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import webkitpy.tool.bot.irc_command as irc_command

from webkitpy.common.net.irc.ircbot import IRCBotDelegate
from webkitpy.common.thread.threadedmessagequeue import ThreadedMessageQueue


class _IRCThreadTearoff(IRCBotDelegate):
    def __init__(self, password, message_queue, wakeup_event):
        self._password = password
        self._message_queue = message_queue
        self._wakeup_event = wakeup_event

    # IRCBotDelegate methods

    def irc_message_received(self, nick, message):
        self._message_queue.post([nick, message])
        self._wakeup_event.set()

    def irc_nickname(self):
        return "sheriffbot"

    def irc_password(self):
        return self._password


class SheriffIRCBot(object):
    def __init__(self, tool, sheriff):
        self._tool = tool
        self._sheriff = sheriff
        self._message_queue = ThreadedMessageQueue()

    def irc_delegate(self):
        return _IRCThreadTearoff(self._tool.irc_password,
                                 self._message_queue,
                                 self._tool.wakeup_event)

    def process_message(self, message):
        (nick, request) = message
        tokenized_request = request.strip().split(" ")
        if not tokenized_request:
            return
        command = irc_command.commands.get(tokenized_request[0])
        args = tokenized_request[1:]
        if not command:
            # Give the peoples someone to talk with.
            command = irc_command.Eliza
            args = tokenized_request
        response = command().execute(nick, args, self._tool, self._sheriff)
        if response:
            self._tool.irc().post(response)

    def process_pending_messages(self):
        (messages, is_running) = self._message_queue.take_all()
        for message in messages:
            self.process_message(message)