<?php

use MediaWiki\Api\ApiUsageException;
use MediaWiki\MainConfigNames;
use MediaWiki\Page\File\FileDeleteForm;
use MediaWiki\Tests\Api\ApiTestCase;
use MediaWiki\Title\Title;
use MediaWiki\User\User;
use Wikimedia\TestingAccessWrapper;

/**
 * @group large
 * @group Upload
 * @group Database
 *
 * @covers \UploadFromUrl
 */
class UploadFromUrlTest extends ApiTestCase {
	use MockHttpTrait;

	/** @var User */
	private $user;

	protected function setUp(): void {
		parent::setUp();
		$this->user = $this->getTestSysop()->getUser();

		$this->overrideConfigValues( [
			MainConfigNames::EnableUploads => true,
			MainConfigNames::AllowCopyUploads => true,
		] );
		$this->setGroupPermissions( 'sysop', 'upload_by_url', true );

		if ( $this->getServiceContainer()->getRepoGroup()->getLocalRepo()
			->newFile( 'UploadFromUrlTest.png' )->exists()
		) {
			$this->deleteFile( 'UploadFromUrlTest.png' );
		}

		$this->installMockHttp();
	}

	/**
	 * Ensure that the job queue is empty before continuing
	 */
	public function testClearQueue() {
		$jobQueueGroup = $this->getServiceContainer()->getJobQueueGroup();
		$job = $jobQueueGroup->pop();
		while ( $job ) {
			$job = $jobQueueGroup->pop();
		}
		$this->assertFalse( $job );
	}

	public function testIsAllowedHostEmpty() {
		$this->overrideConfigValues( [
			MainConfigNames::CopyUploadsDomains => [],
			MainConfigNames::CopyUploadAllowOnWikiDomainConfig => false,
		] );

		$this->assertTrue( UploadFromUrl::isAllowedHost( 'https://foo.bar' ) );
	}

	public function testIsAllowedHostDirectMatch() {
		$this->overrideConfigValues( [
			MainConfigNames::CopyUploadsDomains => [
				'foo.baz',
				'bar.example.baz',
			],
			MainConfigNames::CopyUploadAllowOnWikiDomainConfig => false,
		] );

		$this->assertFalse( UploadFromUrl::isAllowedHost( 'https://example.com' ) );

		$this->assertTrue( UploadFromUrl::isAllowedHost( 'https://foo.baz' ) );
		$this->assertFalse( UploadFromUrl::isAllowedHost( 'https://.foo.baz' ) );

		$this->assertFalse( UploadFromUrl::isAllowedHost( 'https://example.baz' ) );
		$this->assertTrue( UploadFromUrl::isAllowedHost( 'https://bar.example.baz' ) );
	}

	public function testIsAllowedHostLastWildcard() {
		$this->overrideConfigValues( [
			MainConfigNames::CopyUploadsDomains => [
				'*.baz',
			],
			MainConfigNames::CopyUploadAllowOnWikiDomainConfig => false,
		] );

		$this->assertFalse( UploadFromUrl::isAllowedHost( 'https://baz' ) );
		$this->assertFalse( UploadFromUrl::isAllowedHost( 'https://foo.example' ) );
		$this->assertFalse( UploadFromUrl::isAllowedHost( 'https://foo.example.baz' ) );
		$this->assertFalse( UploadFromUrl::isAllowedHost( 'https://foo/bar.baz' ) );

		$this->assertTrue( UploadFromUrl::isAllowedHost( 'https://foo.baz' ) );
		$this->assertFalse( UploadFromUrl::isAllowedHost( 'https://subdomain.foo.baz' ) );
	}

	public function testIsAllowedHostWildcardInMiddle() {
		$this->overrideConfigValues( [
			MainConfigNames::CopyUploadsDomains => [
				'foo.*.baz',
			],
			MainConfigNames::CopyUploadAllowOnWikiDomainConfig => false,
		] );

