Initial commit

app/controllers/application_controller.rb

@@ -0,0 +1,35 @@
+class ApplicationController < ActionController::Base
+  # Only allow modern browsers supporting webp images, web push, badges, import maps, CSS nesting, and CSS :has.
+  allow_browser versions: :modern
+
+  private
+
+  def authenticate_user!
+    redirect_to new_session_path unless user_signed_in?
+  end
+
+  def current_user
+    Current.user || authenticate_user_from_session
+  end
+  helper_method :current_user
+
+  def authenticate_user_from_session
+    User.find_by(id: session[:user_id])
+  end  
+
+  def user_signed_in?
+    current_user.present?
+  end
+  helper_method :user_signed_in?
+
+  def login(user)
+    Current.user = user
+    reset_session
+    session[:user_id] = user.id
+  end
+
+  def logout
+    Current.user = nil
+    reset_session
+  end
+end