Search.php

<?php

class Search
{
    private $updateStart;
    
    private $updateEnd;
    
    private $entryCompleted;
    
    public function onUpdateStart(callable $callable)
    {
        $this->updateStart = $callable;
        
        return $this;
    }
    
    public function onUpdateEnd(callable $callable)
    {
        $this->updateEnd = $callable;
        
        return $this;
    }
    
    public function onEachEntryCompleted(callable $callable)
    {
        $this->entryCompleted = $callable;
        
        return $this;
    }
    
    public function update()
    {
        $entries = Entry::all();
        
        ($this->updateStart)($entries->count());
      
        foreach ($entries as $id => $entry) {
            $this->index->insert($id, $entry);
          
            ($this->entryCompleted)();
        }
      
        ($this->updateEnd)();
    }
}