<?php defined('BASEPATH') OR exit('No direct script access allowed');

/**
 * Class Auth
 * @property Ion_auth|Ion_auth_model $ion_auth        The ION Auth spark
 * @property CI_Form_validation      $form_validation The form validation library
 */
class Auth extends CI_Controller
{
	public $data = [];

	public function __construct()
	{
		parent::__construct();
		$this->load->database();
		$this->load->library(['ion_auth', 'form_validation']);
		$this->load->helper(['url', 'language']);

		$this->form_validation->set_error_delimiters($this->config->item('error_start_delimiter', 'ion_auth'), $this->config->item('error_end_delimiter', 'ion_auth'));

		$this->lang->load('auth');
	}

	/**
	 * Redirect if needed
	 */
	public function index()
	{
		if ($this->ion_auth->logged_in())
		{
			redirect('home', 'refresh');
		}else{
			$this->data['page_title'] = 'Login - '.company_name();
			$this->load->view('login',$this->data);
		}
	}

	/**
	 * Log the user in
	 */
	public function login()
	{	
		$this->form_validation->set_rules('identity', str_replace(':', '', $this->lang->line('login_identity_label')), 'required');
		$this->form_validation->set_rules('password', str_replace(':', '', $this->lang->line('login_password_label')), 'required');

		if ($this->form_validation->run() === TRUE)
		{
			$remember = (bool)$this->input->post('remember');

			if ($this->ion_auth->login($this->input->post('identity'), $this->input->post('password'), true))
			{
				$this->data['error'] = false;
				$this->data['message'] = $this->ion_auth->messages();
				echo json_encode($this->data);
			}
			else
			{
				$this->data['error'] = true;
				$this->data['message'] = $this->ion_auth->errors();
				echo json_encode($this->data);
			}
		}
		else
		{
			$this->data['error'] = true;
			$this->data['message'] = (validation_errors()) ? validation_errors() : $this->session->flashdata('message');
			echo json_encode($this->data);
		}
	}

	/**
	 * Log the user out
	 */
	public function logout()
	{
		$this->data['title'] = "Logout";
		$this->ion_auth->logout();
		redirect('auth', 'refresh');
	}

	/**
	 * Change password
	 */
	public function change_password()
	{
		$this->form_validation->set_rules('old', $this->lang->line('change_password_validation_old_password_label'), 'required');
		$this->form_validation->set_rules('new', $this->lang->line('change_password_validation_new_password_label'), 'required|min_length[' . $this->config->item('min_password_length', 'ion_auth') . ']|matches[new_confirm]');
		$this->form_validation->set_rules('new_confirm', $this->lang->line('change_password_validation_new_password_confirm_label'), 'required');

		if (!$this->ion_auth->logged_in())
		{
			redirect('auth/login', 'refresh');
		}

		$user = $this->ion_auth->user()->row();

		if ($this->form_validation->run() === FALSE)
		{
			// display the form
			// set the flash data error message if there is one
			$this->data['message'] = (validation_errors()) ? validation_errors() : $this->session->flashdata('message');

			$this->data['min_password_length'] = $this->config->item('min_password_length', 'ion_auth');
			$this->data['old_password'] = [
				'name' => 'old',
				'id' => 'old',
				'type' => 'password',
			];
			$this->data['new_password'] = [
				'name' => 'new',
				'id' => 'new',
				'type' => 'password',
				'pattern' => '^.{' . $this->data['min_password_length'] . '}.*$',
			];
			$this->data['new_password_confirm'] = [
				'name' => 'new_confirm',
				'id' => 'new_confirm',
				'type' => 'password',
				'pattern' => '^.{' . $this->data['min_password_length'] . '}.*$',
			];
			$this->data['user_id'] = [
				'name' => 'user_id',
				'id' => 'user_id',
				'type' => 'hidden',
				'value' => $user->id,
			];

			// render
			$this->_render_page('auth' . DIRECTORY_SEPARATOR . 'change_password', $this->data);
		}
		else
		{
			$identity = $this->session->userdata('identity');

			$change = $this->ion_auth->change_password($identity, $this->input->post('old'), $this->input->post('new'));

			if ($change)
			{
				//if the password was successfully changed
				$this->session->set_flashdata('message', $this->ion_auth->messages());
				$this->logout();
			}
			else
			{
				$this->session->set_flashdata('message', $this->ion_auth->errors());
				redirect('auth/change_password', 'refresh');
			}
		}
	}

