<?php

use Oauth2\Authentication\Database;

class OAuthdb implements Database
{
	private $sessions = array();
	private $sessions_client_type_id = array();
	private $sessions_code = array();
	private $session_scopes = array();

	private $clients = array(0 => array(
		'client_id'	=>	'test',
		'client_secret'	=>	'test',
		'redirect_uri'	=>	'http://example.com/test',
		'name'	=>	'Test Client'
	));

	private $scopes = array('test' => array(
		'id'	=>	1,
		'scope'	=>	'test',
		'name'	=>	'test',
		'description'	=>	'test'
	));

	public function validateClient(
        $clientId,
        $clientSecret = null,
        $redirectUri = null
    )
    {
    	if ($clientId !== $this->clients[0]['client_id'])
    	{
    		return false;
    	}

    	if ($clientSecret !== null && $clientSecret !== $this->clients[0]['client_secret'])
    	{
    		return false;
    	}

    	if ($redirectUri !== null && $redirectUri !== $this->clients[0]['redirect_uri'])
    	{
    		return false;
    	}

    	return $this->clients[0];
    }

    public function newSession(
        $clientId,
        $redirectUri,
        $type = 'user',
        $typeId = null,
        $authCode = null,
        $accessToken = null,
        $accessTokenExpire = null,
        $stage = 'requested'
    )
    {
    	$id = count($this->sessions);

    	$this->sessions[$id] = array(
    		'id'	=>	$id,
    		'client_id'	=>	$clientId,
    		'redirect_uri'	=>	$redirectUri,
    		'owner_type'	=>	$type,
    		'owner_id'	=>	$typeId,
    		'auth_code'	=>	$authCode,
    		'access_token'	=>	$accessToken,
    		'access_token_expire'	=>	$accessTokenExpire,
    		'stage'	=>	$stage
    	);

    	$this->sessions_client_type_id[$clientId . ':' . $type . ':' . $typeId] = $id;
    	$this->sessions_code[$clientId . ':' . $redirectUri . ':' . $authCode] = $id;

    	return true;
    }

    public function updateSession(
        $sessionId,
        $authCode = null,
        $accessToken = null,
        $accessTokenExpire = null,
        $stage = 'requested'
    )
    {
    	$this->sessions[$sessionId]['auth_code'] = $authCode;
    	$this->sessions[$sessionId]['access_token'] = $accessToken;
    	$this->sessions[$sessionId]['access_token_expire'] = $accessTokenExpire;
    	$this->sessions[$sessionId]['stage'] = $stage;

    	return true;
    }

    public function deleteSession(
        $clientId,
        $type,
        $typeId
    )
    {
    	$key = $clientId . ':' . $type . ':' . $typeId;
    	if (isset($this->sessions_client_type_id[$key]))
    	{
    		unset($this->sessions[$this->sessions_client_type_id[$key]]);
    	}
    	return true;
    }

    public function validateAuthCode(
        $clientId,
        $redirectUri,
        $authCode
    )
    {
    	$key = $clientId . ':' . $redirectUri . ':' . $authCode;

    	if (isset($this->sessions_code[$key]))
    	{
    		return $this->sessions[$this->sessions_code[$key]];
    	}

    	return false;
    }

    public function hasSession(
        $type,
        $typeId,
        $clientId
    )
    {
    	die('not implemented hasSession');
    }

    public function getAccessToken($sessionId)
    {
    	die('not implemented getAccessToken');
    }

    public function removeAuthCode($sessionId)
    {
    	die('not implemented removeAuthCode');
    }

    public function setAccessToken(
        $sessionId,
        $accessToken
    )
    {
    	die('not implemented setAccessToken');
    }

    public function addSessionScope(
        $sessionId,
        $scope
    )
    {
    	if ( ! isset($this->session_scopes[$sessionId]))
    	{
    		$this->session_scopes[$sessionId] = array();
    	}

    	$this->session_scopes[$sessionId][] = $scope;

    	return true;
    }

    public function getScope($scope)
    {
    	if ( ! isset($this->scopes[$scope]))
    	{
    		return false;
    	}

    	return $this->scopes[$scope];
    }

    public function updateSessionScopeAccessToken(
        $sessionId,
        $accessToken
    )
    {
    	return true;
    }

    public function accessTokenScopes($accessToken)
    {
    	die('not implemented accessTokenScopes');
    }
}