from tkinter import Tk, Button, Label, StringVar, Entry
from misc.parser import *
from misc.tokenizer import *
from lib.File import File_chaine as File

class Window(Tk):

    def __init__(self):
        Tk.__init__(self)
        self.title("test")
        self.geometry("500x600")
        self.resizable(False, False)

        self.layout()

    def layout(self):
        #TEXT
        self.text = StringVar(value="")
        self.label = Label(textvariable=self.text, background="#eaeaea", font=("Arial", 20))
        self.label.pack(fill="x")

        self.input = Entry(textvariable=self.text)
        self.input.pack(fill="x")

        Label(text="Pensez aux parenthèses et à utiliser des espaces avec EVAL_NPI", font=("Arial", 11)).pack(fill='x')

        #BOUTTONS
        bouttons = ["1", "2", "3", "+", "-", "4", "5", "6", "*", "/", "7", "8", "9", "^", "sqrt", "EVAL", "0", "DEL", "CLEAR", "exp", "(", ")", ".", "sin", "cos", "EVAL_NPI", "ESPACE"]
        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
            elif b == "EVAL_NPI":
                cmd = self.evalue_npi
            elif b == "ESPACE":
                cmd = lambda: self.write(" ")
            else:
                cmd = lambda text = b: self.write(str(text))

            Button(self, text=b, width=6, height=1, command=cmd).place(x=10+100*col, y=100+40*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_npi(self):
        try:
            tokens = tokenize(self.text.get())
            file = File()
            for token in tokens:
                file.enfiler(token)
            exp = npi2tree(file)
            self.text.set(exp.evalue())
        except:
            self.text.set("Erreur NPI")

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