+ require 'xml/libxml'
+
+ before_filter :authorize, :only => [:create, :update, :delete]
+ after_filter :compress_output
+
+ def create
+ if request.put?
+ segment = Segment.from_xml(request.raw_post, true)
+
+ if segment
+ if segment.node_a == segment.node_b
+ render :nothing => true, :status => :expectation_failed
+ elsif !segment.preconditions_ok?
+ render :nothing => true, :status => :precondition_failed
+ else
+ 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.save_with_history
+ render :text => segment.id.to_s, :content_type => "text/plain"
+ else
+ render :nothing => true, :status => :internal_server_error
+ end
+ end
+ else
+ render :nothing => true, :status => :bad_request
+ end
+ else
+ render :nothing => true, :status => :method_not_allowed
+ end
+ end
+
+ def read
+ begin
+ segment = Segment.find(params[:id])
+
+ if segment.visible
+ render :text => segment.to_xml.to_s, :content_type => "text/xml"
+ else
+ render :nothing => true, :status => :gone
+ end
+ rescue ActiveRecord::RecordNotFound
+ render :nothing => true, :status => :not_found
+ rescue
+ render :nothing => true, :status => :internal_server_error
+ end
+ end
+
+ def update
+ begin
+ segment = Segment.find(params[:id])
+
+ if segment.visible
+ new_segment = Segment.from_xml(request.raw_post)
+
+ if new_segment and new_segment.id == segment.id
+ if new_segment.node_a == new_segment.node_b
+ render :nothing => true, :status => :expectation_failed
+ elsif !new_segment.preconditions_ok?
+ render :nothing => true, :status => :precondition_failed
+ else
+ segment.user_id = @user.id
+ 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.save_with_history
+ render :nothing => true
+ else
+ render :nothing => true, :status => :internal_server_error
+ end
+ end
+ else
+ render :nothing => true, :status => :bad_request
+ end
+ else
+ render :nothing => true, :status => :gone
+ end
+ rescue ActiveRecord::RecordNotFound
+ render :nothing => true, :status => :not_found
+ rescue
+ render :nothing => true, :status => :internal_server_error
+ end
+ end
+
+ def delete
+ begin
+ segment = Segment.find(params[:id])
+
+ if segment.visible
+ if WaySegment.find(:first, :joins => "INNER JOIN current_ways ON current_ways.id = current_way_segments.id", :conditions => [ "current_ways.visible = 1 AND current_way_segments.segment_id = ?", segment.id ])
+ render :nothing => true, :status => :precondition_failed
+ else
+ segment.user_id = @user.id
+ segment.visible = 0
+
+ if segment.save_with_history
+ render :nothing => true
+ else
+ render :nothing => true, :status => :internal_server_error
+ end
+ end
+ else
+ render :nothing => true, :status => :gone
+ end
+ rescue ActiveRecord::RecordNotFound
+ render :nothing => true, :status => :not_found
+ rescue
+ render :nothing => true, :status => :internal_server_error
+ end
+ end
+
+ def segments
+ ids = params['segments'].split(',').collect { |s| s.to_i }
+
+ if ids.length > 0
+ doc = OSM::API.new.get_xml_doc
+
+ Segment.find(ids).each do |segment|
+ doc.root << segment.to_xml_node
+ end
+
+ render :text => doc.to_s, :content_type => "text/xml"
+ else
+ render :nothing => true, :status => :bad_request
+ end
+ end
+
+ def segments_for_node
+ segmentids = Segment.find(:all, :conditions => ['node_a = ? OR node_b = ?', params[:id], params[:id]]).collect { |s| s.id }.uniq
+
+ if segmentids.length > 0
+ doc = OSM::API.new.get_xml_doc
+
+ Segment.find(segmentids).each do |segment|
+ doc.root << segment.to_xml_node
+ end
+
+ render :text => doc.to_s, :content_type => "text/xml"
+ else
+ render :nothing => true, :status => :bad_request
+ end
+ end