<?php

namespace App\Http\Controllers\Shop;

use App\Http\Controllers\Controller;
use App\Models\ShippingRate;
use App\Services\CartService;
use App\Services\OrderService;
use Illuminate\Http\Request;

class CheckoutController extends Controller
{
    public function __construct(
        private CartService $cart,
        private OrderService $orderService,
    ) {}

    public function index()
    {
        if ($this->cart->count() === 0) {
            return redirect()->route('cart.index')->with('error', 'Ihr Warenkorb ist leer.');
        }
        $subtotal     = $this->cart->subtotal();
        $shippingRate = ShippingRate::forCart($subtotal);
        $shippingCost = $shippingRate ? $shippingRate->getCostForTotal($subtotal) : 0;
        $total        = $subtotal + $shippingCost;
        $userAddresses = auth()->user()?->addresses ?? collect();

        return view('shop.checkout.index', compact('subtotal', 'shippingCost', 'total', 'userAddresses'));
    }

    public function storeAddress(Request $request)
    {
        $rules = [
            'billing.first_name' => 'required|string|max:100',
            'billing.last_name'  => 'required|string|max:100',
            'billing.street'     => 'required|string|max:255',
            'billing.zip'        => 'required|string|max:10',
            'billing.city'       => 'required|string|max:100',
            'billing.country'    => 'required|string|max:2',
            'payment_method'     => 'required|in:prepayment,invoice',
            'agb'                => 'accepted',
        ];

        if (!auth()->check()) {
            $rules['email'] = 'required|email';
        }

        if ($request->input('shipping_same') !== '1') {
            $rules['shipping.first_name'] = 'required|string|max:100';
            $rules['shipping.last_name']  = 'required|string|max:100';
            $rules['shipping.street']     = 'required|string|max:255';
            $rules['shipping.zip']        = 'required|string|max:10';
            $rules['shipping.city']       = 'required|string|max:100';
            $rules['shipping.country']    = 'required|string|max:2';
        }

        $data = $request->validate($rules);

        if ($request->input('shipping_same') === '1') {
            $data['shipping'] = $data['billing'];
        }

        $data['email'] = $request->input('email');

        session(['checkout_data' => $data]);

        return redirect()->route('checkout.confirm');
    }

    public function payment()
    {
        return redirect()->route('checkout.index');
    }

    public function confirm(Request $request)
    {
        $checkoutData = session('checkout_data');
        if (!$checkoutData || $this->cart->count() === 0) {
            return redirect()->route('checkout.index');
        }

        if ($request->isMethod('get')) {
            $items        = $this->cart->get();
            $subtotal     = $this->cart->subtotal();
            $shippingRate = ShippingRate::forCart($subtotal);
            $shippingCost = $shippingRate ? $shippingRate->getCostForTotal($subtotal) : 0;
            $total        = $subtotal + $shippingCost;
            return view('shop.checkout.confirm', compact('checkoutData', 'items', 'subtotal', 'shippingCost', 'total'));
        }

        $order = $this->orderService->createFromSession(
            $checkoutData,
            $checkoutData['payment_method']
        );

        session()->forget('checkout_data');

        return redirect()->route('checkout.thankyou', $order->order_number);
    }

    public function thankyou(string $order)
    {
        $order = \App\Models\Order::where('order_number', $order)->firstOrFail();
        return view('shop.checkout.thankyou', compact('order'));
    }
}