event.rb

require 'image'
require 'movie'
require 'event_registry'
class HelioEvent 
    
  EVENT_STARTTIME_KEY = "event_starttime"
  EVENT_ENDTIME_KEY = "event_endtime"
  EVENT_ARCHIVEDATE_KEY = "kb_archivdate"
  EVENT_UID_KEY = "kb_archivid"
  EVENT_BBOX_KEY = "hpc_bbox"
    
  class << self # Class Methods
    attr_accessor :images, :movies
    
    def has_movie(klass)
      @movies ||= []
      @movies << klass
    end

    def has_image(klass)
      @images ||= []
      @images << klass
    end
    
    def inherited(klass)
      EventRegistry.register_class(klass)
    end
    
    def short_name
      @shortname
    end
    
    def shortname(name)
      @shortname = name
    end
  end
  
  attr_accessor :start_date, :end_date, :archive_date, :duration_seconds, :event_coords, :event_boundingbox, :uid
  
  def initialize(data)
    
    if(data[EVENT_BBOX_KEY].nil?); raise "Missing hpc_coords";end
    
    @uid                = data[EVENT_UID_KEY].gsub(/ivo:\/\/helio-informatics\.org\//, "")
    @start_date         = Time.parse(data[EVENT_STARTTIME_KEY])
    @end_date           = Time.parse(data[EVENT_ENDTIME_KEY])
    #@archive_date       = Time.parse(data[EVENT_ARCHIVEDATE_KEY])
    @duration_seconds   = (@end_date - @start_date).to_i
    @event_boundingbox  = data[EVENT_BBOX_KEY]
    @movies             = self.class.movies
    @images             = self.class.images 
    
  end
    
  def warm_cache?
    not @images.nil?
  end
  
  def make_movie?
    not @movies.nil?
  end
  
  def urls(type)
    urls = []
    type.each do |url| 
      url.types.each do |urltype|
        urls << { :url => url.url_from_event(self,urltype), :type => urltype }
      end
    end
    urls
  end
  
  def image_urls
    urls(@images)
  end
  
  def movie_urls
    urls(@movies)
  end
  
end