import urllib.request
import socket
import re

#settings
SERVER = 'irc.freenode.net'
CHANNEL = input('Channel name: ')
PASSWORD = input('password: ')
USER_NAME = 'melonlord'
NICK = 'melon_bot'

irc = socket.socket(socket.AF_INET, socket.SOCK_STREAM)     #defines the socket
print("connecting to: " + SERVER)
irc.connect((SERVER, 6667))    #connects to the server
irc.send(bytes('PASS %s\r\n' % PASSWORD, 'UTF-8'))
irc.send(bytes('USER %s %s melon :%s\r\n' % (USER_NAME, NICK, NICK), 'UTF-8'))     #user authentication
irc.send(bytes('NICK %s\r\n' % NICK, 'UTF-8'))      #sets nick
irc.send(bytes('JOIN %s\r\n' % CHANNEL, 'UTF-8'))       #join the chan
irc.send(bytes('PRIVMSG %s :Greetings %s o/\r\n' % (CHANNEL, CHANNEL), 'UTF-8'))        #entrance message

def getWeather(city):
    try:
        f = urllib.request.urlopen('http://api.openweathermap.org/data/2.5/weather?q=' + city)
    except:
        return 1
    s = f.read().decode("UTF-8")
    match = re.search('.*?temp":(.*?),.*', s)
    if match:
        return match.group(1)
    else:
        return 0

while 1:    #da loop
    data = irc.recv(1024).decode("UTF-8")       #receive the text
    print(data)     #print text to console

    if data.find('PING') != -1:     #check if PING is found
        irc.send(bytes('PONG ' + data.split() [1] + '\r\n', 'UTF-8'))       #PONG

    #quit
    m = re.search('^:([^ ]+)!([^ ]+)@([^ ]+)melonlord PRIVMSG %s :.mel quit\s*$' % CHANNEL, data)
    if m:
        irc.send(bytes('PRIVMSG %s :Goodbye :3\r\n' % CHANNEL, 'UTF-8'))
        irc.send(bytes('QUIT\r\n', 'UTF-8'))
        break

    #weather
    m = re.search('^:([^ ]+)!([^ ]+)@([^ ]+) PRIVMSG %s :.(weather|w) (.*)$' % CHANNEL, data)
    if m:
        temp = getWeather(m.group(5))
        if temp != 0 and temp != 1:
            fah = (float(temp) - 273.15) * 1.800 + 32.00
            cel = float(temp) - 273.15
            temp = 'It is ' + str(round(fah, 1)) + '°F(' + str(round(cel, 1)) + '°C) in ' + m.group(5)
        elif temp == 0:
            temp = 'invalid entry'
        else:
            temp = 'page access denied - please request your entry again'
        irc.send(bytes('PRIVMSG %s :%s\r\n' % (CHANNEL, temp), 'UTF-8'))

    #greeting response
    m = re.search('^:([^ ]+)!([^ ]+)@([^ ]+) PRIVMSG %s :((h|H)i|(h|H)ey|(h|H)ello|(h|H)ey(a|o)|(y|Y)o|(s|S)up) melon_bot\s*$' % CHANNEL, data)
    if m:
        if m.group(1) != 'Melonus':
            greeter = re.search(':(.+?)!', data)
            irc.send(bytes('PRIVMSG %s :Hey %s o/\r\n' % (CHANNEL, greeter.group(1)), 'UTF-8'))
        else:
            irc.send(bytes('PRIVMSG %s :Hello Master Melon :)\r\n' % CHANNEL, 'UTF-8'))

    #ACTION response
    m = re.search('^:([^ ]+)!([^ ]+)@([^ ]+) PRIVMSG %s :\x01ACTION (.*?) melon_bot\s*\x01$' % CHANNEL, data)
    if m:
        irc.send(bytes('PRIVMSG %s :Thanks %s for the %s\r\n' % (CHANNEL, m.group(1), m.group(4)), 'UTF-8'))