<?php

namespace SilverStripe\Control\Tests;

use SilverStripe\Control\Tests\DirectorTest\TestController;
use SilverStripe\Core\Config\Config;
use SilverStripe\Core\Injector\Injector;
use SilverStripe\Dev\SapphireTest;
use SilverStripe\Control\Director;
use SilverStripe\Control\RequestProcessor;

/**
 * @todo test Director::alternateBaseFolder()
 */
class DirectorTest extends SapphireTest {

	protected static $originalRequestURI;

	protected $originalProtocolHeaders = array();

	protected $originalGet = array();

	protected $originalSession = array();

	protected $extraControllers = [
		TestController::class
	];

	public function setUp() {
		parent::setUp();


		// Hold the original request URI once so it doesn't get overwritten
		if(!self::$originalRequestURI) {
			self::$originalRequestURI = $_SERVER['REQUEST_URI'];
		}
		$_SERVER['REQUEST_URI'] = 'http://www.mysite.com';

		$this->originalGet = $_GET;
		$this->originalSession = $_SESSION;
		$_SESSION = array();

		Config::inst()->update('SilverStripe\\Control\\Director', 'rules', array(
			'DirectorTestRule/$Action/$ID/$OtherID' => TestController::class,
			'en-nz/$Action/$ID/$OtherID' => array(
				'Controller' => TestController::class,
				'Locale' => 'en_NZ'
			)
		));

		$headers = array(
			'HTTP_X_FORWARDED_PROTOCOL', 'HTTPS', 'SSL'
		);

		foreach($headers as $header) {
			if(isset($_SERVER[$header])) {
				$this->originalProtocolHeaders[$header] = $_SERVER[$header];
			}
		}

		Config::inst()->update('SilverStripe\\Control\\Director', 'alternate_base_url', '/');
	}

	public function tearDown() {
		// TODO Remove director rule, currently API doesnt allow this

		$_GET = $this->originalGet;
		$_SESSION = $this->originalSession;

		// Reinstate the original REQUEST_URI after it was modified by some tests
		$_SERVER['REQUEST_URI'] = self::$originalRequestURI;

		if($this->originalProtocolHeaders) {
			foreach($this->originalProtocolHeaders as $header => $value) {
				$_SERVER[$header] = $value;
			}
		}


		parent::tearDown();
	}

	public function testFileExists() {
		$tempFileName = 'DirectorTest_testFileExists.tmp';
		$tempFilePath = TEMP_FOLDER . '/' . $tempFileName;

		// create temp file
		file_put_contents($tempFilePath, '');

		$this->assertTrue(
			Director::fileExists($tempFilePath),
			'File exist check with absolute path'
		);

		$this->assertTrue(
			Director::fileExists($tempFilePath . '?queryparams=1&foo[bar]=bar'),
			'File exist check with query params ignored'
		);

		unlink($tempFilePath);
	}

	public function testAbsoluteURL() {

		$rootURL = Director::protocolAndHost();
		$_SERVER['REQUEST_URI'] = "$rootURL/mysite/sub-page/";
		Config::inst()->update('SilverStripe\\Control\\Director', 'alternate_base_url', '/mysite/');

		//test empty / local urls
		foreach(array('', './', '.') as $url) {
			$this->assertEquals("$rootURL/mysite/", Director::absoluteURL($url, Director::BASE));
			$this->assertEquals("$rootURL/", Director::absoluteURL($url, Director::ROOT));
			$this->assertEquals("$rootURL/mysite/sub-page/", Director::absoluteURL($url, Director::REQUEST));
		}

		// Test site root url
		$this->assertEquals("$rootURL/", Director::absoluteURL('/'));

