<?php

use Codeception\Util\Fixtures;
use Grav\Common\Grav;
use Grav\Common\Page\Markdown\Excerpts;
use Grav\Common\Uri;
use Grav\Common\Config\Config;
use Grav\Common\Page\Pages;
use Grav\Common\Markdown\Parsedown;
use Grav\Common\Language\Language;
use RocketTheme\Toolbox\ResourceLocator\UniformResourceLocator;


/**
 * Class ParsedownTest
 */
class ParsedownTest extends \Codeception\TestCase\Test
{
    /** @var Parsedown $parsedown */
    protected $parsedown;

    /** @var Grav $grav */
    protected $grav;

    /** @var Pages $pages */
    protected $pages;

    /** @var Config $config */
    protected $config;

    /** @var  Uri $uri */
    protected $uri;

    /** @var  Language $language */
    protected $language;

    protected $old_home;

    protected function _before()
    {
        $grav = Fixtures::get('grav');
        $this->grav = $grav();
        $this->pages = $this->grav['pages'];
        $this->config = $this->grav['config'];
        $this->uri = $this->grav['uri'];
        $this->language = $this->grav['language'];
        $this->old_home = $this->config->get('system.home.alias');
        $this->config->set('system.home.alias', '/item1');
        $this->config->set('system.absolute_urls', false);
        $this->config->set('system.languages.supported', []);

        unset($this->grav['language']);
        $this->grav['language'] = new Language($this->grav);

        /** @var UniformResourceLocator $locator */
        $locator = $this->grav['locator'];
        $locator->addPath('page', '', 'tests/fake/nested-site/user/pages', false);
        $this->pages->init();

        $defaults = [
            'markdown' => [
                'extra'            => false,
                'auto_line_breaks' => false,
                'auto_url_links'   => false,
                'escape_markup'    => false,
                'special_chars'    => ['>' => 'gt', '<' => 'lt'],
            ],
            'images' => $this->config->get('system.images', [])
        ];
        $page = $this->pages->find('/item2/item2-2');

        $excerpts = new Excerpts($page, $defaults);
        $this->parsedown = new Parsedown($excerpts);
    }

    protected function _after()
    {
        $this->config->set('system.home.alias', $this->old_home);
    }

    public function testImages()
    {
        $this->config->set('system.languages.supported', ['fr','en']);
        unset($this->grav['language']);
        $this->grav['language'] = new Language($this->grav);
        $this->uri->initializeWithURL('http://testing.dev/fr/item2/item2-2')->init();

        $this->assertSame('<p><img alt="" src="/tests/fake/nested-site/user/pages/02.item2/02.item2-2/sample-image.jpg" /></p>',
            $this->parsedown->text('![](sample-image.jpg)'));
        $this->assertRegexp('|<p><img alt="" src="\/images\/.*-cache-image.jpe?g\?foo=1" \/><\/p>|',
            $this->parsedown->text('![](cache-image.jpg?cropResize=200,200&foo)'));

        $this->uri->initializeWithURL('http://testing.dev/item2/item2-2')->init();

        $this->assertSame('<p><img alt="" src="/tests/fake/nested-site/user/pages/02.item2/02.item2-2/sample-image.jpg" /></p>',
            $this->parsedown->text('![](sample-image.jpg)'));
        $this->assertRegexp('|<p><img alt="" src="\/images\/.*-cache-image.jpe?g\?foo=1" \/><\/p>|',
            $this->parsedown->text('![](cache-image.jpg?cropResize=200,200&foo)'));
        $this->assertRegexp('|<p><img alt="" src="\/images\/.*-home-cache-image.jpe?g" \/><\/p>|',
            $this->parsedown->text('![](/home-cache-image.jpg?cache)'));
        $this->assertSame('<p><img src="/item2/item2-2/missing-image.jpg" alt="" /></p>',
            $this->parsedown->text('![](missing-image.jpg)'));
        $this->assertSame('<p><img src="/home-missing-image.jpg" alt="" /></p>',
            $this->parsedown->text('![](/home-missing-image.jpg)'));
        $this->assertSame('<p><img src="/home-missing-image.jpg" alt="" /></p>',
            $this->parsedown->text('![](/home-missing-image.jpg)'));
        $this->assertSame('<p><img src="https://getgrav-grav.netdna-ssl.com/user/pages/media/grav-logo.svg" alt="" /></p>',
            $this->parsedown->text('![](https://getgrav-grav.netdna-ssl.com/user/pages/media/grav-logo.svg)'));

   }

    public function testImagesSubDir()
    {
        $this->uri->initializeWithUrlAndRootPath('http://testing.dev/subdir/item2/item2-2', '/subdir')->init();

        $this->assertRegexp('|<p><img alt="" src="\/subdir\/images\/.*-home-cache-image.jpe?g" \/><\/p>|',
            $this->parsedown->text('![](/home-cache-image.jpg?cache)'));
        $this->assertSame('<p><img alt="" src="/subdir/tests/fake/nested-site/user/pages/02.item2/02.item2-2/sample-image.jpg" /></p>',
            $this->parsedown->text('![](sample-image.jpg)'));
        $this->assertRegexp('|<p><img alt="" src="\/subdir\/images\/.*-cache-image.jpe?g" \/><\/p>|',
            $this->parsedown->text('![](cache-image.jpg?cache)'));
        $this->assertSame('<p><img src="/subdir/item2/item2-2/missing-image.jpg" alt="" /></p>',
            $this->parsedown->text('![](missing-image.jpg)'));
        $this->assertSame('<p><img src="/subdir/home-missing-image.jpg" alt="" /></p>',
            $this->parsedown->text('![](/home-missing-image.jpg)'));

    }

    public function testImagesAbsoluteUrls()
    {
        $this->config->set('system.absolute_urls', true);
        $this->uri->initializeWithURL('http://testing.dev/item2/item2-2')->init();

