// NextOp is part of the resolver.Resolver interface.
func (s *commandsResolver) NextOp(
localState resolver.LocalState,
remoteState remotestate.Snapshot,
opFactory operation.Factory,
) (operation.Operation, error) {
if len(remoteState.Commands) == 0 {
return nil, resolver.ErrNoOperation
}
id := remoteState.Commands[0]
op, err := opFactory.NewCommands(s.commands.GetCommand(id))
if err != nil {
return nil, err
}
commandCompleted := func() {
s.commands.RemoveCommand(id)
s.commandCompleted(id)
}
return &commandCompleter{op, commandCompleted}, nil
}