User:The Transhumanist/FetchCat.js

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// Started from User:DannyS712/Cat links 2.js and User:DannyS712 test/append.js

mw.loader.using( 'mediawiki.util', function () {
    $(document).ready( function () { 
        var link = mw.util.addPortletLink( 'p-tb', '#', 'Fetch category', 'tb-fetchCat', 'Get the links from a category' , '' , ''); 
        $( link ).click( function ( event ) {
            event.preventDefault();
            cats();
        } );
    } );
} );


function cats () {
	var page = prompt("Please enter the category name (not including \"Category:\")", "Wikipedians");

	var ns = 0;

	if (page === null || page === "") {
	  console.log( "User cancelled the prompt." );
	} else {
		console.log( page );
		var catRequest = {
            action: 'query',
            list: 'categorymembers',
            cmlimit: 500,
            cmtitle: 'Category:' + page,
            cmprop: 'title',
            format: 'json'
		};
		$.get( mw.config.get( 'wgScriptPath' ) + '/api.php', catRequest, function( catResponse ) {
			var pages = catResponse.query.categorymembers;
			var listed = [];
			var links = "";
			for (var i = 0; i < pages.length; i++) {
				if ( pages[i].ns === ns ) {
					var this_link = '* [[' + pages[i].title + ']]\n';
					listed.push(this_link);
					links = links + this_link;
				}
			}
			if ( links === "" ) {
				alert( "There are no pages in the specified namespace in that category." );
			}
			else addNewSection( 'Fetch links from category using [[User:The Transhumanist/FetchCat.js|FetchCat]]', page , links );
		} );
	}
}

function getToken() {
	var tokenReq = {
        action: 'query',
        meta: 'tokens',
        format: 'json'
	};
     var result = null;
     var scriptUrl = mw.config.get( 'wgScriptPath' ) + '/api.php';
     $.ajax({
        url: scriptUrl,
        type: 'get',
        data: tokenReq,
        dataType: 'json',
        async: false,
        success: function(data) {
            result = data.query.tokens.csrftoken;
        } 
     });
     return result;
}

function addNewSection( summary, title, content) {
    $.ajax({
        url: mw.util.wikiScript( 'api' ),
        data: {
            format: 'json',
            action: 'edit',
            title: mw.config.get( 'wgPageName' ),
            section: 'new',
            sectiontitle: title,
            summary: summary,
            text: content,
            token: getToken()
        },
        dataType: 'json',
        type: 'POST',
        success: function( data ) {
            if ( data && data.edit && data.edit.result == 'Success' ) {
                window.location.reload(); // reload page if edit was successful
            } else if ( data && data.error ) {
                alert( 'Error: API returned error code "' + data.error.code + '": ' + data.error.info );
            } else {
                alert( 'Error: Unknown result from API.' );
            }
        },
        error: function( xhr ) {
            alert( 'Error: Request failed.' );
        }
    });
}