<?php

namespace App\Http\Controllers\Api;

use App\Http\Controllers\Controller;
use App\Models\ClientInvoice;
use Illuminate\Http\JsonResponse;

class NotificationController extends Controller
{
    public function index(): JsonResponse
    {
        $pendingInvoiceCount = ClientInvoice::query()
            ->whereNull('approved_at')
            ->count();

        $notifications = collect([
            [
                'type' => 'pending_invoice',
                'title' => 'Pending invoice approvals',
                'description' => 'Client invoices waiting for approval',
                'count' => $pendingInvoiceCount,
            ],
        ])->filter(fn (array $notification) => $notification['count'] > 0)->values();

        return response()->json([
            'count' => $notifications->sum('count'),
            'notifications' => $notifications,
        ]);
    }
}