#!/usr/bin/env python
"""
clock.py - Phenny Clock Module
Copyright 2008-9, Sean B. Palmer, inamidst.com
Licensed under the Eiffel Forum License 2.

http://inamidst.com/phenny/
"""

import re, math, time, urllib, locale, socket, struct, datetime
from decimal import Decimal as dec
from tools import deprecated

TimeZones = {'KST': 9, 'CADT': 10.5, 'EETDST': 3, 'MESZ': 2, 'WADT': 9, 
             'EET': 2, 'MST': -7, 'WAST': 8, 'IST': 5.5, 'B': 2, 
             'MSK': 3, 'X': -11, 'MSD': 4, 'CETDST': 2, 'AST': -4, 
             'HKT': 8, 'JST': 9, 'CAST': 9.5, 'CET': 1, 'CEST': 2, 
             'EEST': 3, 'EAST': 10, 'METDST': 2, 'MDT': -6, 'A': 1, 
             'UTC': 0, 'ADT': -3, 'EST': -5, 'E': 5, 'D': 4, 'G': 7, 
             'F': 6, 'I': 9, 'H': 8, 'K': 10, 'PDT': -7, 'M': 12, 
             'L': 11, 'O': -2, 'MEST': 2, 'Q': -4, 'P': -3, 'S': -6, 
             'R': -5, 'U': -8, 'T': -7, 'W': -10, 'WET': 0, 'Y': -12, 
             'CST': -6, 'EADT': 11, 'Z': 0, 'GMT': 0, 'WETDST': 1, 
             'C': 3, 'WEST': 1, 'CDT': -5, 'MET': 1, 'N': -1, 'V': -9, 
             'EDT': -4, 'UT': 0, 'PST': -8, 'MEZ': 1, 'BST': 1, 
             'ACS': 9.5, 'ATL': -4, 'ALA': -9, 'HAW': -10, 'AKDT': -8, 
             'AKST': -9, 
             'BDST': 2}

TZ1 = {
 'NDT': -2.5, 
 'BRST': -2, 
 'ADT': -3, 
 'EDT': -4, 
 'CDT': -5, 
 'MDT': -6, 
 'PDT': -7, 
 'YDT': -8, 
 'HDT': -9, 
 'BST': 1, 
 'MEST': 2, 
 'SST': 2, 
 'FST': 2, 
 'CEST': 2, 
 'EEST': 3, 
 'WADT': 8, 
 'KDT': 10, 
 'EADT': 13, 
 'NZD': 13, 
 'NZDT': 13, 
 'GMT': 0, 
 'UT': 0, 
 'UTC': 0, 
 'WET': 0, 
 'WAT': -1, 
 'AT': -2, 
 'FNT': -2, 
 'BRT': -3, 
 'MNT': -4, 
 'EWT': -4, 
 'AST': -4, 
 'EST': -5, 
 'ACT': -5, 
 'CST': -6, 
 'MST': -7, 
 'PST': -8, 
 'YST': -9, 
 'HST': -10, 
 'CAT': -10, 
 'AHST': -10, 
 'NT': -11, 
 'IDLW': -12, 
 'CET': 1, 
 'MEZ': 1, 
 'ECT': 1, 
 'MET': 1, 
 'MEWT': 1, 
 'SWT': 1, 
 'SET': 1, 
 'FWT': 1, 
 'EET': 2, 
 'UKR': 2, 
 'BT': 3, 
 'ZP4': 4, 
 'ZP5': 5, 
 'ZP6': 6, 
 'WST': 8, 
 'HKT': 8, 
 'CCT': 8, 
 'JST': 9, 
 'KST': 9, 
 'EAST': 10, 
 'GST': 10, 
 'NZT': 12, 
 'NZST': 12, 
 'IDLE': 12
}

TZ2 = {
 'ACDT': 10.5, 
 'ACST': 9.5, 
 'ADT': 3, 
 'AEDT': 11, # hmm
 'AEST': 10, # hmm
 'AHDT': 9, 
 'AHST': 10, 
 'AST': 4, 
 'AT': 2, 
 'AWDT': -9, 
 'AWST': -8, 
 'BAT': -3, 
 'BDST': -2, 
 'BET': 11, 
 'BST': -1, 
 'BT': -3, 
 'BZT2': 3, 
 'CADT': -10.5, 
 'CAST': -9.5, 
 'CAT': 10, 
 'CCT': -8, 
 # 'CDT': 5, 
 'CED': -2, 
 'CET': -1, 
 'CST': 6, 
 'EAST': -10, 
 # 'EDT': 4, 
 'EED': -3, 
 'EET': -2, 
 'EEST': -3, 
 'EST': 5, 
 'FST': -2, 
 'FWT': -1, 
 'GMT': 0, 
 'GST': -10, 
 'HDT': 9, 
 'HST': 10, 
 'IDLE': -12, 
 'IDLW': 12, 
 # 'IST': -5.5, 
 'IT': -3.5, 
 'JST': -9, 
 'JT': -7, 
 'KST': -9, 
 'MDT': 6, 
 'MED': -2, 
 'MET': -1, 
 'MEST': -2, 
 'MEWT': -1, 
 'MST': 7, 
 'MT': -8, 
 'NDT': 2.5, 
 'NFT': 3.5, 
 'NT': 11, 
 'NST': -6.5, 
 'NZ': -11, 
 'NZST': -12, 
 'NZDT': -13, 
 'NZT': -12, 
 # 'PDT': 7, 
 'PST': 8, 
 'ROK': -9, 
 'SAD': -10, 
 'SAST': -9, 
 'SAT': -9, 
 'SDT': -10, 
 'SST': -2, 
 'SWT': -1, 
 'USZ3': -4, 
 'USZ4': -5, 
 'USZ5': -6, 
 'USZ6': -7, 
 'UT': 0, 
 'UTC': 0, 
 'UZ10': -11, 
 'WAT': 1, 
 'WET': 0, 
 'WST': -8, 
 'YDT': 8, 
 'YST': 9, 
 'ZP4': -4, 
 'ZP5': -5, 
 'ZP6': -6
}

