refactor: split up ResponseHandler

Now we have a Dispatcher and two ResponseHandlers that have the same interface.

Moving towards a Chain of Responsibility pattern.

1 files changed, 46 insertions, 0 deletions

diff --git a/lib/nickserver/dispatcher.rb b/lib/nickserver/dispatcher.rb
new file mode 100644
index 0000000..b818b98
--- /dev/null
+++ b/lib/nickserver/dispatcher.rb
@@ -0,0 +1,46 @@
+require 'nickserver/request'
+require 'nickserver/request_handlers/email_handler'
+require 'nickserver/request_handlers/fingerprint_handler'
+
+module Nickserver
+  class Dispatcher
+
+    def initialize(responder)
+      @responder = responder
+    end
+
+    def respond_to(params, headers)
+      request = Nickserver::Request.new params, headers
+      response = handle request
+      send_response response.status, response.content
+    end
+
+    protected
+
+    def handle(request)
+      handler = handler_for_request request
+      handler.call request
+    rescue RuntimeError => exc
+      puts "Error: #{exc}"
+      puts exc.backtrace
+      ErrorResponse.new(exc.to_s)
+    end
+
+    def handler_for_request(request)
+      if request.email
+        RequestHandlers::EmailHandler.new
+      elsif request.fingerprint
+        RequestHandlers::FingerprintHandler.new
+      else
+        Proc.new { Nickserver::Response.new(404, "Not Found\n") }
+      end
+    end
+
+    def send_response(status = 200, content = '')
+      responder.respond status, content
+    end
+
+    attr_reader :responder
+
+  end
+end