MediaWiki:Gadget-WantedPagesMainspace.js

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// Gadget: WantedPagesMainspace
// Filters a transcluded Special:WantedPages list down to mainspace-only,
// with a blacklist of prefixes for admin/help/template/internal stuff.

mw.loader.using(['mediawiki.Title', 'mediawiki.util'], function () {
    // Only run on the specific portal (adjust if you want a different page)
    if (mw.config.get('wgPageName') !== 'Portal:WantedPages') {
        return;
    }

    var container = document.getElementById('wantedpages-mainonly');
    if (!container) {
        return;
    }

    // Prefixes we never want to show here (text check)
    var bannedPrefixes = [
        'Help:',
        'Template:',
        'The Deep Tech Wiki:',
        'Wikipedia:',
        'Wikipedia talk:',
        'WP:',
        'Wp:',
        'Project:',
        'Category:',
        'File:',
        'Module:',
        'MediaWiki:',
        'User:',
        'User talk:',
        'Talk:'
    ];

    function isBannedPrefix(text) {
        for (var i = 0; i < bannedPrefixes.length; i++) {
            if (text.indexOf(bannedPrefixes[i]) === 0) {
                return true;
            }
        }
        return false;
    }

    // Optional: exact titles you never want (even if mainspace)
    var bannedExactTitles = [
        // 'Stats:EN/Sitemap',
        // 'Red link example'
    ];

    function isBannedExact(text) {
        return bannedExactTitles.indexOf(text) !== -1;
    }

    // Collect all links produced by the transcluded Special:WantedPages
    var links = container.querySelectorAll('a');
    var mainspaceLinks = [];
    var seen = Object.create(null);  // for deduping by title key

    links.forEach(function (link) {
        var href = link.getAttribute('href') || '';
        var text = (link.textContent || '').trim();
        if (!text) {
            return;
        }

        // Skip the "222 links" type entries, which point to Special:WhatLinksHere
        if (href.indexOf('Special:WhatLinksHere') !== -1) {
            return;
        }

        // Quick blacklist checks on raw text
        if (isBannedPrefix(text) || isBannedExact(text)) {
            return;
        }

        // Determine the target title; prefer the title attribute if present
        var titleText = link.getAttribute('title') || text;
        var titleObj = mw.Title.newFromText(titleText);
        if (!titleObj) {
            return;
        }

        // Namespace 0 is the main/article namespace
        if (titleObj.getNamespaceId() !== 0) {
            return;
        }

        // Deduplicate based on normalized DB key
        var key = titleObj.getPrefixedDb();
        if (seen[key]) {
            return;
        }
        seen[key] = true;

        // Passed all filters; keep a clone of the link
        mainspaceLinks.push(link.cloneNode(true));
    });

    // Build a new clean <ul> with only accepted links
    var ul = document.createElement('ul');
    mainspaceLinks.forEach(function (l) {
        var li = document.createElement('li');
        li.appendChild(l);
        ul.appendChild(li);
    });

    // Replace the original contents with the cleaned list
    container.innerHTML = '';
    container.appendChild(ul);
});