<?php
  /**
   * Copyright (c) 2013 Bart Visscher <bartv@thisnet.nl>
   * This file is licensed under the Affero General Public License version 3 or
   * later.
   * See the COPYING-README file.
   */
  
  namespace OC\Template;
  
  class TemplateFileLocator {
  	protected $form_factor;
  	protected $dirs;
  	private $path;

  	/**
  	 * @param string[] $dirs
  	 * @param string $form_factor
  	 */

  	public function __construct( $form_factor, $dirs ) {
  		$this->form_factor = $form_factor;
  		$this->dirs = $dirs;
  	}

  	/**
  	 * @param string $template
  	 */

  	public function find( $template ) {
  		if ($template === '') {
  			throw new \InvalidArgumentException('Empty template name');
  		}
  
  		foreach($this->dirs as $dir) {
  			$file = $dir.$template.$this->form_factor.'.php';
  			if (is_file($file)) {
  				$this->path = $dir;
  				return $file;
  			}
  			$file = $dir.$template.'.php';
  			if (is_file($file)) {
  				$this->path = $dir;
  				return $file;
  			}
  		}
  		throw new \Exception('template file not found: template:'.$template.' formfactor:'.$this->form_factor);
  	}
  
  	public function getPath() {
  		return $this->path;
  	}
  }