#!/usr/bin/env ruby

require 'pry'
require 'csv'

INFO = Struct.new(:gln, :fax, :fon) 
INFOS = []

def write_file
  CSV.open("company_fax_fon.csv", "w+") do |csv|
    csv << ["gln", "fax", "fon"]
    INFOS.each do |info|
      if (info.fax && !info.fax.empty?) ||
        (info.fon && !info.fon.empty?) 
        csv << [info.gln, info.fax, info.fon]
      end
    end
  end
end

def strip_160(string)
  return nil unless string
  return nil if string.length == 1 && string[0].ord == 160
  return string[0..-2] if string.length > 1 && string[-1].ord == 160
  string
end

def read_log
  lines = IO.readlines('gelöschte_telefon_nummern.log')
  lines.each do |line|
    info = INFO.new
    m = /update (\d+).+@fon\=\[\\\"([^\\\"\]]+)/.match(line)
    if m
      info.gln = m[1]
      info.fon = strip_160(m[2])
    end
    m = /update (\d+).+@fax\=\[\\\"([^\\\"\]]+)/.match(line)
    if m
      info.gln = m[1].strip
      info.fax = strip_160(m[2])
    end
    INFOS << info
  end
end

read_log
write_file