<?php
	namespace Juju\Data;
	require_once(realpath(dirname(__DIR__).'/events.trait.php'));
	use Juju\Events;

	class EArray implements \ArrayAccess, \Countable, \Iterator, \Serializable, \JsonSerializable {
		use Events;
		protected $data = [];
		private $index = 0;
		public static function from(array $data){
			return new static($data);
		}
		protected function __construct(array $data){
			$this->data = $data;
		}
		public function offsetExists($offset){
			$this->fire('exists', $offset);
			return isset($this->data[$offset]);
		}
		public function offsetGet($offset){
			$this->fire('get', $offset);
			return $this->data[$offset];
		}
		public function offsetSet($offset, $value){
			$this->fire('set', $offset, $value);
			$this->data[$offset] = $value;
		}
		public function offsetUnset($offset){
			if($this->offsetExists($offset)){
				$this->fire('unset', $offset, $this[$offset]);
				unset($this->data[$offset]);
			}
		}
		public function count(){
			return count($this->data);
		}
		public function serialize(){
			return serialize($this->data);
		}
		public function unserialize($data){
			$this->data = unserialize($data);
		}
		public function JsonSerialize(){
			return $this->data;
		}
		public function each(callable $fn){
			foreach($this->data as $offset => $model){
				$fn($model, $offset);
			}
			return $this;
		}
		public function to_array(){
			return $this->data;
		}
		public function rewind(){
			$this->index = 0;
		}
		public function current(){
			return $this[$this->keys()[$this->index]];
		}
		public function key(){
			return $this->keys()[$this->index];
		}
		public function next(){
			$keys = $this->keys();
			return isset($keys[++$this->index]) ? $this->list[$keys[$this->index]] : false;
		}
		public function valid(){
			return isset($this->keys()[$this->index]);
		}
		public function keys(){
			return array_keys($this->data);
		}
	}
?>