        $this->assertSame('<p><img alt="" src="http://testing.dev/tests/fake/nested-site/user/pages/02.item2/02.item2-2/sample-image.jpg" /></p>',
            $this->parsedown->text('![](sample-image.jpg)'));
        $this->assertRegexp('|<p><img alt="" src="http:\/\/testing.dev\/images\/.*-cache-image.jpe?g" \/><\/p>|',
            $this->parsedown->text('![](cache-image.jpg?cache)'));
        $this->assertRegexp('|<p><img alt="" src="http:\/\/testing.dev\/images\/.*-home-cache-image.jpe?g" \/><\/p>|',
            $this->parsedown->text('![](/home-cache-image.jpg?cache)'));
        $this->assertSame('<p><img src="http://testing.dev/item2/item2-2/missing-image.jpg" alt="" /></p>',
            $this->parsedown->text('![](missing-image.jpg)'));
        $this->assertSame('<p><img src="http://testing.dev/home-missing-image.jpg" alt="" /></p>',
            $this->parsedown->text('![](/home-missing-image.jpg)'));
    }

    public function testImagesSubDirAbsoluteUrls()
    {
        $this->config->set('system.absolute_urls', true);
        $this->uri->initializeWithUrlAndRootPath('http://testing.dev/subdir/item2/item2-2', '/subdir')->init();

        $this->assertSame('<p><img alt="" src="http://testing.dev/subdir/tests/fake/nested-site/user/pages/02.item2/02.item2-2/sample-image.jpg" /></p>',
            $this->parsedown->text('![](sample-image.jpg)'));
        $this->assertRegexp('|<p><img alt="" src="http:\/\/testing.dev\/subdir\/images\/.*-cache-image.jpe?g" \/><\/p>|',
            $this->parsedown->text('![](cache-image.jpg?cache)'));
        $this->assertRegexp('|<p><img alt="" src="http:\/\/testing.dev\/subdir\/images\/.*-home-cache-image.jpe?g" \/><\/p>|',
            $this->parsedown->text('![](/home-cache-image.jpg?cropResize=200,200)'));
        $this->assertSame('<p><img src="http://testing.dev/subdir/item2/item2-2/missing-image.jpg" alt="" /></p>',
            $this->parsedown->text('![](missing-image.jpg)'));
        $this->assertSame('<p><img src="http://testing.dev/subdir/home-missing-image.jpg" alt="" /></p>',
            $this->parsedown->text('![](/home-missing-image.jpg)'));
    }

    public function testImagesAttributes()
    {
        $this->uri->initializeWithURL('http://testing.dev/item2/item2-2')->init();

        $this->assertSame('<p><img title="My Title" alt="" src="/tests/fake/nested-site/user/pages/02.item2/02.item2-2/sample-image.jpg" /></p>',
            $this->parsedown->text('![](sample-image.jpg "My Title")'));
        $this->assertSame('<p><img alt="" class="foo" src="/tests/fake/nested-site/user/pages/02.item2/02.item2-2/sample-image.jpg" /></p>',
            $this->parsedown->text('![](sample-image.jpg?classes=foo)'));
        $this->assertSame('<p><img alt="" class="foo bar" src="/tests/fake/nested-site/user/pages/02.item2/02.item2-2/sample-image.jpg" /></p>',
            $this->parsedown->text('![](sample-image.jpg?classes=foo,bar)'));
        $this->assertSame('<p><img alt="" id="foo" src="/tests/fake/nested-site/user/pages/02.item2/02.item2-2/sample-image.jpg" /></p>',
            $this->parsedown->text('![](sample-image.jpg?id=foo)'));
        $this->assertSame('<p><img alt="Alt Text" id="foo" src="/tests/fake/nested-site/user/pages/02.item2/02.item2-2/sample-image.jpg" /></p>',
            $this->parsedown->text('![Alt Text](sample-image.jpg?id=foo)'));
        $this->assertSame('<p><img alt="Alt Text" class="bar" id="foo" src="/tests/fake/nested-site/user/pages/02.item2/02.item2-2/sample-image.jpg" /></p>',
            $this->parsedown->text('![Alt Text](sample-image.jpg?class=bar&id=foo)'));
        $this->assertSame('<p><img title="My Title" alt="Alt Text" class="bar" id="foo" src="/tests/fake/nested-site/user/pages/02.item2/02.item2-2/sample-image.jpg" /></p>',
            $this->parsedown->text('![Alt Text](sample-image.jpg?class=bar&id=foo "My Title")'));
    }


    public function testRootImages()
    {
        $this->uri->initializeWithURL('http://testing.dev/')->init();

        $defaults = [
            'markdown' => [
                'extra'            => false,
                'auto_line_breaks' => false,
                'auto_url_links'   => false,
                'escape_markup'    => false,
                'special_chars'    => ['>' => 'gt', '<' => 'lt'],
            ],
            'images' => $this->config->get('system.images', [])
        ];
        $page = $this->pages->find('/');
        $excerpts = new Excerpts($page, $defaults);
        $this->parsedown = new Parsedown($excerpts);

        $this->assertSame('<p><img alt="" src="/tests/fake/nested-site/user/pages/01.item1/home-sample-image.jpg" /></p>',
            $this->parsedown->text('![](home-sample-image.jpg)'));
        $this->assertRegexp('|<p><img alt="" src="\/images\/.*-home-cache-image.jpe?g" \/><\/p>|',
            $this->parsedown->text('![](home-cache-image.jpg?cache)'));
        $this->assertRegexp('|<p><img alt="" src="\/images\/.*-home-cache-image.jpe?g\?foo=1" \/><\/p>|',
            $this->parsedown->text('![](home-cache-image.jpg?cropResize=200,200&foo)'));
        $this->assertSame('<p><img src="/home-missing-image.jpg" alt="" /></p>',
            $this->parsedown->text('![](/home-missing-image.jpg)'));

