<?php

namespace App\Backend;

class EcommerceBackend extends BaseBackend
{
    private $_product = null;
    private $_order = null;
    public function __construct()
    {
        parent::__construct('Order');
        $this->_product = new ProductBackend();
        $this->_order = new OrderBackend();
    }

    final public function getOrderBackend()
    {
        $this->_order;
    }
    final public function getProductBackend()
    {
        $this->_product;
    }

    //초기선언부--------
    //Title Field
    public function getTitleField()
    {
        return "product_uid";
    }
    //Form Fields
    public function getFields(string $action = ""): array
    {
        $fields = ['product_uid', "quantity", "price"];
        switch ($action) {
            default:
                return $fields;
                break;
        }
    }
    public function getFieldFilters(): array
    {
        return ['product_uid', "user_uid"];
    }
    public function getFieldBatchFilters(): array
    {
        return ["status"];
    }
    public function getFieldRule(string $field, array $rules, string $action = ""): array
    {
        switch ($field) {
            case $this->getTitleField():
            case "product_uid":
                $rules[$field] = "required|regex_match[/^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}/]";
                break;
            case 'quantity':
            case 'price':
                $rules[$field] =  "required|numeric";
                break;
            default:
                throw new \Exception(__FUNCTION__ . "에서 오류발생: Field명:{$field}는 사용할수없습니다.");
                break;
        }
        return $rules;
    }
    public function getFieldRules(array $fields, string $action)
    {
        $rules = array();
        foreach ($fields as $field) {
            $rules = $this->getFieldRule($field, $rules, $action);
        }
        return $rules;
    }
    //Entity값 가져오기
    public function getEntity($uid)
    {
        throw new \Exception(__FUNCTION__ . "에서 오류발생: 사용할수없습니다.");
    }
    public function getEntitys($condition)
    {
        throw new \Exception(__FUNCTION__ . "에서 오류발생: 사용할수없습니다.");
    }
    //-------초기선언부

    //장바구니에 담기
    public function addCart(string $product_uid, int $quantity, int $price)
    {
        $product = $this->_product->getEntity($product_uid);
        $this->_product->addCart($product, $quantity, $price);
        $this->_order->addCart($product, $quantity, $price);
    }
}