<?php namespace Maze\Template;

use Maze;
use Maze\Http\Input;
use Maze\Session\Save;
use Maze\Config\Load as Config;

class View
{
	/**
	 * templatePath
	 *
	 * @var string
	 */
	const TEMPLATE = 'html/';

	/**
	 * servicePath
	 *
	 * @var string
	 */
	const SERVICE =  'template/';
	

	/**
	 * template
	 *
	 * @var string
	 */
	protected $template;

	/**
	 * template
	 *
	 * @var string
	 */
	protected $service;

	/**
	 * method
	 *
	 * @var string
	 */
	protected $method;

	/**
	 * content
	 *
	 * @var string
	 */
	protected $content;

	/**
	 * path
	 *
	 * @var string
	 */
	protected $path;

	/**
	 * parse (default value is dom)
	 *
	 * @var string
	 */
	protected $parse = 'Dom';

	/**
	 * file
	 *
	 * @var string
	 */
	protected $file;

	/**
	 * project
	 *
	 * @var string
	 */
	protected $project;

	/**
	 * compile
	 *
	 * @var \Maze\Template\Compile
	 */
	protected $compile;

	/**
     * instance
     *
     * @var string
     */
    static protected $instance;

    /**
     * load file
     * @param string $file
     * @param string $path
     * 
     * @return \Maze\Template\View
     */
    static public function getInstance($file, $path = '', $project = false)
    {
    	$key = $path . DIRECTORY_SEPARATOR . $file;
        if(empty(self::$instance[$key]))
        {
            self::$instance[$key] = new self($file, $path);

            self::$instance[$key]->project($project);
        }

        return self::$instance[$key];
    }
	
	/**
	 * __construct
	 * @param string $file
	 * @param string $path
	 *
	 * @return mixed
	 */
	public function __construct($file, $path = '')
	{
		$this->file = $file;

		$this->path($path);

		$this->content = '';
	}

	/**
	 * project
	 * @param string $project
	 * 
	 * @return mixed
	 */
	public function project($project)
	{
		$this->project = $project;
	}

	/**
	 * page
	 * @param string $service
	 * 
	 * @return \Maze\Template\View
	 */
	public function page($file, $path = '')
	{
		echo $this->load($file, $path);
	}

	/**
	 * load service
	 * @param string $service
	 * 
	 * @return \Maze\Template\View
	 */
	public function load($file, $path = '', $project = false)
	{
		$view = View::getInstance($file, $path, $project);

		return $view->runing();
	}

	/**
	 * path
	 * @param string $path
	 * 
	 * @return \Maze\Template\View
	 */
	public function path($path = false)
	{
		if(isset(Config::$global['base']['maze_template']) && Config::$global['base']['maze_template'] == true)
		{
			$save = new Save(false, 'cookie');
			$template = Input::get('maze_template');
			if($template)
			{
				if($template == 'no')
				{
					$save->un('maze_template');
				}
				else
				{
					$save->add('maze_template', $template);
				}
			}

			$template = $save->get('maze_template');
		}
		
		if(isset($template) && $template)
		{
			$this->path = $template . DIRECTORY_SEPARATOR;
		}
		elseif($path)
		{
			$this->path = $path;
		}
		elseif(isset(Config::$global['base']['template']))
		{
			if(is_array(Config::$global['base']['template']))
			{
				$this->path = Maze::mobile() ? Config::$global['base']['template'][1] : Config::$global['base']['template'][0];
			}
			else
			{
				$this->path = Config::$global['base']['template'];
			}
			$this->path .= DIRECTORY_SEPARATOR;
		}
		else
		{
			$temp = explode(DIRECTORY_SEPARATOR, MAZE_PROJECT_PATH);
			$this->path  = $temp[count($temp)-2] . DIRECTORY_SEPARATOR;
		}

		return $this;
	}

	/**
	 * parse
	 * @param string $parse
	 * 
	 * @return \Maze\Template\View
	 */
	public function parse($parse)
	{
		$parse = 'Maze\\Template\\Parse\\' . ucwords($parse);

		if(class_exists($parse))
		{
			$this->parse = new $parse($this->compile);
		}

		return $this;
	}

	/**
	 * runing
	 *
	 * @return \Maze\Template\View
	 */
	public function runing()
	{
		if($this->content)
		{
			return $this->content;
		}

		return $this->template()->compile();
	}

	/**
	 * file
	 *
	 * @return string
	 */
	public function file()
	{
		if(empty($this->compile))
		{
			return '';
		}
		return $this->compile->file();
	}

	/**
	 * compile
	 *
	 * @return \Maze\Template\View
	 */
	public function compile()
	{
		$this->compile = new Compile($this->file, $this->template, $this->service, $this->project, $this->path);

