From b9a3dc795b7468a75d9e69c5d11e2eb25376f095 Mon Sep 17 00:00:00 2001
From: karwosts <32912880+karwosts@users.noreply.github.com>
Date: Fri, 9 Jan 2026 11:30:09 -0800
Subject: [PATCH] Duration selector: migrate legacy duration formats (#28880)

---
 .../ha-selector/ha-selector-duration.ts       | 38 ++++++++++++++++++-
 1 file changed, 36 insertions(+), 2 deletions(-)

diff --git a/src/components/ha-selector/ha-selector-duration.ts b/src/components/ha-selector/ha-selector-duration.ts
index 7fa96adf3e..c38c7dcd56 100644
--- a/src/components/ha-selector/ha-selector-duration.ts
+++ b/src/components/ha-selector/ha-selector-duration.ts
@@ -1,3 +1,4 @@
+import memoizeOne from "memoize-one";
 import { html, LitElement } from "lit";
 import { customElement, property } from "lit/decorators";
 import type { DurationSelector } from "../../data/selector";
@@ -11,7 +12,10 @@ export class HaTimeDuration extends LitElement {
 
   @property({ attribute: false }) public selector!: DurationSelector;
 
-  @property({ attribute: false }) public value?: HaDurationData;
+  @property({ attribute: false }) public value?:
+    | HaDurationData
+    | string
+    | number;
 
   @property() public label?: string;
 
@@ -21,12 +25,42 @@ export class HaTimeDuration extends LitElement {
 
   @property({ type: Boolean }) public required = true;
 
+  private _data = memoizeOne(
+    (value?: HaDurationData | string | number): HaDurationData | undefined => {
+      if (typeof value === "number") {
+        return { seconds: value };
+      }
+      if (typeof value === "string") {
+        const negative = value.trim()[0] === "-";
+        const parts = value
+          .split(":")
+          .map((p) => (negative && p ? -Math.abs(Number(p)) : Number(p)));
+
+        if (parts.length === 1) {
+          return { seconds: parts[0] };
+        }
+        if (parts.length === 2) {
+          return { hours: parts[0], minutes: parts[1] };
+        }
+        if (parts.length === 3) {
+          return {
+            hours: parts[0],
+            minutes: parts[1],
+            seconds: parts[2],
+          };
+        }
+        return undefined;
+      }
+      return value;
+    }
+  );
+
   protected render() {
     return html`
       <ha-duration-input
         .label=${this.label}
         .helper=${this.helper}
-        .data=${this.value}
+        .data=${this._data(this.value)}
         .disabled=${this.disabled}
         .required=${this.required}
         .enableDay=${this.selector.duration?.enable_day}