// <nowiki>
/**
 * MOSTIES English-variety script
 */

(function () {
    'use strict';

    mw.loader.using(['mediawiki.util', 'mediawiki.api']).then(function () {

        const varieties = [
            "South African English",
            "American English",
            "Australian English",
            "New Zealand English",
            "Hiberno-English",
            "Namibian English",
            "British English",
            "Nigerian English",
            "Pakistani English",
            "Indian English",
            "Canadian English",
            "Hong Kong English"
        ];

        const TEMPLATE_PREFIX = "Use ";
        const MONTH = "{{subst:CURRENTMONTHNAME}}";
        const YEAR = "{{subst:CURRENTYEAR}}";

        // Add button to actions menu
        const link = mw.util.addPortletLink(
            'p-cactions',
            '#',
            'MOSTIES templates',
            'ca-mosties',
            'Insert or update English-variety template'
        );

        $(link).on('click', function (e) {
            e.preventDefault();
            openPanel();
        });

        // Floating panel UI
        function openPanel() {
            const $panel = $('<div>')
                .css({
                    background: '#fff',
                    border: '1px solid #aaa',
                    padding: '12px',
                    position: 'fixed',
                    top: '80px',
                    right: '40px',
                    zIndex: 9999
                })
                .append('<strong>Select English variety:</strong><br><br>');

            varieties.forEach(function (variety) {
                $('<button>')
                    .text(variety)
                    .css({ margin: '3px' })
                    .on('click', () => applyTemplate(variety))
                    .appendTo($panel);
            });

            $('<button>')
                .text("Close")
                .css({ marginTop: '10px', display: 'block' })
                .on('click', () => $panel.remove())
                .appendTo($panel);

            $('body').append($panel);
        }

        // Main logic
        async function applyTemplate(variety) {
            const api = new mw.Api();
            const title = mw.config.get('wgPageName');

            const pageData = await api.get({
                action: 'query',
                prop: 'revisions',
                rvprop: 'content',
                titles: title,
                formatversion: 2
            });

            const text = pageData.query.pages[0].revisions[0].content;
            const namespace = mw.config.get('wgNamespaceNumber');

            const newTemplate =
                `{{${TEMPLATE_PREFIX}${variety}|date=${MONTH} ${YEAR}}}`;

            // Detect any existing Use [X] English template
            const reg = /\{\{Use\s+[^\}|]+English[^\}]*\}\}/i;
            const found = text.match(reg);

            // If the SAME variety already exists → do nothing
            if (found && found[0].includes(variety)) {
                mw.notify("MOSTIES: Template for this variety already present — no changes made.");
                return;
            }

            let updatedText;

            // Case 1: Replace existing template
            if (found) {
                updatedText = text.replace(reg, newTemplate);

            // Case 2: Draftspace (namespace 118) → insert after {{Draft article}}
            } else if (namespace === 118) {
                const draftRegex = /\{\{[Dd]raft article[^\}]*\}\}\s*/;

                if (draftRegex.test(text)) {
                    updatedText = text.replace(draftRegex, m => m + newTemplate + "\n");
                } else {
                    // Fallback if Draft article template not found
                    updatedText = newTemplate + "\n" + text;
                }

            // Case 3: Mainspace or other → insert at top
            } else {
                updatedText = newTemplate + "\n" + text;
            }

            // Save edit to Wikipedia
            await api.postWithToken('csrf', {
                action: 'edit',
                title: title,
                text: updatedText,
                summary: `[[User:RedShellMomentum/script/MOSTIES templates.js|script]]-assisted English-variety template addition per [[MOS:TIES]]`,
                minor: true
            });

            mw.notify(`Success!`);
            location.reload();
        }

    });
})();
// </nowiki>