-
- way_ids = []
- ways.each do |way|
- if way.visible?
- doc.root << way.to_xml_node(visible_nodes, changeset_cache, user_display_name_cache)
- way_ids << way.id
- end
- end
-
- relations = Relation.nodes(visible_nodes.keys).visible +
- Relation.ways(way_ids).visible
-
- # we do not normally return the "other" partners referenced by an relation,
- # e.g. if we return a way A that is referenced by relation X, and there's
- # another way B also referenced, that is not returned. But we do make
- # an exception for cases where an relation references another *relation*;
- # in that case we return that as well (but we don't go recursive here)
- relations += Relation.relations(relations.collect(&:id)).visible
-
- # this "uniq" may be slightly inefficient; it may be better to first collect and output
- # all node-related relations, then find the *not yet covered* way-related ones etc.
- relations.uniq.each do |relation|
- doc.root << relation.to_xml_node(changeset_cache, user_display_name_cache)
- end
-
- response.headers["Content-Disposition"] = "attachment; filename=\"map.osm\""
-
- render :xml => doc.to_s
- end
-
- # Get a list of the tiles that have changed within a specified time
- # period
- def changes
- zoom = (params[:zoom] || "12").to_i
-
- if params.include?(:start) && params.include?(:end)
- starttime = Time.parse(params[:start])
- endtime = Time.parse(params[:end])
- else
- hours = (params[:hours] || "1").to_i.hours
- endtime = Time.now.getutc
- starttime = endtime - hours
- end
-
- if zoom >= 1 && zoom <= 16 &&
- endtime > starttime && endtime - starttime <= 24.hours
- mask = (1 << zoom) - 1
-
- tiles = Node.where(:timestamp => starttime..endtime).group("maptile_for_point(latitude, longitude, #{zoom})").count
-
- doc = OSM::API.new.get_xml_doc
- changes = XML::Node.new "changes"
- changes["starttime"] = starttime.xmlschema
- changes["endtime"] = endtime.xmlschema
-
- tiles.each do |tile, count|
- x = (tile.to_i >> zoom) & mask
- y = tile.to_i & mask
-
- t = XML::Node.new "tile"
- t["x"] = x.to_s
- t["y"] = y.to_s
- t["z"] = zoom.to_s
- t["changes"] = count.to_s
-
- changes << t
- end
-
- doc.root << changes
-
- render :xml => doc.to_s
- else
- render :plain => "Requested zoom is invalid, or the supplied start is after the end time, or the start duration is more than 24 hours", :status => :bad_request
- end
- end
-
- # External apps that use the api are able to query the api to find out some
- # parameters of the API. It currently returns:
- # * minimum and maximum API versions that can be used.
- # * maximum area that can be requested in a bbox request in square degrees
- # * number of tracepoints that are returned in each tracepoints page
- def capabilities
- @database_status = database_status
- @api_status = api_status
- @gpx_status = gpx_status
- end
-
- # External apps that use the api are able to query which permissions
- # they have. This currently returns a list of permissions granted to the current user:
- # * if authenticated via OAuth, this list will contain all permissions granted by the user to the access_token.
- # * if authenticated via basic auth all permissions are granted, so the list will contain all permissions.
- # * unauthenticated users have no permissions, so the list will be empty.
- def permissions
- @permissions = if current_token.present?
- ClientApplication.all_permissions.select { |p| current_token.read_attribute(p) }
- elsif current_user
- ClientApplication.all_permissions
- else
- []
- end