import customtkinter as ctk
import winreg
import subprocess
import sys
import os

# Registry-Pfad definieren
REG_PATH = r"Software\PDFExporter"

def read_registry_value(name):
    try:
        key = winreg.OpenKey(winreg.HKEY_CURRENT_USER, REG_PATH, 0, winreg.KEY_READ)
        value, _ = winreg.QueryValueEx(key, name)
        winreg.CloseKey(key)
        return value
    except FileNotFoundError:
        return None

def write_registry_value(name, value):
    try:
        key = winreg.CreateKey(winreg.HKEY_CURRENT_USER, REG_PATH)
        winreg.SetValueEx(key, name, 0, winreg.REG_SZ, value)
        winreg.CloseKey(key)
    except Exception as e:
        print(f"Fehler beim Schreiben in Registry: {e}")

# def config_exists():
#     return read_registry_value("APIKey") is not None

def save_config_and_close(api_entry, server_entry, label_entry, order_entry, app):
    write_registry_value("APIKey", api_entry.get())
    write_registry_value("Server", server_entry.get())
    write_registry_value("LabelPrinter", label_entry.get())
    write_registry_value("OrderPrinter", order_entry.get())
    app.destroy()

def show_config_gui():
    ctk.set_appearance_mode("System")
    ctk.set_default_color_theme("blue")

    app = ctk.CTk()
    app.title("Erstkonfiguration")
    window_width = 400
    window_height = 400

    # Bildschirmgröße ermitteln
    screen_width = app.winfo_screenwidth()
    screen_height = app.winfo_screenheight()

    # Position zum Zentrieren berechnen
    x = int((screen_width / 2) - (window_width / 2))
    y = int((screen_height / 2) - (window_height / 2))

    app.geometry(f"{window_width}x{window_height}+{x}+{y}")

    frame = ctk.CTkFrame(master=app)
    frame.pack(pady=20, padx=20, fill="both", expand=True)

    # Vorhandene Werte aus der Registry lesen
    existing_api = read_registry_value("APIKey") or ""
    existing_server = read_registry_value("Server") or ""
    existing_label = read_registry_value("LabelPrinter") or ""
    existing_order = read_registry_value("OrderPrinter") or ""

    api_label = ctk.CTkLabel(master=frame, text="API Key:")
    api_label.pack(pady=5)
    api_entry = ctk.CTkEntry(master=frame, width=300)
    api_entry.insert(0, existing_api)
    api_entry.pack()

    server_label = ctk.CTkLabel(master=frame, text="Server:")
    server_label.pack(pady=5)
    server_entry = ctk.CTkEntry(master=frame, width=300)
    server_entry.insert(0, existing_server)
    server_entry.pack()

    label_label = ctk.CTkLabel(master=frame, text="Label-Drucker:")
    label_label.pack(pady=5)
    label_entry = ctk.CTkEntry(master=frame, width=300)
    label_entry.insert(0, existing_label)
    label_entry.pack()

    order_label = ctk.CTkLabel(master=frame, text="Order-Drucker:")
    order_label.pack(pady=5)
    order_entry = ctk.CTkEntry(master=frame, width=300)
    order_entry.insert(0, existing_order)
    order_entry.pack()

    save_button = ctk.CTkButton(master=frame, text="Speichern", command=lambda: save_config_and_close(
        api_entry, server_entry, label_entry, order_entry, app))
    save_button.pack(pady=15)

    app.mainloop()

def start_gui_app():
    # gui.py im gleichen Verzeichnis starten
    script_path = os.path.join(os.path.dirname(os.path.abspath(__file__)), "gui.py")
    subprocess.Popen([sys.executable, script_path])


show_config_gui()