<?php

namespace App\Controllers\Front;

use App\Entities\OrderEntity;
use App\Models\OrderModel;
use App\Models\ProductModel;
use CodeIgniter\HTTP\RequestInterface;
use CodeIgniter\HTTP\ResponseInterface;
use Psr\Log\LoggerInterface;

class OrderController extends FrontController
{
    private $_productModel = null;
    public function initController(RequestInterface $request, ResponseInterface $response, LoggerInterface $logger)
    {
        $this->_model = new OrderModel($this->getFields());
        parent::initController($request, $response, $logger);
        $this->_viewDatas['title'] = lang($this->_model->getClassName() . '.title');
        $this->_viewPath .= strtolower($this->_model->getClassName());
        helper($this->_model->getClassName());
    }

    final public function getFields(string $action = ""): array
    {
        $fields = ['product_uid', "quantity", "price", "status"];
        switch ($action) {
            case "index":
            case "excel":
            case "view":
                return ['product_uid', "quantity", "price", "status", "updated_at", "created_at"];
                break;
            default:
                return $fields;
                break;
        }
    }
    final public function getFieldFilters(): array
    {
        return ['product_uid', "status"];
    }
    final public function getFieldBatchFilters(): array
    {
        return ["status"];
    }

    //세션에 장바구니에 담긴 Order UID를 추가해준다.
    private function setCart(OrderEntity $entity)
    {
        $order_uids = $this->_session->get(SESSION_NAMES['CART']) ?: array();
        $this->_session->set(SESSION_NAMES['CART'], [...$order_uids, $entity->getPrimaryKey()]);
    }
    protected function insert_process()
    {
        $this->_productModel ?: new ProductModel();
        //상품정보 가져오기
        $product = $this->_productModel->getEntity([$this->_model->getPrimaryKey() => $this->_viewDatas['fieldDatas']['product_uid']]);
        //구매 금액 비교
        $price = ($product->getPrice() - $product->getSale()) * $this->_viewDatas['fieldDatas']['quantity'];
        if ($price != $this->_viewDatas['fieldDatas']['price']) {
            throw new \Exception("실 상품금액{$price} 와 구매금액{$this->_viewDatas['fieldDatas']['price']}이 서로 다릅니다.");
        }
        //상품재고 줄이기,Order(장바구니)에넣기,Order(장바구니)번호 세션넣기
        $this->_productModel->decreaseStock($product, $this->_viewDatas['fieldDatas']['quantity']);
        //장바구니에 넣기
        $entity = parent::insert_process();
        //Cart세션정의
        $this->setCart($entity);
        return $entity;
    }
    public function insert()
    {
        $msg = "";
        try {
            //Transaction 시작
            $this->_model->transStart();
            $this->insert_process();
            //Transaction Commit
            $this->_model->transComplete();
            $msg = sprintf(
                "%s에서 해당 상품 %s개를 장바구니에 담았습니다.",
                $this->_viewDatas['title'],
                $this->_viewDatas['fieldDatas']['quantity']
            );
            return redirect()->to($this->_session->getFlashdata(SESSION_NAMES['RETURN_URL']));
        } catch (\Exception $e) {
            //Transaction Rollback
            $this->_model->transRollback();
            log_message("error", $e->getMessage());
            $msg = sprintf(
                "%s에서 다음 오류로 인해 장바구니에 담기를 실패하였습니다.\n%s",
                $this->_viewDatas['title'],
                $e->getMessage()
            );
            return redirect()->back()->withInput();
        } finally {
            $this->_session->setFlashdata("return_message", $msg);
        }
    }

    protected function index_setCondition()
    {
        parent::index_setCondition();
        //세션에 Cart정보(order_uids)가 있으면
        $uids = $this->_session->get(SESSION_NAMES['CART']) ?: array('NONE');
        //또는 Login했으면 사용자정보(user_uid)에 맞는 Order정보 가져오기
        if ($this->_session->get(SESSION_NAMES['ISLOGIN'])) {
            $this->_model->where('user_uid', $this->_session->get(SESSION_NAMES['AUTH'])[AUTH_FIELDS['ID']]);
        } elseif (count($uids)) {
            $this->_model->whereIn('uid', $uids);
        }
    }
}