        $this->config->set('system.languages.supported', ['fr','en']);
        unset($this->grav['language']);
        $this->grav['language'] = new Language($this->grav);
        $this->uri->initializeWithURL('http://testing.dev/fr/item2/item2-2')->init();

        $this->assertSame('<p><img alt="" src="/tests/fake/nested-site/user/pages/01.item1/home-sample-image.jpg" /></p>',
            $this->parsedown->text('![](home-sample-image.jpg)'));


    }

    public function testRootImagesSubDirAbsoluteUrls()
    {
        $this->config->set('system.absolute_urls', true);
        $this->uri->initializeWithUrlAndRootPath('http://testing.dev/subdir/item2/item2-2', '/subdir')->init();

        $this->assertSame('<p><img alt="" src="http://testing.dev/subdir/tests/fake/nested-site/user/pages/02.item2/02.item2-2/sample-image.jpg" /></p>',
            $this->parsedown->text('![](sample-image.jpg)'));
        $this->assertRegexp('|<p><img alt="" src="http:\/\/testing.dev\/subdir\/images\/.*-cache-image.jpe?g" \/><\/p>|',
            $this->parsedown->text('![](cache-image.jpg?cache)'));
        $this->assertRegexp('|<p><img alt="" src="http:\/\/testing.dev\/subdir\/images\/.*-home-cache-image.jpe?g" \/><\/p>|',
            $this->parsedown->text('![](/home-cache-image.jpg?cropResize=200,200)'));
        $this->assertSame('<p><img src="http://testing.dev/subdir/item2/item2-2/missing-image.jpg" alt="" /></p>',
            $this->parsedown->text('![](missing-image.jpg)'));
        $this->assertSame('<p><img src="http://testing.dev/subdir/home-missing-image.jpg" alt="" /></p>',
            $this->parsedown->text('![](/home-missing-image.jpg)'));
    }

    public function testRootAbsoluteLinks()
    {
        $this->uri->initializeWithURL('http://testing.dev/')->init();

        $defaults = [
            'markdown' => [
                'extra'            => false,
                'auto_line_breaks' => false,
                'auto_url_links'   => false,
                'escape_markup'    => false,
                'special_chars'    => ['>' => 'gt', '<' => 'lt'],
            ],
            'images' => $this->config->get('system.images', [])
        ];
        $page = $this->pages->find('/');
        $excerpts = new Excerpts($page, $defaults);
        $this->parsedown = new Parsedown($excerpts);

        $this->assertSame('<p><a href="/item1/item1-3">Down a Level</a></p>',
            $this->parsedown->text('[Down a Level](item1-3)'));

        $this->assertSame('<p><a href="/item2">Peer Page</a></p>',
            $this->parsedown->text('[Peer Page](../item2)'));

        $this->assertSame('<p><a href="/?foo=bar">With Query</a></p>',
            $this->parsedown->text('[With Query](?foo=bar)'));
        $this->assertSame('<p><a href="/foo:bar">With Param</a></p>',
            $this->parsedown->text('[With Param](/foo:bar)'));
        $this->assertSame('<p><a href="#foo">With Anchor</a></p>',
            $this->parsedown->text('[With Anchor](#foo)'));

        $this->config->set('system.languages.supported', ['fr','en']);
        unset($this->grav['language']);
        $this->grav['language'] = new Language($this->grav);
        $this->uri->initializeWithURL('http://testing.dev/fr/item2/item2-2')->init();

        $this->assertSame('<p><a href="/fr/item2">Peer Page</a></p>',
            $this->parsedown->text('[Peer Page](../item2)'));
        $this->assertSame('<p><a href="/fr/item1/item1-3">Down a Level</a></p>',
            $this->parsedown->text('[Down a Level](item1-3)'));
        $this->assertSame('<p><a href="/fr/?foo=bar">With Query</a></p>',
            $this->parsedown->text('[With Query](?foo=bar)'));
        $this->assertSame('<p><a href="/fr/foo:bar">With Param</a></p>',
            $this->parsedown->text('[With Param](/foo:bar)'));
        $this->assertSame('<p><a href="#foo">With Anchor</a></p>',
            $this->parsedown->text('[With Anchor](#foo)'));
    }


    public function testAnchorLinksLangRelativeUrls()
    {
        $this->config->set('system.languages.supported', ['fr','en']);
        unset($this->grav['language']);
        $this->grav['language'] = new Language($this->grav);
        $this->uri->initializeWithURL('http://testing.dev/fr/item2/item2-2')->init();

        $this->assertSame('<p><a href="#foo">Current Anchor</a></p>',
            $this->parsedown->text('[Current Anchor](#foo)'));
        $this->assertSame('<p><a href="/fr/#foo">Root Anchor</a></p>',
            $this->parsedown->text('[Root Anchor](/#foo)'));
        $this->assertSame('<p><a href="/fr/item2/item2-1#foo">Peer Anchor</a></p>',
            $this->parsedown->text('[Peer Anchor](../item2-1#foo)'));
        $this->assertSame('<p><a href="/fr/item2/item2-1#foo">Peer Anchor 2</a></p>',
            $this->parsedown->text('[Peer Anchor 2](../item2-1/#foo)'));

    }

    public function testAnchorLinksLangAbsoluteUrls()
    {
        $this->config->set('system.absolute_urls', true);
        $this->config->set('system.languages.supported', ['fr','en']);
        unset($this->grav['language']);
        $this->grav['language'] = new Language($this->grav);
        $this->uri->initializeWithURL('http://testing.dev/fr/item2/item2-2')->init();

