<?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\Cache\Tests\Adapter;

use Psr\Cache\CacheItemPoolInterface;
use Symfony\Component\Cache\Adapter\AdapterInterface;
use Symfony\Component\Cache\Adapter\ArrayAdapter;
use Symfony\Component\Cache\Adapter\ChainAdapter;
use Symfony\Component\Cache\Adapter\FilesystemAdapter;
use Symfony\Component\Cache\CacheItem;
use Symfony\Component\Cache\Exception\InvalidArgumentException;
use Symfony\Component\Cache\Tests\Fixtures\ExternalAdapter;
use Symfony\Component\Cache\Tests\Fixtures\PrunableAdapter;
use Symfony\Component\Filesystem\Filesystem;
use Symfony\Contracts\Cache\ItemInterface;

/**
 * @author Kévin Dunglas <dunglas@gmail.com>
 *
 * @group time-sensitive
 */
class ChainAdapterTest extends AdapterTestCase
{
    public function createCachePool(int $defaultLifetime = 0, string $testMethod = null): CacheItemPoolInterface
    {
        if ('testGetMetadata' === $testMethod) {
            return new ChainAdapter([new FilesystemAdapter('a', $defaultLifetime), new FilesystemAdapter('b', $defaultLifetime)], $defaultLifetime);
        }

        return new ChainAdapter([new ArrayAdapter($defaultLifetime), new ExternalAdapter($defaultLifetime), new FilesystemAdapter('', $defaultLifetime)], $defaultLifetime);
    }

    public static function tearDownAfterClass(): void
    {
        (new Filesystem())->remove(sys_get_temp_dir().'/symfony-cache');
    }

    public function testEmptyAdaptersException()
    {
        $this->expectException(InvalidArgumentException::class);
        $this->expectExceptionMessage('At least one adapter must be specified.');
        new ChainAdapter([]);
    }

    public function testInvalidAdapterException()
    {
        $this->expectException(InvalidArgumentException::class);
        $this->expectExceptionMessage('The class "stdClass" does not implement');
        new ChainAdapter([new \stdClass()]);
    }

    public function testPrune()
    {
        if (isset($this->skippedTests[__FUNCTION__])) {
            $this->markTestSkipped($this->skippedTests[__FUNCTION__]);
        }

        $cache = new ChainAdapter([
            $this->getPruneableMock(),
            $this->getNonPruneableMock(),
            $this->getPruneableMock(),
        ]);
        $this->assertTrue($cache->prune());

        $cache = new ChainAdapter([
            $this->getPruneableMock(),
            $this->getFailingPruneableMock(),
            $this->getPruneableMock(),
        ]);
        $this->assertFalse($cache->prune());
    }

    public function testMultipleCachesExpirationWhenCommonTtlIsNotSet()
    {
        if (isset($this->skippedTests[__FUNCTION__])) {
            $this->markTestSkipped($this->skippedTests[__FUNCTION__]);
        }

        $adapter1 = new ArrayAdapter(4);
        $adapter2 = new ArrayAdapter(2);

        $cache = new ChainAdapter([$adapter1, $adapter2]);

        $cache->save($cache->getItem('key')->set('value'));

        $item = $adapter1->getItem('key');
        $this->assertTrue($item->isHit());
        $this->assertEquals('value', $item->get());

        $item = $adapter2->getItem('key');
        $this->assertTrue($item->isHit());
        $this->assertEquals('value', $item->get());

        sleep(2);

        $item = $adapter1->getItem('key');
        $this->assertTrue($item->isHit());
        $this->assertEquals('value', $item->get());

        $item = $adapter2->getItem('key');
        $this->assertFalse($item->isHit());

        sleep(2);

        $item = $adapter1->getItem('key');
        $this->assertFalse($item->isHit());

        $adapter2->save($adapter2->getItem('key1')->set('value1'));

        $item = $cache->getItem('key1');
        $this->assertTrue($item->isHit());
        $this->assertEquals('value1', $item->get());

        sleep(2);

        $item = $adapter1->getItem('key1');
        $this->assertTrue($item->isHit());
        $this->assertEquals('value1', $item->get());

