<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\HttpFoundation\Tests\Session\Storage;

use PHPUnit\Framework\TestCase;
use Symfony\Component\HttpFoundation\Session\Attribute\AttributeBag;
use Symfony\Component\HttpFoundation\Session\Flash\FlashBag;
use Symfony\Component\HttpFoundation\Session\Storage\Handler\NativeFileSessionHandler;
use Symfony\Component\HttpFoundation\Session\Storage\Handler\NullSessionHandler;
use Symfony\Component\HttpFoundation\Session\Storage\NativeSessionStorage;
use Symfony\Component\HttpFoundation\Session\Storage\Proxy\SessionHandlerProxy;

/**
 * Test class for NativeSessionStorage.
 *
 * @author Drak <drak@zikula.org>
 *
 * These tests require separate processes.
 *
 * @runTestsInSeparateProcesses
 * @preserveGlobalState disabled
 */
class NativeSessionStorageTest extends TestCase
{
    private $savePath;

    protected function setUp()
    {
        $this->iniSet('session.save_handler', 'files');
        $this->iniSet('session.save_path', $this->savePath = sys_get_temp_dir().'/sf2test');
        if (!is_dir($this->savePath)) {
            mkdir($this->savePath);
        }
    }

    protected function tearDown()
    {
        session_write_close();
        array_map('unlink', glob($this->savePath.'/*'));
        if (is_dir($this->savePath)) {
            rmdir($this->savePath);
        }

        $this->savePath = null;
    }

    /**
     * @return NativeSessionStorage
     */
    protected function getStorage(array $options = array())
    {
        $storage = new NativeSessionStorage($options);
        $storage->registerBag(new AttributeBag());

        return $storage;
    }

    public function testBag()
    {
        $storage = $this->getStorage();
        $bag = new FlashBag();
        $storage->registerBag($bag);
        $this->assertSame($bag, $storage->getBag($bag->getName()));
    }

    /**
     * @expectedException \InvalidArgumentException
     */
    public function testRegisterBagException()
    {
        $storage = $this->getStorage();
        $storage->getBag('non_existing');
    }

    /**
     * @expectedException \LogicException
     */
    public function testRegisterBagForAStartedSessionThrowsException()
    {
        $storage = $this->getStorage();
        $storage->start();
        $storage->registerBag(new AttributeBag());
    }

    public function testGetId()
    {
        $storage = $this->getStorage();
        $this->assertSame('', $storage->getId(), 'Empty ID before starting session');

        $storage->start();
        $id = $storage->getId();
        $this->assertInternalType('string', $id);
        $this->assertNotSame('', $id);

        $storage->save();
        $this->assertSame($id, $storage->getId(), 'ID stays after saving session');
    }

    public function testRegenerate()
    {
        $storage = $this->getStorage();
        $storage->start();
        $id = $storage->getId();
        $storage->getBag('attributes')->set('lucky', 7);
        $storage->regenerate();
        $this->assertNotEquals($id, $storage->getId());
        $this->assertEquals(7, $storage->getBag('attributes')->get('lucky'));
    }

    public function testRegenerateDestroy()
    {
        $storage = $this->getStorage();
        $storage->start();
        $id = $storage->getId();
        $storage->getBag('attributes')->set('legs', 11);
        $storage->regenerate(true);
        $this->assertNotEquals($id, $storage->getId());
        $this->assertEquals(11, $storage->getBag('attributes')->get('legs'));
    }

    public function testSessionGlobalIsUpToDateAfterIdRegeneration()
    {
        $storage = $this->getStorage();
        $storage->start();
        $storage->getBag('attributes')->set('lucky', 7);
        $storage->regenerate();
        $storage->getBag('attributes')->set('lucky', 42);

        $this->assertEquals(42, $_SESSION['_sf2_attributes']['lucky']);
    }

    public function testRegenerationFailureDoesNotFlagStorageAsStarted()
    {
        $storage = $this->getStorage();
        $this->assertFalse($storage->regenerate());
        $this->assertFalse($storage->isStarted());
    }

    public function testDefaultSessionCacheLimiter()
    {
        $this->iniSet('session.cache_limiter', 'nocache');

        $storage = new NativeSessionStorage();
        $this->assertEquals('', ini_get('session.cache_limiter'));
    }

    public function testExplicitSessionCacheLimiter()
    {
        $this->iniSet('session.cache_limiter', 'nocache');