        $this->assertSame('<p><a href="#foo">Current Anchor</a></p>',
            $this->parsedown->text('[Current Anchor](#foo)'));
        $this->assertSame('<p><a href="http://testing.dev/fr/item2/item2-1#foo">Peer Anchor</a></p>',
            $this->parsedown->text('[Peer Anchor](../item2-1#foo)'));
        $this->assertSame('<p><a href="http://testing.dev/fr/item2/item2-1#foo">Peer Anchor 2</a></p>',
            $this->parsedown->text('[Peer Anchor 2](../item2-1/#foo)'));
        $this->assertSame('<p><a href="http://testing.dev/fr/#foo">Root Anchor</a></p>',
            $this->parsedown->text('[Root Anchor](/#foo)'));

    }


    public function testExternalLinks()
    {
        $this->assertSame('<p><a href="http://www.cnn.com">cnn.com</a></p>',
            $this->parsedown->text('[cnn.com](http://www.cnn.com)'));
        $this->assertSame('<p><a href="https://www.google.com">google.com</a></p>',
            $this->parsedown->text('[google.com](https://www.google.com)'));
        $this->assertSame('<p><a href="https://github.com/getgrav/grav/issues/new?title=%5Badd-resource%5D%20New%20Plugin%2FTheme&body=Hello%20%2A%2AThere%2A%2A">complex url</a></p>',
            $this->parsedown->text('[complex url](https://github.com/getgrav/grav/issues/new?title=[add-resource]%20New%20Plugin/Theme&body=Hello%20**There**)'));
    }

    public function testExternalLinksSubDir()
    {
        $this->uri->initializeWithUrlAndRootPath('http://testing.dev/subdir/item2/item2-2', '/subdir')->init();

        $this->assertSame('<p><a href="http://www.cnn.com">cnn.com</a></p>',
            $this->parsedown->text('[cnn.com](http://www.cnn.com)'));
        $this->assertSame('<p><a href="https://www.google.com">google.com</a></p>',
            $this->parsedown->text('[google.com](https://www.google.com)'));
    }

    public function testExternalLinksSubDirAbsoluteUrls()
    {
        $this->config->set('system.absolute_urls', true);
        $this->uri->initializeWithUrlAndRootPath('http://testing.dev/subdir/item2/item2-2', '/subdir')->init();

        $this->assertSame('<p><a href="http://www.cnn.com">cnn.com</a></p>',
            $this->parsedown->text('[cnn.com](http://www.cnn.com)'));
        $this->assertSame('<p><a href="https://www.google.com">google.com</a></p>',
            $this->parsedown->text('[google.com](https://www.google.com)'));
    }

    public function testAnchorLinksRelativeUrls()
    {
        $this->uri->initializeWithURL('http://testing.dev/item2/item2-2')->init();

        $this->assertSame('<p><a href="#foo">Current Anchor</a></p>',
            $this->parsedown->text('[Current Anchor](#foo)'));
        $this->assertSame('<p><a href="/#foo">Root Anchor</a></p>',
            $this->parsedown->text('[Root Anchor](/#foo)'));
        $this->assertSame('<p><a href="/item2/item2-1#foo">Peer Anchor</a></p>',
            $this->parsedown->text('[Peer Anchor](../item2-1#foo)'));
        $this->assertSame('<p><a href="/item2/item2-1#foo">Peer Anchor 2</a></p>',
            $this->parsedown->text('[Peer Anchor 2](../item2-1/#foo)'));
    }

    public function testAnchorLinksAbsoluteUrls()
    {
        $this->config->set('system.absolute_urls', true);
        $this->uri->initializeWithURL('http://testing.dev/item2/item2-2')->init();

        $this->assertSame('<p><a href="#foo">Current Anchor</a></p>',
            $this->parsedown->text('[Current Anchor](#foo)'));
        $this->assertSame('<p><a href="http://testing.dev/item2/item2-1#foo">Peer Anchor</a></p>',
            $this->parsedown->text('[Peer Anchor](../item2-1#foo)'));
        $this->assertSame('<p><a href="http://testing.dev/item2/item2-1#foo">Peer Anchor 2</a></p>',
            $this->parsedown->text('[Peer Anchor 2](../item2-1/#foo)'));
        $this->assertSame('<p><a href="http://testing.dev/#foo">Root Anchor</a></p>',
            $this->parsedown->text('[Root Anchor](/#foo)'));
    }

    public function testAnchorLinksWithPortAbsoluteUrls()
    {
        $this->config->set('system.absolute_urls', true);
        $this->uri->initializeWithURL('http://testing.dev:8080/item2/item2-2')->init();

        $this->assertSame('<p><a href="http://testing.dev:8080/item2/item2-1#foo">Peer Anchor</a></p>',
            $this->parsedown->text('[Peer Anchor](../item2-1#foo)'));
        $this->assertSame('<p><a href="http://testing.dev:8080/item2/item2-1#foo">Peer Anchor 2</a></p>',
            $this->parsedown->text('[Peer Anchor 2](../item2-1/#foo)'));
        $this->assertSame('<p><a href="#foo">Current Anchor</a></p>',
            $this->parsedown->text('[Current Anchor](#foo)'));
        $this->assertSame('<p><a href="http://testing.dev:8080/#foo">Root Anchor</a></p>',
            $this->parsedown->text('[Root Anchor](/#foo)'));
    }

    public function testAnchorLinksSubDirRelativeUrls()
    {
        $this->uri->initializeWithUrlAndRootPath('http://testing.dev/subdir/item2/item2-2', '/subdir')->init();

        $this->assertSame('<p><a href="/subdir/item2/item2-1#foo">Peer Anchor</a></p>',
            $this->parsedown->text('[Peer Anchor](../item2-1#foo)'));
        $this->assertSame('<p><a href="/subdir/item2/item2-1#foo">Peer Anchor 2</a></p>',
            $this->parsedown->text('[Peer Anchor 2](../item2-1/#foo)'));
        $this->assertSame('<p><a href="#foo">Current Anchor</a></p>',
            $this->parsedown->text('[Current Anchor](#foo)'));
        $this->assertSame('<p><a href="/subdir/#foo">Root Anchor</a></p>',
            $this->parsedown->text('[Root Anchor](/#foo)'));
    }

    public function testAnchorLinksSubDirAbsoluteUrls()
    {
        $this->config->set('system.absolute_urls', true);
        $this->uri->initializeWithUrlAndRootPath('http://testing.dev/subdir/item2/item2-2', '/subdir')->init();

