From 3c95b7506ba05c01d673a74ea4270a855405acac Mon Sep 17 00:00:00 2001
From: Matthias Hochmeister <matthias.hochmeister@apple.com>
Date: Thu, 26 Mar 2026 13:01:59 +0100
Subject: [PATCH] update

---
 .../src/components/shared/GermanDateField.tsx | 113 ++++--------------
 1 file changed, 22 insertions(+), 91 deletions(-)

diff --git a/frontend/src/components/shared/GermanDateField.tsx b/frontend/src/components/shared/GermanDateField.tsx
index 8650dd8..552a5fd 100644
--- a/frontend/src/components/shared/GermanDateField.tsx
+++ b/frontend/src/components/shared/GermanDateField.tsx
@@ -1,32 +1,21 @@
-import { useState, useRef } from 'react';
 import TextField, { type TextFieldProps } from '@mui/material/TextField';
-import InputAdornment from '@mui/material/InputAdornment';
-import IconButton from '@mui/material/IconButton';
-import Box from '@mui/material/Box';
-import CalendarMonth from '@mui/icons-material/CalendarMonth';
-import {
-  toGermanDate,
-  toGermanDateTime,
-  fromGermanDate,
-  fromGermanDateTime,
-} from '../../utils/dateInput';
+import { useTheme } from '@mui/material/styles';
 
 export type GermanDateMode = 'date' | 'datetime';
 
 export interface GermanDateFieldProps extends Omit<TextFieldProps, 'value' | 'onChange' | 'type'> {
   /** ISO date (YYYY-MM-DD) or datetime (YYYY-MM-DDTHH:MM) string */
   value?: string | null;
-  /** Called with ISO date/datetime string whenever value changes to a valid date */
+  /** Called with ISO date/datetime string on change */
   onChange?: (isoValue: string) => void;
   mode?: GermanDateMode;
 }
 
 /**
- * A MUI TextField that:
- *  - Displays dates in German format (TT.MM.JJJJ / TT.MM.JJJJ HH:MM)
- *  - Accepts free-text entry in that format
- *  - Has a calendar icon that opens the native browser date picker as a popup
- *  - onChange fires with an ISO string whenever the entered value is valid
+ * Themed date / datetime input that:
+ *  - Uses the native browser date picker (locale-aware → shows DD.MM.YYYY in German browsers)
+ *  - Properly supports dark / light mode via CSS colorScheme
+ *  - Thin wrapper: all MUI TextField props work as expected
  */
 export default function GermanDateField({
   value,
@@ -35,84 +24,26 @@ export default function GermanDateField({
   sx,
   ...rest
 }: GermanDateFieldProps) {
-  // localValue overrides the displayed text while the user is typing
-  const [localValue, setLocalValue] = useState<string | null>(null);
-  const hiddenRef = useRef<HTMLInputElement>(null);
-
-  const displayed =
-    localValue ?? (mode === 'date' ? toGermanDate(value) : toGermanDateTime(value));
-
-  function handleTextChange(raw: string) {
-    setLocalValue(raw);
-    const iso = mode === 'date' ? fromGermanDate(raw) : fromGermanDateTime(raw);
-    if (iso) {
-      onChange?.(iso);
-      setLocalValue(null);
-    }
-  }
-
-  function handleBlur() {
-    // Revert to the last valid formatted value if the text is incomplete
-    setLocalValue(null);
-  }
-
-  function handlePickerChange(nativeVal: string) {
-    if (!nativeVal) return;
-    if (mode === 'date') {
-      onChange?.(nativeVal);
-    } else {
-      // Preserve current time portion if available, default to 08:00
-      const time = value?.substring(11, 16) || '08:00';
-      onChange?.(`${nativeVal}T${time}`);
-    }
-  }
+  const theme = useTheme();
+  const isDark = theme.palette.mode === 'dark';
 
+  const nativeType = mode === 'date' ? 'date' : 'datetime-local';
   const nativeValue =
     mode === 'date' ? (value?.substring(0, 10) || '') : (value?.substring(0, 16) || '');
 
   return (
-    <Box sx={{ position: 'relative', display: 'inline-flex', width: rest.fullWidth ? '100%' : undefined, ...sx }}>
-      <TextField
-        {...rest}
-        sx={{ width: '100%' }}
-        value={displayed}
-        onChange={(e) => handleTextChange(e.target.value)}
-        onBlur={handleBlur}
-        placeholder={mode === 'date' ? 'TT.MM.JJJJ' : 'TT.MM.JJJJ HH:MM'}
-        InputLabelProps={{ shrink: true, ...rest.InputLabelProps }}
-        InputProps={{
-          endAdornment: (
-            <InputAdornment position="end">
-              <IconButton
-                size="small"
-                tabIndex={-1}
-                edge="end"
-                onClick={() => hiddenRef.current?.showPicker?.()}
-              >
-                <CalendarMonth fontSize="small" />
-              </IconButton>
-            </InputAdornment>
-          ),
-          ...rest.InputProps,
-        }}
-      />
-      {/* Hidden native input used solely to open the browser's date picker popup */}
-      <input
-        ref={hiddenRef}
-        type={mode === 'date' ? 'date' : 'datetime-local'}
-        value={nativeValue}
-        onChange={(e) => handlePickerChange(e.target.value)}
-        tabIndex={-1}
-        style={{
-          position: 'absolute',
-          bottom: 0,
-          left: 0,
-          opacity: 0,
-          width: '100%',
-          height: '100%',
-          pointerEvents: 'none',
-        }}
-      />
-    </Box>
+    <TextField
+      {...rest}
+      type={nativeType}
+      value={nativeValue}
+      onChange={(e) => onChange?.(e.target.value)}
+      InputLabelProps={{ shrink: true, ...rest.InputLabelProps }}
+      sx={{
+        '& input': {
+          colorScheme: isDark ? 'dark' : 'light',
+        },
+        ...sx,
+      }}
+    />
   );
 }