		// Test Director::BASE
		$this->assertEquals($rootURL, Director::absoluteURL($rootURL, Director::BASE));
		$this->assertEquals('http://www.mytest.com', Director::absoluteURL('http://www.mytest.com', Director::BASE));
		$this->assertEquals("$rootURL/test", Director::absoluteURL("$rootURL/test", Director::BASE));
		$this->assertEquals("$rootURL/root", Director::absoluteURL("/root", Director::BASE));
		$this->assertEquals("$rootURL/root/url", Director::absoluteURL("/root/url", Director::BASE));

		// Test Director::ROOT
		$this->assertEquals($rootURL, Director::absoluteURL($rootURL, Director::ROOT));
		$this->assertEquals('http://www.mytest.com', Director::absoluteURL('http://www.mytest.com', Director::ROOT));
		$this->assertEquals("$rootURL/test", Director::absoluteURL("$rootURL/test", Director::ROOT));
		$this->assertEquals("$rootURL/root", Director::absoluteURL("/root", Director::ROOT));
		$this->assertEquals("$rootURL/root/url", Director::absoluteURL("/root/url", Director::ROOT));

		// Test Director::REQUEST
		$this->assertEquals($rootURL, Director::absoluteURL($rootURL, Director::REQUEST));
		$this->assertEquals('http://www.mytest.com', Director::absoluteURL('http://www.mytest.com', Director::REQUEST));
		$this->assertEquals("$rootURL/test", Director::absoluteURL("$rootURL/test", Director::REQUEST));
		$this->assertEquals("$rootURL/root", Director::absoluteURL("/root", Director::REQUEST));
		$this->assertEquals("$rootURL/root/url", Director::absoluteURL("/root/url", Director::REQUEST));

		// Test evaluating relative urls relative to base (default)
		$this->assertEquals("$rootURL/mysite/test", Director::absoluteURL("test"));
		$this->assertEquals("$rootURL/mysite/test/url", Director::absoluteURL("test/url"));
		$this->assertEquals("$rootURL/mysite/test", Director::absoluteURL("test", Director::BASE));
		$this->assertEquals("$rootURL/mysite/test/url", Director::absoluteURL("test/url", Director::BASE));

		// Test evaluting relative urls relative to root
		$this->assertEquals("$rootURL/test", Director::absoluteURL("test", Director::ROOT));
		$this->assertEquals("$rootURL/test/url", Director::absoluteURL("test/url", Director::ROOT));

		// Test relative to requested page
		$this->assertEquals("$rootURL/mysite/sub-page/test", Director::absoluteURL("test", Director::REQUEST));
		$this->assertEquals("$rootURL/mysite/sub-page/test/url", Director::absoluteURL("test/url", Director::REQUEST));

		// Test that javascript links are not left intact
		$this->assertStringStartsNotWith('javascript', Director::absoluteURL('javascript:alert("attack")'));
		$this->assertStringStartsNotWith('alert', Director::absoluteURL('javascript:alert("attack")'));
		$this->assertStringStartsNotWith('javascript', Director::absoluteURL('alert("attack")'));
		$this->assertStringStartsNotWith('alert', Director::absoluteURL('alert("attack")'));
	}

	public function testAlternativeBaseURL() {
		// Get original protocol and hostname
		$rootURL = Director::protocolAndHost();

		// relative base URLs - you should end them in a /
		Config::inst()->update('SilverStripe\\Control\\Director', 'alternate_base_url', '/relativebase/');
		$_SERVER['REQUEST_URI'] = "$rootURL/relativebase/sub-page/";

		$this->assertEquals('/relativebase/', Director::baseURL());
		$this->assertEquals($rootURL . '/relativebase/', Director::absoluteBaseURL());
		$this->assertEquals(
			$rootURL . '/relativebase/subfolder/test',
			Director::absoluteURL('subfolder/test')
		);

