<?php
	class PuploadBehavior extends ModelBehavior{
		var $Model = null;
		var $options = array(
			'dir' => 'img'
		);
		var $empfields = array();
		var $allowExtension = array('txt','pdf','jpg','jpeg','png','flv','mp3');
		var $errors = array();


		function setup(&$model, $settings = array()){
			$this->Model = $model;
			$this->options['mname'] = $model->alias;
			if(!empty($settings['fields'])) $this->options['fields'] = $settings['fields'];
		}


		function beforeSave(){
			$this->doUpload();
		}

		function doUpload(){
			$als = $this->options['mname'];
			foreach($this->options['fields'] as $field){
				if(empty($this->Model->data[$als][$field]['name'])){
					$this->empfields[] = $field;
					unset($this->Model->data[$als][$field]);
				}
				else {
					$filename = explode('.', $this->Model->data[$als][$field]['name']);
					$ext = end($filename);
					if($this->whiteList($ext)){
					$p = $this->makepath($field);
						if(!empty($p)){
							if(file_exists($p . '/' . implode('.', $filename))) $filename[0] = $filename[0] . '-' . time();
							if(move_uploaded_file($this->Model->data[$als][$field]['tmp_name'], $p . '/' . implode('.', $filename))){
								$this->Model->data[$als][$field] = implode('.', $filename);
							} else $this->errors[$field][] = 'upload field';
						}
					}
				}
			}
		}

		function whiteList($ext = null){
			if(in_array($ext, $this->allowExtension)) return true;
			else return false;
		}

		function makepath($field = null){
			$mpath = WWW_ROOT . $this->options['dir'] . '/' . $this->Model->alias . '/' . $field;
			$steps = explode('/', $mpath);
			unset($steps[0]);
			$dirs = null;
			foreach($steps as $dir){
				$dirs = $dirs .  '/' . $dir;
				if(!is_dir($dirs)) mkdir($dirs, 0777);
			}
			if(!is_dir($mpath)){
				if(mkdir($mpath, 0775)) return $mpath;
				else {
					$this->errors[$field] [] = 'path not found';
					return false;
				}
			} else return $mpath;

		}
	}