<?php

namespace App\Http\Controllers\Public;

use App\Http\Controllers\Controller;
use App\Models\QrCode;
use App\Services\Merchant\MerchantSaleService;
use App\Support\Qr\QrTypeCatalog;
use Illuminate\Http\JsonResponse;
use Illuminate\Http\RedirectResponse;
use Illuminate\Http\Request;
use Illuminate\View\View;
use RuntimeException;

class SaleOrderController extends Controller
{
    public function __construct(private MerchantSaleService $sales) {}

    public function store(Request $request, string $shortCode): JsonResponse
    {
        $qrCode = QrCode::query()
            ->where('short_code', $shortCode)
            ->whereIn('type', QrTypeCatalog::storefrontTypes())
            ->where('is_active', true)
            ->firstOrFail();

        if (! $qrCode->acceptsOrders()) {
            return response()->json(['error' => 'This QR code does not accept orders.'], 422);
        }

        if (empty($qrCode->content()['accepts_payment'])) {
            return response()->json(['error' => 'Online payments are not enabled for this storefront.'], 422);
        }

        $validated = $request->validate([
            'customer_name' => ['required', 'string', 'max:120'],
            'customer_email' => ['nullable', 'email', 'max:200'],
            'customer_phone' => ['required', 'string', 'max:30'],
            'shipping_fee' => ['nullable', 'numeric', 'min:0', 'max:10000'],
            'items' => ['required', 'array', 'min:1'],
            'items.*.name' => ['required', 'string', 'max:200'],
            'items.*.price' => ['required', 'numeric', 'min:0'],
            'items.*.qty' => ['required', 'integer', 'min:1', 'max:100'],
        ]);

        try {
            $result = $this->sales->initiateOrder($qrCode, $validated);
        } catch (RuntimeException $e) {
            return response()->json(['error' => $e->getMessage()], 422);
        }

        return response()->json([
            'checkout_url' => $result['checkout_url'],
            'callback_url' => $result['callback_url'],
        ]);
    }

    public function callback(Request $request, string $shortCode): RedirectResponse|View
    {
        $reference = trim((string) $request->query('reference', ''));
        if ($reference === '') {
            return redirect('/q/'.$shortCode)->with('error', 'Missing payment reference.');
        }

        try {
            $order = $this->sales->completeOrder($reference);
        } catch (\Throwable) {
            return redirect('/q/'.$shortCode)->with('order_error', 'Payment could not be verified. Contact the merchant with reference: '.$reference);
        }

        return view('public.qr.order-success', [
            'order' => $order,
            'qrCode' => $order->qrCode,
        ]);
    }
}