// <nowiki>

/*
- Displays whether or not a mainspace page is marked as reviewed. This info is placed on the right of the page title using a small icon.
- Without a script like this, you need to be a new page reviewer or admin and look at the Page Curation toolbar. Or you need to use Special:Log -> Page Curation Log. And there is also some complex logic. For example, the absence of a log entry means the page is marked as reviewed.
*/

// TODO: display whether the page is indexed or not. can do this by using JS to look for "noindex", or can do this by checking the first revision date.
// TODO: display in all namespaces
// TODO: do I need to use different code to check if marked as patrolled? I think that uses recentchanges table... maybe?

class ReviewStatus {
	async execute() {
		if ( !this.shouldRunOnThisPage() ) {
			return;
		}

		const pageID = mw.config.get( 'wgArticleId' );
		const boolIsReviewed = await this.isReviewed( pageID );
		let htmlToInsert = '';

		// modules/ext.pageTriage.views.toolbar/images/icons/

		if ( boolIsReviewed ) {
			htmlToInsert = ' <img src="https://en.wikipedia.org/w/extensions/PageTriage/modules/ext.pageTriage.toolbar/images/pageInfo/icon_reviewed.png" title="Reviewed" />';
		} else {
			htmlToInsert = ' <img src="https://en.wikipedia.org/w/extensions/PageTriage/modules/ext.pageTriage.toolbar/images/pageInfo/icon_not_reviewed.png" title="Not reviewed" />';
		}

		if ( this.pageHasSections() ) {
			$( '#firstHeading .mw-editsection' ).before( htmlToInsert );
		} else {
			$( '#firstHeading' ).append( htmlToInsert );
		}
	}

	/**
	 * @param {number} pageID The page ID number. A positive number with no commas.
	 */
	async isReviewed( pageID ) {
		const api = new mw.Api();
		const response = await api.get( {
			action: 'query',
			format: 'json',
			formatversion: '2',
			prop: 'isreviewed',
			pageids: pageID
		} );
		return response.query.pages[ 0 ].isreviewed;
	}

	shouldRunOnThisPage() {
		// don't run when not viewing articles
		const action = mw.config.get( 'wgAction' );
		if ( action !== 'view' ) {
			return false;
		}

		// don't run when viewing diffs
		const isDiff = mw.config.get( 'wgDiffNewId' );
		if ( isDiff ) {
			return false;
		}

		const isDeletedPage = ( !mw.config.get( 'wgCurRevisionId' ) );
		if ( isDeletedPage ) {
			return false;
		}

		// Only run in mainspace
		const namespace = mw.config.get( 'wgNamespaceNumber' );
		const isMainspaceOrDraftspace = ( [ 0 ].includes( namespace ) );
		if ( !isMainspaceOrDraftspace ) {
			return false;
		}

		return true;
	}

	pageHasSections() {
		return $( '#firstHeading .mw-editsection' ).length;
	}
}

$( async function () {
	await mw.loader.using( [ 'mediawiki.api' ], async function () {
		await ( new ReviewStatus() ).execute();
	} );
} );

// </nowiki>