#2 로그인 성공 후 메뉴로 이동

login.py

@@ -0,0 +1,79 @@
+import mysql.connector as mc
+from PyQt5.QtWidgets import *
+import sys
+from menu import MainMenu
+
+# MySQL 연결 설정
+def connect_to_mysql():
+    mydb = mc.connect(
+        host="34.22.65.53",
+        user="root",
+        password="cms",
+        database="cms"
+    )
+    return mydb
+
+class LoginWindow(QWidget):
+    def __init__(self):
+        super().__init__()
+        self.title = "Login"
+        self.initUI()
+        self.main_menu = None  # MainMenu 인스턴스
+
+    def initUI(self):
+        self.setWindowTitle(self.title)
+
+        self.label_email = QLabel("Email:", self)
+        self.lineEdit_email = QLineEdit(self)
+
+        self.label_password = QLabel("Password:", self)
+        self.lineEdit_password = QLineEdit(self)
+        self.lineEdit_password.setEchoMode(QLineEdit.Password)
+
+        self.button_login = QPushButton("Login", self)
+        self.button_login.clicked.connect(self.login)
+
+        layout = QVBoxLayout()
+        layout.addWidget(self.label_email)
+        layout.addWidget(self.lineEdit_email)
+        layout.addWidget(self.label_password)
+        layout.addWidget(self.lineEdit_password)
+        layout.addWidget(self.button_login)
+
+        self.setLayout(layout)
+
+    def login(self):
+        email = self.lineEdit_email.text()
+        password = self.lineEdit_password.text()
+
+        # MySQL 연결
+        mydb = connect_to_mysql()
+        mycursor = mydb.cursor()
+
+        # id와 password로 인증 확인
+        query = "SELECT id FROM teacher WHERE id = %s AND password = %s"
+        values = (email, password)
+        mycursor.execute(query, values)
+        result = mycursor.fetchone()
+
+        if result is not None:
+            self.hide()
+            self.main_menu = MainMenu()  # MainMenu 인스턴스 생성
+            self.main_menu.show()
+        else:
+            QMessageBox.warning(self, "Login Failed", "Incorrect email or password")
+
+        # 연결 종료
+        mycursor.close()
+        mydb.close()
+
+    def closeEvent(self, event):
+        if self.main_menu is not None:
+            self.main_menu.show()  # 메인 메뉴 창 보여주기
+        event.accept()
+
+if __name__ == '__main__':
+    app = QApplication(sys.argv)
+    mainWindow = LoginWindow()
+    mainWindow.show()
+    sys.exit(app.exec_())

menu.py

@@ -1,6 +1,7 @@
-from PyQt5.QtWidgets import QApplication, QWidget, QVBoxLayout, QPushButton
+from PyQt5.QtWidgets import QApplication, QWidget, QVBoxLayout, QPushButton, QLabel
 from register import Register
 from attendance import Attendance
+import sys
 
 class MainMenu(QWidget):
     def __init__(self):
@@ -33,7 +34,8 @@ def open_attendance(self):
         self.attendance = Attendance(self)
         self.attendance.show()
 
-app = QApplication([])
-ex = MainMenu()
-ex.show()
-app.exec_()
+if __name__ == "__main__":
+    app = QApplication([])
+    ex = MainMenu()
+    ex.show()
+    app.exec_()