#
# Copyright 2015 (c) Anna Schumaker.
#
from . import api
from . import auth
from . import users
from datetime import datetime
import textwrap
import re



def __text_parse_uid(text):
    res = text
    for uid in re.findall("<@(.*?)>", text):
        uid = uid.split("|")[0]
        user = slack.users.info(uid)
        res = re.sub("<@%s(.*?)>" % uid, "@%s" % user.user(), res)
    return res



class Message:
    def __init__(self, json):
        self.__ts   = json["ts"]
        self.__time = datetime.fromtimestamp(float(self.__ts))
        self.__user = users.info(json.get("user", None))
        self.__text = [ json["text"].encode("utf-8").decode("latin-1") ]

    def __lt__(self, other):
        return self.__time < other.__time

    def __str__(self):
        lines = []
        for line in self.__text:
            line   = __text_parse_uid(line)
            lines += [ "" ] + textwrap.wrap(line)
        text = "\n	".join(lines)
        time = self.__time.strftime("%I:%M:%S %p")
        return "\n%s | %s:\n%s\n" % (time, self.__user, text)

    def ts(self):
        return self.__ts

    def user(self):
        return self.__user

    def merge(self, msg):
        self.__text += msg.__text
        self.__ts    = msg.__ts



def postMessage(channel, text):
    api.call("chat.postMessage", token = auth.token(), channel = channel,
             text = text, as_user = True, parse = "full")