	/**
	 * Forgot password
	 */
	public function forgot_password()
	{
		// setting validation rules by checking whether identity is username or email
		if ($this->config->item('identity', 'ion_auth') != 'email')
		{
			$this->form_validation->set_rules('identity', $this->lang->line('forgot_password_identity_label'), 'required');
		}else{
			$this->form_validation->set_rules('identity', $this->lang->line('forgot_password_validation_email_label'), 'required|valid_email');
		}


		if ($this->form_validation->run() === FALSE)
		{
			$this->data['error'] = true;
			$this->data['data'] = '';
			$this->data['message'] = (validation_errors()) ? validation_errors() : $this->session->flashdata('message');
			echo json_encode($this->data);
			return false;

		}else{
			$identity_column = $this->config->item('identity', 'ion_auth');
			$identity = $this->ion_auth->where($identity_column, $this->input->post('identity'))->users()->row();

			if (empty($identity))
			{
				if ($this->config->item('identity', 'ion_auth') != 'email')
				{
					$this->ion_auth->set_error('forgot_password_identity_not_found');
				}
				else
				{
					$this->ion_auth->set_error('forgot_password_email_not_found');
				}

				$this->data['error'] = true;
				$this->data['data'] = '';
				$this->data['message'] = $this->ion_auth->errors();
				echo json_encode($this->data);
				return false;
			}

			// run the forgotten password method to email an activation code to the user
			$forgotten = $this->ion_auth->forgotten_password($identity->{$this->config->item('identity', 'ion_auth')});

			if ($forgotten)
			{	
				$this->data['error'] = false;
				$this->data['data'] = '';
				$this->data['message'] = $this->ion_auth->messages();
				echo json_encode($this->data);
			}else{
				$this->data['error'] = true;
				$this->data['data'] = '';
				$this->data['message'] = $this->ion_auth->errors();
				echo json_encode($this->data);
				return false;
			}
		}
	}

	/**
	 * Reset password - final step for forgotten password
	 *
	 * @param string|null $code The reset code
	 */
	public function reset_password($code = NULL)
	{
		if (!$code)
		{
		    $this->session->set_flashdata('message', $this->ion_auth->errors());
			redirect("auth", 'refresh');
		}

		$user = $this->ion_auth->forgotten_password_check($code);

		if ($user)
		{
			// if the code is valid then display the password reset form

			$this->form_validation->set_rules('new', $this->lang->line('reset_password_validation_new_password_label'), 'required|min_length[' . $this->config->item('min_password_length', 'ion_auth') . ']|matches[new_confirm]');
			$this->form_validation->set_rules('new_confirm', $this->lang->line('reset_password_validation_new_password_confirm_label'), 'required');

			if ($this->form_validation->run() === FALSE)
			{
                $this->data['page_title'] = 'Reset Password - '.company_name();
                $this->data['message'] = (validation_errors()) ? validation_errors() : $this->session->flashdata('message');
                $this->data['user_id'] = [
					'user_id' => $user->id,
				];
				$this->data['csrf'] = $this->_get_csrf_nonce();
				$this->data['code'] = $code;
				
			    $this->load->view('reset',$this->data);
			
			}
			else
			{
				$identity = $user->{$this->config->item('identity', 'ion_auth')};

				// do we have a valid request?
				if ($this->_valid_csrf_nonce() === FALSE || $user->id != $this->input->post('user_id'))
				{

					// something fishy might be up
					$this->ion_auth->clear_forgotten_password_code($identity);

					show_error($this->lang->line('error_csrf'));

				}
				else
				{
					// finally change the password
					$change = $this->ion_auth->reset_password($identity, $this->input->post('new'));

					if ($change)
					{
						// if the password was successfully changed
						$this->session->set_flashdata('message', $this->ion_auth->messages());
						$this->session->set_flashdata('message_type', 'success');
						redirect("auth", 'refresh');
					}
					else
					{
						$this->session->set_flashdata('message', $this->ion_auth->errors());
						redirect('auth/reset_password/' . $code, 'refresh');
					}
				}
			}
		}
		else
		{
			// if the code is invalid then send them back to the forgot password page
			$this->session->set_flashdata('message', $this->ion_auth->errors());
			redirect("auth", 'refresh');
		}
	}

	public function delete_user($id = '')
	{
		$id = !empty($id)?$id:$this->input->post('id');

		if(empty($id) || !is_numeric($id)){
			$this->data['error'] = true;
			$this->data['message'] = $this->lang->line('invalid_user_id')?$this->lang->line('invalid_user_id'):"Invalid User ID";
			echo json_encode($this->data);
			return false;
		}