        $this->assertSame('<p><a href="http://testing.dev/subdir/item2/item2-1#foo">Peer Anchor</a></p>',
            $this->parsedown->text('[Peer Anchor](../item2-1#foo)'));
        $this->assertSame('<p><a href="http://testing.dev/subdir/item2/item2-1#foo">Peer Anchor 2</a></p>',
            $this->parsedown->text('[Peer Anchor 2](../item2-1/#foo)'));
        $this->assertSame('<p><a href="#foo">Current Anchor</a></p>',
            $this->parsedown->text('[Current Anchor](#foo)'));
        $this->assertSame('<p><a href="http://testing.dev/subdir/#foo">Root Anchor</a></p>',
            $this->parsedown->text('[Root Anchor](/#foo)'));
    }

    public function testSlugRelativeLinks()
    {
        $this->uri->initializeWithURL('http://testing.dev/item2/item2-2')->init();

        $this->assertSame('<p><a href="/">Up to Root Level</a></p>',
            $this->parsedown->text('[Up to Root Level](../..)'));
        $this->assertSame('<p><a href="/item2/item2-1">Peer Page</a></p>',
            $this->parsedown->text('[Peer Page](../item2-1)'));
        $this->assertSame('<p><a href="/item2/item2-2/item2-2-1">Down a Level</a></p>',
            $this->parsedown->text('[Down a Level](item2-2-1)'));
        $this->assertSame('<p><a href="/item2">Up a Level</a></p>',
            $this->parsedown->text('[Up a Level](..)'));
        $this->assertSame('<p><a href="/item3/item3-3">Up and Down</a></p>',
            $this->parsedown->text('[Up and Down](../../item3/item3-3)'));
        $this->assertSame('<p><a href="/item2/item2-2/item2-2-1?foo=bar">Down a Level with Query</a></p>',
            $this->parsedown->text('[Down a Level with Query](item2-2-1?foo=bar)'));
        $this->assertSame('<p><a href="/item2?foo=bar">Up a Level with Query</a></p>',
            $this->parsedown->text('[Up a Level with Query](../?foo=bar)'));
        $this->assertSame('<p><a href="/item3/item3-3?foo=bar">Up and Down with Query</a></p>',
            $this->parsedown->text('[Up and Down with Query](../../item3/item3-3?foo=bar)'));
        $this->assertSame('<p><a href="/item3/item3-3/foo:bar">Up and Down with Param</a></p>',
            $this->parsedown->text('[Up and Down with Param](../../item3/item3-3/foo:bar)'));
        $this->assertSame('<p><a href="/item3/item3-3#foo">Up and Down with Anchor</a></p>',
            $this->parsedown->text('[Up and Down with Anchor](../../item3/item3-3#foo)'));
    }

    public function testSlugRelativeLinksAbsoluteUrls()
    {
        $this->config->set('system.absolute_urls', true);
        $this->uri->initializeWithURL('http://testing.dev/item2/item2-2')->init();

        $this->assertSame('<p><a href="http://testing.dev/item2/item2-1">Peer Page</a></p>',
            $this->parsedown->text('[Peer Page](../item2-1)'));
        $this->assertSame('<p><a href="http://testing.dev/item2/item2-2/item2-2-1">Down a Level</a></p>',
            $this->parsedown->text('[Down a Level](item2-2-1)'));
        $this->assertSame('<p><a href="http://testing.dev/item2">Up a Level</a></p>',
            $this->parsedown->text('[Up a Level](..)'));
        $this->assertSame('<p><a href="http://testing.dev/">Up to Root Level</a></p>',
            $this->parsedown->text('[Up to Root Level](../..)'));
        $this->assertSame('<p><a href="http://testing.dev/item3/item3-3">Up and Down</a></p>',
            $this->parsedown->text('[Up and Down](../../item3/item3-3)'));
        $this->assertSame('<p><a href="http://testing.dev/item2/item2-2/item2-2-1?foo=bar">Down a Level with Query</a></p>',
            $this->parsedown->text('[Down a Level with Query](item2-2-1?foo=bar)'));
        $this->assertSame('<p><a href="http://testing.dev/item2?foo=bar">Up a Level with Query</a></p>',
            $this->parsedown->text('[Up a Level with Query](../?foo=bar)'));
        $this->assertSame('<p><a href="http://testing.dev/item3/item3-3?foo=bar">Up and Down with Query</a></p>',
            $this->parsedown->text('[Up and Down with Query](../../item3/item3-3?foo=bar)'));
        $this->assertSame('<p><a href="http://testing.dev/item3/item3-3/foo:bar">Up and Down with Param</a></p>',
            $this->parsedown->text('[Up and Down with Param](../../item3/item3-3/foo:bar)'));
        $this->assertSame('<p><a href="http://testing.dev/item3/item3-3#foo">Up and Down with Anchor</a></p>',
            $this->parsedown->text('[Up and Down with Anchor](../../item3/item3-3#foo)'));
    }

    public function testSlugRelativeLinksSubDir()
    {
        $this->uri->initializeWithUrlAndRootPath('http://testing.dev/subdir/item2/item2-2', '/subdir')->init();