		$this->assertFalse( UploadFromUrl::isAllowedHost( 'https://foo.baz' ) );
		$this->assertFalse( UploadFromUrl::isAllowedHost( 'https://foo.bar.bar.baz' ) );
		$this->assertFalse( UploadFromUrl::isAllowedHost( 'https://foo.bar.baz.baz' ) );
		$this->assertFalse( UploadFromUrl::isAllowedHost( 'https://foo.com/.baz' ) );

		$this->assertTrue( UploadFromUrl::isAllowedHost( 'https://foo.example.baz' ) );
		$this->assertTrue( UploadFromUrl::isAllowedHost( 'https://foo.bar.baz' ) );
	}

	public function testOnWikiDomainConfigEnabled() {
		$this->overrideConfigValues( [
			MainConfigNames::CopyUploadsDomains => [ 'example.com' ],
			MainConfigNames::CopyUploadAllowOnWikiDomainConfig => true,
		] );

		$messageContent = "example.org # this is a comment\n# this too is commented foo.example.com\nexample.net";
		$mock = $this->createMock( MessageCache::class );
		$mock->method( 'get' )->willReturn( $messageContent );
		$this->setService( 'MessageCache', $mock );

		$this->assertEquals(
			[ 'example.com', 'example.org', 'example.net' ],
			TestingAccessWrapper::newFromClass( UploadFromUrl::class )->getAllowedHosts()
		);

		$this->assertTrue( UploadFromUrl::isAllowedHost( 'https://example.com' ) );
		$this->assertTrue( UploadFromUrl::isAllowedHost( 'https://example.org' ) );
		$this->assertFalse( UploadFromUrl::isAllowedHost( 'https://foo.example.com' ) );
	}

	public function testOnWikiDomainConfigDisabled() {
		$this->overrideConfigValues( [
			MainConfigNames::CopyUploadsDomains => [ 'example.com' ],
			MainConfigNames::CopyUploadAllowOnWikiDomainConfig => false,
		] );

		$mock = $this->createMock( MessageCache::class );
		$mock->expects( $this->never() )->method( 'get' );
		$this->setService( 'MessageCache', $mock );

		$this->assertEquals(
			[ 'example.com' ],
			TestingAccessWrapper::newFromClass( UploadFromUrl::class )->getAllowedHosts()
		);

		$this->assertTrue( UploadFromUrl::isAllowedHost( 'https://example.com' ) );
		$this->assertFalse( UploadFromUrl::isAllowedHost( 'https://example.org' ) );
	}

	/**
	 * @depends testClearQueue
	 */
	public function testSetupUrlDownload( $data ) {
		$token = $this->user->getEditToken();
		$exception = false;

		try {
			$this->doApiRequest( [
				'action' => 'upload',
			] );
		} catch ( ApiUsageException $e ) {
			$exception = true;
			$this->assertApiErrorCode( 'missingparam', $e );
		}
		$this->assertTrue( $exception, "Got exception" );

		$exception = false;
		try {
			$this->doApiRequest( [
				'action' => 'upload',
				'token' => $token,
			], $data );
		} catch ( ApiUsageException $e ) {
			$exception = true;
			$this->assertApiErrorCode( 'missingparam', $e );
		}
		$this->assertTrue( $exception, "Got exception" );

		$exception = false;
		try {
			$this->doApiRequest( [
				'action' => 'upload',
				'url' => 'http://www.example.com/test.png',
				'token' => $token,
			], $data );
		} catch ( ApiUsageException $e ) {
			$exception = true;
			$this->assertApiErrorCode( 'nofilename', $e );
		}
		$this->assertTrue( $exception, "Got exception" );