		if (!$this->ion_auth->logged_in() || !$this->ion_auth->is_admin())
		{
			$this->data['error'] = true;
			$this->data['message'] = $this->lang->line('you_must_be_an_administrator_to_take_this_action')?$this->lang->line('you_must_be_an_administrator_to_take_this_action'):"You must be an administrator to take this action.";
			echo json_encode($this->data);
			return false;
		}

		if($this->ion_auth->delete_user($id)){
			
			$this->projects_model->delete_project_users('', $id);
			$this->projects_model->delete_task_users('', $id);
			$this->projects_model->delete_task_comment('', $id);

			$this->projects_model->delete_timesheet('', '', '', $id);

			$this->notifications_model->delete('', 'new_user', $id);
			
			$project_files = $this->projects_model->get_project_files('', $id);
			foreach($project_files as $project_file){
				$this->projects_model->delete_project_files($project_file['id']);
			}

			$task_files = $this->projects_model->get_tasks_files('', $id);
			foreach($task_files as $task_file){
				$this->projects_model->delete_task_files($task_file['id']);
			}

			$this->session->set_flashdata('message', $this->ion_auth->messages());
			$this->session->set_flashdata('message_type', 'success');
			$this->data['error'] = false;
			$this->data['message'] = $this->ion_auth->messages();
			echo json_encode($this->data);
			return false;
		}else{
			$this->data['error'] = true;
			$this->data['message'] = $this->ion_auth->errors();
			echo json_encode($this->data);
			return false;
		}

	}
 
	/**
	 * Activate the user
	 *
	 * @param int         $id   The user ID
	 * @param string|bool $code The activation code
	 */
	public function activate($id = '')
	{
		$id = !empty($id)?$id:$this->input->post('id');

		if(empty($id) || !is_numeric($id)){
			$this->data['error'] = true;
			$this->data['message'] = $this->lang->line('invalid_user_id')?$this->lang->line('invalid_user_id'):"Invalid User ID";
			echo json_encode($this->data);
			return false;
		}

		if (!$this->ion_auth->logged_in() || !$this->ion_auth->is_admin())
		{
			$this->data['error'] = true;
			$this->data['message'] = $this->lang->line('you_must_be_an_administrator_to_take_this_action')?$this->lang->line('you_must_be_an_administrator_to_take_this_action'):"You must be an administrator to take this action.";
			echo json_encode($this->data);
			return false;
		}

		if($this->ion_auth->activate($id)){
			$this->session->set_flashdata('message', $this->ion_auth->messages());
			$this->session->set_flashdata('message_type', 'success');
			$this->data['error'] = false;
			$this->data['message'] = $this->ion_auth->messages();
			echo json_encode($this->data);
			return false;
		}else{
			$this->data['error'] = true;
			$this->data['message'] = $this->ion_auth->errors();
			echo json_encode($this->data);
			return false;
		}

	}

	/**
	 * Deactivate the user
	 *
	 * @param int|string|null $id The user ID
	 */
	public function deactivate($id = NULL)
	{
		$id = !empty($id)?$id:$this->input->post('id');

		if(empty($id) || !is_numeric($id)){
			$this->data['error'] = true;
			$this->data['message'] = $this->lang->line('invalid_user_id')?$this->lang->line('invalid_user_id'):"Invalid User ID";
			echo json_encode($this->data);
			return false;
		}

		if (!$this->ion_auth->logged_in() || !$this->ion_auth->is_admin())
		{
			$this->data['error'] = true;
			$this->data['message'] = $this->lang->line('you_must_be_an_administrator_to_take_this_action')?$this->lang->line('you_must_be_an_administrator_to_take_this_action'):"You must be an administrator to take this action.";
			echo json_encode($this->data);
			return false;
		}

		if($this->ion_auth->deactivate($id)){
			$this->session->set_flashdata('message', $this->ion_auth->messages());
			$this->session->set_flashdata('message_type', 'success');
			$this->data['error'] = false;
			$this->data['message'] = $this->ion_auth->messages();
			echo json_encode($this->data);
			return false;
		}else{
			$this->data['error'] = true;
			$this->data['message'] = $this->ion_auth->errors();
			echo json_encode($this->data);
			return false;
		}
				
