<?php

namespace App\Http\Controllers\Api;

use App\Models\Notification;
use App\Models\UserNotification;
use Carbon\Carbon;
use Symfony\Component\HttpFoundation\Response;

class NotificationController extends BaseApiController
{
    protected Notification $notification;
    protected UserNotification $userNotification;

    public function __construct()
    {
        parent::__construct();
        $this->notification     = model(Notification::class);
        $this->userNotification = model(UserNotification::class);
    }

    public function index()
    {
        $user = $this->getCurrentUser();
        if (!$user) {
            return $this->respondError('Authentication required', Response::HTTP_UNAUTHORIZED);
        }

        $page    = max(1, (int) ($this->request->getGet('page') ?? 1));
        $perPage = min(100, max(1, (int) ($this->request->getGet('per_page') ?? 20)));
        $read    = $this->request->getGet('read');

        $query = $this->userNotification->newQuery()
            ->select([
                'notifications.*',
                'user_notifications.is_read AS is_read',
                'user_notifications.read_at',
            ])
            ->join('notifications', 'notifications.id', '=', 'user_notifications.notification_id')
            ->where('user_notifications.user_id', (int) $user->id);

        if ($read !== null) {
            $isRead = filter_var($read, FILTER_VALIDATE_BOOLEAN);
            $query->where('user_notifications.is_read', $isRead ? 1 : 0);
        }

        $result = $this->paginate($query, $page, $perPage);
        return $this->success($result, 'Notifications retrieved successfully');
    }

    public function show($id = null)
    {
        $user = $this->getCurrentUser();
        if (!$user) {
            return $this->respondError('Authentication required', Response::HTTP_UNAUTHORIZED);
        }

        $notification = $this->userNotification->newQuery()
            ->select([
                'notifications.*',
                'user_notifications.is_read AS is_read',
                'user_notifications.read_at',
            ])
            ->join('notifications', 'notifications.id', '=', 'user_notifications.notification_id')
            ->where('user_notifications.user_id', (int) $user->id)
            ->where('user_notifications.notification_id', $id)
            ->first();

        if (!$notification) {
            return $this->error('Notification not found', Response::HTTP_NOT_FOUND);
        }

        return $this->success($notification, 'Notification retrieved successfully');
    }

    public function markRead($id = null)
    {
        $user = $this->getCurrentUser();
        if (!$user) {
            return $this->respondError('Authentication required', Response::HTTP_UNAUTHORIZED);
        }

        $userNotification = $this->userNotification->newQuery()
            ->where('user_id', (int) $user->id)
            ->where('notification_id', $id)
            ->first();

        if (!$userNotification) {
            return $this->error('Notification not found', Response::HTTP_NOT_FOUND);
        }

        try {
            $this->userNotification->update($userNotification->id, [
                'is_read' => 1,
                'read_at' => Carbon::now('UTC')->format('Y-m-d H:i:s'),
            ]);

            return $this->success(null, 'Notification marked as read');
        } catch (\Throwable $e) {
            log_message('error', 'Notification mark read error: ' . (string) $e->getMessage());
            return $this->respondError('Failed to mark notification as read', Response::HTTP_INTERNAL_SERVER_ERROR);
        }
    }
}