ForRo/app/Services/PaginationService.php

<?php

namespace App\Services;

use App\Models\Location;

class PaginationService
{
    protected $location;
    protected $limit = 15;

    public function __construct(
        Location $location,
    ) {
        $this->location = $location;
    }

    public function getPage($pageNum)
    {
        $range     = $pageNum * $this->limit - $this->limit;
        $active    = $this->location::where("active", true)->where('actions_count', '>=', 2)->get();
        $locations = $this->location::where("active", true)->where('actions_count', '>=', 2)
            ->limit($this->limit)->offset($range)->orderBy('id', 'asc')->get();
        $pageCount = ceil(count($active) / $this->limit);

        $next = $pageNum + 1;
        if ($next > $pageCount) {
            $next = 1;
        }

        $prev = $pageNum - 1;

        if ($prev <= 0) {
            $prev = $pageCount;
        }

        return $result = [
            'locations' => $locations,
            'pageCount' => $pageCount,
            'prev'      => $prev,
            'next'      => $next];
    }
}