Method: Redwood::ThreadSet#add_message

Defined in:
lib/sup/thread.rb

#add_message(message) ⇒ Object

the heart of the threading code



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# File 'lib/sup/thread.rb', line 339

def add_message message
  el = @messages[message.id]
  return if el.message # we've seen it before

  el.message = message
  oldroot = el.root

  ## link via references:
  prev = nil
  message.refs.each do |ref_id|
    ref = @messages[ref_id]
    link prev, ref if prev
    prev = ref
  end
  link prev, el, true if prev

  ## link via in-reply-to:
  message.replytos.each do |ref_id|
    ref = @messages[ref_id]
    link ref, el, true
    break # only do the first one
  end

  root = el.root

  ## new root. need to drop old one and put this one in its place
  if root != oldroot && oldroot.thread
    oldroot.thread.drop oldroot
    oldroot.thread = nil
  end

  key =
    if thread_by_subj?
      Message.normalize_subj root.subj
    else
      root.id
    end

  ## check to see if the subject is still the same (in the case
  ## that we first added a child message with a different
  ## subject)
  if root.thread
    unless @threads[key] == root.thread
      if @threads[key]
        root.thread.empty!
        @threads[key] << root
        root.thread = @threads[key]
      else
        @threads[key] = root.thread
      end
    end
  else
    thread = @threads[key]
    thread << root
    root.thread = thread
  end

  ## last bit
  @num_messages += 1
end