From 2ff0cb58bc0ecc02f26b218beb7950ce097e6981 Mon Sep 17 00:00:00 2001
From: "libe.net" <36338790+boern99@users.noreply.github.com>
Date: Fri, 27 Dec 2024 10:35:00 +0100
Subject: [PATCH] Fix Energy-Dashboard unexpected Period Calculation (#23458)

* if not whole month, better use days for the period

* fix Type undefined error

* Update src/data/energy.ts

Co-authored-by: Petar Petrov <MindFreeze@users.noreply.github.com>

---------

Co-authored-by: Petar Petrov <MindFreeze@users.noreply.github.com>
---
 src/data/energy.ts | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/data/energy.ts b/src/data/energy.ts
index 5e082ac675..8cee433211 100644
--- a/src/data/energy.ts
+++ b/src/data/energy.ts
@@ -401,7 +401,13 @@ const getEnergyData = async (
 
   const dayDifference = differenceInDays(end || new Date(), start);
   const period =
-    dayDifference > 35 ? "month" : dayDifference > 2 ? "day" : "hour";
+    isFirstDayOfMonth(start) &&
+    (!end || isLastDayOfMonth(end)) &&
+    dayDifference > 35
+      ? "month"
+      : dayDifference > 2
+        ? "day"
+        : "hour";
 
   const lengthUnit = hass.config.unit_system.length || "";
   const energyUnits: StatisticsUnitConfiguration = {