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Login-Signup.py
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Login-Signup.py
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import os
import random
import time
from PyQt5.uic import loadUi
from PyQt5.QtWidgets import QApplication, QMainWindow, QLabel,QLineEdit
from PyQt5.QtCore import Qt
from PyQt5 import QtCore
import matplotlib
from Database import *
from App import MyMainWindow
matplotlib.use('Qt5Agg')
import sys
class Login(QMainWindow):
def __init__(self):
super(Login, self).__init__()
self.database_attributes = sqlite3_Database()
self.ui = loadUi("Login.ui", self)
self.username = self.ui.username
self.password = self.ui.password
self.login_button = self.ui.login
self.set_echo_button = self.ui.set_echo
self.signup_button = self.ui.sign_up
self.echo_password = True
self.username.setReadOnly(True)
self.password.setReadOnly(True)
self.ui.frame.mousePressEvent = lambda event: self.set_line_edit_default()
self.username.mousePressEvent = lambda event: self.line_edit_pressed(self.ui.username)
self.password.mousePressEvent = lambda event: self.line_edit_pressed(self.ui.password)
self.set_echo_button.clicked.connect(self.set_echo_mode)
self.signup_button.clicked.connect(self.redirect_to_signup)
self.show()
def check_prev_login(self):
login_info_dir = os.path.expanduser("kullanicilar.txt")
if os.path.exists(login_info_dir):
with open(login_info_dir, "r") as path:
ID = path.read()
user_infos, user_stats = self.database_attributes.choose_from_personalID(ID)
username = user_infos["Username"]
self.close()
window = MyMainWindow(username)
window.show()
return True
else:
return False
def line_edit_pressed(self, lineEdit):
lineEdit.setReadOnly(False)
if lineEdit.text() == " Password" or lineEdit.text() == " Username":
lineEdit.setText("")
if lineEdit == self.password:
if len(self.username.text()) == 0:
self.username.setText(" Username")
self.username.setReadOnly(True)
elif lineEdit == self.username:
if len(self.password.text()) == 0:
self.password.setText(" Password")
self.password.setReadOnly(True)
def set_line_edit_default(self):
if len(self.password.text()) == 0:
self.password.setText(" Password")
if len(self.username.text()) == 0:
self.username.setText(" Username")
self.username.setReadOnly(True)
self.password.setReadOnly(True)
def set_echo_mode(self):
if self.echo_password == True:
self.password.setEchoMode(QLineEdit.Password)
self.echo_password = False
else:
self.password.setEchoMode(QLineEdit.Normal)
self.echo_password = True
def redirect_to_signup(self):
signup = Signup()
signup.show()
self.window().destroy()
class Signup(QMainWindow):
def __init__(self):
super(Signup, self).__init__()
self.ui = loadUi("Signup.ui", self)
self.database_attributes = sqlite3_Database()
self.username = self.ui.username
self.password = self.ui.password
self.signup_button = self.ui.signup_button
self.set_echo_button = self.ui.setecho
self.login_button = self.ui.redirect_login
self.email = self.ui.email
self.warn_label = self.findChild(QLabel, "warn")
self.echo_password = True
self.username.setReadOnly(True)
self.password.setReadOnly(True)
self.email.setReadOnly(True)
self.ui.frame.mousePressEvent = lambda event: self.set_line_edit_default()
self.username.mousePressEvent = lambda event: self.line_edit_pressed(self.username)
self.password.mousePressEvent = lambda event: self.line_edit_pressed(self.password)
self.email.mousePressEvent = lambda event: self.line_edit_pressed(self.email)
self.set_echo_button.clicked.connect(self.set_echo_mode)
self.signup_button.clicked.connect(self.signup)
self.login_button.clicked.connect(self.redirect_to_login)
self.setTabOrder(self.username, self.email)
self.warn_label.setVisible(False)
self.show()
def line_edit_pressed(self, lineEdit):
lineEdit.setReadOnly(False)
if lineEdit.text() == " Password" or lineEdit.text() == " Username" or lineEdit.text() == " Email":
lineEdit.setText("")
if lineEdit == self.password:
if len(self.username.text()) == 0:
self.username.setText(" Username")
if len(self.email.text()) == 0:
self.email.setText(" Email")
self.username.setReadOnly(True)
self.email.setReadOnly(True)
elif lineEdit == self.username:
if len(self.password.text()) == 0:
self.password.setText(" Password")
if len(self.email.text()) == 0:
self.email.setText(" Email")
self.password.setReadOnly(True)
self.email.setReadOnly(True)
elif lineEdit == self.email:
if len(self.password.text()) == 0:
self.password.setText(" Password")
if len(self.username.text()) == 0:
self.username.setText(" Username")
self.password.setReadOnly(True)
self.username.setReadOnly(True)
def set_line_edit_default(self):
if len(self.password.text()) == 0:
self.password.setText(" Password")
if len(self.username.text()) == 0:
self.username.setText(" Username")
if len(self.email.text()) == 0:
self.email.setText(" Email")
self.username.setReadOnly(True)
self.password.setReadOnly(True)
self.email.setReadOnly(True)
def set_echo_mode(self):
if self.echo_password == True:
self.password.setEchoMode(QLineEdit.Password)
self.echo_password = False
else:
self.password.setEchoMode(QLineEdit.Normal)
self.echo_password = True
def redirect_to_login(self):
login = Login()
login.show()
self.window().destroy()
def keyPressEvent(self, qKeyEvent):
if qKeyEvent.key() == QtCore.Qt.Key_Return:
self.setFocusPolicy(Qt.StrongFocus)
self.username.setFocus()
if (len(self.password.text()) == 0 or len(self.username.text()) == 0 or len(self.email.text()) == 0
or self.password.text() == " Password" or self.username.text() == " Username" or self.email.text() == " Email"):
self.warn_label.setVisible(True)
else:
self.warn_label.setVisible(False)
self.signup()
else:
super().keyPressEvent(qKeyEvent)
def signup(self):
if (len(self.password.text()) == 0 or len(self.username.text()) == 0 or len(self.email.text()) == 0
or self.password.text() == " Password" or self.username.text() == " Username" or self.email.text() == " Email"):
self.warn_label.setVisible(True)
else:
self.warn_label.setVisible(False)
ID_generated = False
while ID_generated == False:
randomID = self.generate_randomID()
found = self.database_attributes.check_if_ID_used(randomID)
if found:
ID_generated = True
email_check = self.database_attributes.check_if_email_exist(self.email.text())
username_check = self.database_attributes.check_if_username_exist((self.username.text()))
if email_check == False:
self.warn_label.setVisible(True)
self.warn_label.setText("This Email is already in use")
return
if username_check == False:
self.warn_label.setVisible(True)
self.warn_label.setText("This username is already taken")
return
self.database_attributes.add_user(randomID, self.username.text(), self.email.text(),self.password.text())
self.write_to_txt(randomID)
self.close()
window = MyMainWindow(self.username.text())
window.show()
def generate_randomID(self):
randomID = random.randint(0, 10000)
return randomID
def write_to_txt(self, id):
login_info_dir = os.path.expanduser("kullanicilar.txt")
with open(login_info_dir, "w") as dosya:
dosya.write(str(id))
if __name__ == '__main__':
app = QApplication(sys.argv)
window = Login()
previous_login = window.check_prev_login()
if not previous_login:
window.show()
sys.exit(app.exec_())