TZ3 = {
   'AEST': 10, 
   'AEDT': 11
}

# TimeZones.update(TZ2) # do these have to be negated?
TimeZones.update(TZ1)
TimeZones.update(TZ3)

r_local = re.compile(r'\([a-z]+_[A-Z]+\)')

@deprecated
def f_time(self, origin, match, args): 
   """Returns the current time."""
   tz = match.group(2) or 'GMT'

   # Personal time zones, because they're rad
   if hasattr(self.config, 'timezones'): 
      People = self.config.timezones
   else: People = {}

   if People.has_key(tz): 
      tz = People[tz]
   elif (not match.group(2)) and People.has_key(origin.nick): 
      tz = People[origin.nick]

   TZ = tz.upper()
   if len(tz) > 30: return

   if (TZ == 'UTC') or (TZ == 'Z'): 
      msg = time.strftime('%Y-%m-%dT%H:%M:%SZ', time.gmtime())
      self.msg(origin.sender, msg)
   elif r_local.match(tz): # thanks to Mark Shoulsdon (clsn)
      locale.setlocale(locale.LC_TIME, (tz[1:-1], 'UTF-8'))
      msg = time.strftime("%A, %d %B %Y %H:%M:%SZ", time.gmtime())
      self.msg(origin.sender, msg)
   elif TimeZones.has_key(TZ): 
      offset = TimeZones[TZ] * 3600
      timenow = time.gmtime(time.time() + offset)
      msg = time.strftime("%a, %d %b %Y %H:%M:%S " + str(TZ), timenow)
      self.msg(origin.sender, msg)
   elif tz and tz[0] in ('+', '-') and 4 <= len(tz) <= 6: 
      timenow = time.gmtime(time.time() + (int(tz[:3]) * 3600))
      msg = time.strftime("%a, %d %b %Y %H:%M:%S " + str(tz), timenow)
      self.msg(origin.sender, msg)
   else: 
      try: t = float(tz)
      except ValueError: 
         import os, re, subprocess
         r_tz = re.compile(r'^[A-Za-z]+(?:/[A-Za-z_]+)*$')
         if r_tz.match(tz) and os.path.isfile('/usr/share/zoneinfo/' + tz): 
            cmd, PIPE = 'TZ=%s date' % tz, subprocess.PIPE
            proc = subprocess.Popen(cmd, shell=True, stdout=PIPE)
            self.msg(origin.sender, proc.communicate()[0])
         else: 
            error = "Sorry, I don't know about the '%s' timezone." % tz
            self.msg(origin.sender, origin.nick + ': ' + error)
      else: 
         timenow = time.gmtime(time.time() + (t * 3600))
         msg = time.strftime("%a, %d %b %Y %H:%M:%S " + str(tz), timenow)
         self.msg(origin.sender, msg)
f_time.commands = ['t']
f_time.name = 't'
f_time.example = '.t UTC'

def beats(phenny, input): 
   """Shows the internet time in Swatch beats."""
   beats = ((time.time() + 3600) % 86400) / 86.4
   beats = int(math.floor(beats))
   phenny.say('@%03i' % beats)
beats.commands = ['beats']
beats.priority = 'low'

def divide(input, by): 
   return (input / by), (input % by)

def yi(phenny, input): 
   """Shows whether it is currently yi or not."""
   quadraels, remainder = divide(int(time.time()), 1753200)
   raels = quadraels * 4
   extraraels, remainder = divide(remainder, 432000)
   if extraraels == 4: 
      return phenny.say('Yes! PARTAI!')
   else: phenny.say('Not yet...')
yi.commands = ['yi']
yi.priority = 'low'

def tock(phenny, input): 
   """Shows the time from the USNO's atomic clock."""
   u = urllib.urlopen('http://tycho.usno.navy.mil/cgi-bin/timer.pl')
   info = u.info()
   u.close()
   phenny.say('"' + info['Date'] + '" - tycho.usno.navy.mil')
tock.commands = ['tock']
tock.priority = 'high'

def npl(phenny, input): 
   """Shows the time from NPL's SNTP server."""
   # for server in ('ntp1.npl.co.uk', 'ntp2.npl.co.uk'): 
   client = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
   client.sendto('\x1b' + 47 * '\0', ('ntp1.npl.co.uk', 123))
   data, address = client.recvfrom(1024)
   if data: 
      buf = struct.unpack('B' * 48, data)
      d = dec('0.0')
      for i in range(8):
         d += dec(buf[32 + i]) * dec(str(math.pow(2, (3 - i) * 8)))
      d -= dec(2208988800L)
      a, b = str(d).split('.')
      f = '%Y-%m-%d %H:%M:%S'
      result = datetime.datetime.fromtimestamp(d).strftime(f) + '.' + b[:6]
      phenny.say(result + ' - ntp1.npl.co.uk')
   else: phenny.say('No data received, sorry')
npl.commands = ['npl']
npl.priority = 'high'

if __name__ == '__main__': 
   print __doc__.strip()