SearchBuilder for Laravel

gistfile1.txt

use Illuminate\Database\Eloquent\Builder;
use Illuminate\Support\Arr;
use ReflectionFunction;

abstract class SearchBuilder
{
    protected $query;
    protected $filters;

    abstract public function uniqueSearch($query, string $search, $category): Builder;

    abstract public function multiSearch($query, array $search, $category): Builder;

    public function build($query, array $filters): self
    {
        $this->query = $query;
        $this->filters = $filters;
        return $this;
    }

    public function newQuery()
    {
        $this->addWith();
        $this->addSearchFilter();
        $this->addFilters();
        return $this->query;
    }

    private function addSearchFilter()
    {
        $search = Arr::get($this->filters, 'search', null);
        $category = Arr::get($this->filters, 'category', '');

        Arr::forget($this->filters, 'search');
        Arr::forget($this->filters, 'category');

        if ($search === null) {
            return;
        }

        if (is_array($search) && count($search) > 0) {
            $this->query = $this->multiSearch($this->query, $search, $category);
            return;
        }

        if (is_string($search) && strlen(trim($search)) > 0) {
            $this->query = $this->uniqueSearch($this->query, $search, $category);
        }
    }

    private function addFilters()
    {
        foreach ($this->filters as $key => $filter) {
            $this->dispatchFilter($key, $filter);
        }
    }

    private function dispatchFilter($key, $filter)
    {
        $functionName = "filter_{$key}";
        if (method_exists($this, $functionName)) {
             $filterResult = $this->{$functionName}($this->query, $filter);
             $this->query = $filterResult ?? $this->query;
        }
    }

    private function addWith()
    {
        $with = Arr::get($this->filters, 'with', []);
        if (is_array($with)) {
            foreach ($with as $w) {
                $this->query = $this->query->with($w);
            }
        } else if (is_string($with)) {
            $this->query = $this->query->with($with);
        }
        Arr::forget($this->filters, 'with');
    }
}