added more functionality

app.py

@@ -0,0 +1,152 @@
+from PyQt5 import uic, QtWidgets
+from PyQt5.QtWidgets import *
+from PyQt5.QtGui import QPalette, QColor
+from PyQt5.QtCore import Qt
+import mysql.connector as ms
+
+
+class MyGUI(QMainWindow):
+    def __init__(self):
+        super(MyGUI, self).__init__()
+        uic.loadUi("lib.ui", self)
+        self.show()
+        self.isConnected = False
+        self.pushButton.clicked.connect(self.connectDB)
+        self.connect_db_button.clicked.connect(self.UseDB)
+        self.viewTbBtn.clicked.connect(self.setTable)
+        self.update_copies_btn.clicked.connect(self.updateBookCopies)
+        self.doActionBtn.clicked.connect(self.uiActions)
+
+        ## Disabling all buttons
+        self.prohibit()
+
+    def uiActions(self):
+        if self.addBook_radio.isChecked():
+            self.addBook()
+
+        elif self.addMember_radio.isChecked():
+            self.addMember()
+
+        elif self.checkAvailability_radio.isChecked():
+            self.checkAvailibilty()
+
+        elif self.assignBook_radio.isChecked():
+            self.assignBook()
+
+        elif self.updateCopies_radio.isChecked():
+            self.updateCopies()
+
+    def addBook(self):
+        self.stackedWidget.setCurrentWidget(self.add_book)
+        isbn = self.book_isbn.text()
+        name = self.book_name.text()
+        genre = self.book_genre.text()
+        author = self.book_author.text()
+        price = self.book_price.text()
+        copies = self.book_copies.text()
+
+        self.cur.execute
+
+    def addMember(self):
+        print('add member')
+    def checkAvailibilty(self):
+        print('add availabe')
+    def assignBook(self):
+        print('add assign book')
+    def updateCopies(self):
+        self.groupBox.setEnabled(False)
+        self.stackedWidget_2.setCurrentWidget(self.update_copies_screen)
+        print('update book')
+
+
+    def updateBookCopies(self):
+        try:
+            book_id = self.new_book_id.text()
+            copies = str(self.new_book_copies.value())
+            self.cur.execute(f'Update books set Copies = \'{copies}\' where ISBN = \'{book_id}\'')
+            self.con.commit()
+            message = QMessageBox()
+            message.setText('The book copies where successfully updated!!')
+            message.exec_()
+            self.stackedWidget_2.setCurrentWidget(self.stats)
+            self.groupBox.setEnabled(True)
+        except Exception as e:
+            message = QMessageBox()
+            message.setText(f'An error occurred: {e}')
+            message.exec_()
+
+
+
+
+    def prohibit(self):
+        self.label_database.setEnabled(False)
+        self.heading2.setEnabled(False)
+        self.databases_drop.setEnabled(False)
+        self.connect_db_button.setEnabled(False)
+
+    def hideLogin(self):
+        self.stackedWidget.setCurrentWidget(self.actions_page)
+
+    def UseDB(self):
+        db = self.databases_drop.currentText()
+        self.cur.execute(f"Use {db}")
+        self.hideLogin()
+        self.setTable("books")
+        self.setTbDrop()
+
+    def connectDB(self):
+        try:
+            host_ = self.lineEdit.text()
+            username_ = self.lineEdit_2.text()
+            password_ = self.lineEdit_3.text()
+
+            self.con = ms.connect(host=host_, username=username_, password=password_)
+            self.status.setText("Connected!")
+            self.isConnected = True
+            self.cur = self.con.cursor()
+
+            self.enableDB()
+            self.setDbDrop()
+
+        except Exception as err:
+            print(err)
+            self.prohibit()
+            self.status.setText("Error! Couldn't connect to DB")
+
+    def setDbDrop(self):
+        self.cur.execute("SHOW DATABASES")
+        dbs = self.cur.fetchall()
+        for i in dbs:
+            self.databases_drop.addItem(i[0])
+
+    def setTbDrop(self):
+        self.cur.execute("SHOW Tables")
+        tbs = self.cur.fetchall()
+        for i in tbs:
+            self.tables_drop.addItem(i[0])
+
+    def enableDB(self):
+        self.heading2.setEnabled(True)
+        self.databases_drop.setEnabled(True)
+        self.connect_db_button.setEnabled(True)
+
+    def setTable(self, table):
+        row = 0
+        tableX = table
+        if not table:
+            tableX = self.tables_drop.currentText()
+
+        self.cur.execute(f"SELECT * from {tableX}")
+        data = self.cur.fetchall()
+        self.tableWidget.setRowCount(len(data))
+        for i in data:
+            row += 1
+            self.tableWidget.setItem(row, 0, QtWidgets.QTableWidgetItem(i[0]))
+            self.tableWidget.setItem(row, 1, QtWidgets.QTableWidgetItem(i[1]))
+            self.tableWidget.setItem(row, 2, QtWidgets.QTableWidgetItem(i[2]))
+            self.tableWidget.setItem(row, 3, QtWidgets.QTableWidgetItem(i[3]))
+
+
+app = QApplication([])
+window = MyGUI()
+app.exec_()