only show attend button if user is not already attending

app.py

@@ -2,7 +2,7 @@ import os
 import logging
 import json
 
-from flask import Flask, render_template, g, request, url_for, flash, redirect
+from flask import Flask, current_app, render_template, g, request, url_for, flash, redirect
 from werkzeug.exceptions import abort
 
 import calendar_interface
@@ -21,8 +21,9 @@ app.teardown_appcontext(db.close_db)
 app.cli.add_command(db.init_db_command)
 app.register_blueprint(auth.bp)
 
-# first time start up masl token acquire for test purposes (raises if not successful)
-calendar_interface.get_access_token()
+# first time start up msal token acquire for test purposes (raises if not successful)
+if not (app.config["DEBUG"] or app.config["TESTING"]):
+    calendar_interface.get_access_token()
 
 @app.route('/')
 @auth.login_required
@@ -30,7 +31,11 @@ def index():
 
     events = calendar_interface.get_future_calendar_events().get("value")
     calendar_interface.convert_datetimes(events)
-
+    # Check current users attendance in event
+    for event in events:
+        ret = calendar_interface.check_attendee_presence(event, g.user["email"])
+        event["user_attends"] = ret
+        logging.info("User %s attending: %s", g.user["email"], ret)
     if events is None:
         abort(404)
     else:

auth.py

@@ -53,7 +53,7 @@ def register():
                 confirmation_add = current_app.config.get("CONFIRMATATION_EMAIL_ADD", email)     
                 calendar_interface.send_mail(confirmation_add, subject, content)
 
-                flash("Registrierung erfolgreich.")
+                flash("Registrierung erfolgreich. Auf Freischaltung warten.")
                 return redirect(url_for("index"))
 
         flash(error)

calendar_interface.py

@@ -165,6 +165,12 @@ def delte_attendee(data, email):
             del data["attendees"][i]
             break
 
+def check_attendee_presence(data, email):
+    for d in data["attendees"]:
+        if d["emailAddress"]["address"] == email:
+            return True
+
+    return False
 
 if __name__ == "__main__":
 

templates/index.html

@@ -13,12 +13,15 @@
             {% endif %}
             <h2>{{ event['subject'] }}</h2>
 
-            <a href="{{ url_for('attend', id=event['id']) }}">
-                <span class="badge badge-warning">Teilnehmen</span>
-            </a>
-            <a href="{{ url_for('unattend', id=event['id']) }}">
-                <span class="badge badge-warning">Abmelden</span>
-            </a>
+            {% if not event["user_attends"] %}
+                <a href="{{ url_for('attend', id=event['id']) }}">
+                    <span class="badge badge-warning">Teilnehmen</span>
+                </a>
+            {% else %}
+                {# <a href="{{ url_for('unattend', id=event['id']) }}"> #}
+                    <span class="badge badge-success">Nehme Teil</span>
+                {# </a> #}
+            {% endif %}
 
             <span class="badge badge-primary">{{ event["start"]["time"] }}</span>
             <span class="badge badge-primary">{{ event["duration"] }}</span>