Allow user to specify courses and types to exclude

app.py

@@ -7,9 +7,9 @@ app = Flask(__name__)
 
 EXCLUDED_COURSES = os.environ.get('COURSES', '').split(',')
 EXCLUDED_TYPES = os.environ.get('TYPES', '').split(',')
+
 YEAR = os.environ.get('YEAR', '4')
 GROUP = os.environ.get('GROUP', '1')
-
 ALLOWED_YEARS = os.environ.get('ALLOWED_YEARS', '3,4,5').split(',')
 ALLOWED_GROUPS = os.environ.get('ALLOWED_GROUPS', '1,2,3').split(',')
 
@@ -59,12 +59,35 @@ def hello():
 
 
 def should_add(event):
+    """
+    Determines whether an event should be added to the returned calendar or not.
+
+    :param event: The event to determine if should be added or not.
+    :type event: Component
+    :return: True if the event should be added, False otherwise.
+    :rtype: bool
+    """
     course_code = event['SUMMARY'].split('-')[1].split('/')[0]
     course_type = event['SUMMARY'].split('/')[1].split('_')[1]
 
+    # Get user specified excluded courses/types if exist
+    excluded_courses = request.args.get('excluded_courses', '')
+    excluded_types = request.args.get('excluded_types', '')
+
+    if excluded_courses == '':
+        excluded_courses = EXCLUDED_COURSES
+    else:
+        excluded_courses = excluded_courses.split(',')
+
+    if excluded_types == '':
+        excluded_types = EXCLUDED_TYPES
+    else:
+        excluded_types = excluded_types.split(',')
+
+    # Filter against courses and types
     return \
-        course_code not in EXCLUDED_COURSES \
-        and course_type not in EXCLUDED_TYPES
+        course_code not in excluded_courses \
+        and course_type not in excluded_types
 
 if __name__ == "__main__":
     port = int(os.environ.get('PORT', 5000))