module LabMetadata

  def LabMetadata.build_people_metadata
    members = $db["lab/members"]

    members.each do |name, data|
      data["link_relative"] = not(data.has_key? "link")
      data["name"] = name
      page = "/people/#{name.downcase.gsub(/ /, "_").gsub(/[^a-z0-9A-Z_]/, "")}.html"
      unless data.has_key? "link"
        data["link"] = page
      end
        data["page"] = page
    end
  end

  def LabMetadata.create_people_pages
  	known_pages = 
	  	GemSmith::all_outputs.
	  		delete_if { |x| not /people\/.*\.html$/ =~ x }

    $db["lab/members"].each do |name, data|
    	unless known_pages.include? data["page"]
    		GemSmith::add_file_string(data["page"], "#{name} hasn't written anything yet.")
    	end
    	GemSmith::metadata_for(data["page"]).merge!({
    		title: name,
    		name: name
  		}.merge(data))
    end
  end

  def LabMetadata.link_for(person)
  	data = $db["lab/members"][person]
  	if data.nil? then person else "<a class=\"lab_member\" href=\"#{GemSmith::root_path(data["link"])}\">#{person}</a>" end
	end

  def LabMetadata.publications_for(person)
  	$db["publications"].
  		where { |pub| pub["authors"].include? person }
  end

  def LabMetadata.members_on_project(project)
    $db["lab/members"].values.
      where { |m| m.fetch("projects", []).include? project }.
      map { |m| m["name"] }
  end

end