		$this->content = $this->compile->get();

		if($this->content !== false)
		{
			return $this->content;
		}

		return $this->service();
	}

	/**
	 * service
	 *
	 * @return \Maze\Template\View
	 */
	public function service()
	{
		$view = $this;

		require $this->service;

		return $this->content;
	}

	/**
	 * template
	 *
	 * @return \Maze\Template\View
	 */
	public function template($state = 1)
	{
		//$path = str_replace(MAZE_PROJECT_PATH, '', Config::$global['base']['assets']);
		//$path = $path == Config::$global['base']['assets'] ? str_replace(MAZE_PATH, '', Config::$global['base']['assets']) : $path;
		if($this->path && strpos(Config::$global['base']['assets'], DIRECTORY_SEPARATOR . $this->path) !== false)
		{
			$this->path = '';
		}

		$html = isset(Config::$global['base']['html']) ? Config::$global['base']['html'] . DIRECTORY_SEPARATOR : self::TEMPLATE; 

		$this->template = Config::$global['base']['assets']  . $this->path . $html;

		if($state == 1 && !is_file($this->template . $this->file . '.html') && isset(Config::$global['base']['template'][0]))
		{
			# 当前文件不存在，则跳转
			$this->path(Config::$global['base']['template'][0] . DIRECTORY_SEPARATOR);
			
			return $this->template(2);
		}

		if($this->path && empty(Config::$global['host']['replace']))
		{
			if(isset(Config::$global['base']['replace']) && is_array(Config::$global['base']['replace']))
			{
				foreach(Config::$global['base']['replace'] as $k => $v)
				{
					if(isset(Config::$global['host'][$k]))
					{
						Config::$global['host'][$k] = str_replace('assets/', 'assets/' . $this->path, Config::$global['host'][$k]);
					}
				}
			}

	        Config::$global['host']['replace'] = true;
		}
		
		//echo Config::$global['host']['css'];die;

		if($this->path && (MAZE_PROJECT_LIB . DIRECTORY_SEPARATOR == $this->path || MAZE_PROJECT_NAME . DIRECTORY_SEPARATOR == $this->path))
		{
			$this->path = '';
		}

		$this->service = (isset(Config::$global['base']['service']) && $this->path) ? Config::$global['base']['service'] . DIRECTORY_SEPARATOR : $this->path;
		$this->service 	= MAZE_PROJECT_PATH . self::SERVICE .  $this->service . $this->file . '.php';
		
		return $this;
	}

	/**
	 * fetch
	 *
	 * @return \Maze\Template\View
	 */
	public function fetch()
	{
		$this->method[] = func_get_args();

		return $this;
	}

	/**
	 * set　设置变量
	 * @param $key 变量名
	 * @param $value 变量的值
	 *
	 * @return \Maze\Template\View
	 */
	public function set($key, $value = false)
	{
		$this->compile->set($key, $value);

		return $this;
	}

	/**
	 * hack
	 * @param $key
	 *
	 * @return \Maze\Template\View
	 */
	public function hack($key, $value)
	{
		$this->compile->set('Maze::$global[\'hack\'][\'' . $key. '\']', $value);

		$value = '<{function(){echo 1;}}>';
		$this->fetch($key, $value);

		return $this;
	}

	/**
	 * display
	 * @param $file 文件名
	 * @param $local 是否本地化 默认不抓取文件到本地
	 *
	 * @return mixed
	 */
	public function display($file = false, $local = false)
	{
		if($file)
		{
			$this->compile->read($file, $this->template, $this->service, $local);
		}
		
		if($this->method)
		{
			if(is_string($this->parse))
			{
				$this->parse($this->parse);
			}

			if(is_object($this->parse))
			{
				# 为了更好的兼容大部分php配置，忍痛取消这里的匿名函数...
				foreach($this->method as $k => $v)
				{
					$this->parse->make($v);
				}
				/*
				$callback = function($param, $key)
				{
					$this->parse->make($param);
				};

				array_walk($this->method, $callback);
				*/

				$this->content = $this->compile->create($this->parse->get());
			}
		}
		else
		{
			$this->content = $this->compile->create($this->compile->template());
		}
	}

	/**
	 * result 获取当前视图模板的基本信息
	 *
	 * @return array
	 */
	public function result()
	{
		$result['service'] = $this->service;
		$result['template'] = $this->template . $this->file . '.html';
		$result['cmp'] = $this->compile->file();

		//$content = file_get_contents($result['template']);

		//$rule = '<script class="include"(.*?)path="(.*?)"(.*?)file="(.*?)"(.*?)><\/script>';

        //preg_match_all(DIRECTORY_SEPARATOR . $rule . '/i', $content, $result);
		
		return $result;
	}
}