		// absolute base URLs - you should end them in a /
		Config::inst()->update('SilverStripe\\Control\\Director', 'alternate_base_url', 'http://www.example.org/');
		$_SERVER['REQUEST_URI'] = "http://www.example.org/sub-page/";
		$this->assertEquals('http://www.example.org/', Director::baseURL());
		$this->assertEquals('http://www.example.org/', Director::absoluteBaseURL());
		$this->assertEquals('http://www.example.org/sub-page/', Director::absoluteURL('', Director::REQUEST));
		$this->assertEquals('http://www.example.org/', Director::absoluteURL('', Director::BASE));
		$this->assertEquals('http://www.example.org/', Director::absoluteURL('', Director::ROOT));
		$this->assertEquals(
			'http://www.example.org/sub-page/subfolder/test',
			Director::absoluteURL('subfolder/test', Director::REQUEST)
		);
		$this->assertEquals(
			'http://www.example.org/subfolder/test',
			Director::absoluteURL('subfolder/test', Director::ROOT)
		);
		$this->assertEquals(
			'http://www.example.org/subfolder/test',
			Director::absoluteURL('subfolder/test', Director::BASE)
		);
	}

	/**
	 * Tests that {@link Director::is_absolute()} works under different environment types
	 */
	public function testIsAbsolute() {
		$expected = array (
			'C:/something' => true,
			'd:\\'         => true,
			'e/'           => false,
			's:/directory' => true,
			'/var/www'     => true,
			'\\Something'  => true,
			'something/c:' => false,
			'folder'       => false,
			'a/c:/'        => false
		);

		foreach($expected as $path => $result) {
			$this->assertEquals(Director::is_absolute($path), $result, "Test result for $path");
		}
	}

	public function testIsAbsoluteUrl() {
		$this->assertTrue(Director::is_absolute_url('http://test.com/testpage'));
		$this->assertTrue(Director::is_absolute_url('ftp://test.com'));
		$this->assertFalse(Director::is_absolute_url('test.com/testpage'));
		$this->assertFalse(Director::is_absolute_url('/relative'));
		$this->assertFalse(Director::is_absolute_url('relative'));
		$this->assertFalse(Director::is_absolute_url("/relative/?url=http://foo.com"));
		$this->assertFalse(Director::is_absolute_url("/relative/#http://foo.com"));
		$this->assertTrue(Director::is_absolute_url("https://test.com/?url=http://foo.com"));
		$this->assertTrue(Director::is_absolute_url("trickparseurl:http://test.com"));
		$this->assertTrue(Director::is_absolute_url('//test.com'));
		$this->assertTrue(Director::is_absolute_url('/////test.com'));
		$this->assertTrue(Director::is_absolute_url('  ///test.com'));
		$this->assertTrue(Director::is_absolute_url('http:test.com'));
		$this->assertTrue(Director::is_absolute_url('//http://test.com'));
	}

	public function testIsRelativeUrl() {
		$siteUrl = Director::absoluteBaseURL();
		$this->assertFalse(Director::is_relative_url('http://test.com'));
		$this->assertFalse(Director::is_relative_url('https://test.com'));
		$this->assertFalse(Director::is_relative_url('   https://test.com/testpage   '));
		$this->assertTrue(Director::is_relative_url('test.com/testpage'));
		$this->assertFalse(Director::is_relative_url('ftp://test.com'));
		$this->assertTrue(Director::is_relative_url('/relative'));
		$this->assertTrue(Director::is_relative_url('relative'));
		$this->assertTrue(Director::is_relative_url('/relative/?url=http://test.com'));
		$this->assertTrue(Director::is_relative_url('/relative/#=http://test.com'));
	}

	public function testMakeRelative() {
		$siteUrl = Director::absoluteBaseURL();
		$siteUrlNoProtocol = preg_replace('/https?:\/\//', '', $siteUrl);

		$this->assertEquals(Director::makeRelative("$siteUrl"), '');
		$this->assertEquals(Director::makeRelative("https://$siteUrlNoProtocol"), '');
		$this->assertEquals(Director::makeRelative("http://$siteUrlNoProtocol"), '');

		$this->assertEquals(Director::makeRelative("   $siteUrl/testpage   "), 'testpage');
		$this->assertEquals(Director::makeRelative("$siteUrlNoProtocol/testpage"), 'testpage');

