group calendar entries in index

app.py

@@ -26,7 +26,9 @@ app = Flask(__name__)
 @app.route('/')
 def index():
 
-    events = calendar_interface.get_all_calendar_events()
+    events= calendar_interface.get_future_calendar_events().get("value")
+    calendar_interface.convert_datetimes(events)
+
 
     if events is None:
         abort(404)

calendar_interface.py

@@ -1,12 +1,16 @@
-
 import json
-from lib2to3.pgen2.tokenize import TokenError
+from datetime import datetime
 import logging
 import argparse
 
 import requests
 import msal
 
+try:
+     from zoneinfo import ZoneInfo
+except ImportError:
+     from backports.zoneinfo import ZoneInfo
+
 config = {
     "authority": "https://login.microsoftonline.com/propedal.at",
     "client_id": "52f192c4-875d-44a2-b28a-575e920225e5", # client public id (from azure web interface)#"da3fc28c-5fcf-4884-9477-903a4420cc3d",
@@ -16,6 +20,7 @@ config = {
 USER_ID = "simone.profus@propedal.at" # user with calendar #"2af02ca1-77fc-46fd-90af-c754306081cb" # 
 CALENDAR_ID = "AAMkADY0MDg1MTVjLTg5ZjItNGQxYS04MGQ3LWY2NjJmYjM0YmZhOQBGAAAAAADXD7SdVoWYQI4RYXbBumMEBwAf_ngZxs71RonY3GuLL8TVAAAAAAEGAAAf_ngZxs71RonY3GuLL8TVAADHFxN2AAA=" # calendar id -  determined by /users/id/calendars
 
+WEEKDAYS= {0:"Mo", 1:"Di", 2:"Mi", 3:"Do", 4: "Fr", 5:"Sa", 6: "So"}
 # Optional logging
 logging.basicConfig(format='%(asctime)s,%(msecs)d %(levelname)-4s [%(filename)s:%(lineno)d] %(message)s',
     datefmt='%Y-%m-%d:%H:%M:%S',
@@ -54,7 +59,7 @@ def get_access_token():
         logging.error(result.get("error"))
         logging.error(result.get("error_description"))
         logging.error(result.get("correlation_id"))  # You may need this when reporting a bug
-        raise TokenError()
+        raise AssertionError("No access token present")
 
     return result
 
@@ -78,12 +83,26 @@ def get_future_calendar_events():
 
     token = get_access_token()
 
-    ret = execute_user_request(token, f"calendars/{CALENDAR_ID}/calendarview{filter}")
-    return ret.get("value", ret)
+    return execute_user_request(token, f"calendars/{CALENDAR_ID}/calendarview{filter}")
 
-    if val is not None:
+def convert_datetimes(events):
+    for event in events: 
+
+        start_date_time = datetime.fromisoformat(event["start"]["dateTime"][:-1]) \
+            .replace(tzinfo=ZoneInfo('UTC')).astimezone(ZoneInfo('localtime'))
+
+        stop_date_time = datetime.fromisoformat(event["end"]["dateTime"][:-1]) \
+            .replace(tzinfo=ZoneInfo('UTC')).astimezone(ZoneInfo('localtime'))
+
+        event["start"]["date"] = start_date_time.strftime("%d.%m.%Y")
+        event["start"]["time"] = start_date_time.strftime("%H:%M:%S")
+        event["end"]["date"] = stop_date_time.strftime("%d.%m.%Y")
+        event["end"]["time"] = stop_date_time.strftime("%H:%M:%S")
+        event["duration"] = str(stop_date_time - start_date_time)[:-3]
+        event["weekday"] = WEEKDAYS[start_date_time.weekday()]
+
+    return events
 
-        return val 
 
 if __name__ == "__main__":
 
@@ -105,10 +124,17 @@ if __name__ == "__main__":
         print(json.dumps(cal_name_id, indent=2))
     
     if args.show_event_entries or args.show_events:
-        events= get_future_calendar_events()
+        events= get_future_calendar_events().get("value")
         
     if args.show_event_entries:
         print(json.dumps(list(events)[0].keys(), indent=2))
 
     if args.show_events:
-        print(json.dumps([(e["subject"], e["start"]) for e in events], indent=2))
+        print(json.dumps(events, indent=2))
+
+        convert_datetimes(events)
+
+        print(json.dumps([(e["subject"], e["start"], e["duration"]) for e in events], indent=2))
+
+
+    print("Done.")

templates/index.html

@@ -2,15 +2,24 @@
 
 {% block content %}
     <h1>{% block title %} Welcome {% endblock %}</h1>
-    {% for event in events %}
-      <a>
-          <h2>{{ event['subject'] }}</h2>
-      </a>
-      <span class="badge badge-primary">{{ event["start"] }}</span>
+    {% set ns = namespace(last_date='...') %}      
+
+    {% for event in events %}
+      
+        <a>
+            {% if ns.last_date != event["start"]["date"] %}
+                <hr>
+                <hr>
+                <h2>{{event["weekday"] + " " + event["start"]["date"] }}</h2>
+            {% endif %}
+            <span class="badge badge-primary">{{ event["start"]["time"] }}</span>
+            <span class="badge badge-primary">{{ event["duration"] }}</span>
+
+            
+            <h1>{{ event['subject'] }}</h1>
+        </a>
+      
+    {% set ns.last_date = event["start"]["date"] %}
 
-      <a>
-          <span class="badge badge-warning">Edit</span>
-      </a>
-      <hr> 
     {% endfor %}
 {% endblock %}