Method: ICFS::Email::Imap#fetch

Defined in:
lib/icfs/email/imap.rb

#fetch ⇒ Object

Fetch messages



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# File 'lib/icfs/email/imap.rb', line 81

def fetch()

  # open & login
  imap = ::Net::IMAP.new(@cfg[:address], @cfg[:port],
      @cfg[:enable_ssl], nil, false)
  imap.(@cfg[:username], @cfg[:password])
  @log.info('IMAP: open and login')

  # mailbox
  if @cfg[:mailbox]
    imap.select(::Net::IMAP.encode_utf7(@cfg[:mailbox]))
    @log.info('IMAP: mailbox selected: %s' % @cfg[:mailbox])
  else
    @log.error('IMAP: no mailbox specified')
    mbxs = imap.list('', '*')
    @log.info('IMAP: mailbox list: %s' % mbxs.map{|mb| mb.name }.join(', '))
    return
  end

  while true
    # fetch messages
    uids = imap.uid_search(@cfg[:keys])
    @log.debug('IMAP: %d messages found' % uids.size)
    uids.each do |uid|
      fd = imap.uid_fetch(uid, ['RFC822'])[0]
      @log.debug('IMAP: message fetched')
      msg = ::Mail.new(fd.attr['RFC822'])
      @core.receive(msg)
      if @cfg[:delete]
        imap.uid_store(uid, "+FLAGS", [:Deleted])
        @log.debug('IMAP: message deleted')
      end
    end
    if @cfg[:delete]
      imap.expunge
      @log.debug('IMAP: expunged')
    end

    # wait IDLE until new mail
    if @cfg[:idle_time]
      @log.debug('IMAP: starting IDLE')
      imap.idle(@cfg[:idle_time]) do |resp|
        if resp.is_a?(::Net::IMAP::UntaggedResponse) && resp.name == "EXISTS"
          @log.debug('IMAP: new mail, IDLE done')
          imap.idle_done
        end
      end
      @log.debug('IMAP: exited IDLE')

    # or we just run once
    else
      @log.debug('IMAP: fetch completed')
      break
    end
  end

ensure
  if defined?(imap) && imap && !imap.disconnected?
    imap.disconnect
    @log.info('IMAP: disconnected')
  end
end