metamaps--metamaps/app/helpers/topics_helper.rb

module TopicsHelper
  ## this one is for building our custom JSON autocomplete format for typeahead
  def autocomplete_array_json(topics)
    temp = []
    topics.each do |t|
      topic = {}
      topic['id'] = t.id
      topic['label'] = t.name
      topic['value'] = t.name
      topic['description'] = t.desc ? t.desc.truncate(70) : '' # make this return matched results
      topic['type'] = t.metacode.name
      topic['typeImageURL'] = t.metacode.icon
      topic['permission'] = t.permission
      topic['mapCount'] = t.maps.count
      topic['synapseCount'] = t.synapses.count
      topic['originator'] = t.user.name
      topic['originatorImage'] = t.user.image.url(:thirtytwo)
      topic['rtype'] = 'topic'
      topic['inmaps'] = t.inmaps
      topic['inmapsLinks'] = t.inmapsLinks

      temp.push topic
    end
    temp
  end

  # find all nodes in any given nodes network
  def network(node, array, count)
    # recurse starting with a node to find all connected nodes and return an array of topics that constitutes the starting nodes network

    # if the array of nodes is empty initialize it
    array = [] if array.nil?

    # add the node to the array
    array.push(node)

    return array if count == 0

    count -= 1

    # check if each relative is already in the array and if not, call the network function again
    if !node.relatives.empty?
      if (node.relatives - array).empty?
        return array
      else
        (node.relatives - array).each do |relative|
          array = (array | network(relative, array, count))
        end
        return array
      end

    elsif node.relatives.empty?
      return array
    end
  end
end