#!/usr/bin/python

import re
import socket
import sys
import tempfile
import uxnrepl

server = "irc.libera.chat"
nick = b"uxnbot"
channel = b"#uxn"

sandbox = tempfile.mkdtemp(prefix='uxnrepl')

irc = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

def send(msg):
    print('>>> %r' % msg)
    irc.send(msg + b'\r\n')

def recv():
    msg = irc.recv(2040)
    print('<<< %r' % msg)
    return msg

print("connecting to: %s" % server)

irc.connect((server, 6667))
send(b"USER %s %s %s :bot for testing uxntal code" % (nick, nick, nick))
send(b"NICK %s" % nick)
#send("PRIVMSG nickserv :iNOOPE\r\n")
send(b"JOIN %s" % channel)

ping_re = re.compile(br'PING (.+)$')
chan_msg_re = re.compile(br':([^!]+)![^ ]+ PRIVMSG ([^ ]+) :' + nick + br': (.*)$')
priv_msg_re = re.compile(br':([^!]+)![^ ]+ PRIVMSG ' + nick + br' :(.*)$')

ignored = {b'rst', b'wst', b''}

def evaluate(msg):
    output = uxnrepl.execute(msg, sandbox=sandbox)
    lines = [s.strip() for s in output.split(b'\n')]
    interesting = [s for s in lines if s not in ignored]
    result = b' | '.join(interesting)
    print('*** executing %r gave %r -> %r -> %r' % (msg, output, interesting, result))
    return result

while True:
    #text = irc.recv(2040)
    #print(text)
    text = recv()

    m = ping_re.match(text)
    if m:
        send(b'PONG %s' % m.group(1))
        continue

    m = chan_msg_re.match(text)
    if m and m.group(2) == channel:
        user = m.group(1)
        msg = m.group(3).strip()
        result = evaluate(msg)
        send(b'PRIVMSG %s :%s: %s' % (channel, user, result))
        continue

    m = priv_msg_re.match(text)
    if m:
        user = m.group(1)
        msg = m.group(2).strip()
        result = evaluate(msg)
        send(b'PRIVMSG %s :%s' % (user, result))
        continue

# message from user in channel:
# b':d_m!~d_m@user/d-m/x-5109880 PRIVMSG #uxn :uxnbot: hello\r\n'

# keep alive:
# b'PING :mercury.libera.chat\r\n'

# private message
# b':d_m!~d_m@user/d-m/x-5109880 PRIVMSG uxnbot :hello\r\n'