<?php // lint >= 99.9
// phpcs:ignoreFile
// phpcs:disable Generic.Files.LineLength.TooLong
/* REMOVE THIS COMMENT AFTER PORTING */
namespace Parsoid;

$ParsoidExtApi = $module->parent->parent->require( './extapi.js' )->versionCheck( '^0.10.0' );
$temp0 = $ParsoidExtApi;
$ContentUtils = $temp0::ContentUtils;
$DOMDataUtils = $temp0::DOMDataUtils;
$WTUtils = $temp0::WTUtils;
$Promise = $temp0::Promise;

/**
 * Simple token transform version of the Ref extension tag.
 *
 * @class
 */
class Ref {
	public static function toDOM( $state, $content, $args ) {
		// Drop nested refs entirely, unless we've explicitly allowed them
		if ( $state->parseContext->extTag === 'ref'
&& !( $state->parseContext->extTagOpts && $state->parseContext->extTagOpts->allowNestedRef )
		) {
			return null;
		}

		// The one supported case for nested refs is from the {{#tag:ref}} parser
		// function.  However, we're overly permissive here since we can't
		// distinguish when that's nested in another template.
		// The php preprocessor did our expansion.
		$allowNestedRef = $state->parseContext->inTemplate && $state->parseContext->extTag !== 'ref';

		return ParsoidExtApi::parseTokenContentsToDOM( $state, $args, '', $content, [
				// NOTE: sup's content model requires it only contain phrasing
				// content, not flow content. However, since we are building an
				// in-memory DOM which is simply a tree data structure, we can
				// nest flow content in a <sup> tag.
				'wrapperTag' => 'sup',
				'inTemplate' => $state->parseContext->inTemplate,
				'extTag' => 'ref',
				'extTagOpts' => [
					'allowNestedRef' => (bool)$allowNestedRef
				],
				// FIXME: One-off PHP parser state leak.
				// This needs a better solution.
				'inPHPBlock' => true
			]
		);
	}

	public static function lintHandler( $ref, $env, $tplInfo, $domLinter ) {
		// Don't lint the content of ref in ref, since it can lead to cycles
		// using named refs
		if ( WTUtils::fromExtensionContent( $ref, 'references' ) ) { return $ref->nextSibling;
  }

		$linkBackId = preg_replace( '/[^#]*#/', '', $ref->firstChild->getAttribute( 'href' ), 1 );
		$refNode = $ref->ownerDocument->getElementById( $linkBackId );
		if ( $refNode ) {
			// Ex: Buggy input wikitext without ref content
			$domLinter( $refNode->lastChild, $env, ( $tplInfo->isTemplated ) ? $tplInfo : null );
		}
		return $ref->nextSibling;
	}
}

Ref::serialHandler = [
	'handle' => /* async */function ( $node, $state, $wrapperUnmodified ) use ( &$DOMDataUtils, &$ContentUtils ) {
		$startTagSrc = /* await */ $state->serializer->serializeExtensionStartTag( $node, $state );
		$dataMw = DOMDataUtils::getDataMw( $node );
		$env = $state->env;
		$html = null;
		if ( !$dataMw->body ) {
			return $startTagSrc; // We self-closed this already.
		} else { // We self-closed this already.
		if ( gettype( $dataMw->body->html ) === 'string' ) {
			// First look for the extension's content in data-mw.body.html
			$html = $dataMw->body->html;
		} elseif ( gettype( $dataMw->body->id ) === 'string' ) {
			// If the body isn't contained in data-mw.body.html, look if
			// there's an element pointed to by body.id.
			$bodyElt = $node->ownerDocument->getElementById( $dataMw->body->id );
			if ( !$bodyElt && $env->page->editedDoc ) {
				// Try to get to it from the main page.
				// This can happen when the <ref> is inside another
				// extension, most commonly inside a <references>.
				// The recursive call to serializeDOM puts us inside
				// inside a new document.
				$bodyElt = $env->page->editedDoc->getElementById( $dataMw->body->id );
			}
			if ( $bodyElt ) {
				// n.b. this is going to drop any diff markers but since
				// the dom differ doesn't traverse into extension content
				// none should exist anyways.
				DOMDataUtils::visitAndStoreDataAttribs( $bodyElt );
				$html = ContentUtils::toXML( $bodyElt, [ 'innerXML' => true ] );
				DOMDataUtils::visitAndLoadDataAttribs( $bodyElt );
			} else {
				// Some extra debugging for VisualEditor
				$extraDebug = '';
				$firstA = $node->querySelector( 'a[href]' );
				if ( $firstA && preg_match( '/^#/', $firstA->getAttribute( 'href' ) || '' ) ) {
					$href = $firstA->getAttribute( 'href' ) || '';
					try {
						$ref = $node->ownerDocument->querySelector( $href );
						if ( $ref ) {
							$extraDebug += ' [own doc: ' . $ref->outerHTML . ']';
						}
						$ref = $env->page->editedDoc->querySelector( $href );
						if ( $ref ) {
							$extraDebug += ' [main doc: ' . $ref->outerHTML . ']';
						}
					} catch ( Exception $e ) {
		   }// eslint-disable-line
					// eslint-disable-line
					if ( !$extraDebug ) {
						$extraDebug = ' [reference ' . $href . ' not found]';
					}
				}
				$env->log( 'error/' . $dataMw->name,
					'extension src id ' . $dataMw->body->id
. ' points to non-existent element for:', $node->outerHTML,
					'. More debug info: ', $extraDebug
				);
				return ''; // Drop it!
			}
		} else { // Drop it!

			$env->log( 'error', 'Ref body unavailable for: ' . $node->outerHTML );
			return ''; // Drop it!
		}// Drop it!
		}

		$src = /* await */ $state->serializer->serializeHTML( [
				'env' => $state->env,
				'extName' => $dataMw->name,
				// FIXME: One-off PHP parser state leak.
				// This needs a better solution.
				'inPHPBlock' => true
			], $html
		);
		return $startTagSrc + $src . '</' . $dataMw->name . '>';
	}

];

$module->exports = $Ref;