From 532f86885e9f58cf3f33a6ba9a37153d9878448b Mon Sep 17 00:00:00 2001
From: alsami <al.khatib.sami1990@gmail.com>
Date: Sat, 9 Jan 2021 14:06:49 +0100
Subject: [PATCH] fix: make sure refresh-worker executes next on full hour of
 day

---
 src/Covid19Api.Worker/DataRefreshWorker.cs | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/Covid19Api.Worker/DataRefreshWorker.cs b/src/Covid19Api.Worker/DataRefreshWorker.cs
index c02f6d9..8a45ad5 100644
--- a/src/Covid19Api.Worker/DataRefreshWorker.cs
+++ b/src/Covid19Api.Worker/DataRefreshWorker.cs
@@ -57,11 +57,20 @@ private DateTime CalculateInitialExecutionTime()
         private DateTime CalculateNextRun()
         {
             var nextExecution = DateTime.UtcNow.AddHours(4);
+            
             if (nextExecution.Day != DateTime.UtcNow.Day)
             {
                 nextExecution = DateTime.UtcNow.Date.AddDays(1);
             }
 
+            var hourDiffTillNextDay = 24 - nextExecution.Hour;
+
+            if (hourDiffTillNextDay <= 4)
+            {
+                nextExecution = nextExecution.AddHours(hourDiffTillNextDay - 1);
+            }
+            
+
             this.logger.LogInformation("Next refresh run {nextRun}", nextExecution.ToString("O"));
             return nextExecution;
         }