	}

	/**
	 * Create a new user
	 */
	public function create_user()
	{
		$this->data['title'] = $this->lang->line('create_user_heading');

		if (!$this->ion_auth->logged_in() || !$this->ion_auth->is_admin())
		{
			$this->data['error'] = true;
			$this->data['message'] = $this->lang->line('access_denied')?$this->lang->line('access_denied'):"Access Denied";
			echo json_encode($this->data);
			return false; 
		}

		$tables = $this->config->item('tables', 'ion_auth');
		$identity_column = $this->config->item('identity', 'ion_auth');
		$this->data['identity_column'] = $identity_column;

		// validate form input
		$this->form_validation->set_rules('first_name', $this->lang->line('create_user_validation_fname_label'), 'trim|required|strip_tags|xss_clean');
		$this->form_validation->set_rules('last_name', $this->lang->line('create_user_validation_lname_label'), 'trim|required|strip_tags|xss_clean');
		if ($identity_column !== 'email')
		{
			$this->form_validation->set_rules('identity', $this->lang->line('create_user_validation_identity_label'), 'trim|required|is_unique[' . $tables['users'] . '.' . $identity_column . ']');
			$this->form_validation->set_rules('email', $this->lang->line('create_user_validation_email_label'), 'trim|required|valid_email');
		}
		else
		{
			$this->form_validation->set_rules('email', $this->lang->line('create_user_validation_email_label'), 'trim|required|strip_tags|xss_clean|valid_email|is_unique[' . $tables['users'] . '.email]');
		}
		$this->form_validation->set_rules('phone', $this->lang->line('create_user_validation_phone_label'), 'trim|strip_tags|xss_clean');
		$this->form_validation->set_rules('company', $this->lang->line('create_user_validation_company_label'), 'trim');
		$this->form_validation->set_rules('password', $this->lang->line('create_user_validation_password_label'), 'required|min_length[' . $this->config->item('min_password_length', 'ion_auth') . ']|matches[password_confirm]');
		$this->form_validation->set_rules('password_confirm', $this->lang->line('create_user_validation_password_confirm_label'), 'required');

		if ($this->form_validation->run() === TRUE)
		{
			$email = strtolower($this->input->post('email'));
			$identity = ($identity_column === 'email') ? $email : $this->input->post('identity');
			$password = $this->input->post('password');

			$additional_data = [
				'first_name' => $this->input->post('first_name'),
				'last_name' => $this->input->post('last_name'),
				'company' => $this->input->post('company'),
				'phone' => $this->input->post('phone'),
			];
			$group = array($this->input->post('groups'));
		}
		if ($this->form_validation->run() === TRUE && $this->ion_auth->register($identity, $password, $email, $additional_data, $group))
		{
		    
			$this->email->from(smtp_username(), company_name()); 
			$this->email->to($this->input->post('email'));
			$this->email->subject('Welcome to the '.company_name());  
			$body = "<html>
				<body>
					<p>Welcome to the ".company_name().", This is an automatic generate an email to inform you. Below are the credentials for your work dashboard.</p>
					<p>Login credentials</p>
					<p>Email: ".$this->input->post('email')."</p>
					<p>Password: ".$this->input->post('password')."</p>
					<p><a href='".base_url()."'>Login Now</a></p>
				</body>
			</html>";
			$this->email->message($body); 
	  		$this->email->send();
		  		
			$this->session->set_flashdata('message', $this->ion_auth->messages());
			$this->session->set_flashdata('message_type', 'success');
			$this->data['error'] = false;
			$this->data['message'] = $this->ion_auth->messages();
			echo json_encode($this->data); 
		}
		else
		{
			$this->data['error'] = true;
			$this->data['message'] = (validation_errors() ? validation_errors() : ($this->ion_auth->errors() ? $this->ion_auth->errors() : $this->session->flashdata('message')));
			echo json_encode($this->data);
			return false; 
		}
	}
	/**
	* Redirect a user checking if is admin
	*/
	public function redirectUser(){
		if ($this->ion_auth->is_admin()){
			redirect('auth', 'refresh');
		}
		redirect('/', 'refresh');
	}

	/**
	 * Edit a user
	 *
	 * @param int|string $id
	 */
	public function edit_user()
	{
		$id = $this->input->post('update_id');

		if(empty($id) || !is_numeric($id)){

			$this->data['error'] = true;
			$this->data['message'] = $this->lang->line('invalid_user_id')?$this->lang->line('invalid_user_id'):"Invalid User ID";
			echo json_encode($this->data);
			return false;
		}

		if (!$this->ion_auth->logged_in() || (!$this->ion_auth->is_admin() && !($this->ion_auth->user()->row()->id == $id)))
		{
			
