gistfile1.txt

app.get("/k/listings/:name", function(req, res){

    var id =  req.url.replace("/k/listings/", "");
    console.log(id);


    db.ref("pre_processed_listings/"+id).once("value",function(snapshot) {
       

        if (snapshot.val() != null) {
             db.ref("pre_processed_listings/"+id+"/_state").set("in_progress");
            db.ref("listings/"+id).set(snapshot.val()).then(function() {

                // Add listing to User Data
                db.ref("additional/user_data/"+snapshot.val().author_id+"/associated_listings/"+id).set(true);

                // Add Listing to Tags Data
                var listener_listings = db.ref("listings/"+id+"/tags");
                listener_listings.on("child_added",function (tags) {
                    
                    db.ref("additional/tags_data/"+tags.val()+"/"+id).set(true);
                });
                listener_listings.once("value",function (tags) {
                    listener_listings.off();
                
                });

                // Add Listing to Category Data
                db.ref("additional/category_data/"+snapshot.val().category_id+"/listings/"+id).set(true).then(function(){
                    db.ref("pre_processed_listings/"+id).remove();
                });
            });
        }
    });

});