<?php
namespace App\Komma\Shop\Checkout;


use App\Komma\Base\Controller;
use App\Komma\Addresses\AddressService;
use App\Komma\Globalization\RegionInfo;
use App\Komma\Shop\Cart\ShoppingCartItemInterface;
use App\Komma\Shop\Cart\ShoppingCartService;
use App\Komma\Shop\Cart\ShoppingCartServiceInterface;
use App\Komma\Shop\Discounts\Discount;
use App\Komma\Shop\Discounts\DiscountTypes;
use App\Komma\Shop\Orders\Kms\OrderMailServiceInterface;
use Illuminate\Database\Eloquent\Collection;
use Illuminate\View\View;

/**
 * Handles the checkout process and the different views
 *
 * Class ShoppingCartService
 * @package App\Komma\Shop\Cart
 */
class CheckoutController extends Controller
{
    /** @var CheckoutServiceInterface $checkoutService */
    private $checkoutService;

    /** @var OrderMailServiceInterface $orderMailService */
    private $orderMailService;

    /** @var AddressService $addressService */
    private $addressService;

    /** @var RegionInfo $regionInfo */
    private $regionInfo;

    /**
     * CheckoutController constructor.
     */
    public function __construct()
    {
        if(\App::runningInConsole()) return;
        parent::__construct();

        $this->checkoutService = app(CheckoutServiceInterface::class);
        $this->orderMailService = app(OrderMailServiceInterface::class);;
        $this->addressService = app(AddressService::class);
        $this->regionInfo = new RegionInfo('NL');

        parent::__construct();
    }

    /**
     * Shows a checkout form
     *
     * return
     */
    public function showCheckoutForm() {
        $shoppingCartService = app(ShoppingCartServiceInterface::class);

        /** @var Collection $addresses */
        $addresses = \Auth::user()->addresses()->get();

        $lastUsedShippingAddress = $this->checkoutService->getLastUsedShippingAddressForUser(\Auth::user());
        $lastUsedInvoiceAddress = $this->checkoutService->getLastUsedInvoiceAddressForUser(\Auth::user());

        $vatTotal = ceil($shoppingCartService->getTotal(true) * 0.21); //We must do ceil here. Try this with example total 32980. times 0.21 = 6925.8. If you don't ceil it to 6926. You are going to lose the .8 in your tax. That MAY be not what we want

        $shoppingCartService->updateDiscounts();
        $couponCodes = $shoppingCartService->getDiscountsByType(DiscountTypes::Coupon);

        return view('shop/pages/checkout/index', [
            'addresses' => $addresses,
            'lastUsedShippingAddress' => $lastUsedShippingAddress,
            'lastUsedInvoiceAddress' => $lastUsedInvoiceAddress,
            'items' => $shoppingCartService->getItems(),
            'total_ex_vat_and_discounts' => $shoppingCartService->getTotal(false),
            'total_ex_vat' => $shoppingCartService->getTotal(true),
            'vat_total' => $vatTotal,
            'total' => $shoppingCartService->getTotal(true) + $vatTotal,
            'total_without_discount' => $shoppingCartService->getTotal(false),
            'total_formatted' => $this->regionInfo->getNumberFormat()->centsToCurrency($shoppingCartService->getTotal(), true, true),
            'regionInfo' => $this->regionInfo,
            'links' => $this->links,
            'applied_codes' => $couponCodes
        ]);
    }

    /**
     * Triggered in response of a push on a checkout button
     * @param CheckoutRequest $checkoutRequest
     * @return \Illuminate\Http\RedirectResponse
     */
    public function checkout(CheckoutRequest $checkoutRequest)
    {
        $shoppingCartService = app(ShoppingCartServiceInterface::class);

        //Add coupon code if needed.
        if(\Input::has('add_coupon')) { //Add coupon button pressed
            $couponCodesBeforeAddedNewOne = $shoppingCartService->getDiscountsByType(DiscountTypes::Coupon);
            $shoppingCartService->addCouponCode(\Input::get('coupon'));
            $couponCodesAfterAddedNewOne = $shoppingCartService->getDiscountsByType(DiscountTypes::Coupon);

            if(count($couponCodesAfterAddedNewOne) == count($couponCodesBeforeAddedNewOne)) { //If the amount of valid coupon codes is the same as before we tried to add one, the coupon code is invalid. Else if would be added.
                return redirect()->back()->withInput()->withErrors(['coupon_code' => __('shop/discounts.coupon_fail')]);
            }

            $checkoutRequest->flash();
            return $this->showCheckoutForm();
        } elseif(\Input::has('delete_coupon')) {
            $shoppingCartService->removeCouponCode(\Input::get('delete_coupon'));
            $checkoutRequest->flash();
            return $this->showCheckoutForm();
        }

        //Create addresses for shipping and invoice.
        $addressForInvoice = $this->addressService->getAddressForInvoiceFromInput();
        $addressForShipping = $this->addressService->getAddressForShippingFromInput();

        $addressForInvoice = $this->addressService->saveAddressForUser($addressForInvoice, \Auth::user());
        $addressForShipping = $this->addressService->saveAddressForUser($addressForShipping, \Auth::user(), $addressForInvoice);

        /** @var ShoppingCartItemInterface[] $items */
        $order = $this->checkoutService->createOrderFromShoppingCartItems($shoppingCartService->getItems(), \Auth::user(), $addressForShipping, $addressForInvoice);
        $this->orderMailService->mailCustomerAboutCurrentOrderStatus($order, \Auth::user());
        $this->orderMailService->mailStaffAboutCurrentOrderStatus($order);

        return $this->checkoutService->startPaymentForOrder($order);
    }

    /**
     * @return View
     */
    public function index()
    {
        return $this->checkoutView();
    }

    /**
     * @return View
     */
    protected function checkoutView(): View
    {
        return view('shop.pages.checkout.index');
    }
}