEN is_show = 1 THEN "上架" ELSE "下架" END' => 'is_show',
                'stock_qty',
                'sort',
                'detail',
                'CASE WHEN status = 1 THEN "启用" WHEN status = -1 THEN "禁用" END' => 'status',
                'seo_title',
                'seo_keywords',
                'seo_desc',
                'created_at',
                'updated_at',
            ])
            ->with('category')
            ->language(request()->lang_id)
            ->withSearch(['name_nullable', 'spu_nullable', 'created_at_nullable'], [
                'name_nullable'       => $param['name']??null,
                'spu_nullable'        => $param['spu']??null,
                'created_at_nullable' => !empty($param['created_at']) ? explode(',', $param['created_at']) : null,
            ])
            ->categoryNullable($param['category_id']??null)
            ->isShowNullable(isset($param['is_show']) ? (bool)$param['is_show'] : null)
            ->order(['id' => 'asc'])
            ->select()
            ->bindAttr('category', ['category_name' => 'name'])
            ->hidden(['category_id', 'category']);

        if (!$products->isEmpty()) {
            // 产品参数
            $product_params = ProductParamsModel::withoutField(['id', 'created_at', 'updated_at'])
                ->productId($products->column('id'))
                ->select();
            if (!$product_params->isEmpty()) {
                $params = [];
                foreach ($product_params as $item) {
                    $params[$item['product_id']][] = $item->name . ':' . $item->value;
                }
                $products->each(function($product) use($params) {
                    if (empty($params[$product->id])) {
                        return;
                    }
                    $product->params = implode(PHP_EOL, $params[$product->id]);
                });
            }

            // 关联产品
            $product_related = ProductRelatedModel::withoutField(['id', 'created_at', 'updated_at'])
                ->with(['product' => function($query) {
                    $query->field(['id', 'spu']);
                }])
                ->productId($products->column('id'))
                ->order(['sort' => 'asc'])
                ->select();
            if (!$product_related->isEmpty()) {
                $related = [];
                foreach ($product_related as $item) {
                    if (!empty($item->product)) {
                        $related[$item['product_id']][] = $item->product->spu;
                    }
                }
                $products->each(function($product) use($related) {
                    if (empty($related[$product->id])) {
                        return;
                    }
                    $product->related = implode(',', $related[$product->id]);
                });
            }
        }
        
        return $products->toArray();
    }
}