#!/usr/bin/env python

import dbus
import re
import sys
import time
import urllib

obj = dbus.SessionBus().get_object("im.pidgin.purple.PurpleService", "/im/pidgin/purple/PurpleObject")
purple = dbus.Interface(obj, "im.pidgin.purple.PurpleInterface")

class CheckedObject:
    def __init__(self, obj):
        self.obj = obj

    def __getattr__(self, attr):
        return CheckedAttribute(self, attr)

class CheckedAttribute:
    def __init__(self, cobj, attr):
        self.cobj = cobj
        self.attr = attr

    def __call__(self, *args):
        # Redirect stderr to suppress the printing of an " Introspect error"
        # message if nothing is listening on the bus.  We print a friendly
        # error message ourselves.
        real_stderr = sys.stderr
        sys.stderr = None
        result = self.cobj.obj.__getattr__(self.attr)(*args)
        sys.stderr = real_stderr

# This can be useful for debugging.
#        if (result == 0):
#            print "Error: " + self.attr + " " + str(args) + " returned " + str(result)

        return result

cpurple = CheckedObject(purple)

def extendlist(list, length, fill):
    if len(list) < length:
        return list + [fill] * (length - len(list))
    else:
        return list

def convert(value):
    try:
        return int(value)
    except:
        return value

def findaccount(protocolname, accountname=""):
    # prefer connected accounts
    account = cpurple.PurpleAccountsFindConnected(accountname, protocolname)
    if (account != 0):
	return account

    # try to get any account and connect it
    account = cpurple.PurpleAccountsFindAny(accountname, protocolname)
    if (account == 0):
        print "No matching account found."
	sys.exit(1)

    purple.PurpleAccountSetStatusVargs(account, "online", 1)
    purple.PurpleAccountConnect(account)
    return account

def goim(account, screenname, message=None):
    # XXX: 1 == PURPLE_CONV_TYPE_IM
    conversation = cpurple.PurpleConversationNew(1, account, screenname)
    if message:
        purple.PurpleConvSendConfirm(conversation, message)

def gochat(account, params, message=None):
    connection = cpurple.PurpleAccountGetConnection(account)
    purple.ServJoinChat(connection, params)

    if message != None:
    	for i in range(20):
            # XXX: 2 == PURPLE_CONV_TYPE_CHAT
            conversation = purple.PurpleFindConversationWithAccount(2, params.get("channel", params.get("room")), account)
            if conversation:
                purple.PurpleConvSendConfirm(conversation, message)
                break
            else:
                time.sleep(0.5)

def addbuddy(account, screenname, group="", alias=""):
    cpurple.PurpleBlistRequestAddBuddy(account, screenname, group, alias)


def aim(uri):
    protocol = "prpl-aim"
    match = re.match(r"^aim:([^?]*)(\?(.*))", uri)
    if not match:
        print "Invalid aim URI: %s" % uri
        return

    command = urllib.unquote_plus(match.group(1))
    paramstring = match.group(3)
    params = {}
    if paramstring:
        for param in paramstring.split("&"):
            key, value = extendlist(param.split("=", 1), 2, "")
            params[key] = urllib.unquote_plus(value)
    accountname = params.get("account", "")
    screenname = params.get("screenname", "")

    account = findaccount(protocol, accountname)

    if command.lower() == "goim":
        goim(account, screenname, params.get("message"))
    elif command.lower() == "gochat":
        gochat(account, params)
    elif command.lower() == "addbuddy":
        addbuddy(account, screenname, params.get("group", ""))

def gg(uri):
    protocol = "prpl-gg"
    match = re.match(r"^gg:(.*)", uri)
    if not match:
        print "Invalid gg URI: %s" % uri
        return

    screenname = urllib.unquote_plus(match.group(1))
    account = findaccount(protocol)
    goim(account, screenname)

def icq(uri):
    protocol = "prpl-icq"
    match = re.match(r"^icq:([^?]*)(\?(.*))", uri)
    if not match:
        print "Invalid icq URI: %s" % uri
        return

    command = urllib.unquote_plus(match.group(1))
    paramstring = match.group(3)
    params = {}
    if paramstring:
        for param in paramstring.split("&"):
            key, value = extendlist(param.split("=", 1), 2, "")
            params[key] = urllib.unquote_plus(value)
    accountname = params.get("account", "")
    screenname = params.get("screenname", "")

    account = findaccount(protocol, accountname)

    if command.lower() == "goim":
        goim(account, screenname, params.get("message"))
    elif command.lower() == "gochat":
        gochat(account, params)
    elif command.lower() == "addbuddy":
        addbuddy(account, screenname, params.get("group", ""))

def irc(uri):
    protocol = "prpl-irc"
    match = re.match(r"^irc:(//([^/]*)/)?([^?]*)(\?(.*))?", uri)
    if not match:
        print "Invalid irc URI: %s" % uri
        return

    server = urllib.unquote_plus(match.group(2)) or ""
    target = match.group(3) or ""
    query = match.group(5) or ""

