import tkinter as tk
from tkinter import ttk

# Initialize main window
root = tk.Tk()
root.title("Promille Rechner")
root.geometry("400x600")

geschlecht = tk.DoubleVar(value=0.7)
gewicht = tk.DoubleVar(value=75.0)
drinks = []
alkoholgehalt = tk.StringVar(value="0.000‰")

def add_drink():
    ml = float(ml_var.get())
    percent = float(percent_var.get())
    if ml and percent:
        drinks.append([ml,percent])
        update_drinks_display()
    ml_var.set("")
    percent_var.set("")

def remove_last_drink():
    if drinks: # if drinks is not empty
        drinks.pop()
        update_drinks_display()

def clear_drinks():
    drinks = []
    update_drinks_display()

def update_drinks_display():
    drinks_text.config(state=tk.NORMAL)
    drinks_text.delete(1.0, tk.END)
    drinks_nums = '\n'.join(f"{drink[0]} ml, {drink[1]}%" for drink in drinks)
    drinks_text.insert(tk.END, drinks_nums)
    drinks_text.config(state=tk.DISABLED)

    alkohol_masse = sum([drink[0] * (drink[1]/100) * 0.8 for drink in drinks])
    promille = alkohol_masse / float(gewicht.get()) * float(geschlecht.get())

    alkoholgehalt.set(f"{round(promille, 3)}‰")

# Ueberschrift
tk.Label(root, text="Promille Rechner", font=("Arial", 14)).pack(pady=5)

# Geschlecht
frame_gender = tk.Frame(root)
frame_gender.pack()
tk.Radiobutton(frame_gender, text="Männlich", variable=geschlecht, value=0.7).pack(side=tk.LEFT)
tk.Radiobutton(frame_gender, text="Weiblich", variable=geschlecht, value=0.6).pack(side=tk.LEFT)
tk.Radiobutton(frame_gender, text="Minderjährig", variable=geschlecht, value=0.8).pack(side=tk.LEFT)

# Gewicht
tk.Label(root, text="Gewicht (kg):").pack()
tk.Entry(root, textvariable=gewicht).pack()

# Separator
ttk.Separator(root, orient="horizontal").pack(fill="x", pady=5)

# Drink inputs
ml_var = tk.StringVar()
percent_var = tk.StringVar()
tk.Label(root, text="ml:").pack()
tk.Entry(root, textvariable=ml_var).pack()
tk.Label(root, text="%:").pack()
tk.Entry(root, textvariable=percent_var).pack()
tk.Button(root, text="Hinzufügen", command=add_drink).pack()

# Drinks display
tk.Label(root, text="Getraenke").pack()
drinks_text = tk.Text(root, height=5, state=tk.DISABLED)
drinks_text.pack()

# Buttons to clear drinks
tk.Button(root, text="Letztes entfernen", command=remove_last_drink).pack()
tk.Button(root, text="Alle entfernen", command=clear_drinks).pack()

# Promille text
tk.Label(root, text="Dein Promillegehalt").pack()
alk_label = tk.Label(root, textvariable=alkoholgehalt).pack()

root.mainloop()