User:Novem Linguae/Scripts/DetectG4G5.js

Code that you insert on this page could contain malicious content capable of compromising your account. If you import a script from another page with "importScript", "mw.loader.load", "iusc", or "lusc", take note that this causes you to dynamically load a remote script, which could be changed by others. Editors are responsible for all edits and actions they perform, including by scripts. User scripts are not centrally supported and may malfunction or become inoperable due to software changes. A guide to help you find broken scripts is available. If you are unsure whether code you are adding to this page is safe, you can ask at the appropriate village pump.
This code will be executed when previewing this page.

Documentation for this user script can be added at User:Novem Linguae/Scripts/DetectG4G5.

Note: After saving, you have to bypass your browser's cache to see the changes. Google Chrome, Firefox, Microsoft Edge and Safari: Hold down the ⇧ Shift key and click the Reload toolbar button. For details and instructions about other browsers, see Wikipedia:Bypass your cache.

// <nowiki>

/*
- Displays an alert if an article may be a CSD G4 (previous AFD) or CSD G5 (created by a sockpuppet)
- Useful for new page patrolling
- Only runs on pages that have not been marked as reviewed
*/

// TODO: Code review. Is there a way to reduce the # of API queries?

class DetectG4G5 {
	async execute() {
		if ( ! this.shouldRunOnThisPage() ) return;
		
		let title = mw.config.get('wgPageName'); // includes namespace, underscores instead of spaces
		let pageID = mw.config.get('wgArticleId');

		if ( await this.isReviewed(pageID) ) {
			return;
		}

		if ( await this.afdExists(title) && ! await this.hasAFDTemplate(title) ) {
			let href = mw.config.get('wgArticlePath').replace('$1', 'Wikipedia:Articles_for_deletion/' + title);
			this.displayWarning(`<span style="font-weight:bold">CSD G4:</span> There is an <a href="${href}">AFD page</a> for this article. It may qualify for CSD G4.`);
		}

		let pageCreator = await this.getPageCreator(title);
		if ( await this.isBlocked(pageCreator) ) {
			this.displayWarning('<span style="font-weight:bold">CSD G5:</span> The creator of this page is blocked. This article may qualify for CSD G5.');
		}

		if ( await this.isGloballyLocked(pageCreator) ) {
			this.displayWarning('<span style="font-weight:bold">CSD G5:</span> The creator of this page is globally locked. This article may qualify for CSD G5.');
		}
	}

	async getWikicode(title) {
		if ( ! mw.config.get('wgCurRevisionId') ) return ''; // if page is deleted, return blank
		var wikicode = '';
		title = encodeURIComponent(title);
		await $.ajax({
			url: 'https://en.wikipedia.org/w/api.php?action=parse&page='+title+'&prop=wikitext&formatversion=2&format=json',
			success: function (result) {
				wikicode = result['parse']['wikitext'];
			},
			dataType: "json",
			async: false
		});
		return wikicode;
	}

	async hasAFDTemplate(title) {
		let wikicode = await this.getWikicode(title);
		return wikicode.indexOf('{{Article for deletion') !== -1;
	}

	displayWarning(html) {
		$('#contentSub').before(`<div class="DetectG4G5" style="background-color: red">${html}</div>`);
	}

	async isReviewed(pageID) {
		let api = new mw.Api();
		let response = await api.get( {
			action: 'pagetriagelist',
			format: 'json',
			page_id: pageID,
		} );

		// no result
		if ( response.pagetriagelist.result !== 'success' || response.pagetriagelist.pages.length === 0 ) {
			return true;
		// 1, 2, or 3
		} else if ( parseInt(response.pagetriagelist.pages[0].patrol_status) > 0 ) {
			return true;
		// 0
		} else {
			return false;
		}
	}

	async afdExists(title) {
		title = 'Wikipedia:Articles_for_deletion/' + title;
		return await this.pageExists(title);
	}

	async pageExists(title) {
		let api = new mw.Api();
		let response = await api.get( {
			action: 'query',
			format: 'json',
			prop: 'revisions',
			titles: title,
		} );
		let exists = typeof response.query.pages['-1'] === 'undefined';
		return exists;
	}

	async isBlocked(username) {
		let api = new mw.Api();
		let response = await api.get( {
			action: "query",
			format: "json",
			list: "users",
			usprop: "blockinfo",
			ususers: username,
		} );
		let isBlocked = typeof response.query.users[0].blockid !== 'undefined';
		return isBlocked;
	}

	async isGloballyLocked(username) {
		let api = new mw.Api();
		let response = await api.get( {
			action: 'query',
			list: 'globalallusers',
			agulimit: '1',
			agufrom: username,
			aguto: username,
			aguprop: 'lockinfo',
		} );
		let isLocked = response.query.globalallusers.length !== 0 && response.query.globalallusers[0].locked === '';
		return isLocked;
	}

	getFirstValueInObject(obj) {
		return obj[Object.keys(obj)[0]];
	}

	async getPageCreator(title) {
		let api = new mw.Api();
		let response = await api.get( {
			"action": "query",
			"format": "json",
			"prop": "revisions",
			"titles": title,
			"rvlimit": "1",
			"rvdir": "newer"
		} );
		let page = this.getFirstValueInObject(response.query.pages);
		let pageCreator = page.revisions[0].user;
		return pageCreator;
	}

	shouldRunOnThisPage() {
		// don't run when not viewing articles
		let action = mw.config.get('wgAction');
		if ( action != 'view' ) return false;
		
		// don't run when viewing diffs
		let isDiff = mw.config.get('wgDiffNewId');
		if ( isDiff ) return false;
		
		let isDeletedPage = ( ! mw.config.get('wgCurRevisionId') );
		if ( isDeletedPage ) return false;
		
		// Only run in mainspace
		let namespace = mw.config.get('wgNamespaceNumber');
		let title = mw.config.get('wgPageName'); // includes namespace, underscores instead of spaces
		if ( namespace !== 0 && title != 'User:Novem_Linguae/sandbox' ) return false;

		return true;
	}
}

$(async function() {
	await mw.loader.using(['mediawiki.api'], async () => {
		let dg4g5 = new DetectG4G5();
		await dg4g5.execute();
	});
});


// </nowiki>