import_and_export_telephones

KEY_PREFIX = 'cn:campaign:201838:'.freeze
def import_telephones(filename, overwrite = false)
  IO.readlines(filename).each do |line|
    telephone = line.strip
    next if telephone.blank?
    key = "#{KEY_PREFIX}#{telephone}"
    if overwrite || $redis.get(key).nil?
      puts "import #{telephone}"
      $redis.set key, 0
    else
      puts "skip #{telephone}"
    end
  end
  nil
end

def export_telephones(filename)
  File.open(filename, "w") do |file|
    $redis.keys("#{KEY_PREFIX}*").each do |key|
      customer_id = $redis.get(key)
      telephone = key.sub("#{KEY_PREFIX}", '')
      file.puts "#{telephone}, #{customer_id}"
    end
  end
  nil
end