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import os
import sys
from datetime import datetime

def main():
  for afile in os.listdir(os.getcwd()):
    fileBreak = afile.split('.')
    extension = fileBreak[1]

    if extension == "3gp":
      datePhoneBreak = fileBreak[0].split('p')
      phoneNum = datePhoneBreak[1]
      dateFin = datePhoneBreak[0]
      dateFin = dateFin[2:16]

      # format phone number (remove extension)
      if phoneNum[0] == '+':
        phoneNum = phoneNum[3:]
      elif phoneNum[0] == '0':
        phoneNum = phoneNum[1:]

      #format date - strptime, strftime
      dateobj = datetime.strptime(dateFin,'%Y%m%d%H%M%S')
      dateInName = dateobj.strftime('%d_%b_%Y_%I_%M_%p')

      #pick contact name
      contactName = ""
      datafile = open("phonenumbers.txt","r")
      for line in datafile.readlines():
        if(line.find(phoneNum) >= 0):
        lineBreak = line.split(':')
        contactName = lineBreak[1]
      datafile.close()
      contactName = contactName.strip()

      final_name = contactName+'_'+dateInName+'.'+extension
      # FINAl STEP - RENAMING...
      os.rename(afile,final_name)
    else:
      print "other extension."
      # do nothing. Some other extension

main()