<?php

namespace App\Http\Controllers\Fo;

use App\Enums\Order\OrderProcess;
use App\Http\Controllers\Controller;
use App\Models\Order;
use App\Models\OrderLine;
use Carbon\Carbon;
use Gloudemans\Shoppingcart\Facades\Cart;
use Illuminate\Support\Facades\Auth;
use Illuminate\Support\Facades\Session;
use Illuminate\Validation\ValidationException;

class OrderController extends Controller
{
    // * --- TUNNEL DE COMMANDE ---
    /**
     * Récapitualtif du panier
     *
     * @return \Illuminate\Contracts\View\View
     */
    public function basketRecap()
    {
        $this->assertDoesNotHaveEmptyBasket();
        $this->setOrderProcessStep(OrderProcess::reviewBasket());

        $activestep = 2;

        /** @var \Gloudemans\Shoppingcart\Cart */
        $basket   = app('basket');
        $messages = [];

        $basket = $this->filterBasketKeepOnlyOrderableItems($basket, $messages);

        if (!empty($messages)) {
            Session::flash('warning', \collect($messages)->implode(",\n"));
        }

        $basketItems = $this->basketToList($basket);

        return view('front.order-tunnel.basket-recap', compact(
            'activestep',
            'basket',
            'basketItems'
        ));
    }

    /**
     * Select shipping Mode
     *
     * @return \Illuminate\Contracts\View\View
     */
    public function shippingMode()
    {
        $this->assertDoesNotHaveEmptyBasket();
        $this->setOrderProcessStep(OrderProcess::shippingMethod(), OrderProcess::reviewBasket());

        $deliveyModes = DeliveryMode::availables()->get();

        return view('front.order-tunnel.shipping-mode');
    }

    // * --- FIN TUNNEL DE COMMANDE ---

    /**
     * front
     * Storing order from sales tunnel
     *
     * @return \Illuminate\Http\RedirectResponse
     */
    public function basketRecapSubmit()
    {
        // Save.
        Cart::instance('panier');
        $order = new Order();
        // Generate order ref.
        $order->reference   = $this->generateOrderRef();
        $order->date        = Carbon::now();
        $order->status_id   = 1;
        $order->total       = str_replace(',', '.', str_replace(' ', '', Cart::total()));
        $order->customer_id = Auth::user()->id;

        $order->save();

        // Order_id.
        Cart::instance('panier');
        $cart = Cart::content();
        foreach ($cart as $cartItem) {
            $order_line             = new OrderLine();
            $order_line->order_id   = $order->id;
            $order_line->product_id = $cartItem->model->id;
            $order_line->quantity   = $cartItem->qty;
            // Gross unit price.
            $order_line->unit_price = $cartItem->model->priceHt;
            // Discount per unit.
            $order_line->unit_discount = $cartItem->model->discountAmount;
            // Tax rate for this line.
            $order_line->tax_rate = $cartItem->taxRate;
            // Tax amount par unit.
            $order_line->unit_tax = round(
                (($order_line->unit_price - $order_line->unit_discount) * ($order_line->tax_rate / 100)) * 100
            ) / 100;
            // Discount amount for the line.
            $order_line->total_discount = $order_line->unit_discount * $order_line->quantity;
            // Gross amount for the line.
            $order_line->total_ht = ($order_line->unit_price - $order_line->unit_discount) * $order_line->quantity;
            // Tax amount for the line.
            $order_line->total_tax = $order_line->unit_tax * $order_line->quantity;
            // Total TTC avec remises de la ligne.
            $order_line->total_ttc = $order_line->total_ht + $order_line->total_tax;

            $order_line->save();
        } //end foreach

        // Empty cart.
        Cart::destroy();
        // Then redirect.
        return redirect()->route('order-tunnel.pick-slot', ['reference' => $order->reference]);
    }

    /**
     * Assert user does not have an empty basket
     * or redirect with warning
     *
     * @return void
     */
    private function assertDoesNotHaveEmptyBasket(): void
    {
        /** @var \Gloudemans\Shoppingcart\Cart */
        $basket = app('basket');

        if (!$basket->count()) {
            \redirect()->route('home')
            ->with('warning', trans('Vous n\'avez aucun produit dans votre panier'))
            ->throwResponse();
        }
    }

    /**
     * Validate Process step
     *
     * @param \App\Enums\Order\OrderProcess      $step
     * @param \App\Enums\Order\OrderProcess|null $assertDid
     * @return void
     * @throws \Illuminate\Validation\ValidationException If previous was not done.
     */
    private function setOrderProcessStep(OrderProcess $step, OrderProcess $assertDid = null): void
    {
        if ($assertDid) {
            if (!Session::get('PreviousOrderStep')) {
                Session::put('PreviousOrderStep', collect());
            }
            /** @var \Illuminate\Support\Collection */
            $previousSteps = Session::get('PreviousOrderStep');
            if (Session::get('OrderStep') < $step) {
                /** @var \App\Enums\OrderProcess */
                $previousStep = Session::get('OrderStep');
                $previousSteps->put($previousStep->value, $previousStep);
                Session::put('PreviousOrderStep', $previousSteps);
            }
            if (!$previousSteps->count()) {
                \redirect()->route('home')
                ->with('warning', trans('Vous devez d\'abord valider votre panier'))
                ->throwResponse();
            }
            if (!$previousSteps->contains($assertDid)) {
                throw ValidationException::withMessages(['Étape précédente requise']);
            }
        } //end if

        Session::put('OrderStep', $step);
    }
}