From b74cdf4f55b08ffffc13eab093b69249200b4d0a Mon Sep 17 00:00:00 2001
From: Jonathan Weth <git@jonathanweth.de>
Date: Sun, 19 Jan 2020 14:01:57 +0100
Subject: [PATCH] Add get_prev_relevant_day
---
aleksis/apps/chronos/min_max.py | 17 +++++++++++++++++
1 file changed, 17 insertions(+)
diff --git a/aleksis/apps/chronos/min_max.py b/aleksis/apps/chronos/min_max.py
index 254183d6..8d8d60c2 100644
--- a/aleksis/apps/chronos/min_max.py
+++ b/aleksis/apps/chronos/min_max.py
@@ -41,3 +41,20 @@ def get_next_relevant_day(day: Optional[date] = None, time: Optional[time] = Non
day = cw[weekday_min_]
return day
+
+
+def get_prev_relevant_day(day: Optional[date] = None) -> date:
+ """ Returns previous day with lessons depending on date """
+
+ if day is None:
+ day = timezone.now().date()
+
+ cw = CalendarWeek.from_date(day)
+
+ if day.weekday() > weekday_max:
+ day = cw[weekday_max]
+ elif day.weekday() < weekday_min_:
+ cw -= 1
+ day = cw[weekday_max]
+
+ return day
--
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