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

class User_m extends MY_Model {
	
	protected $_table_name = 'users';
	protected $_order_by = 'name';
	
	public $_rules = array(
			'email' => array(
				'field'=>'email', 
				'label'=>'Email', 
				'rules'=>'trim|required|valid_email'),	
			'password' => array(
				'field'=>'password', 
				'label'=>'Password', 
				'rules'=>'trim|required')
			);
			
	public $rules_admin = array(
			'name' => array(
				'field'=>'name', 
				'label'=>'Name', 
				'rules'=>'trim|required'),
			'email' => array(
				'field'=>'email', 
				'label'=>'Email', 
				'rules'=>'trim|required|valid_email|callback__unique_email'),	
			'password' => array(
				'field'=>'password', 
				'label'=>'Password', 
				'rules'=>'trim|matches[password_confirm]'),
			'password_confirm' => array(
				'field'=>'password_confirm', 
				'label'=>'Confirm Password', 
				'rules'=>'trim|matches[password]')	
			);
	
	function __construct() {
		parent::__construct();	
	}	
	
	//function for login
	public function login() { 
		$user = $this->get_by(array(
					'email' => $this->input->post('email'),
					'password' => $this->hash($this->input->post('password'))
					), TRUE);
		
		if(count($user) > 0) {
			//if user data is exist in database, then log them in..	
			$admin = array(
				'name' => $user->name,
				'email' => $user->email,
				'id' => $user->id,
				'loggedin' => TRUE
			);
			$this->session->set_userdata(array('admin' => $admin)); 
		}
	}
	
	//function for logout
	public function logout() {

			$this->session->unset_userdata('admin'); 
    }
	
	//function to check if logged in, true if loggedin
	public function loggedin() {
		return (bool) $this->session->userdata('admin')['loggedin'];
	}
	
	//function to return new user
	public function get_new() { 
		$user = new stdClass();
		$user->name = '';	
		$user->email = '';
		$user->password = '';
		return $user;
	}
	
	//function for hashing SHA512
	public function hash($string) {
		return hash('sha512', $string . config_item('encryption_key'));
		//password is salted with encryption key, and then use sha512
    }

    //function count if existing record exist
	public function count_exist($id) {
        $this->db->select('*');
        $this->db->from('users');
        $this->db->where('id', $id);
        $query = $this->db->get();		
		return $query->num_rows();
    }


	
}