diff --git a/gui/main.py b/gui/main.py
index 6c94e47..50b146a 100644
--- a/gui/main.py
+++ b/gui/main.py
@@ -1,34 +1,144 @@
+import json
+import os
 import sys
+
 from PyQt5.QtWidgets import QApplication, QMainWindow, QDialog
-from mainWindow import Ui_MainWindow
-from connection import Ui_Form
+
+import modules.aisql as aisql
+from gui.apikey import Ui_ApiKey as ApiKeyForm
+from gui.connection import Ui_Connection as ConnectionForm
+from gui.gui.Window import Ui_MainWindow
+
+configfolder = "config"
+configfile = "config.json"
+
 
 class MainWindow(QMainWindow):
     def __init__(self):
         super().__init__()
         self.ui = Ui_MainWindow()
         self.ui.setupUi(self)
+
+        # Open Connection Window
         self.ui.actionConnect_DB.triggered.connect(self.open_connection)
 
+        # Open API Key Window
+        self.ui.actionConnect_API_Key.triggered.connect(self.open_apikey)
+
+        # Pressed Convert Button
+        self.ui.convertButton.clicked.connect(self.on_convert_button_clicked)
+
     def open_connection(self):
         self.connection_window = ConnectionWindow(self)
         self.connection_window.show()
 
+    def open_apikey(self):
+        self.apikey_window = ApiKeyWindow(self)
+        self.apikey_window.show()
+
+    def on_convert_button_clicked(self):
+        print("Convert Button Clicked")
+        print(self.ui.textInput.text())
+
+
 class ConnectionWindow(QDialog):
     def __init__(self, parent=None):
         super().__init__(parent)
-        self.ui = Ui_Form()
+        self.ui = ConnectionForm()
         self.ui.setupUi(self)
-        self.ui.saveButton.setEnabled(False)
+        print('1')
+        # Load DB Config from file
+        with open(os.path.join(configfolder, configfile), "r") as f:
+            self.config = json.load(f)
+            self.db_type = self.config["db_type"]
+            self.db_ip = self.config["db_ip"]
+            self.db_port = self.config["db_port"]
+            self.db_username = self.config["db_username"]
+            self.db_password = self.config["db_password"]
+            self.db_name = self.config["db_name"]
 
-    def customSlot(self, text):
-        if self.ui.IP.text():
-            self.ui.saveButton.setEnabled(True)
-        else:
+        print('2')
+
+        self.ui.dbtypeCombo.setText(self.db_type)
+        self.ui.ipInput.setText(self.db_ip)
+        self.ui.portInput.setText(self.db_port)
+        self.ui.usernameInput.setText(self.db_username)
+        self.ui.passwordInput.setText(self.db_password)
+        self.ui.databaseInput.setText(self.db_name)
+
+        print('3')
+
+        # If IP Port and Database are empty, disable Buttons
+        if self.db_ip == "" or self.db_port == "" or self.db_name == "":
             self.ui.saveButton.setEnabled(False)
+            self.ui.testButton.setEnabled(False)
+        else:
+            self.ui.saveButton.setEnabled(True)
+            self.ui.testButton.setEnabled(True)
+
+        print('4')
+
+
+class ApiKeyWindow(QDialog):
+
+    def __init__(self, parent=None):
+        super().__init__(parent)
+        self.ui = ApiKeyForm()
+        self.ui.setupUi(self)
+        self.ui.outputLabel.setText("")
+        # Load API Key from file
+        with open(os.path.join(configfolder, configfile), "r") as f:
+            self.config = json.load(f)
+            self.apikey = self.config["apikey"]
+        self.ui.apikeyInput.setText(self.apikey)
+
+        if self.apikey == "":
+            self.ui.saveButton.setEnabled(False)
+            self.ui.testButton.setEnabled(False)
+        else:
+            self.ui.saveButton.setEnabled(True)
+            self.ui.testButton.setEnabled(True)
+
+        # Unlock Buttons if text is entered
+        self.ui.apikeyInput.textChanged.connect(self.on_text_changed)
+
+        # Pressed Save Button
+        self.ui.saveButton.clicked.connect(self.on_save_button_clicked)
+
+        # Pressed Test Button
+        self.ui.testButton.clicked.connect(self.on_test_button_clicked)
+
+    def on_text_changed(self):
+        if self.ui.apikeyInput.text() == "":
+            self.ui.saveButton.setEnabled(False)
+            self.ui.testButton.setEnabled(False)
+        else:
+            self.ui.saveButton.setEnabled(True)
+            self.ui.testButton.setEnabled(True)
+
+    def on_save_button_clicked(self):
+
+        self.apikey = self.ui.apikeyInput.text()
+        with open(os.path.join(configfolder, configfile), "w") as f:
+            self.config["apikey"] = self.apikey
+            json.dump(self.config, f)
+
+        # Close Window
+        self.close()
+
+    def on_test_button_clicked(self):
+        test_key = self.ui.apikeyInput.text()
+        ai = aisql.AI(test_key)
+        if ai.test_key():
+            self.ui.outputLabel.setText("API Key is valid")
+            self.ui.outputLabel.setStyleSheet("color: green")
+        else:
+            self.ui.outputLabel.setText("API Key is invalid")
+            self.ui.outputLabel.setStyleSheet("color: red")
+
 
 if __name__ == "__main__":
     app = QApplication(sys.argv)
     window = MainWindow()
     window.show()
-    sys.exit(app.exec_())
\ No newline at end of file
+    sys.exit(app.exec_())