        $storage = new NativeSessionStorage(array('cache_limiter' => 'public'));
        $this->assertEquals('public', ini_get('session.cache_limiter'));
    }

    public function testCookieOptions()
    {
        $options = array(
            'cookie_lifetime' => 123456,
            'cookie_path' => '/my/cookie/path',
            'cookie_domain' => 'symfony.example.com',
            'cookie_secure' => true,
            'cookie_httponly' => false,
        );

        $this->getStorage($options);
        $temp = session_get_cookie_params();
        $gco = array();

        foreach ($temp as $key => $value) {
            $gco['cookie_'.$key] = $value;
        }

        $this->assertEquals($options, $gco);
    }

    public function testSessionOptions()
    {
        if (\defined('HHVM_VERSION')) {
            $this->markTestSkipped('HHVM is not handled in this test case.');
        }

        $options = array(
            'url_rewriter.tags' => 'a=href',
            'cache_expire' => '200',
        );

        $this->getStorage($options);

        $this->assertSame('a=href', ini_get('url_rewriter.tags'));
        $this->assertSame('200', ini_get('session.cache_expire'));
    }

    /**
     * @expectedException \InvalidArgumentException
     */
    public function testSetSaveHandlerException()
    {
        $storage = $this->getStorage();
        $storage->setSaveHandler(new \stdClass());
    }

    public function testSetSaveHandler()
    {
        $this->iniSet('session.save_handler', 'files');
        $storage = $this->getStorage();
        $storage->setSaveHandler();
        $this->assertInstanceOf('Symfony\Component\HttpFoundation\Session\Storage\Proxy\SessionHandlerProxy', $storage->getSaveHandler());
        $storage->setSaveHandler(null);
        $this->assertInstanceOf('Symfony\Component\HttpFoundation\Session\Storage\Proxy\SessionHandlerProxy', $storage->getSaveHandler());
        $storage->setSaveHandler(new SessionHandlerProxy(new NativeFileSessionHandler()));
        $this->assertInstanceOf('Symfony\Component\HttpFoundation\Session\Storage\Proxy\SessionHandlerProxy', $storage->getSaveHandler());
        $storage->setSaveHandler(new NativeFileSessionHandler());
        $this->assertInstanceOf('Symfony\Component\HttpFoundation\Session\Storage\Proxy\SessionHandlerProxy', $storage->getSaveHandler());
        $storage->setSaveHandler(new SessionHandlerProxy(new NullSessionHandler()));
        $this->assertInstanceOf('Symfony\Component\HttpFoundation\Session\Storage\Proxy\SessionHandlerProxy', $storage->getSaveHandler());
        $storage->setSaveHandler(new NullSessionHandler());
        $this->assertInstanceOf('Symfony\Component\HttpFoundation\Session\Storage\Proxy\SessionHandlerProxy', $storage->getSaveHandler());
    }

    /**
     * @expectedException \RuntimeException
     */
    public function testStarted()
    {
        $storage = $this->getStorage();

        $this->assertFalse($storage->getSaveHandler()->isActive());
        $this->assertFalse($storage->isStarted());

        session_start();
        $this->assertTrue(isset($_SESSION));
        $this->assertTrue($storage->getSaveHandler()->isActive());

        // PHP session might have started, but the storage driver has not, so false is correct here
        $this->assertFalse($storage->isStarted());

        $key = $storage->getMetadataBag()->getStorageKey();
        $this->assertArrayNotHasKey($key, $_SESSION);
        $storage->start();
    }

    public function testRestart()
    {
        $storage = $this->getStorage();
        $storage->start();
        $id = $storage->getId();
        $storage->getBag('attributes')->set('lucky', 7);
        $storage->save();
        $storage->start();
        $this->assertSame($id, $storage->getId(), 'Same session ID after restarting');
        $this->assertSame(7, $storage->getBag('attributes')->get('lucky'), 'Data still available');
    }

    public function testCanCreateNativeSessionStorageWhenSessionAlreadyStarted()
    {
        session_start();
        $this->getStorage();

        // Assert no exception has been thrown by `getStorage()`
        $this->addToAssertionCount(1);
    }

    public function testSetSessionOptionsOnceSessionStartedIsIgnored()
    {
        session_start();
        $this->getStorage(array(
            'name' => 'something-else',
        ));

        // Assert no exception has been thrown by `getStorage()`
        $this->addToAssertionCount(1);
    }

    public function testGetBagsOnceSessionStartedIsIgnored()
    {
        session_start();
        $bag = new AttributeBag();
        $bag->setName('flashes');

        $storage = $this->getStorage();
        $storage->registerBag($bag);

        $this->assertEquals($storage->getBag('flashes'), $bag);
    }
}