        $this->assertSame('<p><a href="/subdir/item2/item2-1">Peer Page</a></p>',
            $this->parsedown->text('[Peer Page](../item2-1)'));
        $this->assertSame('<p><a href="/subdir/item2/item2-2/item2-2-1">Down a Level</a></p>',
            $this->parsedown->text('[Down a Level](item2-2-1)'));
        $this->assertSame('<p><a href="/subdir/item2">Up a Level</a></p>',
            $this->parsedown->text('[Up a Level](..)'));
        $this->assertSame('<p><a href="/subdir">Up to Root Level</a></p>',
            $this->parsedown->text('[Up to Root Level](../..)'));
        $this->assertSame('<p><a href="/subdir/item3/item3-3">Up and Down</a></p>',
            $this->parsedown->text('[Up and Down](../../item3/item3-3)'));
        $this->assertSame('<p><a href="/subdir/item2/item2-2/item2-2-1?foo=bar">Down a Level with Query</a></p>',
            $this->parsedown->text('[Down a Level with Query](item2-2-1?foo=bar)'));
        $this->assertSame('<p><a href="/subdir/item2?foo=bar">Up a Level with Query</a></p>',
            $this->parsedown->text('[Up a Level with Query](../?foo=bar)'));
        $this->assertSame('<p><a href="/subdir/item3/item3-3?foo=bar">Up and Down with Query</a></p>',
            $this->parsedown->text('[Up and Down with Query](../../item3/item3-3?foo=bar)'));
        $this->assertSame('<p><a href="/subdir/item3/item3-3/foo:bar">Up and Down with Param</a></p>',
            $this->parsedown->text('[Up and Down with Param](../../item3/item3-3/foo:bar)'));
        $this->assertSame('<p><a href="/subdir/item3/item3-3#foo">Up and Down with Anchor</a></p>',
            $this->parsedown->text('[Up and Down with Anchor](../../item3/item3-3#foo)'));
    }

    public function testSlugRelativeLinksSubDirAbsoluteUrls()
    {
        $this->config->set('system.absolute_urls', true);
        $this->uri->initializeWithUrlAndRootPath('http://testing.dev/subdir/item2/item2-2', '/subdir')->init();

        $this->assertSame('<p><a href="http://testing.dev/subdir/item2/item2-1">Peer Page</a></p>',
            $this->parsedown->text('[Peer Page](../item2-1)'));
        $this->assertSame('<p><a href="http://testing.dev/subdir/item2/item2-2/item2-2-1">Down a Level</a></p>',
            $this->parsedown->text('[Down a Level](item2-2-1)'));
        $this->assertSame('<p><a href="http://testing.dev/subdir/item2">Up a Level</a></p>',
            $this->parsedown->text('[Up a Level](..)'));
        $this->assertSame('<p><a href="http://testing.dev/subdir">Up to Root Level</a></p>',
            $this->parsedown->text('[Up to Root Level](../..)'));
        $this->assertSame('<p><a href="http://testing.dev/subdir/item3/item3-3">Up and Down</a></p>',
            $this->parsedown->text('[Up and Down](../../item3/item3-3)'));
        $this->assertSame('<p><a href="http://testing.dev/subdir/item2/item2-2/item2-2-1?foo=bar">Down a Level with Query</a></p>',
            $this->parsedown->text('[Down a Level with Query](item2-2-1?foo=bar)'));
        $this->assertSame('<p><a href="http://testing.dev/subdir/item2?foo=bar">Up a Level with Query</a></p>',
            $this->parsedown->text('[Up a Level with Query](../?foo=bar)'));
        $this->assertSame('<p><a href="http://testing.dev/subdir/item3/item3-3?foo=bar">Up and Down with Query</a></p>',
            $this->parsedown->text('[Up and Down with Query](../../item3/item3-3?foo=bar)'));
        $this->assertSame('<p><a href="http://testing.dev/subdir/item3/item3-3/foo:bar">Up and Down with Param</a></p>',
            $this->parsedown->text('[Up and Down with Param](../../item3/item3-3/foo:bar)'));
        $this->assertSame('<p><a href="http://testing.dev/subdir/item3/item3-3#foo">Up and Down with Anchor</a></p>',
            $this->parsedown->text('[Up and Down with Anchor](../../item3/item3-3#foo)'));
    }


    public function testDirectoryRelativeLinks()
    {
        $this->uri->initializeWithURL('http://testing.dev/item2/item2-2')->init();

        $this->assertSame('<p><a href="/item3/item3-3/foo:bar">Up and Down with Param</a></p>',
            $this->parsedown->text('[Up and Down with Param](../../03.item3/03.item3-3/foo:bar)'));
        $this->assertSame('<p><a href="/item2/item2-1">Peer Page</a></p>',
            $this->parsedown->text('[Peer Page](../01.item2-1)'));
        $this->assertSame('<p><a href="/item2/item2-2/item2-2-1">Down a Level</a></p>',
            $this->parsedown->text('[Down a Level](01.item2-2-1)'));
        $this->assertSame('<p><a href="/item3/item3-3">Up and Down</a></p>',
            $this->parsedown->text('[Up and Down](../../03.item3/03.item3-3)'));
        $this->assertSame('<p><a href="/item2/item2-2/item2-2-1?foo=bar">Down a Level with Query</a></p>',
            $this->parsedown->text('[Down a Level with Query](01.item2-2-1?foo=bar)'));
        $this->assertSame('<p><a href="/item3/item3-3?foo=bar">Up and Down with Query</a></p>',
            $this->parsedown->text('[Up and Down with Query](../../03.item3/03.item3-3?foo=bar)'));
        $this->assertSame('<p><a href="/item3/item3-3#foo">Up and Down with Anchor</a></p>',
            $this->parsedown->text('[Up and Down with Anchor](../../03.item3/03.item3-3#foo)'));
    }


    public function testAbsoluteLinks()
    {
        $this->uri->initializeWithURL('http://testing.dev/item2/item2-2')->init();

