<?php
/**
 * Nextcloud - News
 *
 * This file is licensed under the Affero General Public License version 3 or
 * later. See the COPYING file.
 *
 * @author    Alessandro Cosentino <cosenal@gmail.com>
 * @author    Bernhard Posselt <dev@bernhard-posselt.com>
 * @copyright 2012 Alessandro Cosentino
 * @copyright 2012-2014 Bernhard Posselt
 */

namespace OCA\News\Tests\Unit\Utility;

use \OCA\News\Db\Folder;
use \OCA\News\Db\Feed;
use OCA\News\Utility\OPMLExporter;
use PHPUnit\Framework\TestCase;


class OPMLExporterTest extends TestCase
{
    /** @var OPMLExporter */
    private $exporter;
    /** @var Feed */
    private $feed1;
    /** @var Feed */
    private $feed2;
    /** @var Folder */
    private $folder1;
    /** @var Folder */
    private $folder2;

    protected function setUp() 
    {
        $this->exporter = new OPMLExporter();
        $this->folder1 = new Folder();
        $this->folder1->setId(3);
        $this->folder1->setParentId(0);
        $this->folder1->setName('Örgendwas');
        $this->folder2 = new Folder();
        $this->folder2->setId(1);
        $this->folder2->setParentId(3);
        $this->folder2->setName('a ergendwas');
        $this->feed1 = new Feed();
        $this->feed1->setUrl('http://url1');
        $this->feed1->setTitle('tötel');
        $this->feed1->setFolderId(0);
        $this->feed2 = new Feed();
        $this->feed2->setUrl('http://url');
        $this->feed2->setTitle('ttel df');
        $this->feed2->setLink('goooooogel');
        $this->feed2->setFolderId(1);
    }


    private function getAttribute($item, $name) 
    {
        // used to fix scrutinizer errors
        if ($item instanceof \DOMElement) {
            return $item->getAttribute($name);
        } else {
            return null;
        }
    }


    public function testBuildEmpty()
    {
        $result = $this->exporter->build([], []);
        $xpath = new \DOMXpath($result);

        $this->assertEquals(0, $xpath->query('//outline')->length);
    }


    public function testBuildReturnsFolders() 
    {
        $result = $this->exporter->build([$this->folder1, $this->folder2], []);
        $xpath = new \DOMXpath($result);
        $elems = $xpath->query('/opml/body/outline');

        $this->assertEquals(2, $elems->length);
        $this->assertEquals(
            $this->folder1->getName(),
            $this->getAttribute($elems->item(0), 'title')
        );
        $this->assertEquals(
            $this->folder1->getName(),
            $this->getAttribute($elems->item(0), 'text')
        );
        $this->assertEquals(
            $this->folder2->getName(),
            $this->getAttribute($elems->item(1), 'title')
        );
        $this->assertEquals(
            $this->folder2->getName(),
            $this->getAttribute($elems->item(1), 'text')
        );
    }


    public function testBuildReturnsOnlyOneFeedIfParentFolderNotThere() 
    {
        $result = $this->exporter->build([], [$this->feed1, $this->feed2]);
        $xpath = new \DOMXpath($result);
        $elems = $xpath->query('//outline');

        $this->assertEquals(1, $elems->length);
        $this->assertEquals(
            $this->feed1->getTitle(),
            $this->getAttribute($elems->item(0), 'title')
        );
        $this->assertEquals(
            $this->feed1->getTitle(),
            $this->getAttribute($elems->item(0), 'text')
        );
        $this->assertEquals(
            $this->feed1->getUrl(),
            $this->getAttribute($elems->item(0), 'xmlUrl')
        );
        $this->assertEquals(
            '',
            $this->getAttribute($elems->item(0), 'htmlUrl')
        );
    }


    public function testBuildReturnsFeedsAndFolders() 
    {
        $result = $this->exporter->build(
            [$this->folder1, $this->folder2],
            [$this->feed1, $this->feed2]
        );
        $xpath = new \DOMXpath($result);
        $elems = $xpath->query('/opml/body/outline');

        $this->assertEquals(3, $elems->length);


        $this->assertEquals(
            $this->folder1->getName(),
            $this->getAttribute($elems->item(0), 'title')
        );
        $this->assertEquals(
            $this->folder2->getName(),
            $this->getAttribute($elems->item(1), 'text')
        );
        $this->assertEquals(
            $this->feed1->getUrl(),
            $this->getAttribute($elems->item(2), 'xmlUrl')
        );
        $this->assertEquals(
            $this->feed2->getLink(),
            $this->getAttribute($elems->item(1)->childNodes->item(0), 'htmlUrl')
        );
    }


}