<?php

namespace SMW\Tests\MediaWiki;

use SMW\MediaWiki\PageUpdater;
use SMW\Tests\PHPUnitCompat;
use SMW\Tests\TestEnvironment;

/**
 * @covers \SMW\MediaWiki\PageUpdater
 * @group semantic-mediawiki
 *
 * @license GPL-2.0-or-later
 * @since   2.1
 *
 * @author mwjames
 */
class PageUpdaterTest extends \PHPUnit\Framework\TestCase {

	use PHPUnitCompat;

	private $connection;
	private $spyLogger;

	protected function setUp(): void {
		parent::setup();

		$this->spyLogger = TestEnvironment::newSpyLogger();

		$this->connection = $this->getMockBuilder( '\SMW\MediaWiki\Connection\Database' )
			->disableOriginalConstructor()
			->getMock();
	}

	public function testCanConstruct() {
		$this->assertInstanceOf(
			'\SMW\MediaWiki\PageUpdater',
			 new PageUpdater()
		);
	}

	public function testCanUpdate() {
		$instance = new PageUpdater();

		$this->assertIsBool(

			 $instance->canUpdate()
		);
	}

	/**
	 * @dataProvider purgeMethodProvider
	 */
	public function testPurge( $purgeMethod, $titleMethod ) {
		$title = $this->getMockBuilder( '\MediaWiki\Title\Title' )
			->disableOriginalConstructor()
			->getMock();

		$title->expects( $this->once() )
			->method( 'getDBKey' )
			->willReturn( 'Foo' );

		$title->expects( $this->once() )
			->method( $titleMethod );

		$instance = new PageUpdater();
		$instance->addPage( $title );

		call_user_func( [ $instance, $purgeMethod ] );
	}

	public function testDisablePurgeHtmlCache() {
		$title = $this->getMockBuilder( '\MediaWiki\Title\Title' )
			->disableOriginalConstructor()
			->getMock();

		$title->expects( $this->once() )
			->method( 'getDBKey' )
			->willReturn( 'Foo' );

		$title->expects( $this->never() )
			->method( 'touchLinks' );

		$instance = new PageUpdater();
		$instance->addPage( $title );

		$instance->isHtmlCacheUpdate( false );
		$instance->doPurgeHtmlCache();
	}

	public function testFilterDuplicatePages() {
		$title = $this->getMockBuilder( '\MediaWiki\Title\Title' )
			->disableOriginalConstructor()
			->getMock();

		$title->expects( $this->exactly( 2 ) )
			->method( 'getDBKey' )
			->willReturn( 'Foo' );

		$title->expects( $this->once() )
			->method( 'invalidateCache' );

		$instance = new PageUpdater();
		$instance->addPage( $title );
		$instance->addPage( $title );

		$instance->doPurgeParserCache();
	}

	/**
	 * @dataProvider purgeMethodProvider
	 */
	public function testPurgeOnTransactionIdle( $purgeMethod, $titleMethod ) {
		$title = $this->getMockBuilder( '\MediaWiki\Title\Title' )
			->disableOriginalConstructor()
			->getMock();

		$title->expects( $this->once() )
			->method( 'getDBKey' )
			->willReturn( 'Foo' );

		$title->expects( $this->once() )
			->method( $titleMethod );

		$instance = new PageUpdater();
		$instance->addPage( $title );

		$instance->waitOnTransactionIdle();

		call_user_func( [ $instance, $purgeMethod ] );

		$instance->doUpdate();
	}

	/**
	 * @dataProvider purgeMethodProvider
	 */
	public function testPurgeWillNotWaitOnTransactionIdleForMissingConnection( $purgeMethod, $titleMethod ) {
		$title = $this->getMockBuilder( '\MediaWiki\Title\Title' )
			->disableOriginalConstructor()
			->getMock();

		$title->expects( $this->once() )
			->method( 'getDBKey' )
			->willReturn( 'Foo' );

		$title->expects( $this->once() )
			->method( $titleMethod );

		$instance = new PageUpdater();
		$instance->addPage( $title );

