<?php

require_once(LIBDIR."/autoloader/autoloader.php");
require_once(LIBDIR."/mvcfronk/mfLog/mfLoghandler.php");

/**
 * This class routes incoming requests. 
 * It should be called by the entry script (public/index.php or CLI.php) as the entrypoint into the application.
 * Looks at mod and action parameters and loads the corresponding class.
 * If no parameters are given, uses default route.
 * Also loads Configfile.
 * 
 * @author fronk
 * @param array of request params $request
 */
class mfRouter {
	private $default=array();
	private $mod;
	private $action;
	
	
	public function __construct($request) {
    //var_dump($request);exit;
    // set default route, in case no default route is defined in configfile.
		$this->default['mod']="Application";
		$this->default['action']="Index";
		
    if(!defined('MFUSEFANCYURLS')) {
      define('MFUSEFANCYURLS',false);
    }
    
		if(defined("DEFAULT_ROUTE") && strlen(DEFAULT_ROUTE)) {
			$defroute = explode("_",DEFAULT_ROUTE);
			$this->default['mod'] = $defroute[0];
			if(count($defroute) > 1 && $defroute[1]) {
				$this->default['action'] = $defroute[1];
			}
			
		}
		
    
    
    // set parameters supplied in url
    $umod = "";
    $uaction = "";
    
    // get mod and action
    $m = [];
		if(array_key_exists("action", $request) && preg_match('/^([^_]+)(?:_(.+)?)?$/',$request['action'],$m)) {
      $umod = $m[1];
			$this->mod = $m[1];
			$this->action = "Index";
			if(count($m) > 2 && $m[2]) {
        $uaction = $m[2];
				$this->action = $m[2];
			}
		} else {
			$this->mod = $this->default['mod'];
			$this->action = $this->default['action'];
		}
    
    // if login request, redirect to mfLoginController
    if(array_key_exists("mfLogin_action", $request) && $request['mfLogin_action'] == "mfLogin_Login") {
      $this->mod = "mfLogin";
      $this->action = "Login";
      $classname = "mfLoginController";
    } else {
      // set classname of controller to load
      $classname = $this->mod."Controller";
    }
    
    
    // get baseurl from fancy urls if used
    if(MFUSEFANCYURLS) {
      if(!$umod) {
        $baseurl = $_SERVER['REQUEST_URI'];
      }
      if($umod && !$uaction) {
        if(preg_match("#^(.+)/$umod/?\\??#i",$_SERVER['REQUEST_URI'],$m)) {
          $baseurl = $m[1];
        }
      }
      if($umod && $uaction) {
        if(preg_match("#^(.+)/$umod/$uaction/?\\??#i",$_SERVER['REQUEST_URI'],$m)) {
          $baseurl = $m[1];
        }
      }
      define("MFFANCYBASEURL",$baseurl);
    }
    

    // api call handling
    if(ucfirst($this->mod) == "Api") {
      //var_dump($request);exit;
      $apiversion = API_VERSION;
      $apicall = false;
      $apimod = "";
      $apiaction = "";
      
      if($request["apiv"]) {
        $apiversion = $request["apiv"];
      }
      if(!defined("CURRENT_API_VERSION")) {
        define("CURRENT_API_VERSION", $apiversion);
      }
      
      if($request['apicall']) {
        $apicall = $request['apicall'];
        
        $m = [];
        if(preg_match('/^([^_]+)(?:_(.+)?)?$/',$apicall,$m)) {
          $apimod = $m[1];
          $apiaction = "Call";
          if(array_key_exists(2, $m) && $m[2]) {
            $apiaction = $m[2];
          }
        }
        $this->mod = ucfirst($apimod);
        $this->action = $apiaction;
        
        // set classname to apropriate Api Controller
        $classname = $this->mod."Apicontroller";
      }
    } else {
      // session only for non-api requests
      if(defined("MFSESSION") && MFSESSION === true) {
        session_name(MFAPPNAME."_session");
        session_start();
      }
    }
		
    $request['mod'] = ucfirst($this->mod);
		$request['action'] = ucfirst($this->action);
    $request['http_method'] = $_SERVER['REQUEST_METHOD'];
    
    define('MFROUTER_MOD',$this->mod);
    define('MFROUTER_ACTION',$this->action);
    
		// initiate layout instance
		$Layout = Layout::singleton();
		$Layout->setTemplate($this->mod."/".$this->action);
		$Layout->set("Mod",$this->mod);
		$Layout->set("Action",$this->action);
		
		// load the appropriate Controller
		
		try {
			$page = new $classname($request);
		} catch(Exception $e) {
			require_once(LIBDIR."/mvcfronk/mfExceptionhandler/mfExceptionhandlerController.php");
			$exhc = new mfExceptionhandlerController($e);
		}
		
		$Layout->display();
	}

}