<?php

namespace MediaWiki\Extension\DiscussionTools\Tests;

use MediaWiki\Extension\DiscussionTools\CommentItem;
use MediaWiki\Extension\DiscussionTools\HeadingItem;
use MediaWiki\Extension\DiscussionTools\ImmutableRange;
use MediaWiki\Extension\DiscussionTools\ThreadItem;

/**
 * @coversDefaultClass \MediaWiki\Extension\DiscussionTools\ThreadItem
 *
 * @group DiscussionTools
 */
class ThreadItemTest extends CommentTestCase {
	/**
	 * @dataProvider provideAuthors
	 * @covers ::getAuthorsBelow
	 */
	public function testGetAuthorsBelow( array $thread, array $expected ) : void {
		$doc = $this->createDocument( '' );
		$node = $doc->createElement( 'div' );
		$range = new ImmutableRange( $node, 0, $node, 0 );

		$makeThreadItem = function ( array $arr ) use ( &$makeThreadItem, $range ) : ThreadItem {
			if ( $arr['type'] === 'comment' ) {
				$item = new CommentItem( 1, $range );
				$item->setAuthor( $arr['author'] );
			} else {
				$item = new HeadingItem( $range );
			}
			foreach ( $arr['replies'] as $reply ) {
				$item->addReply( $makeThreadItem( $reply ) );
			}
			return $item;
		};

		$threadItem = $makeThreadItem( $thread );

		self::assertEquals( $expected, $threadItem->getAuthorsBelow() );
	}

	public function provideAuthors() : array {
		return self::getJson( '../cases/authors.json' );
	}

}