<?php

namespace App\Http\Controllers\Customer;

use App\Http\Controllers\Controller;
use App\Models\AppNotification;
use App\Models\AppNotificationRead;
use App\Services\AppNotificationUnreadService;
use Illuminate\Http\Request;
use Symfony\Component\HttpKernel\Exception\NotFoundHttpException;

class AppNotificationController extends Controller
{
    public function __construct(
        private readonly AppNotificationUnreadService $unread,
    ) {
    }

    private function assertFeatureEnabled(): void
    {
        if (! $this->unread->featureEnabled()) {
            throw new NotFoundHttpException('اعلان داخل اپ غیرفعال است.');
        }
    }

    public function index()
    {
        $this->assertFeatureEnabled();
        $customerId = (int) auth()->id();

        $rows = $this->unread->visibleQuery($customerId)
            ->orderByDesc('id')
            ->limit(100)
            ->get(['id', 'title', 'body', 'severity', 'created_at']);

        $readIds = AppNotificationRead::query()
            ->where('customer_id', $customerId)
            ->whereIn('notification_id', $rows->pluck('id'))
            ->pluck('notification_id')
            ->all();
        $readSet = array_fill_keys($readIds, true);

        $payload = $rows->map(function (AppNotification $row) use ($readSet) {
            return [
                'id' => $row->id,
                'title' => $row->title,
                'body' => $row->body,
                'severity' => $row->severity,
                'created_at' => $row->created_at,
                'is_read' => isset($readSet[$row->id]),
            ];
        });

        return response()->json($payload);
    }

    public function unreadCount()
    {
        $this->assertFeatureEnabled();
        $customerId = (int) auth()->id();

        return response()->json($this->unread->payloadForCustomer($customerId));
    }

    public function markRead(Request $request, int $id)
    {
        $this->assertFeatureEnabled();
        $customerId = (int) auth()->id();

        $exists = $this->unread->visibleQuery($customerId)->where('id', $id)->exists();
        if (! $exists) {
            throw new NotFoundHttpException('اعلان یافت نشد.');
        }

        AppNotificationRead::query()->updateOrCreate(
            [
                'notification_id' => $id,
                'customer_id' => $customerId,
            ],
            [
                'read_at' => now(),
            ]
        );

        $this->unread->publishForCustomer($customerId);

        return response()->json(true);
    }

    public function markAllRead()
    {
        $this->assertFeatureEnabled();
        $customerId = (int) auth()->id();

        $ids = $this->unread->visibleQuery($customerId)->pluck('id');
        $now = now();
        foreach ($ids as $notificationId) {
            AppNotificationRead::query()->updateOrCreate(
                [
                    'notification_id' => $notificationId,
                    'customer_id' => $customerId,
                ],
                [
                    'read_at' => $now,
                ]
            );
        }

        $this->unread->publishForCustomer($customerId);

        return response()->json(true);
    }
}