import subprocess
from bot import *


def isfloat(value):
    try:
        float(value)
        return True
    except ValueError:
        return False


async def rpninp(self, chan, nick, msg):
    if chan not in self.rpnhist:
        self.rpnhist[chan] = [0]
    try:
        msg = msg.replace("+", " + ")
        msg = msg.replace("a", " a ")
        # msg = msg.replace('-',' - ')
        msg = msg.replace("s", " s ")
        msg = msg.replace("\\", " \\ ")
        msg = msg.replace("*", " * ")
        msg = msg.replace("x", " x ")
        msg = msg.replace("m", " m ")
        msg = msg.replace("/", " / ")
        msg = msg.replace("d", " d ")
        msg = msg.replace("^", " ^ ")
        msg = msg.replace("e", " e ")
        for m in msg.split():
            self.rpnhist[chan].append(0)
            del self.rpnhist[chan][15:]
            if isfloat(m):
                self.rpnhist[chan].insert(0, float(m))
                continue
            elif m == "+" or m == "a":
                self.rpnhist[chan][0] = self.rpnhist[chan][0] + self.rpnhist[chan].pop(
                    1
                )
            elif m == "-" or m == "s":
                self.rpnhist[chan][0] = (
                    self.rpnhist[chan].pop(1) - self.rpnhist[chan][0]
                )
            elif m == "\\":
                self.rpnhist[chan].insert(0, self.rpnhist[chan][0])
            elif m == "*" or m == "x" or m == "m":
                self.rpnhist[chan][0] = (
                    self.rpnhist[chan].pop(1) * self.rpnhist[chan][0]
                )
            elif m == "/" or m == "d":
                try:
                    self.rpnhist[chan][0] = (
                        self.rpnhist[chan].pop(1) / self.rpnhist[chan][0]
                    )
                except ZeroDivisionError:
                    self.rpnhist[chan][0] = float("NaN")
            elif m == "^" or m == "e":
                self.rpnhist[chan][0] = (
                    self.rpnhist[chan].pop(1) ** self.rpnhist[chan][0]
                )
            elif msg == "p":
                pass  # just dont do anything lol
            elif msg == "r":
                if chan in self.rpnprint:
                    await self.message(
                        chan, str(self.rpnhist[chan])
                    )
                return
            else:
                return
    except OverflowError:
        if chan in self.rpnprint:
            await self.message(chan, "no u ur numbers are too big chonk")
        return
    if chan in self.rpnprint:
        await self.message(chan, str(self.rpnhist[chan][0]))


async def rpntinp(self, chan, nick, msg):
    if chan in self.rpnprint:

        await rpninp(self, chan, nick, msg)
    else:
        self.rpnprint.append(chan)
        await rpninp(self, chan, nick, msg)
        self.rpnprint.remove(chan)


async def rpntoggle(self, chan, nick, msg):
    if chan in self.rpnprint:
        self.rpnprint.remove(chan)
        await self.message(chan, "rpn outputting has been disabled")
    else:
        self.rpnprint.append(chan)
        await self.message(chan, "rpn outputting has been enabled")


async def init(self):
    # self.help['rpn'] = ['rpn <inp> - simple reverse polish notation calculator (more)', 'it has an alias of . so you can just do {}. <inp>, and if enabled it will also parse floats and functions as input. there are 4 functions, add (+|a), subtract (-|s), multiply (*|x|m), and devide (/|d), and p to print register 0'.format(self.prefix)]
    shared.commands["rpn"] = rpntinp
    shared.commands["."] = rpntinp
    shared.rawm["rpn"] = rpninp
    shared.commands["rt"] = rpntoggle
    # self.help['rt'] = ['rt - toggle the output of rpn calculatons into the channel', 'rpn is cool']

    self.rpnhist = {}

    self.rpnprint = []