<?php
	namespace Juju;
	use \Juju\{App\Controller, App\Exception, App\Router, Http\Response, Http\Request};
	require_once('base.abstract.class.php');
	require_once('App/router.class.php');
	require_once('App/exception.class.php');
	require_once('App/controller.abstract.class.php');

	class App extends Base {
		use Events;
		private static $apps = [];
		private $domains;
		private $routers;
		private $router;
		public $_onerror;
		public $request = null;
		public $response;
		public $name;
		public $textdomain;
		public $textdomain_folder;
		public $textdomain_codeset;
		public function __construct(string $name, callable $fn = null, array $events = null){
			$this->name = $name;
			$this->textdomain = $name;
			$this->textdomain_folder = __DIR__.'/locale/';
			$this->textdomain_codeset = 'UFT-8';
			$this->router = new Router();
			$this->response = new Response();
			$this->routers = [];
			$this->domains = [];
			$this->_onerror = function($req, $res, $error){
				$o = json_encode([
					'message'=>$error->getMessage(),
					'code'=>$error->getCode(),
					'file'=>$error->getFile(),
					'line'=>$error->getLine(),
					'traceback'=>$error->getTrace()
				]);
				$res->code(404);
				$res->header('Content-Type', 'application/json');
				$res->end($o);
				$res->shutdown();
			};
			if(!is_null($events)){
				foreach($events as $name => $handler){
					$this->on($name, $handler);
				}
			}
			static::$apps[] = $this;
			if(is_callable($fn)){
				$fn($this);
			}
		}
		public function __destruct(){
			$this->routers = [];
			$index = array_search($this, static::$apps);
			if($index !== false){
				array_splice(static::$apps, $index, 1);
			}
			if(is_callable('parent::__destruct')){
				parent::__destruct();
			}
		}
		public static function import_all(string $dirpath){
			foreach(scandir($dirpath) as $file){
				$path = "{$dirpath}/{$file}";
				if(is_file($path) && pathinfo($path, PATHINFO_EXTENSION) == "php"){
					require_once($path);
				}
			}
		}
		public static function shutdown(){
			$verb = Request::get_verb();
			$url = Request::get_url();
			$data = Request::get_body();
			if(ob_get_level() > 0){
				ob_clean();
			}
			foreach(static::$apps as $k => $app){
				if($app instanceof App){
					$app->handle($verb, $url, $data)->shutdown();
				}
			}
			while(ob_get_level() > 0){
				ob_end_flush();
			}
			if(is_callable('parent::__destruct')){
				parent::__destruct();
			}
		}
		public static function shutdown_error($error){
			while(ob_get_level() > 0){
				ob_end_clean();
			}
			if(count(static::$apps)){
				foreach(static::$apps as $k => $app){
					if(is_null($app->request)){
						$app->request = new Request(Request::get_verb(), Request::get_url(), Request::get_headers(), Request::get_body());
					}
					$app->response->open(true);
					$app->onerror($app->request, $app->response, $error);
					$app->response->shutdown();
				}
				flush();
			}else{
				$res =new Response();
				$res->code(500)
					->header('Content-Type', 'text/plain')
					->write(print_r($error, true))
					->shutdown();
			}
			flush();
			if(is_callable('parent::__destruct')){
				parent::__destruct();
			}
		}
		public function handle(string $verb, array $url, string $data, array $headers = null) : Response{
			if(is_null($headers)){
				$headers = Request::get_headers();
			}
			$res = $this->response;
			$this->request = $req = new Request($verb, $url, $headers, $data);
			Response::locale($req->locale, $this->textdomain, $this->textdomain_folder, $this->textdomain_codeset);
			if($this->fire('handle', $req, $res)){
				$self = $this;
				$onerror = function($res, $error) use($self){
					$self->onerror($req, $res, $error);
				};
				$handled = false;
				// Domain routers
				foreach($this->domains as $host => $router){
					if($url['host'] == $host){
						while(is_string($router)){
							$router = $this->domains[$router];
						}
						$router->handle($url['path'], $req, $res, null, $onerror);
						$handled = $handled || $router->handled;
					}
				}
				// Prefixed path routers
				foreach($this->routers as $prefix => $router){
					if(strpos($url["path"], $prefix, 0 ) == 0){
						$router->handle($url["path"], $req, $res, null, $onerror);
						$handled = $handled || $router->handled;
					}
				}
				// Base router for non-prefixed paths
				$this->router->handle($url["path"], $req, $res, function($req, $res) use($handled, $self, $url){
					if(!$handled){
						$self->onerror($req, $res, new \Exception("{$url['scheme']}://{$url['host']}{$url["path"]} Not Found", 404));
					}
				}, $onerror);
				$this->fire('afterhandle', $req, $res);
			}
			return $res;
		}
		public function error(callable $fn){
			$this->_onerror = $fn;
			return $this;
		}
		public function base(string $base = null){
			if(is_null($base)){
				return $this->router->base;
			}else{
				foreach($this->domains as &$router){
					if($router instanceof Router){
						$router->base($base);
					}
				}
				foreach($this->routers as $prefix => &$router){
					$router->base("{$base}/{$prefix}");
				}
				$this->router->base($base);
				return $this;
			}
		}
		public function route(string $path, callable $fn){
			$this->router->path($path, $fn);
			return $this;
		}
		public function prefix(string $prefix, callable $fn){
			if(!$this->routers[$prefix]){
				$this->routers[$prefix] = new Router("{$this->router->base}/{$prefix}");
			}
			$fn($this->routers[$prefix]);
			return $this;
		}
		public function domain(string $host, callable $fn){
			if(!isset($this->domains[$host])){
				$this->domains[$host] = new Router($this->router->base);
			}
			$fn($this->domains[$host]);
			return $this;
		}
		public function map_domain(string $host, $handle){
			if(!is_array($handle)){
				$handle = [$handle];
			}
			foreach($handle as $host2){
				$this->domains[$host2] = $host;
			}
			return $this;
		}
		public function bind(string $hosts, callable $fn = null){
			$hosts = array_map(function($item){
				return trim($item);
			}, explode(',', $hosts));
			$host = array_pop($hosts);
			if(is_null($fn)){
				$fn = function(Router $router){
					Controller::handle_all($router);
				};
			}
			return $this->map_domain($host, $hosts)->domain($host, $fn);
		}
		public function onerror(Request $req, Response $res, $error){
			try{
				$this->fire('error', $error);
				$fn = $this->_onerror;
				if(is_callable($fn)){
					$fn($req, $res, $error);
				}
			}catch(\Exception $e){
				die("Error handlers failed {$e}");
			}
		}
		public function locale(string $domain, string $folder, string $codeset = 'UTF-8'){
			$this->textdomain = $domain;
			$this->textdomain_codeset = $codeset;
			$this->textdomain_folder = $folder;
			return $this;
		}
	}
	if(!defined('JUJU_DISABLE_APP')){
		set_exception_handler(function($error){
			App::shutdown_error($error);
		});
		set_error_handler(function($errno, $errstr, $errfile, $errline){
			// ignore warnings
			if($errno &~ E_WARNING){
				App::shutdown_error(new Exception($errstr, $errno, null, $errfile, $errline, debug_backtrace()));
				die();
			}
		}, E_ALL);
		register_shutdown_function(function(){
			error_reporting(E_ALL &~ E_WARNING);
			ini_set('display_errors', 'Off');
			App::shutdown();
		});
		error_reporting(E_ALL &~ E_WARNING);
		ini_set('display_errors', 'Off');
		gc_enable();
	}
?>