		$this->assertEquals(Director::makeRelative('ftp://test.com'), 'ftp://test.com');
		$this->assertEquals(Director::makeRelative('http://test.com'), 'http://test.com');

		$this->assertEquals(Director::makeRelative('relative'), 'relative');
		$this->assertEquals(Director::makeRelative("$siteUrl/?url=http://test.com"), '?url=http://test.com');

		$this->assertEquals("test", Director::makeRelative("https://".$siteUrlNoProtocol."/test"));
		$this->assertEquals("test", Director::makeRelative("http://".$siteUrlNoProtocol."/test"));
	}

	/**
	 * Mostly tested by {@link testIsRelativeUrl()},
	 * just adding the host name matching aspect here.
	 */
	public function testIsSiteUrl() {
		$this->assertFalse(Director::is_site_url("http://test.com"));
		$this->assertTrue(Director::is_site_url(Director::absoluteBaseURL()));
		$this->assertFalse(Director::is_site_url("http://test.com?url=" . Director::absoluteBaseURL()));
		$this->assertFalse(Director::is_site_url("http://test.com?url=" . urlencode(Director::absoluteBaseURL())));
		$this->assertFalse(Director::is_site_url("//test.com?url=" . Director::absoluteBaseURL()));
	}

	/**
	 * Tests isDev, isTest, isLive set from querystring
	 */
	public function testQueryIsEnvironment() {
		// Reset
		unset($_SESSION['isDev']);
		unset($_SESSION['isLive']);
		unset($_GET['isTest']);
		unset($_GET['isDev']);
		$_SESSION = $_SESSION ?: array();

		// Test isDev=1
		$_GET['isDev'] = '1';
		$this->assertTrue(Director::isDev());
		$this->assertFalse(Director::isTest());
		$this->assertFalse(Director::isLive());

		// Test persistence
		unset($_GET['isDev']);
		$this->assertTrue(Director::isDev());
		$this->assertFalse(Director::isTest());
		$this->assertFalse(Director::isLive());

		// Test change to isTest
		$_GET['isTest'] = '1';
		$this->assertFalse(Director::isDev());
		$this->assertTrue(Director::isTest());
		$this->assertFalse(Director::isLive());

		// Test persistence
		unset($_GET['isTest']);
		$this->assertFalse(Director::isDev());
		$this->assertTrue(Director::isTest());
		$this->assertFalse(Director::isLive());
	}

	public function testResetGlobalsAfterTestRequest() {
		$_GET = array('somekey' => 'getvalue');
		$_POST = array('somekey' => 'postvalue');
		$_COOKIE = array('somekey' => 'cookievalue');

		$cookies = Injector::inst()->createWithArgs(
			'SilverStripe\\Control\\Cookie_Backend',
			array(array('somekey' => 'sometestcookievalue'))
		);

		$getresponse = Director::test('errorpage?somekey=sometestgetvalue', array('somekey' => 'sometestpostvalue'),
			null, null, null, null, $cookies);

		$this->assertEquals('getvalue', $_GET['somekey'],
			'$_GET reset to original value after Director::test()');
		$this->assertEquals('postvalue', $_POST['somekey'],
			'$_POST reset to original value after Director::test()');
		$this->assertEquals('cookievalue', $_COOKIE['somekey'],
			'$_COOKIE reset to original value after Director::test()');
	}

	public function testTestRequestCarriesGlobals() {
		$fixture = array('somekey' => 'sometestvalue');
		foreach(array('get', 'post') as $method) {
			foreach(array('return%sValue', 'returnRequestValue', 'returnCookieValue') as $testfunction) {
				$url = 'TestController/' . sprintf($testfunction, ucfirst($method))
					. '?' . http_build_query($fixture);

				$getresponse = Director::test(
					$url,
					$fixture,
					null,
					strtoupper($method),
					null,
					null,
					Injector::inst()->createWithArgs('SilverStripe\\Control\\Cookie_Backend', array($fixture))
				);

