<?php

namespace App\Http\Controllers\Public;

use App\Http\Controllers\Controller;
use App\Models\QrCode;
use App\Models\QrEventRegistration;
use App\Services\Events\EventRegistrationService;
use App\Support\LadillLink;
use Illuminate\Http\JsonResponse;
use Illuminate\Http\RedirectResponse;
use Illuminate\Http\Request;
use Illuminate\View\View;
use RuntimeException;

class EventRegistrationController extends Controller
{
    public function __construct(private EventRegistrationService $eventService) {}

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

        abort_unless($qrCode->type === QrCode::TYPE_EVENT, 404);

        $request->validate([
            'tier'            => ['required', 'string', 'max:80'],
            'amount'          => ['nullable', 'numeric', 'min:1', 'max:1000000'],
            'attendee_name'   => ['required', 'string', 'max:120'],
            'attendee_email'  => ['nullable', 'email', 'max:200'],
            'attendee_phone'  => ['required', 'string', 'max:30'],
            'badge_fields'    => ['nullable', 'array'],
            'meet_return'     => ['nullable', 'string', 'max:2048'],
        ]);

        try {
            $result = $this->eventService->register($qrCode, $request->all());
        } catch (RuntimeException $e) {
            return response()->json(['error' => $e->getMessage()], 422);
        }

        return response()->json([
            'paid'         => $result['paid'],
            'checkout_url' => $result['checkout_url'],
                'access_code' => $result['access_code'] ?? null,
                'public_key' => $result['public_key'] ?? null,
                'callback_url' => $result['callback_url'] ?? null,
            'badge_code'   => $result['registration']->badge_code,
            'success_url'  => $this->confirmedUrl($qrCode, $result['registration'], $request->input('meet_return')),
        ]);
    }

    public function callback(Request $request, string $shortCode): RedirectResponse|View
    {
        $reference = (string) $request->query('reference', '');

        if ($reference === '') {
            return view('public.payment-return', [
                'redirect' => LadillLink::url($shortCode),
            ]);
        }

        try {
            $registration = $this->eventService->complete($reference);

            return view('public.payment-return', [
                'redirect' => $this->confirmedUrl($registration->qrCode, $registration),
            ]);
        } catch (\Throwable $e) {
            return view('public.payment-return', [
                'redirect' => LadillLink::url($shortCode),
            ]);
        }
    }

    public function confirmed(Request $request, string $shortCode, string $ref): View
    {
        $registration = QrEventRegistration::query()
            ->where('reference', $ref)
            ->whereHas('qrCode', fn ($q) => $q->where('short_code', $shortCode))
            ->firstOrFail();

        $meetReturn = (string) $request->query('meet_return', '');
        if ($meetReturn === '') {
            $meetReturn = (string) (($registration->metadata ?? [])['meet_return'] ?? '');
        }

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

    private function confirmedUrl(QrCode $qrCode, QrEventRegistration $registration, ?string $meetReturn = null): string
    {
        $url = LadillLink::path($qrCode->short_code, 'registered/'.$registration->reference);
        $meetReturn = trim((string) ($meetReturn ?? ''));
        if ($meetReturn === '') {
            $meetReturn = trim((string) (($registration->metadata ?? [])['meet_return'] ?? ''));
        }

        if ($meetReturn !== '') {
            $url .= '?meet_return='.urlencode($meetReturn);
        }

        return $url;
    }
}