Class: GCal4Ruby::Service

Inherits:
Object
  • Object
show all
Defined in:
lib/gcal4ruby/service.rb

Overview

The service class is the main handler for all direct interactions with the Google Calendar API. A service represents a single user account. Each user account can have multiple calendars, so you’ll need to find the calendar you want from the service, using the Calendar#find class method.

Usage

  1. Authenticate service = Service.new service.authenticate(“[email protected]”, “password”)

  2. Get Calendar List calendars = service.calendars

Constant Summary collapse

@@calendar_list_feed = 
'www.google.com/calendar/feeds/default/owncalendars/full'

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(attributes = {}, service = nil) ⇒ Service

Accepts an optional attributes hash for initialization values



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# File 'lib/gcal4ruby/service.rb', line 56

def initialize(attributes = {}, service = nil)
  # If the user has specified the type of GData4Ruby class they want, instantiate it
  if(service != nil)
    @gdata_service = GData4Ruby.const_get(service).new(attributes)
  end
  # Otherwise use the default service
  @gdata_service ||= GData4Ruby::Service.new(attributes)
  attributes.each do |key, value|
    if self.respond_to?("#{key}=")
      self.send("#{key}=", value)
    end
  end    
  @check_public ||= true
  @account ||= "default"
  @debug ||= false
  log("Check Public: #{check_public}")
end

Instance Attribute Details

#account ⇒ Object

Convenience attribute contains the currently authenticated account name



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# File 'lib/gcal4ruby/service.rb', line 48

def 
  @account
end

#check_public ⇒ Object

Determines whether GCal4Ruby ensures a calendar is public. Setting this to false can increase speeds by 50% but can cause errors if you try to do something to a calendar that is not public and you don’t have adequate permissions



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# File 'lib/gcal4ruby/service.rb', line 53

def check_public
  @check_public
end

#gdata_service ⇒ Object

The type of GData4Ruby service we want to use



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# File 'lib/gcal4ruby/service.rb', line 45

def gdata_service
  @gdata_service
end

Instance Method Details

#authenticate(options = {}) ⇒ Object

The authenticate method passes an for the service to use to access Google’s servers

If authentication succeeds, returns true, otherwise raises the AuthenticationFailed error.



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# File 'lib/gcal4ruby/service.rb', line 93

def authenticate(options = {})
  if not options.has_key?(:service)
    options[:service] = 'cl'
  end
  @gdata_service.authenticate(options)
end

#calendars ⇒ Object

Returns an array of Calendar objects for each calendar associated with the authenticated account.



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# File 'lib/gcal4ruby/service.rb', line 118

def calendars
  ret = send_request(GData4Ruby::Request.new(:get, create_url(@@calendar_list_feed + "?fields=entry(@gd:*,id,title)"), nil, {"max-results" => "10000"}))
  cals = []
  REXML::Document.new(ret.body).root.elements.each("entry"){}.map do |entry|
    entry = GData4Ruby::Utils.add_namespaces(entry)
    cal = Calendar.new(self, {:debug => debug})
    cal.load(entry.to_s)
    cals << cal
  end
  return cals
end

#create_url(path) ⇒ Object

Builds a URL



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# File 'lib/gcal4ruby/service.rb', line 144

def create_url(path)
  return @gdata_service.create_url(path)
end

#debug ⇒ Object 



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# File 'lib/gcal4ruby/service.rb', line 74

def debug
  return @debug
end

#debug=(value) ⇒ Object 



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# File 'lib/gcal4ruby/service.rb', line 78

def debug=(value)
  @debug=value
  @gdata_service.debug = value
end

#default_event_feed ⇒ Object 



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# File 'lib/gcal4ruby/service.rb', line 87

def default_event_feed
  return create_url("www.google.com/calendar/feeds/#{@account}/private/full")
end

#events ⇒ Object

Returns an array of Event objects for each event in this account



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# File 'lib/gcal4ruby/service.rb', line 131

def events
 ret = send_request(GData4Ruby::Request.new(:get, default_event_feed, nil, {"max-results" => "10000"}))
  events = []
  REXML::Document.new(ret.body).root.elements.each("entry"){}.map do |entry|
    entry = GData4Ruby::Utils.add_namespaces(entry)
    event = Event.new(self, {:debug => debug})
    event.load(entry.to_s)
    events << event
  end
  return events
end

#log(string) ⇒ Object 



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# File 'lib/gcal4ruby/service.rb', line 83

def log(string)
  puts string if debug
end

#reauthenticate(options = {}) ⇒ Object

Helper function to reauthenticate to a new Google service without having to re-set credentials.



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# File 'lib/gcal4ruby/service.rb', line 101

def reauthenticate(options = {})
  if not options.has_key?(:service)
    options[:service] = 'cl'
  end
  @gdata_service.reauthenticate(options)
end

#send_request(request) ⇒ Object

Passes a request along from a GData4Ruby GDataObject to a GData4Ruby Base (Service) to be invoked



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# File 'lib/gcal4ruby/service.rb', line 109

def send_request(request)
  if not @gdata_service.authenticated?
     raise GData4Ruby::NotAuthenticated
  end
  @gdata_service.send_request(request)
end

#to_iframe(cals, params = {}, colors = {}) ⇒ Object

Helper function to return a formatted iframe embedded google calendar. Parameters are:

  1. cals: either an array of calendar ids, or :all for all calendars, or :first for the first (usally default) calendar

  2. params: a hash of parameters that affect the display of the embedded calendar. Accepts any parameter that the google iframe recognizes. Here are the most common:

height:: the height of the embedded calendar in pixels
width:: the width of the embedded calendar in pixels
title:: the title to display
bgcolor:: the background color.  Limited choices, see google docs for allowable values.
showTitle:: set to '0' to hide the title
showDate:: set to '0' to hide the current date
showNav:: set to '0 to hide the navigation tools
showPrint:: set to '0' to hide the print icon
showTabs:: set to '0' to hide the tabs
showCalendars:: set to '0' to hide the calendars selection drop down
showTz:: set to '0' to hide the timezone selection
border:: the border width in pixels
dates:: a range of dates to display in the format of 'yyyymmdd/yyyymmdd'.  Example: 20090820/20091001
privateKey:: use to display a private calendar.  You can find this key under the calendar settings pane of the Google Calendar website.
ctz:: The timezone to convert event times to

  1. colors: a hash of calendar ids as key and color values as associated hash values. Example: => ‘#7A367A’



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# File 'lib/gcal4ruby/service.rb', line 167

def to_iframe(cals, params = {}, colors = {})
  params[:height] ||= "600"
  params[:width] ||= "600"
  params[:title] ||= (self. ? self. : '')
  params[:bgcolor] ||= "#FFFFFF"
  params[:border] ||= "0"
  params.each{|key, value| params[key] = CGI::escape(value)}
  output = "#{params.to_a.collect{|a| a.join("=")}.join("&")}&"
  
  if cals.is_a?(Array)
    for c in cals
      output += "src=#{c}&"
      if colors and colors[c]
        output += "color=%23#{colors[c].gsub("#", "")}&"
      end
    end
  elsif cals == :all
    cal_list = calendars()
    for c in cal_list
      output += "src=#{c.id}&"
    end
  elsif cals == :first
    cal_list = calendars()
    output += "src=#{cal_list[0].id}&"
  end
      
  "<iframe src='#{create_url("www.google.com/calendar/embed?"+output)}' style='#{params[:border]} px solid;' width='#{params[:width]}' height='#{params[:height]}' frameborder='#{params[:border]}' scrolling='no'></iframe>"
end