<?php defined('BLUDIT') or die('Bludit CMS.');

class dbUsers extends dbJSON
{
	public $dbFields = array(
		'firstName'=>		array('inFile'=>false, 'value'=>''),
		'lastName'=>		array('inFile'=>false, 'value'=>''),
		'username'=>		array('inFile'=>false, 'value'=>''),
		'role'=>		array('inFile'=>false, 'value'=>'editor'),
		'password'=>		array('inFile'=>false, 'value'=>''),
		'salt'=>		array('inFile'=>false, 'value'=>'!Pink Floyd!Welcome to the machine!'),
		'email'=>		array('inFile'=>false, 'value'=>''),
		'registered'=>		array('inFile'=>false, 'value'=>'1985-03-15 10:00'),
		'tokenEmail'=>		array('inFile'=>false, 'value'=>''),
		'tokenEmailTTL'=>	array('inFile'=>false, 'value'=>'2009-03-15 14:00'),
		'tokenAuth'=>		array('inFile'=>false, 'value'=>''),
		'tokenAuthTTL'=>	array('inFile'=>false, 'value'=>'2009-03-15 14:00'),
		'twitter'=>		array('inFile'=>false, 'value'=>''),
		'facebook'=>		array('inFile'=>false, 'value'=>''),
		'googlePlus'=>		array('inFile'=>false, 'value'=>''),
		'instagram'=>		array('inFile'=>false, 'value'=>'')
	);

	function __construct()
	{
		parent::__construct(DB_USERS);
	}

	// Disable the user
	public function disableUser($username)
	{
		$args['username'] = $username;
		$args['password'] = '!';

		return $this->set($args);
	}

	// Return TRUE if the user exists, FALSE otherwise
	public function exists($username)
	{
		return isset($this->db[$username]);
	}

	// Create a new user
	public function add($args)
	{
		$dataForDb = array();

		// Verify arguments with the database fields
		foreach($this->dbFields as $field=>$options) {
			if( isset($args[$field]) ) {
				$value = Sanitize::html($args[$field]);
			}
			// Use the default value for the field
			else {
				$value = $options['value'];
			}

			// Set type
			settype($value, gettype($options['value']));

			// Save on database
			$dataForDb[$field] = $value;
		}

		// Current date
		$dataForDb['registered'] = Date::current(DB_DATE_FORMAT);

		// Password
		$dataForDb['salt'] = Text::randomText(SALT_LENGTH);
		$dataForDb['password'] = sha1($dataForDb['password'].$dataForDb['salt']);

		// Auth token
		$dataForDb['tokenAuth'] = $this->generateAuthToken();

		// Save the database
		$this->db[$dataForDb['username']] = $dataForDb;
		return $this->save();
	}

	// Set the parameters of a user
	public function set($args)
	{
		// Current database of the user
		$user = $this->db[$args['username']];

		// Verify arguments with the database fields
		foreach($args as $field=>$value) {
			if( isset($this->dbFields[$field]) ) {
				$value = Sanitize::html($value);
				settype($value, gettype($this->dbFields[$field]['value']));
				$user[$field] = $value;
			}
		}

		// Save the database
		$this->db[$args['username']] = $user;
		return $this->save();
	}

	// Delete an user
	public function delete($username)
	{
		unset($this->db[$username]);
		return $this->save();
	}

	public function getUser($username)
	{
		if($this->userExists($username)) {
			$User = new User();
			$User->setField('username', $username);

			foreach($this->db[$username] as $key=>$value) {
				$User->setField($key, $value);
			}

			return $User;
		}

		return false;
	}

	public function generateAuthToken()
	{
		return md5( uniqid().time().DOMAIN );
	}

	public function setPassword($username, $password)
	{
		$salt = Text::randomText(SALT_LENGTH);
		$hash = sha1($password.$salt);
		$tokenAuth = $this->generateAuthToken();

		$args['username']	= $username;
		$args['salt']		= $salt;
		$args['password']	= $hash;
		$args['tokenAuth']	= $tokenAuth;

		return $this->set($args);
	}

// ---- OLD
	// Returns array with the username databases filtered by username, FALSE otherwise
	public function getDb($username)
	{
		if($this->userExists($username)) {
			$user = $this->db[$username];

			return $user;
		}

		return false;
	}


	public function getAll()
	{
		return $this->db;
	}


	// Return the username associated to an email, if the email does not exists return FALSE.
	public function getByEmail($email)
	{
		foreach($this->db as $username=>$values) {
			if($values['email']==$email) {
				return $username;
			}
		}

		return false;
	}

	// Returns the username with the authentication token assigned, FALSE otherwise
	public function getByAuthToken($token)
	{
		foreach($this->db as $username=>$fields) {
			if($fields['tokenAuth']==$token) {
				return $username;
			}
		}
		return false;
	}

	// Return TRUE if the user exists, FALSE otherwise.
	public function userExists($username)
	{
		return isset($this->db[$username]);
	}

	public function generateTokenEmail($username)
	{
		// Random hash
		$token = sha1(Text::randomText(SALT_LENGTH).time());
		$this->db[$username]['tokenEmail'] = $token;

		// Token time to live, defined by TOKEN_EMAIL_TTL
		$this->db[$username]['tokenEmailTTL'] = Date::currentOffset(DB_DATE_FORMAT, TOKEN_EMAIL_TTL);

		// Save the database
		if( $this->save() === false ) {
			Log::set(__METHOD__.LOG_SEP.'Error occurred when trying to save the database file.');
			return false;
		}

		return $token;
	}

}