import tkinter as tk
from sql import *
import main
def register():

    global register_view
    global username_entry, password_entry
    register_view = tk.Tk()
    register_view.title("欢迎来到注册界面")
    register_view.geometry("300x200")

    username_label = tk.Label(register_view, text="用户名:")
    username_label.pack()
    username_entry = tk.Entry(register_view)
    username_entry.pack()

    password_label = tk.Label(register_view, text="密码:")
    password_label.pack()
    password_entry = tk.Entry(register_view)
    password_entry.pack()

    register_button = tk.Button(register_view, text="注册", command=register_0)
    register_button.pack()

    back_button = tk.Button(register_view, text="返回", command=register_return_main)
    back_button.pack()

    register_view.mainloop()

def register_0():
    entered_username = username_entry.get()
    entered_password = password_entry.get()
    if query_user(entered_username) is not None:
        erro_label = tk.Label(register_view, text="用户名已存在")
        erro_label.pack()
    else:
        add_user(entered_username, entered_password)
        ok_label = tk.Label(register_view, text="注册成功")
        ok_label.pack()

def register_return_main():
    register_view.destroy()
    main.main()

if __name__ == "__main__":
    register()