    modifiers = {}
    if target:
        for modifier in target.split(",")[1:]:
            modifiers[modifier] = True

    isnick = modifiers.has_key("isnick")

    paramstring = match.group(5)
    params = {}
    if paramstring:
        for param in paramstring.split("&"):
            key, value = extendlist(param.split("=", 1), 2, "")
            params[key] = urllib.unquote_plus(value)

    account = findaccount(protocol)

    if (target != ""):
        if (isnick):
            goim(account, urllib.unquote_plus(target.split(",")[0]), params.get("msg"))
	else:
            channel = urllib.unquote_plus(target.split(",")[0])
            if channel[0] != "#":
                channel = "#" + channel
            gochat(account, {"server": server, "channel": channel, "password": params.get("key", "")}, params.get("msg"))

def msnim(uri):
    protocol = "prpl-msn"
    match = re.match(r"^msnim:([^?]*)(\?(.*))", uri)
    if not match:
        print "Invalid msnim URI: %s" % uri
        return

    command = urllib.unquote_plus(match.group(1))
    paramstring = match.group(3)
    params = {}
    if paramstring:
        for param in paramstring.split("&"):
            key, value = extendlist(param.split("=", 1), 2, "")
            params[key] = urllib.unquote_plus(value)
    screenname = params.get("contact", "")

    account = findaccount(protocol)

    if command.lower() == "chat":
        goim(account, screenname)
    elif command.lower() == "add":
        addbuddy(account, screenname)

def myim(uri):
	protocol = "prpl-myspace"
	print "TODO: send uri: ", uri
	assert False, "Not implemented"

def sip(uri):
    protocol = "prpl-simple"
    match = re.match(r"^sip:(.*)", uri)
    if not match:
        print "Invalid sip URI: %s" % uri
        return

    screenname = urllib.unquote_plus(match.group(1))
    account = findaccount(protocol)
    goim(account, screenname)

def xmpp(uri):
    protocol = "prpl-jabber"
    match = re.match(r"^xmpp:(//([^/?#]*)/?)?([^?#]*)(\?([^;#]*)(;([^#]*))?)?(#(.*))?", uri)
    if not match:
        print "Invalid xmpp URI: %s" % uri
        return

    tmp = match.group(2)
    if (tmp):
        accountname = urllib.unquote_plus(tmp)
    else:
        accountname = ""

    screenname = urllib.unquote_plus(match.group(3))

    tmp = match.group(5)
    if (tmp):
        command = urllib.unquote_plus(tmp)
    else:
        command = ""

    paramstring = match.group(7)
    params = {}
    if paramstring:
        for param in paramstring.split(";"):
            key, value = extendlist(param.split("=", 1), 2, "")
            params[key] = urllib.unquote_plus(value)

    account = findaccount(protocol, accountname)

    if command.lower() == "message":
        goim(account, screenname, params.get("body"))
    elif command.lower() == "join":
        room, server = screenname.split("@")
        gochat(account, {"room": room, "server": server})
    elif command.lower() == "roster":
        addbuddy(account, screenname, params.get("group", ""), params.get("name", ""))
    else:
        goim(account, screenname)

def ymsgr(uri):
    protocol = "prpl-yahoo"
    match = re.match(r"^ymsgr:([^?]*)(\?([^&]*)(&(.*))?)", uri)
    if not match:
        print "Invalid ymsgr URI: %s" % uri
        return

    command = urllib.unquote_plus(match.group(1))
    screenname = urllib.unquote_plus(match.group(3))
    paramstring = match.group(5)
    params = {}
    if paramstring:
        for param in paramstring.split("&"):
            key, value = extendlist(param.split("=", 1), 2, "")
            params[key] = urllib.unquote_plus(value)

    account = findaccount(protocol)

    if command.lower() == "sendim":
        goim(account, screenname, params.get("m"))
    elif command.lower() == "chat":
        gochat(account, {"room": screenname})
    elif command.lower() == "addfriend":
        addbuddy(account, screenname)


def main(argv=sys.argv):
    if len(argv) != 2:
        print "Usage: %s URI" % argv[0]
        print "Example: %s \"xmpp:romeo@montague.net?message\"" % argv[0]
        return

    uri = argv[1]
    type = uri.split(":")[0]

    try:
        if type == "aim":
            aim(uri)
        elif type == "gg":
            gg(uri)
        elif type == "icq":
            icq(uri)
        elif type == "irc":
            irc(uri)
        elif type == "msnim":
            msnim(uri)
        elif type == "myim":
            myim(uri)
        elif type == "sip":
            sip(uri)
        elif type == "xmpp":
            xmpp(uri)
        elif type == "ymsgr":
            ymsgr(uri)
        else:
            print "Unknown protocol: %s" % type
    except dbus.dbus_bindings.DBusException:
        print "ERROR: Is there a libpurple-powered client (e.g. Pidgin or Finch) running?"


if __name__ == "__main__":
    main()