#!/usr/bin/python3

# The MIT License (MIT)
#
# Copyright © 2020-2025 pacman64
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the “Software”), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.


# pycalc.pyw
#
# PYthon CALCulator is a GUI app which live-evaluates the python expression
# currently in its single-line input, re-running it as it changes.


from json import dumps

import math
from math import \
    acos, acosh, asin, asinh, atan, atan2, atanh, ceil, comb, \
    copysign, cos, cosh, degrees, dist, e, erf, erfc, exp, expm1, \
    fabs, factorial, floor, fmod, frexp, fsum, gamma, gcd, hypot, inf, \
    isclose, isfinite, isinf, isnan, isqrt, lcm, ldexp, lgamma, log, \
    log10, log1p, log2, modf, nan, nextafter, perm, pi, pow, prod, \
    radians, remainder, sin, sinh, sqrt, tan, tanh, tau, trunc, ulp
try:
    from math import cbrt, exp2
except Exception:
    pass

from random import \
    betavariate, choice, choices, expovariate, gammavariate, gauss, \
    getrandbits, getstate, lognormvariate, normalvariate, paretovariate, \
    randbytes, randint, random, randrange, sample, seed, setstate, \
    shuffle, triangular, uniform, vonmisesvariate, weibullvariate

from statistics import \
    bisect_left, bisect_right, fmean, \
    geometric_mean, harmonic_mean, mean, median, \
    median_grouped, median_high, median_low, mode, multimode, pstdev, \
    pvariance, quantiles, stdev, variance
try:
    from statistics import \
        correlation, covariance, linear_regression, mul, reduce
except Exception:
    pass

from tkinter import Tk, Entry, Label, RIGHT, LEFT, EventType
from typing import Callable, Iterable, Any


# some convenience aliases to various funcs from the python stdlib
geomean = geometric_mean
harmean = harmonic_mean
sd = stdev
popsd = pstdev
var = variance
popvar = pvariance
randbeta = betavariate
randexp = expovariate
randgamma = gammavariate
randlognorm = lognormvariate
randnorm = normalvariate
randweibull = weibullvariate

# some occasionally-useful values
kb = 1024
mb = 1024 * kb
gb = 1024 * mb
tb = 1024 * gb
pb = 1024 * tb
mole = 602214076000000000000000
mol = mole


def check_shortcuts(event: EventType) -> None:
    char = event.char
    if char == '':
        return

    # quit when esc key is pressed
    if ord(char) == 27:
        win.quit()


def update_result(event: EventType) -> None:
    try:
        expr = input.get()
        if expr == '':
            return

        # square brackets are easier to type and are valid math
        expr = expr.replace('[', '(').replace(']', ')')
        res = eval(expr)
        if isinstance(res, int) or isinstance(res, float):
            output['text'] = '= {:,}'.format(res)
        else:
            output['text'] = res
    except Exception as e:
        output['text'] = f'= {e}'


win = Tk()
win.title('Calculate')
input = Entry(font=20, width=35)
input.pack(side=LEFT, padx=5)
input.bind('<KeyPress>', check_shortcuts)
input.bind('<KeyRelease>', update_result)
input.focus()
output = Label(text='esc quits', font=20)
output.pack(side=RIGHT, padx=10, pady=5)
win.mainloop()