			$this->data['error'] = true;
			$this->data['message'] = $this->lang->line('access_denied')?$this->lang->line('access_denied'):"Access Denied";
			echo json_encode($this->data);
			return false;
		}

		$user = $this->ion_auth->user($id)->row();
		$groups = $this->ion_auth->groups()->result_array();
		$currentGroups = $this->ion_auth->get_users_groups($id)->result();
		
		// validate form input
		$this->form_validation->set_rules('update_id', 'User ID', 'trim|required|strip_tags|xss_clean|is_numeric');
		$this->form_validation->set_rules('first_name', $this->lang->line('edit_user_validation_fname_label'), 'trim|required|strip_tags|xss_clean');
		$this->form_validation->set_rules('last_name', $this->lang->line('edit_user_validation_lname_label'), 'trim|required|strip_tags|xss_clean');
		$this->form_validation->set_rules('phone', $this->lang->line('edit_user_validation_phone_label'), 'trim|strip_tags|xss_clean');
		$this->form_validation->set_rules('company', $this->lang->line('edit_user_validation_company_label'), 'trim|strip_tags|xss_clean');

		if (isset($_POST) && !empty($_POST))
		{
			// update the password if it was posted
			if ($this->input->post('password'))
			{
				$this->form_validation->set_rules('password', $this->lang->line('edit_user_validation_password_label'), 'required|min_length[' . $this->config->item('min_password_length', 'ion_auth') . ']|matches[password_confirm]');
				$this->form_validation->set_rules('password_confirm', $this->lang->line('edit_user_validation_password_confirm_label'), 'required');
			}

			if ($this->form_validation->run() === TRUE)
			{
				$profile_pic = '';
				if (!empty($_FILES['profile']['name'])){

					$upload_path = 'assets/uploads/profiles/';
					if($this->input->post('old_profile_pic')){
						$unlink_path = $upload_path.''.$this->input->post('old_profile_pic');
						unlink($unlink_path);
					}
					if(!is_dir($upload_path)){
						mkdir($upload_path,0775,true);
					}

					$config['upload_path']          = $upload_path;
					$config['allowed_types']        = 'jpg|png|';
					$config['overwrite']             = false;
					$config['max_size']             = 10000;
					$config['max_width']            = 0;
					$config['max_height']           = 0;
					$this->load->library('upload', $config);
					if ($this->upload->do_upload('profile')){
						$profile_pic = $this->upload->data('file_name');
					}
				}

				$data = [
					'first_name' => $this->input->post('first_name'),
					'last_name' => $this->input->post('last_name'),
					'company' => $this->input->post('company'),
					'phone' => $this->input->post('phone'),
				];

				if(!empty($profile_pic)){
					$data["profile"] = $profile_pic;
				}

				// update the password if it was posted
				if ($this->input->post('password'))
				{
					$data['password'] = $this->input->post('password');
				}

				// Only allow updating groups if user is admin
				if ($this->ion_auth->is_admin())
				{
					$groupData = array($this->input->post('groups'));
					if (isset($groupData) && !empty($groupData) && $currentGroups[0]->id != $this->input->post('groups'))
					{
						$this->ion_auth->remove_from_group('', $id);
						foreach ($groupData as $grp)
						{
							$this->ion_auth->add_to_group($grp, $id);
						}

					}
				}

				// check to see if we are updating the user
				if ($this->ion_auth->update($user->id, $data))
				{
	  		
					$this->session->set_flashdata('message', $this->ion_auth->messages());
					$this->session->set_flashdata('message_type', 'success');
					$this->data['error'] = false;
					$this->data['message'] = $this->ion_auth->messages();
					echo json_encode($this->data);
					return false;

				}
				else
				{
					
					$this->data['error'] = true;
					$this->data['message'] = $this->ion_auth->errors();
					echo json_encode($this->data);
					return false;

				}

			}
		}

			$this->data['error'] = true;
			$this->data['message'] = (validation_errors() ? validation_errors() : ($this->ion_auth->errors() ? $this->ion_auth->errors() : $this->session->flashdata('message')));
			echo json_encode($this->data);
			return false;

	}

	/**
	 * Create a new group
	 */
	public function create_group()
	{
		$this->data['title'] = $this->lang->line('create_group_title');

		if (!$this->ion_auth->logged_in() || !$this->ion_auth->is_admin())
		{
			redirect('auth', 'refresh');
		}

