<?php

class Member extends AppModel
{

    public $validate = array(
        'name' => array(
            'length' => array(
                'rule' => array('minLength', 2),
                'message' => 'Name must be at least 2 characters',
            ),
            'unique' => array(
                'rule' => 'isUnique',
                'message' => 'This username has already been taken, please choose another',
            ),
        ),
        'email' => array(
            'validEmail' => array(
                'rule' => array('email', true),
                'message' => 'Please enter your email address',
            ),
            'unique' => array(
                'rule' => 'isUnique',
                'message' => 'This email address has already been taken, please use another',
            ),
        ),
        'password' => array(
            'rule' => array('minLength', 1),
            'message' => 'Please choose a password',
        ),
    );

    public $hasMany = array(
        'Membership',
        'MemberNetworks',
    );

    public $name = 'Member';

    /**
     * Member Status
     */
    const STATUS_ACTIVE = 1;
    const STATUS_BANNED = 2;
    const STATUS_DELETED = 3;
    const STATUS_MODERATED = 4;

    /**
     * Login systems
     */
    const FORUM = 1;

    /**
     * Salt options
     */
    protected $_saltLength = 50;
    protected $_saltChars = 'qwertyuiopasdfghjklzxcvbnm1234567890QWERTYUIOPASDFGHJKLZXCVBNM,.#!%*()-+=';

    /**
     * Hash the password and set the salt
     *
     * @see Model::beforeSave()
     */
    public function beforeSave()
    {

        if (isset($this->data['Member']['password']))
        {
            $salt = $this->_generateSalt();
            $this->data['Member']['salt'] = $salt;
            $this->data['Member']['password'] = sha1($salt . $this->data['Member']['password']);
            $this->data['Member']['status'] = self::STATUS_ACTIVE;
        }

        return true;

    }

    /**
     * Validate a login
     */
    public function validateLogin($data)
    {

        $email = $data['Member']['email'];
        $password = $data['Member']['password'];

        // Fetch user
        $user = $this->findByEmail($email);

        // Email matched?
        if (!$user)
        {
            return false;
        }

        // Password match?
        $salt = $user['Member']['salt'];
        $hashedPassword = sha1($salt . $password);

        if ($hashedPassword == $user['Member']['password'])
        {
            // Remember me?
            $rememberHash = null;
            if ($data['Member']['remember_me'])
            {
                $rememberHash = $this->createRememberMeHash($user);
            }

            return array('id' => $user['Member']['id'], 'hash' => $rememberHash);
        }

        return false;

    }

    /**
     * Login from a Remember Me cookie
     */
    public function loginFromRememberMeHash($id, $hash)
    {

        $user = $this->findByIdAndRememberMe($id, $hash);

        if ($user)
        {
            return $user;
        }

        return false;

    }

    /**
     * Generates, sets and returns a remember me hash
     */
    public function createRememberMeHash($member)
    {

        $rememberHash = $this->_generateSalt();

        $id = 0;

        if (is_array($member))
        {
            $id = $member['Member']['id'];
        }
        else
        {
            $id = $member;
        }

        $this->set('id', $id);
        $this->set('remember_me', $rememberHash);
        $this->save();

        return $rememberHash;

    }

    /**
     * Fetches a member
     *
     * @param   int     UUID
     * @param   int     Login Type
     */
    public function fetchMember($id = 0, $loginType = 1)
    {

        $data = array();

        switch ($loginType)
        {
            default:
            case self::FORUM:
                $data = $this->findById($id);
            break;
        }

        return $data;

    }

    /**
     * Generate a random string
     */
    protected function _generateSalt()
    {

        $str = '';

        for ($i = 0; $i < $this->_saltLength; $i++)
        {
            $str .= $this->_saltChars[rand(0, $this->_saltLength - 1)];
        }

        return $str;

    }

}