add winget install if you don't have one

winget.py

@@ -1,9 +1,47 @@
 import subprocess
 
-def winget_upgrade():
+def is_winget_installed():
+    try:
+        subprocess.run(["winget", "--version"],
+                        stdout=subprocess.PIPE,
+                        stderr=subprocess.PIPE,
+                        check=True)
+        return True
+    except subprocess.CalledProcessError:
+        return False
+    except FileNotFoundError:
+        return False
+
+def install_winget():
+    try:
+        winget_install_command = (
+            """$progressPreference = 'silentlyContinue'"""
+            """Write-Information "Downloading WinGet and "its dependencies..." """
+            "Invoke-WebRequest -Uri https://aka.ms/getwinget -OutFile Microsoft.DesktopAppInstaller_8wekyb3d8bbwe.msixbundle"
+            "Invoke-WebRequest -Uri https://aka.ms/Microsoft.VCLibs.x64.14.00.Desktop.appx -OutFile Microsoft.VCLibs.x64.14.00.Desktop.appx"
+            "Invoke-WebRequest -Uri https://github.com/microsoft/microsoft-ui-xaml/releases/download/v2.8.6/Microsoft.UI.Xaml.2.8.x64.appx -OutFile Microsoft.UI.Xaml.2.8.x64.appx"
+            "Add-AppxPackage Microsoft.VCLibs.x64.14.00.Desktop.appx"
+            "Add-AppxPackage Microsoft.UI.Xaml.2.8.x64.appx"
+            "Add-AppxPackage Microsoft.DesktopAppInstaller_8wekyb3d8bbwe.msixbundle"
+        )
+        subprocess.run(["powershell", "-ExecutionPolicy", "Bypass", "-Command", winget_install_command], check=True)
+        print ("Winget is installed")
+    except subprocess.CalledProcessError as e:
+        print(f"Error installing Winget: {e}")
+
+def upgrade_winget_packages():
     # Upgrade all installed packages using winget
     try:
         subprocess.run(["winget", "upgrade", "--all", "--accept-source-agreements", "--accept-package-agreements", "--allow-reboot"], check=True,)
         print("All installed packages upgraded successfully.")
     except subprocess.CalledProcessError as e:
         print(f"Error upgrading packages with winget: {e}")
+
+def winget_upgrade():
+    if not is_winget_installed():
+        print("Winget is not installed. Installing it now...")
+        install_winget()
+        if is_winget_installed():
+            upgrade_winget_packages()
+    else:
+        upgrade_winget_packages()