#!/usr/bin/python

import os, sys, signal
from time import time
import socket, select
import pynotify

if len(sys.argv) < 2:
    sys.stderr.write("usage: cidnotify SERVER\n")
    sys.exit(1)
server = sys.argv[1]

pynotify.init("cidnotify")

sk = None
notif = None
curnum = None
lastring = None
t2n = None
buf = ""
namebuf = ""
name = None
actab = []

signal.signal(signal.SIGCHLD, signal.SIG_IGN)

try:
    acfile = open(os.getenv("HOME") + "/phone/actab")
except IOError:
    pass
else:
    for line in acfile:
        pos = line.find(" ")
        if pos < 0: continue
        actab += [(line[:pos], line[pos + 1:].strip())]
    acfile.close()

for family, socktype, proto, canonname, sockaddr in socket.getaddrinfo(server, 5001, 0, socket.SOCK_STREAM):
    try:
        sk = socket.socket(family, socktype, proto)
        sk.connect(sockaddr)
    except socket.error:
        sk = None
        continue
    else:
        break

if sk is None:
    sys.stderr.write("cidnotify: could not connect to " + server + "\n");
    sys.exit(1)

def popen(*cmd):
    rfd, wfd = os.pipe()
    pid = os.fork()
    if pid == 0:
        os.dup2(wfd, 1)
        os.close(rfd)
        os.close(wfd)
        os.execvp(cmd[0], cmd)
        sys.exit(127)
    os.close(wfd)
    return pid, rfd

def closet2n():
    global t2n
    if t2n is not None:
        try:
            os.kill(t2n[0], signal.SIGINT)
        except:
            pass
        os.close(t2n[1])
        t2n = None

def close():
    global notif, curnum, lastring, name
    closet2n()
    if notif is not None:
        notif.close()
        notif = None
    curnum = None
    lastring = None
    name = None

def findac(num):
    for ac, acn in actab:
        if num[:len(ac)] == ac:
            return acn
    return None

def notiftext():
    if curnum == "B10":
        return "<i>Undisclosed number</i>"
    text = "<b>Number</b>: " + curnum + "\n"
    acn = findac(curnum)
    if acn is not None:
        text += "<b>Area code</b>: " + acn + "\n"
    else:
        text += "<b>Area code</b>: <i>Unknown</i>\n"
    if name is None:
        text += "<b>Name</b>: <i>Looking up...</i>\n"
    elif name == "":
        text += "<b>Name</b>: <i>No hits</i>\n"
    else:
        text += "<b>Name</b>: " + name + "\n"
    return text.strip()

def newnum(num):
    global curnum, t2n, notif, lastring
    close()
    curnum = num
    notif = pynotify.Notification("Phone call", notiftext())
    notif.set_timeout(0)
    notif.show()
    lastring = time()
    if curnum.isdigit():
        t2n = popen("tel2name", num)

try:
    while True:
        fds = [sk.fileno()]
        if t2n is not None:
            fds += [t2n[1]]
        if lastring is not None:
            timeout = lastring + 10 - time()
        else:
            timeout = None
        fds = reduce(lambda s, l: s | set(l),
                     select.select(fds, [], fds, timeout),
                     set())

        if sk.fileno() in fds:
            ret = sk.recv(100)
            if ret == "": sys.exit(0)
            buf += ret
            lines = buf.split("\n")
            buf = lines[-1]
            for line in lines[:-1]:
                if line[0] == "N":
                    newnum(line[1:])
                elif line[0] == "R":
                    if lastring is not None:
                        lastring = time()

        if t2n is not None and t2n[1] in fds:
            ret = os.read(t2n[1], 100)
            namebuf += ret
            if ret == "":
                closet2n()
                name = namebuf.strip()
                namebuf = ""
                if notif is not None:
                    notif.update("Phone call", notiftext())
                    notif.show()

        if lastring is not None and lastring + 10 < time():
            close()

except KeyboardInterrupt:
    pass