update minecraft name changes automatically

app/controllers/sessions_controller.rb

@@ -1,5 +1,7 @@
 class SessionsController < ApplicationController
 
+  include UsersHelper
+
   def new
     if current_user
       flash[:alert] = "You are already logged in!"
@@ -19,8 +21,17 @@ class SessionsController < ApplicationController
           flash[:alert] = "You are banned!"
         else
           session[:user_id] = user.id
-          flash[:alert] = "Remember to validate your email! Your account may be deleted soon!" if !user.confirmed?
           flash[:notice] = "Logged in!"
+
+          new_ign = fetch_name(user.uuid)
+          if new_ign.present? && new_ign != user.ign
+            user.name = new_ign if user.ign == user.name
+            user.ign = new_ign
+            user.save
+            flash[:notice] += " Your name has been changed to #{new_ign}!"
+          end
+
+          flash[:alert] = "Remember to validate your email! Your account may be deleted soon!" if !user.confirmed?
         end
       else
         flash[:alert] = "You're doing it wrong!"

app/helpers/users_helper.rb

@@ -27,4 +27,26 @@ require "open-uri"
     yt
   end
 
+  def fetch_name(uuid)
+    uri  = URI.parse("https://api.mojang.com/user/profiles/#{CGI.escape(uuid)}/names")
+    http = Net::HTTP.new(uri.host, uri.port)
+    http.open_timeout = 3
+    http.read_timeout = 3
+    http.use_ssl = true
+
+    begin
+      response = http.get(uri)
+      if response.code == "200"
+        data = JSON.load(response.body)
+        return data.last["name"]
+      end
+    rescue => e
+      Rails.logger.error "----"
+      Rails.logger.error "Failed to get mojang profile for #{uuid}"
+      Rails.logger.error e.message
+      Rails.logger.error "----"
+      return nil
+    end
+  end
+
 end