google_core.rb

module GoogleCore


  ICAL = 0
  SYNC_TWO_WAYS = 0
  SYNC_TO_GCAL  = 1
  SYNC_TO_BB    = 2

  ### Google Calendar Syncing Options
  IGNORE_CHANGES   = 0
  APPLY_TO_BB      = 1
  RECREATE_ON_GCAL = 2
  APPLY_TO_BB_AND_RECREATE = 3
  
  def google_busy
    return nil if !google_cal
    tz = company.time_zone.to_s.length > 0 ? company.time_zone : get_time_zone
    client  = company.conf_connection.init_client
    if client
      service = client.discovered_api('calendar', 'v3')

      begin
        result  = client.execute(
          :api_method => service.events.list,
          :parameters => {'calendarId' => google_cal, 'timeZone' => tz, 'timeMin' => (Time.now - 10.days).utc.iso8601, 'timeMax' => 2.months.from_now.utc.iso8601 },
          :headers => {'Content-Type' => 'application/json'})
      rescue Exception => e
      end

      if result && result.body
        body = JSON.parse(result.body.force_encoding("utf-8"))
        items = (body['items'] && body['items'].any?) ? body['items'] : []


        if company.conf_connection.email["gcal_sync_options"] != IGNORE_CHANGES
          check_for_moved_bookings items
        end

        out = ""
        items.each_with_index do |item, i|
          next if item['transparency'] && item['transparency'] == 'transparent'
          if item['summary'].to_s.include?('BBID:')
            next
          end
          if item['start'] && item['start']['dateTime'] && item['start']['dateTime'] != ''
            d1 = item['start']['dateTime'].to_datetime
            d2 = item['end']['dateTime'].to_datetime
            out += d1.utc.strftime("%Y%m%dT%H%M%SZ") + "-" + d2.utc.strftime("%Y%m%dT%H%M%SZ") + "\n"
            out += "-" + item['summary'].to_s.gsub(/\n/, " ") + "\n"
          end
        end # each end
      end

      return out
    end

  end


  def google_freebusy
    return nil if !google_cal
    tz = company.time_zone.to_s.length > 0 ? company.time_zone : get_time_zone
    client  = company.conf_connection.init_client
    if client
      service = client.discovered_api('calendar', 'v3')
      result  = client.execute(
        :api_method => service.freebusy.query,
        :body_object => { :timeMin => (Time.now - 10.days).utc.iso8601,
          :timeMax => 2.months.from_now.utc.iso8601, # 2 years at the moment - could make it configuarable later! ... had to limit it to 2 months as over than that google will error with message The requested time range is too long
          :items => [{id: google_cal}]
          },
          :headers => {'Content-Type' => 'application/json'})

      body = JSON.parse(result.body.force_encoding("utf-8"))
      busy_days = body['calendars'][google_cal]['errors'] ? [] : body['calendars'][google_cal]['busy']

      out = ""
      busy_days.each_with_index do |day, i|
        d1 = day['start'].to_datetime
        d2 = day['end'].to_datetime
        out += d1.utc.strftime("%Y%m%dT%H%M%SZ") + "-" + d2.utc.strftime("%Y%m%dT%H%M%SZ") + "\n"
      end
      return out
    end
  end
  def google_add_event start_date_time=(Time.now + 2.days).utc.iso8601, end_date_time=(Time.now + 2.days).utc.iso8601, summary='', body=nil, location='', url=nil
    return {} if company.conf_connection.email["gcal_sync"] == SYNC_TO_BB
    client  = company.conf_connection.init_client
    return {} unless client
    service = client.discovered_api('calendar', 'v3')
    
