<?php

namespace App\Http\Controllers\Public;

use App\Http\Controllers\Controller;
use App\Models\MiniPayment;
use App\Models\QrCode;
use App\Services\Mini\MiniPaymentService;
use App\Support\LadillLink;
use Illuminate\Http\JsonResponse;
use Illuminate\Http\RedirectResponse;
use Illuminate\Http\Request;
use Illuminate\View\View;
use RuntimeException;

class PaymentController extends Controller
{
    public function __construct(private MiniPaymentService $payments) {}

    public function pay(Request $request, string $shortCode): JsonResponse|RedirectResponse
    {
        $qrCode = QrCode::query()
            ->with('user.qrSetting')
            ->where('short_code', $shortCode)
            ->where('type', QrCode::TYPE_PAYMENT)
            ->where('is_active', true)
            ->firstOrFail();

        $validated = $request->validate([
            'amount' => 'required|numeric|min:0.01',
            'customer_phone' => 'nullable|string|max:32',
        ]);

        try {
            $result = $this->payments->initiate($qrCode, $validated);
        } catch (RuntimeException $e) {
            if ($request->expectsJson()) {
                return response()->json(['error' => $e->getMessage()], 422);
            }

            return back()->withInput()->with('error', $e->getMessage());
        }

        if ($request->expectsJson() || $request->ajax()) {
            return response()->json([
                'checkout_url' => $result['checkout_url'],
                'access_code' => $result['access_code'] ?? null,
                'public_key' => $result['public_key'] ?? null,
                'callback_url' => $result['callback_url'] ?? null,
                'reference' => $result['reference'] ?? null,
                'provider' => $result['provider'] ?? null,
            ]);
        }

        // Never send the browser to checkout.paystack.com — reopen the landing
        // with checkout payload so Paystack Inline can run in-page.
        $provider = (string) ($result['provider'] ?? '');
        if ($provider === 'mtn_momo') {
            $waiting = (string) ($result['checkout_url'] ?? '');
            if ($waiting !== '' && str_starts_with($waiting, url('/'))) {
                return redirect()->to($waiting);
            }
        }

        return redirect()
            ->to(url('/q/'.$shortCode))
            ->with('checkout_url', $result['checkout_url'] ?? null)
            ->with('access_code', $result['access_code'] ?? null)
            ->with('public_key', $result['public_key'] ?? null)
            ->with('callback_url', $result['callback_url'] ?? null)
            ->with('provider', $provider !== '' ? $provider : 'paystack')
            ->with('amount', $validated['amount']);
    }

    public function callback(Request $request, string $shortCode): View
    {
        $reference = trim((string) $request->query('reference', ''));
        if ($reference === '') {
            return view('public.payment-return', [
                'redirect' => LadillLink::url($shortCode),
            ]);
        }

        try {
            $payment = $this->payments->complete($reference);
        } catch (RuntimeException $e) {
            return view('public.payment-return', [
                'redirect' => LadillLink::url($shortCode),
            ]);
        }

        return view('public.payment-return', [
            'redirect' => route('qr.public.payment.confirmed', [
                'shortCode' => $shortCode,
                'reference' => $payment->payment_reference,
            ], absolute: true),
        ]);
    }

    public function confirmed(string $shortCode, string $reference): View
    {
        $payment = MiniPayment::query()
            ->with('qrCode')
            ->where('payment_reference', $reference)
            ->where('status', MiniPayment::STATUS_PAID)
            ->whereHas('qrCode', fn ($q) => $q->where('short_code', $shortCode))
            ->firstOrFail();

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