				$this->assertInstanceOf('SilverStripe\\Control\\HTTPResponse', $getresponse, 'Director::test() returns HTTPResponse');
				$this->assertEquals($fixture['somekey'], $getresponse->getBody(), 'Director::test() ' . $testfunction);
			}
		}
	}

	/**
	 * Tests that additional parameters specified in the routing table are
	 * saved in the request
	 */
	public function testRouteParams() {
		Director::test('en-nz/myaction/myid/myotherid', null, null, null, null, null, null, $request);

		$this->assertEquals(
			array(
				'Controller' => TestController::class,
				'Action' => 'myaction',
				'ID' => 'myid',
				'OtherID' => 'myotherid',
				'Locale' => 'en_NZ'
			),
            $request->params()
		);
	}

	public function testForceSSLProtectsEntireSite() {
		$_SERVER['REQUEST_URI'] = '/admin';
		$output = Director::forceSSL();
		$this->assertEquals($output, 'https://' . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI']);

		$_SERVER['REQUEST_URI'] = Director::baseURL() . 'some-url';
		$output = Director::forceSSL();
		$this->assertEquals($output, 'https://' . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI']);
	}

	public function testForceSSLOnTopLevelPagePattern() {
		$_SERVER['REQUEST_URI'] = Director::baseURL() . 'admin';
		$output = Director::forceSSL(array('/^admin/'));
		$this->assertEquals($output, 'https://' . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI']);
	}

	public function testForceSSLOnSubPagesPattern() {
		$_SERVER['REQUEST_URI'] = Director::baseURL() . Config::inst()->get('SilverStripe\\Security\\Security', 'login_url');
		$output = Director::forceSSL(array('/^Security/'));
		$this->assertEquals($output, 'https://' . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI']);
	}

	public function testForceSSLWithPatternDoesNotMatchOtherPages() {
		$_SERVER['REQUEST_URI'] = Director::baseURL() . 'normal-page';
		$output = Director::forceSSL(array('/^admin/'));
		$this->assertFalse($output);

		$_SERVER['REQUEST_URI'] = Director::baseURL() . 'just-another-page/sub-url';
		$output = Director::forceSSL(array('/^admin/', '/^Security/'));
		$this->assertFalse($output);
	}

	public function testForceSSLAlternateDomain() {
		Config::inst()->update('SilverStripe\\Control\\Director', 'alternate_base_url', '/');
		$_SERVER['REQUEST_URI'] = Director::baseURL() . 'admin';
		$output = Director::forceSSL(array('/^admin/'), 'secure.mysite.com');
		$this->assertEquals($output, 'https://secure.mysite.com/admin');
	}

	/**
	 * @covers \SilverStripe\Control\Director::extract_request_headers()
	 */
	public function testExtractRequestHeaders() {
		$request = array(
			'REDIRECT_STATUS'      => '200',
			'HTTP_HOST'            => 'host',
			'HTTP_USER_AGENT'      => 'User Agent',
			'HTTP_ACCEPT'          => 'text/html',
			'HTTP_ACCEPT_LANGUAGE' => 'en-us',
			'HTTP_COOKIE'          => 'MyCookie=1',
			'SERVER_PROTOCOL'      => 'HTTP/1.1',
			'REQUEST_METHOD'       => 'GET',
			'REQUEST_URI'          => '/',
			'SCRIPT_NAME'          => FRAMEWORK_DIR . '/main.php',
			'CONTENT_TYPE'         => 'text/xml',
			'CONTENT_LENGTH'       => 10
		);

		$headers = array(
			'Host'            => 'host',
			'User-Agent'      => 'User Agent',
			'Accept'          => 'text/html',
			'Accept-Language' => 'en-us',
			'Cookie'          => 'MyCookie=1',
			'Content-Type'    => 'text/xml',
			'Content-Length'  => '10'
		);

