Class: Ical

Inherits:
ActiveRecord::Base
  • Object
show all
Includes:
ActionView::Helpers::TextHelper
Defined in:
app/models/ical.rb

Constant Summary collapse

@@calendars_path = 
Radiant::Config["event_calendar.icals_path"]

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.check_refreshments ⇒ Object 



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# File 'app/models/ical.rb', line 123

def self.check_refreshments
  find(:all).each do |i|
    i.refresh if i.refresh_automatically? && i.needs_refreshment?
  end
end

.refresh_all ⇒ Object 



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# File 'app/models/ical.rb', line 129

def self.refresh_all
  find(:all).each do |i|
    i.refresh 
  end
  return true
end

Instance Method Details

#filename ⇒ Object 



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# File 'app/models/ical.rb', line 93

def filename
  File.join filepath, ics_file
end

#filepath ⇒ Object 



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# File 'app/models/ical.rb', line 89

def filepath
  File.join RAILS_ROOT, "public", ics_path
end

#ics_file ⇒ Object 



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# File 'app/models/ical.rb', line 101

def ics_file
  "#{self.calendar.slug}.ics"
end

#ics_path ⇒ Object 



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# File 'app/models/ical.rb', line 97

def ics_path
  File.join @@calendars_path, self.calendar.category
end

#needs_refreshment? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'app/models/ical.rb', line 119

def needs_refreshment?
  last_refresh_date.nil? || Time.now > last_refresh_date + refresh_interval
end

#parse_file(thisfile = filename) ⇒ Object 



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# File 'app/models/ical.rb', line 44

def parse_file(thisfile=filename)
  affected = []
  begin
    Ical.transaction do
      self.last_refresh_count = 0
      count = { :created => 0, :updated => 0, :deleted => 0 }
      uuids_seen = []
      File.open(thisfile, "r") do |file|
        components = RiCal.parse(file)
        cal = components.first
        cal.events.each do |cal_event|
          if event = Event.find_by_uuid(cal_event.uid)
            if cal_event.dtstamp > event.updated_at
              affected.push event.update_from(cal_event) 
              count[:updated] += 1
            else
            end
          else
            event = Event.create_from(cal_event)
            event.site = self.calendar.site if event.respond_to? :site=
            self.calendar.events << event
            event.save!
            count[:created] += 1
          end
          uuids_seen.push(cal_event.uid)
        end
      end
      self.last_refresh_count = uuids_seen.length
      self.last_refresh_date = Time.now.utc
      self.save!
      
      self.calendar.events.except_these(uuids_seen).each do |event| 
        event.destroy 
        count[:deleted] += 1
      end
      response = [:created, :updated, :deleted].collect { |counter| 
        "#{pluralize(count[counter], 'event')} #{counter}. "
      }.join('')
    end
  rescue => error
    logger.error "RiCal parse error with: #{self.calendar.name}: #{error}."
    raise
  end 
end

#refresh ⇒ Object 



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# File 'app/models/ical.rb', line 15

def refresh
  retrieve_file
  updated = parse_file
  logger.info self.calendar.category + "/" + self.calendar.name + " - iCalendar subscription refreshed on " + Time.now.strftime("%m/%d at %H:%M")
  updated
end

#refresh_automatically? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'app/models/ical.rb', line 115

def refresh_automatically?
  refresh_interval.nil? || refresh_interval.to_i != 0
end

#refresh_interval ⇒ Object

I’ve changed this to make the ical refresh decision a simple yes or no and to make the refresh interval a global value



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# File 'app/models/ical.rb', line 111

def refresh_interval
  (Radiant::Config['event_calendar.refresh_interval'] || 3600).to_i.seconds
end

#retrieve_file ⇒ Object 



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# File 'app/models/ical.rb', line 22

def retrieve_file
  File.makedirs filepath
  begin
    uri = URI.parse(url)
    if authenticated?
      http = Net::HTTP.new(uri.host, uri.port)
      http.use_ssl = uri.scheme == 'https'
      req = Net::HTTP::Get.new(uri.path)
      req.basic_auth username, password
      response = http.request(req)
    else
      response = Net::HTTP.get_response(uri)
    end
    File.open(filename, "w") do |file|
      file << response.body
    end
  rescue => error
    logger.error "iCal url or file error with: #{self.calendar.name} - #{url} -> (#{filename}): #{error}."
    raise
  end
end

#to_ics ⇒ Object 



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# File 'app/models/ical.rb', line 105

def to_ics
  File.join "", ics_path, ics_file
end