		$this->getServiceContainer()->getUserGroupManager()->removeUserFromGroup( $this->user, 'sysop' );
		$exception = false;
		try {
			$this->doApiRequest( [
				'action' => 'upload',
				'url' => 'http://www.example.com/test.png',
				'filename' => 'UploadFromUrlTest.png',
				'token' => $token,
			], $data );
		} catch ( ApiUsageException $e ) {
			$this->assertApiErrorCode( 'permissiondenied', $e );
			$exception = true;
		}
		$this->assertTrue( $exception, "Got exception" );
	}

	private function assertUploadOk( UploadBase $upload ) {
		$verificationResult = $upload->verifyUpload();

		if ( $verificationResult['status'] !== UploadBase::OK ) {
			$this->fail(
				'Upload verification returned ' . $upload->getVerificationErrorCode(
					$verificationResult['status']
				)
			);
		}
	}

	/**
	 * @depends testClearQueue
	 */
	public function testSyncDownload( $data ) {
		$file = __DIR__ . '/../../data/upload/png-plain.png';
		$this->installMockHttp( file_get_contents( $file ) );

		$this->getServiceContainer()->getUserGroupManager()->addUserToGroup( $this->user, 'users' );
		$data = $this->doApiRequestWithToken( [
			'action' => 'upload',
			'filename' => 'UploadFromUrlTest.png',
			'url' => 'http://upload.wikimedia.org/wikipedia/mediawiki/b/bc/Wiki.png',
			'ignorewarnings' => true,
		], $data );

		$this->assertEquals( 'Success', $data[0]['upload']['result'] );
		$this->deleteFile( 'UploadFromUrlTest.png' );

		return $data;
	}

	protected function deleteFile( $name ) {
		$t = Title::newFromText( $name, NS_FILE );
		$this->assertTrue( $t->exists(), "File '$name' exists" );

		if ( $t->exists() ) {
			$file = $this->getServiceContainer()->getRepoGroup()
				->findFile( $name, [ 'ignoreRedirect' => true ] );
			$empty = "";
			FileDeleteForm::doDelete( $t, $file, $empty, "none", true, $this->user );
			$page = $this->getServiceContainer()->getWikiPageFactory()->newFromTitle( $t );
			$this->deletePage( $page );
		}
		$t = Title::newFromText( $name, NS_FILE );

		$this->assertFalse( $t->exists(), "File '$name' was deleted" );
	}

	public function testUploadFromUrl() {
		$file = __DIR__ . '/../../data/upload/png-plain.png';
		$this->installMockHttp( file_get_contents( $file ) );

		$upload = new UploadFromUrl();
		$upload->initialize( 'Test.png', 'http://www.example.com/test.png' );
		$status = $upload->fetchFile();

		$this->assertStatusOK( $status );
		$this->assertUploadOk( $upload );
	}

	public function testUploadFromUrlWithRedirect() {
		$file = __DIR__ . '/../../data/upload/png-plain.png';
		$this->installMockHttp( [
			// First response is a redirect
			$this->makeFakeHttpRequest(
				'Blaba',
				302,
				[ 'Location' => 'http://static.example.com/files/test.png' ]
			),
			// Second response is a file
			$this->makeFakeHttpRequest(
				file_get_contents( $file )
			),
		] );

		$upload = new UploadFromUrl();
		$upload->initialize( 'Test.png', 'http://www.example.com/test.png' );
		$status = $upload->fetchFile();

		$this->assertStatusOK( $status );
		$this->assertUploadOk( $upload );
	}

	public function testUploadFromUrlCacheKey() {
		// Test we get back a properly formatted sha1 key out
		$key = UploadFromUrl::getCacheKey( [ 'filename' => 'test.png', 'url' => 'https://example.com/example.png' ] );
		$this->assertNotEmpty( $key );
		$this->assertMatchesRegularExpression( "/^[0-9a-f]{40}$/", $key );
	}

	public function testUploadFromUrlCacheKeyMissingParam() {
		$this->assertSame( "", UploadFromUrl::getCacheKey( [] ) );
	}

}