Adding a last run tracking file to be able to created skipped days tasks

.gitignore

@@ -1,4 +1,5 @@
 .idea/
+.last.run
 configuration.yml
 tasks.yml
 test/

main.py

@@ -1,12 +1,11 @@
 import datetime
+import os
 
-from caldav.lib.error import NotFoundError
-from caldav.objects import Todo
 from yaml import load, FullLoader
-import icalendar
 from icalendar.parser import Contentlines, Contentline
 from dateutil.rrule import rrule, FREQNAMES
 import caldav
+from caldav.lib.error import NotFoundError
 
 
 APP_ID = 'CaldavRecurringTask'
@@ -66,6 +65,9 @@ class Client:
         if self.calendar is None:
             raise LookupError('No calendar named "{}" found'.format(calendar_name))
 
+    def todos(self, include_completed=True):
+        return self.calendar.todos(include_completed=include_completed)
+
     def add_todo(self, new_task):
         self.calendar.add_todo(new_task.to_ical())
 
@@ -82,7 +84,17 @@ if __name__ == "__main__":
     with open('./configuration.yml', 'r') as configuration_file:
         conf = load(configuration_file.read(), Loader=FullLoader)
 
-    ref_date = datetime.date.today() + datetime.timedelta(days=2)
+    last_run_file_path = './.last.run'
+    if os.path.isfile(last_run_file_path):
+        with open(last_run_file_path, 'r') as last_run_file:
+            run_date_str = last_run_file.readline()
+            run_date = datetime.datetime.strptime(run_date_str, '%Y-%m-%d') + datetime.timedelta(days=1)
+            run_date = run_date.date()
+    else:
+        run_date = datetime.date.today()
+
+    while run_date <= datetime.date.today():
+        ref_date = run_date + datetime.timedelta(days=2)
         with open('tasks.yml', 'r') as content_file:
             tasks_conf = load(content_file.read(), Loader=FullLoader)
 
@@ -106,4 +118,8 @@ if __name__ == "__main__":
 
                     client.add_todo(task)
 
-    print('process finished: {} tasks created'.format(len(task_list)))
+        print('process finished for date {}: {} tasks created\n'.format(run_date, len(task_list)))
+        run_date = run_date + datetime.timedelta(days=1)
+
+    with open(last_run_file_path, 'w') as last_run_file:
+        last_run_file.write(str(datetime.date.today()))