        $item = $adapter2->getItem('key1');
        $this->assertFalse($item->isHit());

        sleep(2);

        $item = $adapter1->getItem('key1');
        $this->assertFalse($item->isHit());
    }

    public function testMultipleCachesExpirationWhenCommonTtlIsSet()
    {
        if (isset($this->skippedTests[__FUNCTION__])) {
            $this->markTestSkipped($this->skippedTests[__FUNCTION__]);
        }

        $adapter1 = new ArrayAdapter(4);
        $adapter2 = new ArrayAdapter(2);

        $cache = new ChainAdapter([$adapter1, $adapter2], 6);

        $cache->save($cache->getItem('key')->set('value'));

        $item = $adapter1->getItem('key');
        $this->assertTrue($item->isHit());
        $this->assertEquals('value', $item->get());

        $item = $adapter2->getItem('key');
        $this->assertTrue($item->isHit());
        $this->assertEquals('value', $item->get());

        sleep(2);

        $item = $adapter1->getItem('key');
        $this->assertTrue($item->isHit());
        $this->assertEquals('value', $item->get());

        $item = $adapter2->getItem('key');
        $this->assertFalse($item->isHit());

        sleep(2);

        $item = $adapter1->getItem('key');
        $this->assertFalse($item->isHit());

        $adapter2->save($adapter2->getItem('key1')->set('value1'));

        $item = $cache->getItem('key1');
        $this->assertTrue($item->isHit());
        $this->assertEquals('value1', $item->get());

        sleep(2);

        $item = $adapter1->getItem('key1');
        $this->assertTrue($item->isHit());
        $this->assertEquals('value1', $item->get());

        $item = $adapter2->getItem('key1');
        $this->assertFalse($item->isHit());

        sleep(2);

        $item = $adapter1->getItem('key1');
        $this->assertTrue($item->isHit());
        $this->assertEquals('value1', $item->get());

        sleep(2);

        $item = $adapter1->getItem('key1');
        $this->assertFalse($item->isHit());
    }

    public function testExpirationOnAllAdapters()
    {
        if (isset($this->skippedTests[__FUNCTION__])) {
            $this->markTestSkipped($this->skippedTests[__FUNCTION__]);
        }

        $itemValidator = function (CacheItem $item) {
            $refl = new \ReflectionObject($item);
            $propExpiry = $refl->getProperty('expiry');
            $propExpiry->setAccessible(true);
            $expiry = $propExpiry->getValue($item);
            $this->assertGreaterThan(10, $expiry - time(), 'Item should be saved with the given ttl, not the default for the adapter.');

            return true;
        };

        $adapter1 = $this->getMockBuilder(FilesystemAdapter::class)
            ->setConstructorArgs(['', 2])
            ->onlyMethods(['save'])
            ->getMock();
        $adapter1->expects($this->once())
            ->method('save')
            ->with($this->callback($itemValidator))
            ->willReturn(true);

        $adapter2 = $this->getMockBuilder(FilesystemAdapter::class)
            ->setConstructorArgs(['', 4])
            ->onlyMethods(['save'])
            ->getMock();
        $adapter2->expects($this->once())
            ->method('save')
            ->with($this->callback($itemValidator))
            ->willReturn(true);

        $cache = new ChainAdapter([$adapter1, $adapter2], 6);
        $cache->get('test_key', function (ItemInterface $item) {
            $item->expiresAfter(15);

            return 'chain';
        });
    }

    private function getPruneableMock(): AdapterInterface
    {
        $pruneable = $this->createMock(PrunableAdapter::class);

        $pruneable
            ->expects($this->atLeastOnce())
            ->method('prune')
            ->willReturn(true);

        return $pruneable;
    }

    private function getFailingPruneableMock(): AdapterInterface
    {
        $pruneable = $this->createMock(PrunableAdapter::class);

        $pruneable
            ->expects($this->atLeastOnce())
            ->method('prune')
            ->willReturn(false);

        return $pruneable;
    }

    private function getNonPruneableMock(): AdapterInterface
    {
        return $this->createMock(AdapterInterface::class);
    }
}
