from tkinter import Tk, Button, Label, StringVar
from misc.parser import *
from misc.tokenizer import *

class Window(Tk):

    def __init__(self):
        Tk.__init__(self)
        self.title("test")
        self.geometry("400x500")
        self.resizable(False, False)

        self.layout()

    def layout(self):
        #TEXT
        self.text = StringVar(value="")
        self.label = Label(textvariable=self.text, background="#eaeaea", borderwidth=2, relief="solid", font=("Arial", 20))
        self.label.pack(fill="x")#.place(x=0, y=0)

        #BOUTTONS
        bouttons = ["1", "2", "3", "+", "-", "4", "5", "6", "*", "/", "7", "8", "9", "^", "sqrt", "EVAL", "0", "DEL", "CLEAR", "exp", "(", ")", ".", "sin", "cos"]
        col = 0
        row = 0
        for b in bouttons:
            if col == 5:
                col = 0
                row += 1

            cmd = None
            if b == "EVAL":
                cmd = self.evalue
            elif b == "DEL":
                cmd = self.delete
            elif b == "CLEAR":
                cmd = self.clear
            else:
                cmd = lambda text = b: self.write(str(text))

            Button(self, text=b, width=5, height=1, command=cmd).place(x=40+50*col, y=250+30*row)

            col += 1
    
    def write(self, text):
        current = self.text.get()
        self.text.set(current + text)

    def delete(self):
        current = self.text.get()
        self.text.set(current[:-1])

    def clear(self):
        self.text.set("")
    
    def evalue(self):
        try:
            exp = npi2tree(shutting_yard(tokenize(self.text.get())))
            self.text.set(exp.evalue())
        except:
            self.text.set("Erreur")