<?php


namespace app\api\service;


use app\BaseService;
use app\common\model\ActivityProductModel;
use app\common\model\ConfigModel;
use app\common\model\ProductModel;
use app\common\model\StoreProductModel;

class ProductService extends BaseService
{

    private $productModel;
    private $storeProductModel;
    private $activityProductModel;
    private $configModel;


    public function __construct()
    {
        $this->productModel = new ProductModel();
        $this->configModel = new ConfigModel();
        $this->storeProductModel = new StoreProductModel();
        $this->activityProductModel = new ActivityProductModel();
    }

    public function search($store_id,$bar_code = null, $product_name = null, $page = 1, $size = 10) {
        $storeProducts = $this->storeProductModel->search([
            'store_id' => $store_id,
            'bar_code' => $bar_code,
            'product_name' => $product_name,
            'page' => $page,
            "size" => $size
        ]);
        $items = $storeProducts->items();
        $config = $this->configModel->findConfig();
        $productIds = array_map(function ($data) {
            return $data['product_id'];
        }, $items);
        $activityProducts = $this->activityProductModel->fetchByProductIds($productIds)->toArray();
        foreach ($items as &$item) {
            $aProducts = array_filter($activityProducts, function ($aProduct) use ($item) {
                return $aProduct['product_id'] == $item['product_id'];
            });
            $res = $this->compare($item['product']['real_price'] ?? 0, $aProducts);
            $item['product']['real_price'] = fixed2Float($res['min_num']);
            $item['activity'] = $res['item'];
            $item['product']['tax_rate'] = $item['product']['tax_rate'] > 0 ? $item['product']['tax_rate'] : $config->tax_rate;
        }
        return [$items, $storeProducts->total()];
    }


    private function compare($num, $array) {
        $min_num = $num;
        $index = null;
        if($num > 0) {
            foreach ($array as $key => $el) {
                $now_price = $num;
                if($el['type'] == 1) {
                    $now_price = $num - $el['reduced_price'];
                } else {
                    if($el['discount'] > 0) {
                        $now_price = $num - ($num * ($el['discount'] / 100));
                    }
                }
                if($min_num == null) {
                    $min_num = $now_price;
                } else {
                    if($now_price < $min_num) {
                        $min_num = $now_price;
                        $index = $key;
                    }
                }
            }
        }
        return ['min_num' => $min_num, 'item' => $index == null ? null : $array[$index]];
    }

}