		$this->assertEquals($headers, Director::extract_request_headers($request));
	}

	public function testUnmatchedRequestReturns404() {
		$this->assertEquals(404, Director::test('no-route')->getStatusCode());
	}

	public function testIsHttps() {
		if(!TRUSTED_PROXY) {
			$this->markTestSkipped('Test cannot be run without trusted proxy');
		}
		// nothing available
		$headers = array(
			'HTTP_X_FORWARDED_PROTOCOL', 'HTTPS', 'SSL'
		);

		$origServer = $_SERVER;

		foreach($headers as $header) {
			if(isset($_SERVER[$header])) {
				unset($_SERVER['HTTP_X_FORWARDED_PROTOCOL']);
			}
		}

		$this->assertFalse(Director::is_https());

		$_SERVER['HTTP_X_FORWARDED_PROTOCOL'] = 'https';
		$this->assertTrue(Director::is_https());

		$_SERVER['HTTP_X_FORWARDED_PROTOCOL'] = 'http';
		$this->assertFalse(Director::is_https());

		$_SERVER['HTTP_X_FORWARDED_PROTOCOL'] = 'ftp';
		$this->assertFalse(Director::is_https());

		$_SERVER['HTTP_X_FORWARDED_PROTO'] = 'https';
		$this->assertTrue(Director::is_https());

		$_SERVER['HTTP_X_FORWARDED_PROTO'] = 'http';
		$this->assertFalse(Director::is_https());

		$_SERVER['HTTP_X_FORWARDED_PROTO'] = 'ftp';
		$this->assertFalse(Director::is_https());

		$_SERVER['HTTP_FRONT_END_HTTPS'] = 'On';
		$this->assertTrue(Director::is_https());

		$_SERVER['HTTP_FRONT_END_HTTPS'] = 'Off';
		$this->assertFalse(Director::is_https());

		// https via HTTPS
		$_SERVER['HTTPS'] = 'true';
		$this->assertTrue(Director::is_https());

		$_SERVER['HTTPS'] = '1';
		$this->assertTrue(Director::is_https());

		$_SERVER['HTTPS'] = 'off';
		$this->assertFalse(Director::is_https());

		// https via SSL
		$_SERVER['SSL'] = '';
		$this->assertTrue(Director::is_https());

		$_SERVER = $origServer;
	}

	public function testTestIgnoresHashes() {
		//test that hashes are ignored
		$url = "TestController/returnGetValue?somekey=key";
		$hash = "#test";
		$response = Director::test($url . $hash, null, null, null, null, null, null, $request);
		$this->assertFalse($response->isError());
		$this->assertEquals('key', $response->getBody());
		$this->assertEquals($request->getURL(true), $url);

		//test encoded hashes are accepted
		$url = "TestController/returnGetValue?somekey=test%23key";
		$response = Director::test($url, null, null, null, null, null, null, $request);
		$this->assertFalse($response->isError());
		$this->assertEquals('test#key', $response->getBody());
		$this->assertEquals($request->getURL(true), $url);
	}

	public function testRequestFilterInDirectorTest() {
		$filter = new DirectorTest\TestRequestFilter;

		$processor = new RequestProcessor(array($filter));

		Injector::inst()->registerService($processor, 'SilverStripe\\Control\\RequestProcessor');

		$response = Director::test('some-dummy-url');

		$this->assertEquals(1, $filter->preCalls);
		$this->assertEquals(1, $filter->postCalls);

		$filter->failPost = true;

		$this->setExpectedException('SilverStripe\\Control\\HTTPResponse_Exception');

		$response = Director::test('some-dummy-url');

		$this->assertEquals(2, $filter->preCalls);
		$this->assertEquals(2, $filter->postCalls);

		$filter->failPre = true;

		$response = Director::test('some-dummy-url');

		$this->assertEquals(3, $filter->preCalls);

		// preCall 'false' will trigger an exception and prevent post call execution
		$this->assertEquals(2, $filter->postCalls);
	}
}