. update

Scripts/python/ms_graph.py

@@ -0,0 +1,44 @@
+import webbrowser
+from datetime import datetime
+import json
+import os
+import msal
+
+GRAPH_API_ENDPOINT = 'https://graph.microsoft.com/v1.0'
+
+def generate_access_token(app_id, scopes):
+    # Save Session Token as a token file
+    access_token_cache = msal.SerializableTokenCache()
+
+    # read the token file
+    if os.path.exists('ms_graph_api_token.json'):
+        access_token_cache.deserialize(open("ms_graph_api_token.json", "r").read())
+        token_detail = json.load(open('ms_graph_api_token.json',))
+        token_detail_key = list(token_detail['AccessToken'].keys())[0]
+        token_expiration = datetime.fromtimestamp(int(token_detail['AccessToken'][token_detail_key]['expires_on']))
+        if datetime.now() > token_expiration:
+            os.remove('ms_graph_api_token.json')
+            access_token_cache = msal.SerializableTokenCache()
+
+    # assign a SerializableTokenCache object to the client instance
+    client = msal.PublicClientApplication(client_id=app_id, token_cache=access_token_cache)
+
+    accounts = client.get_accounts()
+    if accounts:
+        # load the session
+        token_response = client.acquire_token_silent(scopes, accounts[0])
+    else:
+        # authetnicate your accoutn as usual
+        flow = client.initiate_device_flow(scopes=scopes)
+        print('user_code: ' + flow['user_code'])
+        webbrowser.open('https://microsoft.com/devicelogin')
+        token_response = client.acquire_token_by_device_flow(flow)
+
+    with open('ms_graph_api_token.json', 'w') as _f:
+        _f.write(access_token_cache.serialize())
+
+    return token_response
+
+if __name__ == '__main__':
+    ...
+