		// validate form input
		$this->form_validation->set_rules('group_name', $this->lang->line('create_group_validation_name_label'), 'trim|required|alpha_dash');

		if ($this->form_validation->run() === TRUE)
		{
			$new_group_id = $this->ion_auth->create_group($this->input->post('group_name'), $this->input->post('description'));
			if ($new_group_id)
			{
				// check to see if we are creating the group
				// redirect them back to the admin page
				$this->session->set_flashdata('message', $this->ion_auth->messages());
				redirect("auth", 'refresh');
			}
		}
		else
		{
			// display the create group form
			// set the flash data error message if there is one
			$this->data['message'] = (validation_errors() ? validation_errors() : ($this->ion_auth->errors() ? $this->ion_auth->errors() : $this->session->flashdata('message')));

			$this->data['group_name'] = [
				'name'  => 'group_name',
				'id'    => 'group_name',
				'type'  => 'text',
				'value' => $this->form_validation->set_value('group_name'),
			];
			$this->data['description'] = [
				'name'  => 'description',
				'id'    => 'description',
				'type'  => 'text',
				'value' => $this->form_validation->set_value('description'),
			];

			$this->_render_page('auth/create_group', $this->data);
		}
	}

	/**
	 * Edit a group
	 *
	 * @param int|string $id
	 */
	public function edit_group($id)
	{
		// bail if no group id given
		if (!$id || empty($id))
		{
			redirect('auth', 'refresh');
		}

		$this->data['title'] = $this->lang->line('edit_group_title');

		if (!$this->ion_auth->logged_in() || !$this->ion_auth->is_admin())
		{
			redirect('auth', 'refresh');
		}

		$group = $this->ion_auth->group($id)->row();

		// validate form input
		$this->form_validation->set_rules('group_name', $this->lang->line('edit_group_validation_name_label'), 'trim|required|alpha_dash');

		if (isset($_POST) && !empty($_POST))
		{
			if ($this->form_validation->run() === TRUE)
			{
				$group_update = $this->ion_auth->update_group($id, $_POST['group_name'], array(
					'description' => $_POST['group_description']
				));

				if ($group_update)
				{
					$this->session->set_flashdata('message', $this->lang->line('edit_group_saved'));
				}
				else
				{
					$this->session->set_flashdata('message', $this->ion_auth->errors());
				}
				redirect("auth", 'refresh');
			}
		}

		// set the flash data error message if there is one
		$this->data['message'] = (validation_errors() ? validation_errors() : ($this->ion_auth->errors() ? $this->ion_auth->errors() : $this->session->flashdata('message')));

		// pass the user to the view
		$this->data['group'] = $group;

		$this->data['group_name'] = [
			'name'    => 'group_name',
			'id'      => 'group_name',
			'type'    => 'text',
			'value'   => $this->form_validation->set_value('group_name', $group->name),
		];
		if ($this->config->item('admin_group', 'ion_auth') === $group->name) {
			$this->data['group_name']['readonly'] = 'readonly';
		}
		
		$this->data['group_description'] = [
			'name'  => 'group_description',
			'id'    => 'group_description',
			'type'  => 'text',
			'value' => $this->form_validation->set_value('group_description', $group->description),
		];

		$this->_render_page('auth' . DIRECTORY_SEPARATOR . 'edit_group', $this->data);
	}

	/**
	 * @return array A CSRF key-value pair
	 */
	public function _get_csrf_nonce()
	{
		$this->load->helper('string');
		$key = random_string('alnum', 8);
		$value = random_string('alnum', 20);
		$this->session->set_flashdata('csrfkey', $key);
		$this->session->set_flashdata('csrfvalue', $value);

		return [$key => $value];
	}

	/**
	 * @return bool Whether the posted CSRF token matches
	 */
	public function _valid_csrf_nonce(){
		$csrfkey = $this->input->post($this->session->flashdata('csrfkey'));
		if ($csrfkey && $csrfkey === $this->session->flashdata('csrfvalue'))
		{
			return TRUE;
		}
			return FALSE;
	}

	/**
	 * @param string     $view
	 * @param array|null $data
	 * @param bool       $returnhtml
	 *
	 * @return mixed
	 */
	public function _render_page($view, $data = NULL, $returnhtml = FALSE)//I think this makes more sense
	{

		$viewdata = (empty($data)) ? $this->data : $data;

		$view_html = $this->load->view($view, $viewdata, $returnhtml);

		// This will return html on 3rd argument being true
		if ($returnhtml)
		{
			return $view_html;
		}
	}

}
