def sign_up(self, user_name, user_password, tech_interest):
'''This is the function called when "sign up" is clicked'''
# Check if all fields are filled
if user_name == '' or user_password == '' or tech_interest == '':
tk.messagebox.showerror("", "Please fill out all the fields!")
return
# Check if username already existed in pending applications
if AccountsManager.is_pending(user_name):
tk.messagebox.showerror("Error", "You application is still pending, please wait for approval!")
return
# Check if username already existed in accounts db
if AccountsManager.username_exists(user_name):
tk.messagebox.showerror("Error", "User name already existed, please re-enter!")
return
# Add account application to db
AccountsManager.add_pending_user({
'username': user_name,
'password': user_password,
'technical_interest': tech_interest
})
tk.messagebox.showinfo("Information", "Registration is successful, please wait for approval.")
self.controller.show_frame("MainPage")
def log_in(self, username_input, password_input):
# Check if all fields are filled
if username_input == '' or password_input == '':
tk.messagebox.showerror("Error", "Please fill out all the fields!")
return
# Check if username is in pending applications db
if AccountsManager.is_pending(username_input):
tk.messagebox.showerror("Error",
"Your application is still pending!")
return
# Check if username exists in db, if yes then check password
if not AccountsManager.username_exists(username_input):
tk.messagebox.showerror("Error", "Wrong username!")
else:
user = AccountsManager.validate_user(username_input,
password_input)
if user:
# If password match (validates successfully), set user info into the system by calling the controller method
username = username_input
userid = user['userid']
usertype = user['usertype']
self.controller.log_in(username, userid, usertype)
else:
tk.messagebox.showerror("Error", "Wrong password!")