adds ical input to calendar html templates and implements data handling

- the icalHandler in the backend is used in two instances. First, when
  the user adds a new ical calendar into the database, routes.py passes
  the information (name and url) to the ical Handler. The calendars are
  saved in the database as type 'ical'.

  Then, when a connected device pulls current events, all the calendars
  which are of type 'ical' are pulled and parsed for current events.
  See the backend commit for details on what happens there.

- All google Calendar related functions now have an additional check,
  to make sure that the calendar they are working on is of type 'Google'.

backend

@@ -1 +1 @@
-Subproject commit fec09edb888013c5cb9c062d5cdb2220bc1a217d
+Subproject commit 056779f7d26746cf54e73156e0a3909ecf058298

docker/calendarwatch/Dockerfile

@@ -2,7 +2,7 @@ FROM python:3.8-slim-buster
 RUN apt-get update && apt-get upgrade
 RUN pip3 install flask Flask-SQLAlchemy flask_migrate flask_login flask_wtf python-dotenv
 RUN apt-get install gcc libpcre3 libpcre3-dev libmariadbclient-dev -y
-RUN pip3 install uwsgi email-validator RandomWords icalevents
+RUN pip3 install uwsgi email-validator RandomWords ics
 RUN pip3 install google google-oauth google-auth-oauthlib google-api-python-client mysqlclient
 COPY docker-entrypoint.sh /usr/local/bin/
 EXPOSE 8084

server/forms.py

@@ -50,6 +50,7 @@ class DeviceForm(FlaskForm):
 
 class CalendarForm(FlaskForm):
     iCalURL = StringField('New ical URL', validators=[DataRequired()])
+    calName = StringField('Calendar Name', validators=[DataRequired()])
     submit = SubmitField('Add URL')
 
     def validate_iCalURL (self, iCalURL):

server/googleHandler.py

@@ -121,19 +121,23 @@ def deleteAccount(user):
 
 
 def fetchCalendarEvents(user, calendars, startDate, endDate):
+   
+    service = None
+    if user.google_token is not None:
+        client_token = GC.build_credentials(user.google_token.token,
+                                            user.google_token.refresh_token)
+        credentials = google.oauth2.credentials.Credentials(**client_token)
 
-    client_token = GC.build_credentials(user.google_token.token,
+        service = build(GC.API_SERVICE_NAME, GC.API_VERSION, credentials=credentials)
-                                        user.google_token.refresh_token)
-    credentials = google.oauth2.credentials.Credentials(**client_token)
-
-    service = build(GC.API_SERVICE_NAME, GC.API_VERSION, credentials=credentials)
     
     all_events = []
     for calendar in calendars:
-        if calendar.toggle == "True" and calendar.calType == "Google":
+        if (calendar.toggle == "True" and 
+            calendar.calendar_type == "Google" and 
+            service != None):
             event_result = service.events().list(calendarId=calendar.calendar_id, 
-                                                 timeMin=startDate,
+                                                 timeMin=startDate.isoformat(),
-                                                 timeMax=endDate,
+                                                 timeMax=endDate.isoformat(),
                                                  maxResults=10, 
                                                  singleEvents=True,
                                                  orderBy='startTime').execute()
@@ -156,7 +160,10 @@ def fetchCalendarEvents(user, calendars, startDate, endDate):
                 
                 all_events.append(newEvent)
 
-    colors = service.colors().get().execute()
+    if service != None:
+        colors = service.colors().get().execute()
+    else:
+        colors = None
 
     return all_events, colors
 

server/routes.py

@@ -17,6 +17,7 @@ from flask_login import (
 from random_words import RandomWords
 import requests
 
+import backend.icalHandler as ical
 import server.googleHandler as google
 
 from server import login_manager, app, db
@@ -105,6 +106,9 @@ def calendar():
         if form.validate_on_submit():
             # try to add the submitted ical as a calendar
             print(form.iCalURL.data, flush=True)
+           
+            
+            ical.icalToCalendarDb(form.iCalURL.data, form.calName.data, current_user)
 
         # otherwise it is a javascript POST
         else:
@@ -255,6 +259,7 @@ def downloader(device):
     # TODO only pass along google calendars form user
     startDate, endDate = backend.getTimeStamps()
     events, colors  = google.fetchCalendarEvents(request_user, request_user.calendars, startDate, endDate)
+    events.extend(ical.fetchCalendarEvents(request_user.calendars, startDate, endDate))
     calendarjson = backend.generateJsonFromCalendarEntries(events, colors) 
     return jsonify(calendarjson)
 

server/template/calendar.html

@@ -36,6 +36,8 @@
     <form action="" method="post">
     <div class="container grey" style="margin-top: 3rem;">
         <div>{{ form.hidden_tag() }}</div>
+        <div style="margin: 1rem">{{ form.calName.label }}</div>
+        <div style="margin: 1rem">{{ form.calName(size=24) }}</div>
         <div style="margin: 1rem">{{ form.iCalURL.label }}</div>
         <div style="margin: 1rem">{{ form.iCalURL(size=24) }}</div>
         <div style="with: 8rem; margin: 1rem">{{ form.submit() }}</div>