module Fog
  module Compute
    class Google
      class Mock
        def insert_snapshot(snap_name)
          Fog::Mock.not_implemented
        end
      end

      class Real
        def insert_snapshot(disk_name, zone_name, project=@project, opts={})
          # This is unfortunate, since we might be called from 2 contexts
          # 1. disk.snapshot <-- here validation of disk_name is not needed
          # 2. snapshot.create <-- here we must validate the disk_name
          #
          # Validation would involve 'get'ing the disk by that name. This is
          # redundant (and expensive) for case (1) which is likely the common
          # codepath. So we won't do it.

          api_method = @compute.disks.create_snapshot

          parameters = {
            'disk'    => disk_name,
            'zone'    => zone_name,
            'project' => @project,
          }

          snap_name = opts.delete('name')
          raise ArgumentError.new('Must specify snapshot name') unless snap_name
          body_object = { 'name' => snap_name }

          # Merge in any remaining options (description)
          body_object.merge!(opts)

          request(api_method, parameters, body_object)
        end
      end
    end
  end
end