User:DreamRimmer/MergeHelper.js

//<nowiki>
$(document).ready(function () {
    function initMerge() {
        $('#mw-content-text > p').remove();
        $('#firstHeading').text('MergeHelper');

        var page1Input = new OO.ui.TextInputWidget({ placeholder: 'Source page' }),
            page2Input = new OO.ui.TextInputWidget({ placeholder: 'Destination page' }),
            loadBtn = new OO.ui.ButtonWidget({ label: 'Load wikitext', flags: ['primary'] }),
            page1Text = new OO.ui.MultilineTextInputWidget({ placeholder: 'Source page wikitext', autosize: true, rows: 20, disabled: true }),
            page2Text = new OO.ui.MultilineTextInputWidget({ placeholder: 'Destination page wikitext', autosize: true, rows: 20, disabled: true }),
            summary1Input = new OO.ui.TextInputWidget({ placeholder: 'Edit summary' }),
            summary2Input = new OO.ui.TextInputWidget({ placeholder: 'Edit summary' }),
            redirectCheck = new OO.ui.CheckboxInputWidget({ selected: false }).on('change', updateRedirect),
            previewBtn = new OO.ui.ButtonWidget({ label: 'Preview Changes', flags: ['primary'], disabled: true }),
            saveBtn = new OO.ui.ButtonWidget({ label: 'Save Changes', icon: 'check', flags: ['primary', 'progressive'], disabled: true }),
            cancelBtn = new OO.ui.ButtonWidget({ label: 'Cancel', flags: ['primary', 'destructive'], href: 'https:' + mw.config.get('wgServer') }),
            logDiv = $("<div>").hide(),
            redirectDiv = $('<div>').css({ 'display': 'flex', 'align-items': 'center', 'gap': '10px' }).append(redirectCheck.$element, $('<p>').text('Redirect the source page to the destination page')).hide();

        $('#mw-content-text').append(
            $('<p>').text('Source page:').css('font-weight', 'bold'), page1Input.$element,
            $('<p>').text('Destination page:').css('font-weight', 'bold'), page2Input.$element,
            loadBtn.$element,
            $('<div>').css({ 'display': 'flex', 'gap': '10px' }).append(
                $('<div>').css({ 'flex': '1', 'border': '1px solid #ccc', 'padding': '10px', 'box-sizing': 'border-box', 'min-width': '45%', 'max-width': '45%', 'overflow': 'auto' }).append(
                    $('<p>').text('Source page wikitext:').css('font-weight', 'bold'), page1Text.$element
                ),
                $('<div>').css({ 'flex': '1', 'border': '1px solid #ccc', 'padding': '10px', 'box-sizing': 'border-box', 'min-width': '45%', 'max-width': '45%', 'overflow': 'auto' }).append(
                    $('<p>').text('Destination page wikitext:').css('font-weight', 'bold'), page2Text.$element
                )
            ),
            $('<div>').css({ 'display': 'flex', 'gap': '10px' }).append(
                $('<div>').css({ 'flex': '1', 'border': '1px solid #ccc', 'padding': '10px', 'box-sizing': 'border-box', 'min-width': '45%', 'max-width': '45%', 'overflow': 'auto' }).append(
                    $('<p>').text('Summary:').css('font-weight', 'bold'), summary1Input.$element
                ),
                $('<div>').css({ 'flex': '1', 'border': '1px solid #ccc', 'padding': '10px', 'box-sizing': 'border-box', 'min-width': '45%', 'max-width': '45%', 'overflow': 'auto' }).append(
                    $('<p>').text('Summary:').css('font-weight', 'bold'), summary2Input.$element
                )
            ),
            redirectDiv,
            '<br/>',
            previewBtn.$element,
            saveBtn.$element,
            cancelBtn.$element,
            '<br/>',
            logDiv
        );

        function loadPage(name, callback) {
            (new mw.Api()).get({
                action: 'query',
                prop: 'revisions',
                titles: name,
                rvprop: 'content',
                formatversion: 2
            }).done(function (data) {
                var pages = data.query.pages;
                if (pages && pages[0] && pages[0].revisions) {
                    callback(null, pages[0].revisions[0].content);
                } else {
                    callback('Could not load page content');
                }
            }).fail(function () {
                callback('Could not load page content');
            });
        }

