support old API with a warning until 0.3

lib/blue_factory/configuration.rb

···
   configurable :publisher_did, :hostname, :validate_responses, :enable_unsafe_auth
 
   set :validate_responses, (environment != :production)
+
+  def self.set(property, value)
+    if property.to_sym == :enable_unsafe_auth
+      puts "==="
+      puts "WARNING: option :enable_unsafe_auth and old API get_posts(args, user_did) is deprecated and will be removed in version 0.3."
+      puts "Switch to get_posts(args, context) instead and get the user DID from: context.user.raw_did."
+      puts "==="
+      @enable_unsafe_auth = value
+    else
+      super
+    end
+  end
 end

lib/blue_factory/modules/configurable.rb

···
       if @properties.include?(property.to_sym)
         self.instance_variable_set("@#{property}", value)
       else
-        raise NoMethodError
+        raise NoMethodError, "No such property: #{property}"
       end
     end
 

lib/blue_factory/server.rb

···
         get_posts = feed.method(:get_posts)
         args = params.slice(:feed, :cursor, :limit)
 
-        if get_posts.arity == 1
+        if config.enable_unsafe_auth
+          context = RequestContext.new(request)
+          response = feed.get_posts(args, context.user.raw_did)
+        elsif get_posts.arity == 1
           response = feed.get_posts(args)
         elsif get_posts.arity == 2
           context = RequestContext.new(request)