        $this->assertSame('<p><a href="/">Root</a></p>',
            $this->parsedown->text('[Root](/)'));
        $this->assertSame('<p><a href="/item2/item2-1">Peer Page</a></p>',
            $this->parsedown->text('[Peer Page](/item2/item2-1)'));
        $this->assertSame('<p><a href="/item2/item2-2/item2-2-1">Down a Level</a></p>',
            $this->parsedown->text('[Down a Level](/item2/item2-2/item2-2-1)'));
        $this->assertSame('<p><a href="/item2">Up a Level</a></p>',
            $this->parsedown->text('[Up a Level](/item2)'));
        $this->assertSame('<p><a href="/item2?foo=bar">With Query</a></p>',
            $this->parsedown->text('[With Query](/item2?foo=bar)'));
        $this->assertSame('<p><a href="/item2/foo:bar">With Param</a></p>',
            $this->parsedown->text('[With Param](/item2/foo:bar)'));
        $this->assertSame('<p><a href="/item2#foo">With Anchor</a></p>',
            $this->parsedown->text('[With Anchor](/item2#foo)'));
    }

    public function testDirectoryAbsoluteLinksSubDir()
    {
        $this->uri->initializeWithUrlAndRootPath('http://testing.dev/subdir/item2/item2-2', '/subdir')->init();

        $this->assertSame('<p><a href="/subdir/">Root</a></p>',
            $this->parsedown->text('[Root](/)'));
        $this->assertSame('<p><a href="/subdir/item2/item2-1">Peer Page</a></p>',
            $this->parsedown->text('[Peer Page](/item2/item2-1)'));
        $this->assertSame('<p><a href="/subdir/item2/item2-2/item2-2-1">Down a Level</a></p>',
            $this->parsedown->text('[Down a Level](/item2/item2-2/item2-2-1)'));
        $this->assertSame('<p><a href="/subdir/item2">Up a Level</a></p>',
            $this->parsedown->text('[Up a Level](/item2)'));
        $this->assertSame('<p><a href="/subdir/item2?foo=bar">With Query</a></p>',
            $this->parsedown->text('[With Query](/item2?foo=bar)'));
        $this->assertSame('<p><a href="/subdir/item2/foo:bar">With Param</a></p>',
            $this->parsedown->text('[With Param](/item2/foo:bar)'));
        $this->assertSame('<p><a href="/subdir/item2#foo">With Anchor</a></p>',
            $this->parsedown->text('[With Anchor](/item2#foo)'));
    }

    public function testDirectoryAbsoluteLinksSubDirAbsoluteUrl()
    {
        $this->config->set('system.absolute_urls', true);
        $this->uri->initializeWithUrlAndRootPath('http://testing.dev/subdir/item2/item2-2', '/subdir')->init();

        $this->assertSame('<p><a href="http://testing.dev/subdir/">Root</a></p>',
            $this->parsedown->text('[Root](/)'));
        $this->assertSame('<p><a href="http://testing.dev/subdir/item2/item2-1">Peer Page</a></p>',
            $this->parsedown->text('[Peer Page](/item2/item2-1)'));
        $this->assertSame('<p><a href="http://testing.dev/subdir/item2/item2-2/item2-2-1">Down a Level</a></p>',
            $this->parsedown->text('[Down a Level](/item2/item2-2/item2-2-1)'));
        $this->assertSame('<p><a href="http://testing.dev/subdir/item2">Up a Level</a></p>',
            $this->parsedown->text('[Up a Level](/item2)'));
        $this->assertSame('<p><a href="http://testing.dev/subdir/item2?foo=bar">With Query</a></p>',
            $this->parsedown->text('[With Query](/item2?foo=bar)'));
        $this->assertSame('<p><a href="http://testing.dev/subdir/item2/foo:bar">With Param</a></p>',
            $this->parsedown->text('[With Param](/item2/foo:bar)'));
        $this->assertSame('<p><a href="http://testing.dev/subdir/item2#foo">With Anchor</a></p>',
            $this->parsedown->text('[With Anchor](/item2#foo)'));
    }

    public function testSpecialProtocols()
    {
        $this->uri->initializeWithURL('http://testing.dev/item2/item2-2')->init();

        $this->assertSame('<p><a href="mailto:user@domain.com">mailto</a></p>',
            $this->parsedown->text('[mailto](mailto:user@domain.com)'));
        $this->assertSame('<p><a href="xmpp:xyx@domain.com">xmpp</a></p>',
            $this->parsedown->text('[xmpp](xmpp:xyx@domain.com)'));
        $this->assertSame('<p><a href="tel:123-555-12345">tel</a></p>',
            $this->parsedown->text('[tel](tel:123-555-12345)'));
        $this->assertSame('<p><a href="sms:123-555-12345">sms</a></p>',
            $this->parsedown->text('[sms](sms:123-555-12345)'));
        $this->assertSame('<p><a href="rdp://ts.example.com">ts.example.com</a></p>',
            $this->parsedown->text('[ts.example.com](rdp://ts.example.com)'));
    }

    public function testSpecialProtocolsSubDir()
    {
        $this->uri->initializeWithUrlAndRootPath('http://testing.dev/subdir/item2/item2-2', '/subdir')->init();

        $this->assertSame('<p><a href="mailto:user@domain.com">mailto</a></p>',
            $this->parsedown->text('[mailto](mailto:user@domain.com)'));
        $this->assertSame('<p><a href="xmpp:xyx@domain.com">xmpp</a></p>',
            $this->parsedown->text('[xmpp](xmpp:xyx@domain.com)'));
        $this->assertSame('<p><a href="tel:123-555-12345">tel</a></p>',
            $this->parsedown->text('[tel](tel:123-555-12345)'));
        $this->assertSame('<p><a href="sms:123-555-12345">sms</a></p>',
            $this->parsedown->text('[sms](sms:123-555-12345)'));
        $this->assertSame('<p><a href="rdp://ts.example.com">ts.example.com</a></p>',
            $this->parsedown->text('[ts.example.com](rdp://ts.example.com)'));
    }

    public function testSpecialProtocolsSubDirAbsoluteUrl()
    {
        $this->config->set('system.absolute_urls', true);
        $this->uri->initializeWithUrlAndRootPath('http://testing.dev/subdir/item2/item2-2', '/subdir')->init();

