import tkinter as tk
from tkinter import messagebox
import customtkinter
import os
import json
import requests
from connection import authenticate_client
from config import CONFIG

#################
### Functions ###
#################

def login():
    """Function to handle the login process."""
    client_id = entry_username.get() if entry_username.get() else CONFIG["client"]["default_id"]
    client_password = entry_password.get() if entry_password.get() else CONFIG["client"]["default_password"]
    try:
        response = authenticate_client(client_id, client_password)  # Authenticate the client
        json_response = response.json()  # Convert the response content to JSON
        if json_response["success"]:  # If the authentication is successful, open the dashboard
            session_data = {
                'session_cookie': response.cookies.get_dict(),
                'client_id': client_id
            }
            with open('application/session_data.json', 'w') as f:  # Save the session data to a file
                json.dump(session_data, f)
            root.destroy()
            os.system("python application/dashboard.py")
        else:
            messagebox.showerror("Login failed", json_response["message"]) 
    except requests.exceptions.RequestException as e:
        messagebox.showerror("Login failed", f"Could not connect to the server. Please try again later. Error: {str(e)}")

##############
### Layout ###
##############

# Set appearance mode based on configuration
if CONFIG["preferences"]["dark_theme"] == "dark":
    customtkinter.set_appearance_mode("dark")
else:
    customtkinter.set_appearance_mode("light")

# Initialize the main window
root = customtkinter.CTk()
root.title("Luxbank Login")
root.iconbitmap("application/luxbank.ico")
root.geometry("400x300")

# Create and pack the label for the title
label = customtkinter.CTkLabel(root, text="Luxbank", font=("Helvetica", 24))
label.pack(pady=20)

# Create and pack the username entry
entry_username = customtkinter.CTkEntry(root, placeholder_text="Client ID")
entry_username.pack(pady=20)

# Create and pack the password entry
entry_password = customtkinter.CTkEntry(root, placeholder_text="Password", show="*")
entry_password.pack(pady=10)

# Create and pack the login button
login_button = customtkinter.CTkButton(root, text="Login", command=login)
login_button.pack(pady=15)

# Bind the Return key to the login function
root.bind('<Return>', lambda event=None: login())

###########
### Run ###
###########

# Start the main event loop
root.mainloop()