        function renderPreview(name, wikitext, container) {
            (new mw.Api()).post({
                action: 'parse',
                text: wikitext,
                title: name,
                contentmodel: 'wikitext',
                format: 'json'
            }).done(function (data) {
                container.html(data.parse.text['*']);
            }).fail(function () {
                container.html('<p>Error loading preview</p>');
            });
        }

        function showAlert(msg) {
            alert("Error: " + msg);
        }

        function loadWikitext() {
            var page1Name = page1Input.getValue().trim(),
                page2Name = page2Input.getValue().trim();

            if (!page1Name || !page2Name) {
                showAlert("Please fill in both page names");
                return;
            }

            logDiv.empty().hide();
            loadPage(page1Name, function (err1, content1) {
                if (err1) {
                    showAlert(err1);
                    return;
                }
                loadPage(page2Name, function (err2, content2) {
                    if (err2) {
                        showAlert(err2);
                        return;
                    }
                    page1Text.setValue(content1).setDisabled(false);
                    page2Text.setValue(content2).setDisabled(false);
                    previewBtn.setDisabled(false);
                    saveBtn.setDisabled(false);
                    summary1Input.setValue("Merged to [[" + page2Name + "]]");
                    summary2Input.setValue("Merged from [[" + page1Name + "]]");
                    redirectDiv.show();
                });
            });
        }

        function updateRedirect(checked) {
            var page2Name = page2Input.getValue().trim(),
                content1 = page1Text.getValue();

            if (checked) {
                content1 = "#REDIRECT [[" + page2Name + "]]\n\n" + content1;
            } else {
                content1 = content1.replace(new RegExp("^#REDIRECT \\[\\[" + page2Name + "\\]\\]\\s*\n\n"), '');
            }

            page1Text.setValue(content1);
        }

        function previewMerge() {
            var page1Name = page1Input.getValue().trim(),
                page2Name = page2Input.getValue().trim(),
                content1 = page1Text.getValue(),
                content2 = page2Text.getValue();

            var preview1 = $('<div>').css({ border: '1px solid #ccc', padding: '10px', margin: '10px', flex: '1', overflow: 'auto', height: '1000px', width: '412px' });
            var preview2 = $('<div>').css({ border: '1px solid #ccc', padding: '10px', margin: '10px', flex: '1', overflow: 'auto', height: '1000px', width: '412px' });

            logDiv.empty().append(
                $('<div>').css({ 'display': 'flex', 'gap': '10px' }).append(
                    $('<div>').css('flex', '1').append($('<h2>').text('Preview of ' + page1Name), preview1),
                    $('<div>').css('flex', '1').append($('<h2>').text('Preview of ' + page2Name), preview2)
                )
            ).show();

            renderPreview(page1Name, content1, preview1);
            renderPreview(page2Name, content2, preview2);
        }

        function saveMerge() {
            var page1Name = page1Input.getValue().trim(),
                page2Name = page2Input.getValue().trim(),
                summary1 = summary1Input.getValue().trim() + " (using [[User:DreamRimmer/MergeHelper|MergeHelper.js]])",
                summary2 = summary2Input.getValue().trim() + " (using [[User:DreamRimmer/MergeHelper|MergeHelper.js]])",
                content1 = page1Text.getValue(),
                content2 = page2Text.getValue();

            function savePage(name, content, summary, callback) {
                (new mw.Api()).postWithToken('csrf', {
                    action: 'edit',
                    title: name,
                    text: content,
                    summary: summary,
                    minor: true
                }).done(function () {
                    callback(null);
                }).fail(function () {
                    callback('Could not save page content');
                });
            }

            savePage(page1Name, content1, summary1, function (err) {
                if (err) {
                    showAlert(err);
                    return;
                }
                savePage(page2Name, content2, summary2, function (err) {
                    if (err) {
                        showAlert(err);
                        return;
                    }
                    alert('Merged successfully!');
                    location.reload();
                });
            });
        }

        loadBtn.on('click', loadWikitext);
        previewBtn.on('click', previewMerge);
        saveBtn.on('click', saveMerge);
    }

    $.when(mw.loader.using('mediawiki.util'), $.ready).then(function () {
        mw.util.addPortletLink('p-tb', mw.util.getUrl('Special:BlankPage/MergeHelper'), 'MergeHelper');
    });

    if (mw.config.get('wgCanonicalSpecialPageName') === 'Blankpage' && mw.config.get('wgTitle').split('/', 2)[1] === 'MergeHelper') {
        $.when(mw.loader.using('oojs-ui-core'), $.ready).then(initMerge);
    }
});

//<nowiki>

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