        $this->assertSame('<p><a href="mailto:user@domain.com">mailto</a></p>',
            $this->parsedown->text('[mailto](mailto:user@domain.com)'));
        $this->assertSame('<p><a href="xmpp:xyx@domain.com">xmpp</a></p>',
            $this->parsedown->text('[xmpp](xmpp:xyx@domain.com)'));
        $this->assertSame('<p><a href="tel:123-555-12345">tel</a></p>',
            $this->parsedown->text('[tel](tel:123-555-12345)'));
        $this->assertSame('<p><a href="sms:123-555-12345">sms</a></p>',
            $this->parsedown->text('[sms](sms:123-555-12345)'));
        $this->assertSame('<p><a href="rdp://ts.example.com">ts.example.com</a></p>',
            $this->parsedown->text('[ts.example.com](rdp://ts.example.com)'));
    }

    public function testReferenceLinks()
    {
        $this->uri->initializeWithURL('http://testing.dev/item2/item2-2')->init();

        $sample = '[relative link][r_relative]
                   [r_relative]: ../item2-3#blah';
        $this->assertSame('<p><a href="/item2/item2-3#blah">relative link</a></p>',
            $this->parsedown->text($sample));

        $sample = '[absolute link][r_absolute]
                   [r_absolute]: /item3#blah';
        $this->assertSame('<p><a href="/item3#blah">absolute link</a></p>',
            $this->parsedown->text($sample));

        $sample = '[external link][r_external]
                   [r_external]: http://www.cnn.com';
        $this->assertSame('<p><a href="http://www.cnn.com">external link</a></p>',
            $this->parsedown->text($sample));
    }

    public function testAttributeLinks()
    {
        $this->uri->initializeWithURL('http://testing.dev/item2/item2-2')->init();

        $this->assertSame('<p><a href="#something" class="button">Anchor Class</a></p>',
            $this->parsedown->text('[Anchor Class](?classes=button#something)'));
        $this->assertSame('<p><a href="/item2/item2-3" class="button">Relative Class</a></p>',
            $this->parsedown->text('[Relative Class](../item2-3?classes=button)'));
        $this->assertSame('<p><a href="/item2/item2-3" id="unique">Relative ID</a></p>',
            $this->parsedown->text('[Relative ID](../item2-3?id=unique)'));
        $this->assertSame('<p><a href="https://github.com/getgrav/grav" class="button big">External</a></p>',
            $this->parsedown->text('[External](https://github.com/getgrav/grav?classes=button,big)'));
        $this->assertSame('<p><a href="/item2/item2-3?id=unique">Relative Noprocess</a></p>',
            $this->parsedown->text('[Relative Noprocess](../item2-3?id=unique&noprocess)'));
        $this->assertSame('<p><a href="/item2/item2-3" target="_blank">Relative Target</a></p>',
            $this->parsedown->text('[Relative Target](../item2-3?target=_blank)'));
        $this->assertSame('<p><a href="/item2/item2-3" rel="nofollow">Relative Rel</a></p>',
            $this->parsedown->text('[Relative Rel](../item2-3?rel=nofollow)'));
        $this->assertSame('<p><a href="/item2/item2-3?foo=bar&baz=qux" rel="nofollow" class="button">Relative Mixed</a></p>',
            $this->parsedown->text('[Relative Mixed](../item2-3?foo=bar&baz=qux&rel=nofollow&class=button)'));
    }

    public function testInvalidLinks()
    {
        $this->uri->initializeWithURL('http://testing.dev/item2/item2-2')->init();

        $this->assertSame('<p><a href="/item2/item2-2/no-page">Non Existent Page</a></p>',
            $this->parsedown->text('[Non Existent Page](no-page)'));
        $this->assertSame('<p><a href="/item2/item2-2/existing-file.zip">Existent File</a></p>',
            $this->parsedown->text('[Existent File](existing-file.zip)'));
        $this->assertSame('<p><a href="/item2/item2-2/missing-file.zip">Non Existent File</a></p>',
            $this->parsedown->text('[Non Existent File](missing-file.zip)'));
    }

    public function testInvalidLinksSubDir()
    {
        $this->uri->initializeWithUrlAndRootPath('http://testing.dev/subdir/item2/item2-2', '/subdir')->init();

        $this->assertSame('<p><a href="/subdir/item2/item2-2/no-page">Non Existent Page</a></p>',
            $this->parsedown->text('[Non Existent Page](no-page)'));
        $this->assertSame('<p><a href="/subdir/item2/item2-2/existing-file.zip">Existent File</a></p>',
            $this->parsedown->text('[Existent File](existing-file.zip)'));
        $this->assertSame('<p><a href="/subdir/item2/item2-2/missing-file.zip">Non Existent File</a></p>',
            $this->parsedown->text('[Non Existent File](missing-file.zip)'));
    }

    public function testInvalidLinksSubDirAbsoluteUrl()
    {
        $this->config->set('system.absolute_urls', true);
        $this->uri->initializeWithUrlAndRootPath('http://testing.dev/subdir/item2/item2-2', '/subdir')->init();

        $this->assertSame('<p><a href="http://testing.dev/subdir/item2/item2-2/no-page">Non Existent Page</a></p>',
            $this->parsedown->text('[Non Existent Page](no-page)'));
        $this->assertSame('<p><a href="http://testing.dev/subdir/item2/item2-2/existing-file.zip">Existent File</a></p>',
            $this->parsedown->text('[Existent File](existing-file.zip)'));
        $this->assertSame('<p><a href="http://testing.dev/subdir/item2/item2-2/missing-file.zip">Non Existent File</a></p>',
            $this->parsedown->text('[Non Existent File](missing-file.zip)'));
    }


    /**
     * @param $string
     *
     * @return mixed
     */
    private function stripLeadingWhitespace($string)
    {
        return preg_replace('/^\s*(.*)/', '', $string);
    }

}
