/app/controllers/application_controller.rb

class ApplicationController < ActionController::Base
  protect_from_forgery
  before_filter :mailer_set_url_options
  before_filter :set_footer_html_url 
  
  unless Rails.application.config.consider_all_requests_local
    rescue_from Exceptions::InvalidAction do
      render :file => "public/400.html", :status => :badrequest, :layout => nil
    end
  end

  def mailer_set_url_options
    ActionMailer::Base.default_url_options[:host] = request.host_with_port
  end

  def set_footer_html_url
    @footer_html_url = "http://bitbucket.org/ataraciuk/instedd-tools-footer/raw/tip/footer.js"
  end
   
  def check_login
    if current_user.nil?
      session[:return_to] = request.fullpath
      flash[:alert] = 'You need to sign in to see this page.'
      redirect_to new_user_session_path
      return false
    else
      true
    end
  end
  
  def check_permission(task_hub)
    return false unless check_login
    
    if !current_user.authorized_to(task_hub)
      session[:return_to] = request.fullpath
      flash[:alert] = 'You don\' t have permission to see this page. Ask the hub admin for it.'
      redirect_to request_permission_task_hub_path(task_hub)
      return false
    else
      true
    end
  end
  
  private
  
  def after_sign_in_path_for(resource_or_scope)
    (session[:return_to] || root_url).to_s
  end
end