From 05d1d67936a0b73ae32a018ae441d896944dd6df Mon Sep 17 00:00:00 2001
From: Fenris Wolf <fenris@folksprak.org>
Date: Tue, 31 Mar 2026 19:15:57 +0200
Subject: [PATCH] [fix] fallback-datetime-input

---
 source/helpers.ts | 127 +++++++++++++++++++++++++++++++---------------
 1 file changed, 86 insertions(+), 41 deletions(-)

diff --git a/source/helpers.ts b/source/helpers.ts
index 491a5c1..c475413 100644
--- a/source/helpers.ts
+++ b/source/helpers.ts
@@ -316,7 +316,11 @@ namespace _dali.helpers
 					date : string;
 					time : string;
 				},
-				lib_plankton.pit.type_datetime
+				(
+					null
+					|
+					lib_plankton.pit.type_datetime
+				)
 			>(
 				new lib_plankton.zoo_input.class_input_group(
 					[
@@ -343,50 +347,91 @@ namespace _dali.helpers
 					]
 				),
 				(inner) => {
-					const date_parts : Array<string> = inner.date.split("-");
-					const time_parts : Array<string> = inner.time.split(":");
-					const datetime_raw : lib_plankton.pit.type_datetime = {
-						"timezone_shift": 0,
-						"date": {
-							"year": parseInt(date_parts[0]),
-							"month": parseInt(date_parts[1]),
-							"day": parseInt(date_parts[2]),
-						},
-						"time": {
-							"hour": parseInt(time_parts[0]),
-							"minute": parseInt(time_parts[1]),
-							"second": 0,
-						},
-					};
-					return {
-						"timezone_shift": (
-							_dali.conf.get().misc.use_central_europe_specific_datetime_inputs
+					if (inner === null)
+					{
+						return null;
+					}
+					else
+					{
+						const date_parts : Array<string> = ((inner.date === "") ? null : inner.date.split("-"));
+						const time_parts : (null | Array<string>) = ((inner.time === "") ? null : inner.time.split(":"));
+						const datetime_raw : (null | lib_plankton.pit.type_datetime) = (
+							(date_parts === null)
 							?
-							lib_plankton.pit.timezone_shift_ce(lib_plankton.pit.from_datetime(datetime_raw))
+							null
 							:
-							0
-						),
-						"date": datetime_raw.date,
-						"time": datetime_raw.time,
-					};
+							{
+								"timezone_shift": 0,
+								"date": {
+									"year": parseInt(date_parts[0]),
+									"month": parseInt(date_parts[1]),
+									"day": parseInt(date_parts[2]),
+								},
+								"time": (
+									(time_parts === null)
+									?
+									null
+									:
+									{
+										"hour": parseInt(time_parts[0]),
+										"minute": parseInt(time_parts[1]),
+										"second": 0,
+									}
+								),
+							}
+						);
+						return (
+							(datetime_raw === null)
+							?
+							null
+							:
+							{
+								"timezone_shift": (
+									_dali.conf.get().misc.use_central_europe_specific_datetime_inputs
+									?
+									lib_plankton.pit.timezone_shift_ce(lib_plankton.pit.from_datetime(datetime_raw))
+									:
+									0
+								),
+								"date": datetime_raw.date,
+								"time": datetime_raw.time,
+							}
+						);
+					}
 				},
 				(outer) => {
-					return {
-						"date": lib_plankton.string.coin(
-							"{{year}}-{{month}}-{{day}}",
-							{
-								"year": outer.date.year.toFixed(0).padStart(4, "0"),
-								"month": outer.date.month.toFixed(0).padStart(2, "0"),
-								"day": outer.date.day.toFixed(0).padStart(2, "0"),
-							}
-						),
-						"time": lib_plankton.string.coin(
-							"{{hour}}:{{minute}}",
-							{
-								"hour": outer.time.hour.toFixed(0).padStart(2, "0"),
-								"minute": outer.time.minute.toFixed(0).padStart(2, "0"),
-							}
-						),
+					if (outer === null)
+					{
+						return {
+							"date": "",
+							"time": "",
+						};
+					}
+					else
+					{
+						return {
+							"date": lib_plankton.string.coin(
+								"{{year}}-{{month}}-{{day}}",
+								{
+									"year": outer.date.year.toFixed(0).padStart(4, "0"),
+									"month": outer.date.month.toFixed(0).padStart(2, "0"),
+									"day": outer.date.day.toFixed(0).padStart(2, "0"),
+								}
+							),
+							"time": (
+								(outer.time === null)
+								?
+								""
+								:
+								lib_plankton.string.coin(
+									"{{hour}}:{{minute}}",
+									{
+										"hour": outer.time.hour.toFixed(0).padStart(2, "0"),
+										"minute": outer.time.minute.toFixed(0).padStart(2, "0"),
+									}
+								)
+							),
+						};
 					}
 				}
 			)