    # HACK FOR AVENUES CUSTOM GCAL TITLE
    if MULTI_SITE && (MultiSite.respond_to?("get_shard") && (MultiSite.get_shard == "mtus_avenues_dev" || MultiSite.get_shard == "mtus_avenues_staging" || MultiSite.get_shard == "mtus_avenues_prod"))
      summary = "#{summary}"
      body = summary unless body
    else
      summary = "BBID: #{summary}"
      body = summary unless body
    end

    begin
      result  = client.execute(
        :api_method => service.events.insert,
        :parameters => {'calendarId' => self.google_cal},
        :body_object => {
          :start => {:dateTime => DateTime.parse(start_date_time).utc.iso8601},
          :end   => {:dateTime => DateTime.parse(end_date_time).utc.iso8601},
          #:recurrence => ['RRULE:FREQ=WEEKLY;UNTIL=20110701T100000-07:00'],
          #'attendees' => [:email=>'a@bc.com'],
          :location => location,
          :summary => summary,
          :description => body,
          :source =>{:url=>url, :title=>"Edit Appointment on BookingBug"}
          },
        :headers => {'Content-Type' => 'application/json'})
      return body = JSON.parse(result.body.force_encoding("utf-8"))
    rescue Exception => error
      # Airbrake exception
      Airbrake.notify(error,
        :backtrace => error.backtrace,
        :error_class => error.class,
        :error_message => error.message,
        :parameters => "#{start_date_time} - #{end_date_time} - #{summary} - #{location} - #{url} - #{self.google_cal}"
      )
    end
    return {}

  end

  def google_edit_event event_id, start_date_time=(Time.now + 2.days).utc.iso8601, end_date_time=(Time.now + 2.days).utc.iso8601, summary='', location=''
    return false if company.conf_connection.email["gcal_sync"] == SYNC_TO_BB
    client  = company.conf_connection.init_client
    return false unless client
    service = client.discovered_api('calendar', 'v3')
    google_delete_event event_id
    
    # HACK FOR AVENUES CUSTOM GCAL TITLE
    if MULTI_SITE && (MultiSite.respond_to?("get_shard") && (MultiSite.get_shard == "mtus_avenues_dev" || MultiSite.get_shard == "mtus_avenues_staging" || MultiSite.get_shard == "mtus_avenues_prod"))
      summary = "#{summary}"
    else
      summary = "BBID: #{summary}"
    end

    begin
      result  = client.execute(
        :api_method => service.events.insert,
        :parameters => {'calendarId' => self.google_cal, 'eventId' => event_id},
        :body_object => {
          :start => {:dateTime => DateTime.parse(start_date_time).utc.iso8601},
          :end   => {:dateTime => DateTime.parse(end_date_time).utc.iso8601},
          #:recurrence => ['RRULE:FREQ=WEEKLY;UNTIL=20110701T100000-07:00'],
          #'attendees' => [:email=>'a@bc.com'],
          :location => location,
          :summary => summary
          },
        :headers => {'Content-Type' => 'application/json'})
      return JSON.parse result.body.force_encoding("utf-8")
    rescue Exception => error

      # Airbrake exception
      Airbrake.notify(error,
        :backtrace => error.backtrace,
        :error_class => error.class,
        :error_message => error.message
      )
    end

  end

  def google_delete_event event_id
    return [] if company.conf_connection.email["gcal_sync"] == SYNC_TO_BB
    client  = company.conf_connection.init_client
    return [] unless client
    service = client.discovered_api('calendar', 'v3')

    begin
      result  = client.execute(
        :api_method => service.events.delete,
        :parameters => {'calendarId' => self.google_cal, 'eventId' => event_id},
        :headers => {'Content-Type' => 'application/json'})
      return result.body.force_encoding("utf-8") if result && result.body
    rescue Exception => error
      # Airbrake exception
      Airbrake.notify(error,
        :backtrace => error.backtrace,
        :error_class => error.class,
        :error_message => error.message
      )
    end

  end

  def google_all_events calendar_id
    client  = init_client
    return [] unless client
    service = client.discovered_api('calendar', 'v3')
    result  = client.execute(
      :api_method => service.events.list,
      :parameters => {'calendarId' => calendar_id},
      :headers => {'Content-Type' => 'application/json'})
    return JSON.parse(result.body.force_encoding("utf-8")) if result && result.body
  end


end