		$instance->waitOnTransactionIdle();

		call_user_func( [ $instance, $purgeMethod ] );

		$instance->doUpdate();
	}

	/**
	 * @dataProvider purgeMethodProvider
	 */
	public function testPurgeWillNotWaitOnTransactionIdleWhenCommandLineIsTrue( $purgeMethod, $titleMethod ) {
		$this->connection->expects( $this->never() )
			->method( 'onTransactionCommitOrIdle' );

		$title = $this->getMockBuilder( '\MediaWiki\Title\Title' )
			->disableOriginalConstructor()
			->getMock();

		$title->expects( $this->once() )
			->method( 'getDBKey' )
			->willReturn( 'Foo' );

		$title->expects( $this->once() )
			->method( $titleMethod );

		$instance = new PageUpdater( $this->connection );
		$instance->addPage( $title );

		$instance->waitOnTransactionIdle();

		call_user_func( [ $instance, $purgeMethod ] );

		$instance->doUpdate();
	}

	public function testAddNullPage() {
		$title = $this->getMockBuilder( '\MediaWiki\Title\Title' )
			->disableOriginalConstructor()
			->getMock();

		$title->expects( $this->never() )
			->method( 'getDBKey' )
			->willReturn( 'Foo' );

		$instance = new PageUpdater();
		$instance->addPage( null );
	}

	/**
	 * @dataProvider purgeMethodProvider
	 */
	public function testPushPendingWaitableUpdate( $purgeMethod, $titleMethod ) {
		$transactionalCallableUpdate = $this->getMockBuilder( '\SMW\MediaWiki\Deferred\TransactionalCallableUpdate' )
			->disableOriginalConstructor()
			->getMock();

		$transactionalCallableUpdate->expects( $this->once() )
			->method( 'pushUpdate' );

		$transactionalCallableUpdate->expects( $this->once() )
			->method( 'setFingerprint' )
			->with( 'Foobar' );

		$transactionalCallableUpdate->expects( $this->once() )
			->method( 'waitOnTransactionIdle' );

		$transactionalCallableUpdate->expects( $this->once() )
			->method( 'markAsPending' );

		$title = $this->getMockBuilder( '\MediaWiki\Title\Title' )
			->disableOriginalConstructor()
			->getMock();

		$title->expects( $this->once() )
			->method( 'getDBKey' )
			->willReturn( 'Foo' );

		$instance = new PageUpdater(
			$this->connection,
			$transactionalCallableUpdate
		);

		$instance->addPage( $title );
		$instance->setFingerprint( 'Foobar' );

		$instance->markAsPending();
		$instance->waitOnTransactionIdle();

		call_user_func( [ $instance, $purgeMethod ] );

		$instance->pushUpdate();
	}

	public function testPurgeCacheAsPoolPurge() {
		$row = new \stdClass;
		$row->page_id = 42;

		$this->connection->expects( $this->once() )
			->method( 'select' )
			->willReturn( [ $row ] );

		$this->connection->expects( $this->once() )
			->method( 'update' );

		$this->connection->expects( $this->once() )
			->method( 'onTransactionCommitOrIdle' )
			->willReturnCallback( static function ( $callback ) {
				return call_user_func( $callback );
			}
			);

		$title = $this->getMockBuilder( '\MediaWiki\Title\Title' )
			->disableOriginalConstructor()
			->getMock();

		$title->expects( $this->any() )
			->method( 'getDBKey' )
			->willReturn( 'Foo' );

		$title->expects( $this->never() )
			->method( 'invalidateCache' );

		$instance = new PageUpdater( $this->connection );
		$instance->setLogger( $this->spyLogger );
		$instance->addPage( $title );

		$instance->waitOnTransactionIdle();
		$instance->doPurgeParserCacheAsPool();
	}

	public function purgeMethodProvider() {
		$provider[] = [
			'doPurgeParserCache',
			'invalidateCache'
		];

		$provider[] = [
			'doPurgeHtmlCache',
			'touchLinks'
		];

		return $provider;
	}

}