<?php

namespace Typemill\Controllers;

use Typemill\Models\Validation;
use Typemill\Models\WriteYaml;

class FormController extends Controller
{
	/*************************************
	**	SAVE THEME- AND PLUGIN-SETTINGS	**
	*************************************/

	public function savePublicForm($request, $response, $args)
	{
		if($request->isPost())
		{	
			$params 			= $request->getParams();
			reset($params);
			$pluginName 		= key($params);
			$referer			= $request->getHeader('HTTP_REFERER');

			# simple bot check with honeypot
			if(isset($params[$pluginName]['personal-mail']))
			{
				if($params[$pluginName]['personal-mail'] != '')
				{
					$this->c->flash->addMessage('publicform', 'bot');
					return $response->withRedirect($referer[0]);			
				}
				unset($params[$pluginName]['personal-mail']);
			}

			#recaptcha check
			if(isset($params['g-recaptcha-response']))
			{
				$recaptchaApi 		= 'https://www.google.com/recaptcha/api/siteverify';
				$settings			= $this->c->get('settings');
				$secret				= isset($settings['plugins'][$pluginName]['recaptcha_secretkey']) ? $settings['plugins'][$pluginName]['recaptcha_secretkey'] : false;
				$recaptchaRequest 	= ['secret' => $secret, 'response' => $params['g-recaptcha-response']];

				# use key 'http' even if you send the request to https://...
				$options = array(
					'http' => array(
						'header'  => "Content-type: application/x-www-form-urlencoded\r\n",
						'method'  => 'POST',
						'content' => http_build_query($recaptchaRequest),
						'timeout' => 5
					)
				);

				$context  	= stream_context_create($options);
				$result 	= file_get_contents($recaptchaApi, false, $context);
				$result		= json_decode($result);
				
				if ($result === FALSE || $result->success === FALSE)
				{
					$this->c->flash->addMessage('publicform', 'bot');
					return $response->withRedirect($referer[0]);			
				}
			}
			
			if(isset($params[$pluginName]))
			{
				# validate the user-input
				$this->validateInput('plugins', $pluginName, $params[$pluginName]);
			}
			
			# check for errors and redirect to path, if errors found
			if(isset($_SESSION['errors']))
			{
				$this->c->flash->addMessage('error', 'Please correct the errors');
				return $response->withRedirect($referer[0]);
			}
			
			# clean up and make sure that only validated data are stored
			$data = [ $pluginName => $params[$pluginName]];
			
			# create write object
			$writeYaml = new WriteYaml();
			
			# write the form data into yaml file
			$writeYaml->updateYaml('settings', 'formdata.yaml', $data);
			
			# add message and return to original site
			$this->c->flash->addMessage('formdata', $pluginName);
			return $response->withRedirect($referer[0]);
		}
	}

	private function validateInput($objectType, $objectName, $userInput)
	{
		# get settings and start validation
		$originalSettings 	= \Typemill\Settings::getObjectSettings($objectType, $objectName);
		$userSettings 		= \Typemill\Settings::getUserSettings();
		$validate			= new Validation();

		if(isset($originalSettings['public']['fields']))
		{
			/* flaten the multi-dimensional array with fieldsets to a one-dimensional array */
			$originalFields = array();
			foreach($originalSettings['public']['fields'] as $fieldName => $fieldValue)
			{
				if(isset($fieldValue['fields']))
				{
					foreach($fieldValue['fields'] as $subFieldName => $subFieldValue)
					{
						$originalFields[$subFieldName] = $subFieldValue;
					}
				}
				else
				{
					$originalFields[$fieldName] = $fieldValue;
				}
			}

			/* take the user input data and iterate over all fields and values */
			foreach($userInput as $fieldName => $fieldValue)
			{
				/* get the corresponding field definition from original plugin settings */
				$fieldDefinition = isset($originalFields[$fieldName]) ? $originalFields[$fieldName] : false;

				if($fieldDefinition)
				{
					/* validate user input for this field */
					$validate->objectField($fieldName, $fieldValue, $objectName, $fieldDefinition);
				}
				if(!$fieldDefinition && $fieldName != 'active')
				{
					$_SESSION['errors'][$objectName][$fieldName] = array('This field is not defined!');
				}
			}
		}
	}
}