from kivy.app import App
from kivy.lang import Builder
from kivy.uix.screenmanager import ScreenManager, Screen
from kivy.properties import ObjectProperty
from kivy.uix.popup import Popup
from kivy.uix.label import Label
from database import DataBase
class CreateAccountWindow(Screen):
namee = ObjectProperty(None)
email = ObjectProperty(None)
password = ObjectProperty(None)
def submit(self):
if self.namee.text != "" and self.email.text != "" and self.email.text.count("@") == 1 and self.email.text.count(".") > 0:
if self.password != "":
db.add_user(self.email.text, self.password.text, self.namee.text)
self.reset()
sm.current = "login"
else:
invalidForm()
else:
invalidForm()
def login(self):
self.reset()
sm.current = "login"
def reset(self):
self.email.text = ""
self.password.text = ""
self.namee.text = ""
class LoginWindow(Screen):
email = ObjectProperty(None)
password = ObjectProperty(None)
def loginBtn(self):
if db.validate(self.email.text, self.password.text):
MainWindow.current = self.email.text
self.reset()
sm.current = "main"
else:
invalidLogin()
def createBtn(self):
self.reset()
sm.current = "create"
def reset(self):
self.email.text = ""
self.password.text = ""
class MainWindow(Screen):
n = ObjectProperty(None)
created = ObjectProperty(None)
email = ObjectProperty(None)
current = ""
def logOut(self):
sm.current = "login"
def on_enter(self, *args):
password, name, created = db.get_user(self.current)
self.n.text = "Account Name: " + name
self.email.text = "Email: " + self.current
self.created.text = "Created On: " + created
class WindowManager(ScreenManager):
pass
def invalidLogin():
pop = Popup(title='Invalid Login',
content=Label(text='Invalid username or password.'),
size_hint=(None, None), size=(400, 400))
pop.open()
def invalidForm():
pop = Popup(title='Invalid Form',
content=Label(text='Please fill in all inputs with valid information.'),
size_hint=(None, None), size=(400, 400))
pop.open()
kv = Builder.load_file("my.kv")
sm = WindowManager()
db = DataBase("users.txt")
screens = [LoginWindow(name="login"), CreateAccountWindow(name="create"),MainWindow(name="main")]
for screen in screens:
sm.add_widget(screen)
sm.current = "login"
class MyMainApp(App):
def build(self):
return sm
if __name__ == "__main__":
MyMainApp().run()
--------------------------------
#database.py
import datetime
class DataBase:
def __init__(self, filename):
self.filename = filename
self.users = None
self.file = None
self.load()
def load(self):
self.file = open(self.filename, "r")
self.users = {}
for line in self.file:
email, password, name, created = line.strip().split(";")
self.users[email] = (password, name, created)
self.file.close()
def get_user(self, email):
if email in self.users:
return self.users[email]
else:
return -1
def add_user(self, email, password, name):
if email.strip() not in self.users:
self.users[email.strip()] = (password.strip(), name.strip(), DataBase.get_date())
self.save()
return 1
else:
print("Email exists already")
return -1
def validate(self, email, password):
if self.get_user(email) != -1:
return self.users[email][0] == password
else:
return False
def save(self):
with open(self.filename, "w") as f:
for user in self.users:
f.write(user + ";" + self.users[user][0] + ";" + self.users[user][1] + ";" + self.users[user][2] + "\n")
@staticmethod
def get_date():
return str(datetime.datetime.now()).split(" ")[0]
------------------------
#my.kv
<CreateAccountWindow>:
name: "create"
namee: namee
email: email
password: passw
FloatLayout:
cols:1
FloatLayout:
size: root.width, root.height/2
Label:
text: "Create an Account"
size_hint: 0.8, 0.2
pos_hint: {"x":0.1, "top":1}
font_size: (root.width**2 + root.height**2) / 14**4
Label:
size_hint: 0.5,0.12
pos_hint: {"x":0, "top":0.8}
text: "Name: "
font_size: (root.width**2 + root.height**2) / 14**4
TextInput:
pos_hint: {"x":0.5, "top":0.8}
size_hint: 0.4, 0.12
id: namee
multiline: False
font_size: (root.width**2 + root.height**2) / 14**4
Label:
size_hint: 0.5,0.12
pos_hint: {"x":0, "top":0.8-0.13}
text: "Email: "
font_size: (root.width**2 + root.height**2) / 14**4
TextInput:
pos_hint: {"x":0.5, "top":0.8-0.13}
size_hint: 0.4, 0.12
id: email
multiline: False
font_size: (root.width**2 + root.height**2) / 14**4
Label:
size_hint: 0.5,0.12
pos_hint: {"x":0, "top":0.8-0.13*2}
text: "Password: "
font_size: (root.width**2 + root.height**2) / 14**4
TextInput:
pos_hint: {"x":0.5, "top":0.8-0.13*2}
size_hint: 0.4, 0.12
id: passw
multiline: False
password: True
font_size: (root.width**2 + root.height**2) / 14**4
Button:
pos_hint:{"x":0.3,"y":0.25}
size_hint: 0.4, 0.1
font_size: (root.width**2 + root.height**2) / 17**4
text: "Already have an Account? Log In"
on_release:
root.manager.transition.direction = "left"
root.login()
Button:
pos_hint:{"x":0.2,"y":0.05}
size_hint: 0.6, 0.15
text: "Submit"
font_size: (root.width**2 + root.height**2) / 14**4
on_release:
root.manager.transition.direction = "left"
root.submit()
<LoginWindow>:
name: "login"
email: email
password: password
FloatLayout:
Label:
text:"Email: "
font_size: (root.width**2 + root.height**2) / 13**4
pos_hint: {"x":0.1, "top":0.9}
size_hint: 0.35, 0.15
TextInput:
id: email
font_size: (root.width**2 + root.height**2) / 13**4
multiline: False
pos_hint: {"x": 0.45 , "top":0.9}
size_hint: 0.4, 0.15
Label:
text:"Password: "
font_size: (root.width**2 + root.height**2) / 13**4
pos_hint: {"x":0.1, "top":0.7}
size_hint: 0.35, 0.15
TextInput:
id: password
font_size: (root.width**2 + root.height**2) / 13**4
multiline: False
password: True
pos_hint: {"x": 0.45, "top":0.7}
size_hint: 0.4, 0.15
Button:
pos_hint:{"x":0.2,"y":0.05}
size_hint: 0.6, 0.2
font_size: (root.width**2 + root.height**2) / 13**4
text: "Login"
on_release:
root.manager.transition.direction = "up"
root.loginBtn()
Button:
pos_hint:{"x":0.3,"y":0.3}
size_hint: 0.4, 0.1
font_size: (root.width**2 + root.height**2) / 17**4
text: "Don't have an Account? Create One"
on_release:
root.manager.transition.direction = "right"
root.createBtn()
<MainWindow>:
n: n
email: email
created:created
FloatLayout:
Label:
id: n
pos_hint:{"x": 0.1, "top":0.9}
size_hint:0.8, 0.2
text: "Account Name: "
Label:
id: email
pos_hint:{"x": 0.1, "top":0.7}
size_hint:0.8, 0.2
text: "Email: "
Label:
id: created
pos_hint:{"x": 0.1, "top":0.5}
size_hint:0.8, 0.2
text: "Created: "
Button:
pos_hint:{"x":0.2, "y": 0.1}
size_hint:0.6,0.2
text: "Log Out"
on_release:
app.root.current = "login"
root.manager.transition.direction = "down"
reference:
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