+ require 'xml/libxml'
+
+ before_filter :authorize
+ after_filter :compress_output
+
+ def create
+ response.headers["Content-Type"] = 'text/xml'
+ if request.put?
+ segment = Segment.from_xml(request.raw_post, true)
+
+ if segment
+ segment.user_id = @user.id
+
+ segment.from_node = Node.find(segment.node_a.to_i)
+ segment.to_node = Node.find(segment.node_b.to_i)
+
+ if segment.from_node == segment.to_node
+ render :nothing => true, :status => HTTP_EXPECTATION_FAILED
+ return
+ end
+
+ unless segment.preconditions_ok? # are the nodes visible?
+ render :nothing => true, :status => HTTP_PRECONDITION_FAILED
+ end
+
+ if segment.save_with_history
+ render :text => segment.id.to_s
+ else
+ render :nothing => true, :status => 500
+ end
+ return
+
+ else
+ render :nothing => true, :status => 400 # if we got here the doc didnt parse
+ return
+ end
+ end
+
+ render :nothing => true, :status => 500 # something went very wrong
+ end
+
+ def rest
+ response.headers["Content-Type"] = 'text/xml'
+ unless Segment.exists?(params[:id])
+ render :nothing => true, :status => 404
+ return
+ end
+
+ segment = Segment.find(params[:id])
+
+ case request.method
+
+ when :get
+ render :text => segment.to_xml.to_s
+ return
+
+ when :delete
+ if segment.visible
+ segment.visible = 0
+ segment.save_with_history
+ render :nothing => true
+ else
+ render :nothing => true, :status => 410
+ end
+
+ when :put
+ new_segment = Segment.from_xml(request.raw_post)
+
+ segment.timestamp = Time.now
+ segment.user_id = @user.id
+
+ if new_segment.node_a == new_segment.node_b
+ render :nothing => true, :status => HTTP_EXPECTATION_FAILED
+ return
+ end
+
+ segment.node_a = new_segment.node_a
+ segment.node_b = new_segment.node_b
+
+ segment.tags = new_segment.tags
+ segment.visible = new_segment.visible
+
+ if segment.id == new_segment.id and segment.save_with_history
+ render :nothing => true, :status => HTTP_OK
+ else
+ render :nothing => true, :status => 500
+ end
+ return
+ end
+
+ end
+
+ def segments
+ response.headers["Content-Type"] = 'text/xml'
+ ids = params['segments'].split(',').collect {|s| s.to_i }
+ if ids.length > 0
+ segmentlist = Segment.find(ids)
+ doc = OSM::API.get_xml_doc
+ segmentlist.each do |segment|
+ doc.root << segment.to_xml_node
+ end
+ render :text => doc.to_s
+ else
+ render :nothing => true, :status => 400
+ end
+ end
+