<?php namespace Laravel;

/**
 * Bootstrap the core framework components like the IoC container,
 * configuration class, and the class auto-loader. Once this file
 * has run, the framework is essentially ready for use.
 */
require 'bootstrap/core.php';

/**
 * Register the default timezone for the application. This will be
 * the default timezone used by all date / timezone functions in
 * the entire application.
 */
date_default_timezone_set(Config::$items['application']['timezone']);

/**
 * Create the exception handler function. All of the error handlers
 * registered by the framework call this closure to avoid duplicate
 * code. This Closure will determine if the logging Closure should
 * be called, and will pass the exception to the developer defined
 * handler in the configuration file.
 */
$handler = function($exception)
{
	$config = Config::get('error');

	if ($config['log'])
	{
		call_user_func($config['logger'], $exception, $config);
	}

	call_user_func($config['handler'], $exception, $config);

	if ( ! $config['detail'])
	{
		exit(1);
	}
};

/**
 * Register the PHP exception handler. The framework throws exceptions
 * on every error that cannot be handled. All of those exceptions will
 * be sent through this closure for processing.
 */
set_exception_handler(function($exception) use ($handler)
{
	$handler($exception); 
});

/**
 * Register the PHP error handler. All PHP errors will fall into this
 * handler, which will convert the error into an ErrorException object
 * and pass the exception into the common exception handler.
 */
set_error_handler(function($number, $error, $file, $line) use ($handler)
{
	$handler(new \ErrorException($error, $number, 0, $file, $line));
});

/**
 * Register the PHP shutdown handler. This function will be called
 * at the end of the PHP script or on a fatal PHP error. If an error
 * has occured, we will convert it to an ErrorException and pass it
 * to the common exception handler for the framework.
 */
register_shutdown_function(function() use ($handler)
{
	if ( ! is_null($error = error_get_last()))
	{
		extract($error, EXTR_SKIP);

		$handler(new \ErrorException($message, $type, 0, $file, $line));
	}	
});

/**
 * Setting the PHP error reporting level to -1 essentially forces
 * PHP to report every error, and is guranteed to show every error
 * on future versions of PHP.
 */
error_reporting(-1);

/**
 * If error detail is turned off, we will turn off all PHP error
 * reporting and display since the framework will be displaying a
 * generic message and we don't want any sensitive details about
 * the exception leaking into the views.
 */
if ( ! Config::$items['error']['detail'])
{
	ini_set('display_errors', 'Off');	
}

/**
 * Load the session and session manager instance. The session
 * payload will be registered in the IoC container as an instance
 * so it can be retrieved easily throughout the application.
 */
if (Config::$items['session']['driver'] !== '')
{
	require SYS_PATH.'ioc'.EXT;
	require SYS_PATH.'session/payload'.EXT;
	require SYS_PATH.'session/drivers/driver'.EXT;
	require SYS_PATH.'session/drivers/factory'.EXT;

	$id = Cookie::get(Config::$items['session']['cookie']);

	$driver = Session\Drivers\Factory::make(Config::$items['session']['driver']);

	IoC::instance('laravel.session', new Session\Payload($driver, $id));
}

/**
 * Manually load some core classes that are used on every request so
 * we can avoid using the loader for these classes. This saves us
 * some overhead on each request.
 */
require SYS_PATH.'input'.EXT;
require SYS_PATH.'request'.EXT;
require SYS_PATH.'response'.EXT;
require SYS_PATH.'routing/route'.EXT;
require SYS_PATH.'routing/router'.EXT;
require SYS_PATH.'routing/loader'.EXT;
require SYS_PATH.'routing/filter'.EXT;

/**
 * Gather the input to the application based on the current request.
 * The input will be gathered based on the current request method and
 * will be set on the Input manager.
 */
$input = array();

switch (Request::method())
{
	case 'GET':
		$input = $_GET;
		break;

	case 'POST':
		$input = $_POST;
		break;

	case 'PUT':
	case 'DELETE':
		if (Request::spoofed())
		{
			$input = $_POST;
		}
		else
		{
			parse_str(file_get_contents('php://input'), $input);
		}
}

/**
 * The spoofed request method is removed from the input so it is not
 * unexpectedly included in Input::all() or Input::get(). Leaving it
 * in the input array could cause unexpected results if the developer
 * fills an Eloquent model with the input.
 */
unset($input[Request::spoofer]);

Input::$input = $input;

/**
 * Route the request to the proper route in the application. If a
 * route is found, the route will be called with the current request
 * instance. If no route is found, the 404 response will be returned
 * to the browser.
 */
Routing\Filter::register(require APP_PATH.'filters'.EXT);

list($uri, $method) = array(Request::uri(), Request::method());

$loader = new Routing\Loader(APP_PATH, ROUTE_PATH);

$router = new Routing\Router($loader, CONTROLLER_PATH);

Request::$route = $router->route($method, $uri);

if ( ! is_null(Request::$route))
{
	$response = Request::$route->call();
}
else
{
	$response = Response::error('404');
}

/**
 * Stringify the response. We need to force the response to be
 * stringed before closing the session, since the developer may
 * be using the session within their views, so we cannot age
 * the session data until the view is rendered.
 */
$response->content = $response->render();

/**
 * Close the session and write the active payload to persistent
 * storage. The session cookie will also be written and if the
 * driver is a sweeper, session garbage collection might be
 * performed depending on the "sweepage" probability.
 */
if (Config::$items['session']['driver'] !== '')
{
	IoC::core('session')->save($driver);
}

$response->send();