from tkinter import *
from tkinter.ttk import *

class Window(Frame):
    def __init__(self, master=None):
        Frame.__init__(self, master)
        self.master = master

root = Tk()
app = Window(root)

def add_base():
    out = []
    for x in baseDropdown['values']:
        out.append(int(x))
    try:
        if not int(baseInput.get()) in out:
            out.append(int(baseInput.get()))
        baseDropdown['values'] = sorted(out)
        functionTrigger(0,0,0) # Trigger number conversion if a base is added
    except ValueError:
        print("Not a valid base!")
        lbl1 = Label(root, text="\nInvalid base!", font=("Arial", 12))
        lbl1.grid(column=1, row=0)

def functionTrigger(a,b,c): # Positional arguments from the trace are not needed for this program, but still must be defined
    input = numberInput.get()
    base = int(baseDropdown['values'][baseDropdown.current()]) # Retreive the current selected base
    baseConverter(input, base)

def baseConverter(userInput, numberBase):
    try:
        decimalNum = int(userInput,numberBase) # First attempt to get the number in decimal.
    except:
        print("bad base")
        return
    
    outputText = ""
    for base in baseDropdown['values']: # Iterate through all bases
        outputText += "Base " + base + ": "
        outputNumber = ""
        tempNum = decimalNum
        while tempNum > 0:
            digit = int(tempNum % int(base))
            tempNum = int(tempNum / int(base))
            if digit < 10: # Can be represented with 0-9
                outputNumber += str(digit)
            else: # Alphanumeric characters needed
                outputNumber += chr(55 + digit) # ASCII character offset for capital letters
        outputNumber = outputNumber[::-1]
        outputText += outputNumber + "\n"
    lblOut = Label(root, text=outputText, font=("Arial", 12))
    lblOut.grid(column=0, row=7)

root.wm_title("Numerical converter")

lbl0 = Label(root, text="Add a base:", font=("Arial", 12))
lbl0.grid(column=0, row=1)

lbl1 = Label(root, text="\n", font=("Arial", 12))
lbl1.grid(column=1, row=0)

addBaseBtn = Button(root, text="Add", command=add_base)
addBaseBtn.grid(column=2, row=1)

baseInput = Entry(root,width=10, state='enabled')
baseInput.grid(column = 1, row = 1)

lbl2 = Label(root, text="", font=("Arial", 12))
lbl2.grid(column=0, row=3)

separator1 = Separator(root, orient='horizontal')
separator1.place(relx=0, rely=0.2, relwidth=1, relheight=1)

separator2 = Separator(root, orient='horizontal')
separator2.place(relx=0, rely=0.43, relwidth=1, relheight=1)

baseDropdown = Combobox(root)
baseDropdown['values']= (2, 10, 16)
baseDropdown.current(1) #set the selected item
baseDropdown.grid(column=1, row=4)
lbl3 = Label(root, text="\nNumber Base \n of the input:\n", font=("Arial", 12))
lbl3.grid(column=0, row=4)

userInputRaw = StringVar()
userInputRaw.trace_add("write", functionTrigger)

numberInput = Entry(root,width=10, state='enabled', textvariable=userInputRaw)
numberInput.grid(column=1, row = 6)

lbl4 = Label(root, text="Number to convert:", font=("Arial", 12))
lbl4.grid(column=0, row=6)

lbl5 = Label(root, text="", font=("Arial", 12))
lbl5.grid(column=50, row=5)

lblOut = Label(root, text="rtedgh", font=("Arial", 12))
lblOut.grid(column=0, row=7)

root.resizable(False, False)
root.geometry('600x400')
root.mainloop()