Move all topics from one category to another and delete the current category - Discourse

MergeCategory.js

/**
Please Note that this script is for Discourse Forum
To move all posts in the CURRENT category to another category
For example i want to move all the topics in the current category to category number 70
Just open the category. open Developer tools, paste this in the console and type the command moveAndDeleteCategory("70")

You can get the category id by going to /site.json
*/
function whenElementExistsThenDo(selector, fn, count) {
    if (!count) count = 0;
    if (count > 1500) {
        console.log('I did all i could');
		return false;
    }
    if ($(selector).length > 0) {
        fn();
    } else {
        console.log('waiting for ' + selector);
        setTimeout(function(){
            whenElementExistsThenDo(selector, fn, count+1);
        }, 100);
    }
}



// empties then deletes the category

// if category fails to delete, refreshes and you can do it again

function moveAndDeleteCategory (newCat) {
	newCat = newCat+""; //convert to string if not already a string
    $('button.bulk-select').trigger('click'); // select items

    $('input.bulk-select').trigger('click');

    whenElementExistsThenDo('#bulk-select > button', function(){

        $('#bulk-select > button').trigger('click'); // bulk-process

        whenElementExistsThenDo('button:contains("Set Category")', function(){

            $('button:contains("Set Category")').trigger('click'); // selects move
	    $('.category-combobox').val(newCat).change()
	    $('button:contains("Set Category")').trigger('click'); // moves items
            setTimeout(function(){

            whenElementExistsThenDo('.edit-category', function(){

                deleteCategory();

            });

        },500);

        });

    });

}


function deleteCategory () {

     $('.edit-category').trigger('click'); // edit category

    whenElementExistsThenDo('button:contains("Delete Category")', function(){

        $('button:contains("Delete Category")').trigger('click'); // delete category

        $('.modal-footer> a.btn-primary[data-handler="1"]').trigger('click');
        // in a sec, let's check and make sure it didn't error with an odd modal
        setTimeout(function(){
            whenElementExistsThenDo('.edit-category', function(){ // if unsuccessful
                $('.modal-middle-container').trigger('click'); // dismiss modal
		console.log("We Failed");
            });

        },500);

    });

}