[discussion] date server side time zone information

bundles/af-core/src/main/java/com/adobe/cq/forms/core/components/internal/models/v1/form/DateTimeImpl.java

@@ -17,6 +17,7 @@
 package com.adobe.cq.forms.core.components.internal.models.v1.form;
 
 import java.time.OffsetDateTime;
+import java.time.ZoneId;
 import java.time.format.DateTimeFormatter;
 import java.util.Map;
 
@@ -99,4 +100,17 @@ public Object[] getDefault() {
         return defaultValue != null ? defaultValue.clone() : null;
     }
 
+    /**
+     * Returns the server timezone identifier for client-side consumption.
+     *
+     * @return server timezone identifier (e.g., "America/New_York", "Asia/Kolkata")
+     * @since com.adobe.cq.forms.core.components.models.form 5.12.0
+     */
+    @Override
+    public String getServerTimezone() {
+        ZoneId serverZone = ZoneId.systemDefault();
+
+        return serverZone.getId();
+    }
+
 }

bundles/af-core/src/main/java/com/adobe/cq/forms/core/components/models/form/DateTime.java

@@ -19,12 +19,23 @@
 
 import org.osgi.annotation.versioning.ConsumerType;
 
+import com.fasterxml.jackson.annotation.JsonIgnore;
+
 /**
- * Interface for {@code Password} Sling Model used for the {@code /apps/core/fd/components/form/password/v1/password} component.
+ * Interface for {@code DateTime} Sling Model used for the {@code /apps/core/fd/components/form/datetime/v1/datetime} component.
  *
  * @since com.adobe.cq.forms.core.components.models.form 5.12.0
  */
 @ConsumerType
 public interface DateTime extends Field, DateTimeConstraint {
 
+    /**
+     * Returns the server timezone identifier for client-side consumption.
+     *
+     * @return server timezone identifier (e.g., "America/New_York", "Asia/Kolkata")
+     * @since com.adobe.cq.forms.core.components.models.form 5.12.0
+     */
+    @JsonIgnore
+    String getServerTimezone();
+
 }

bundles/af-core/src/test/java/com/adobe/cq/forms/core/components/internal/models/v1/form/DateTimeImplTest.java

@@ -35,6 +35,8 @@
 import io.wcm.testing.mock.aem.junit5.AemContextExtension;
 
 import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertNotNull;
 
 @ExtendWith(AemContextExtension.class)
 public class DateTimeImplTest {
@@ -71,7 +73,15 @@ void testGetLabel() {
     void testGetName() {
         DateTime datetime = Utils.getComponentUnderTest(PATH_DATETIME_CUSTOMIZED, DateTime.class, context);
         assertEquals("abc", datetime.getName());
+    }
+
+    @Test
+    void testGetServerTimezone() {
+        DateTime dateTime = Utils.getComponentUnderTest(PATH_DATETIME_CUSTOMIZED, DateTime.class, context);
+        String timezone = dateTime.getServerTimezone();
 
+        assertNotNull(timezone);
+        assertFalse(timezone.isEmpty());
     }
 
     @Test

ui.af.apps/src/main/content/jcr_root/apps/core/fd/components/form/datetime/v1/datetime/README.md

@@ -42,6 +42,31 @@ The following properties are written to JCR for this Form Date & Time component
 11. './maximumMessage' - defines the maximum date and time message that will come when the selected date and time is after the maximum date and time
 12. './default' - defines the default date and time that will be selected when the form is loaded
 
+## Server Timezone Information
+
+The component exposes server timezone information via data attributes for client-side consumption:
+
+### Data Attributes Available
+- `data-server-timezone-id` - Server timezone identifier (e.g., "America/New_York")
+
+### Getting Current Date in Server Timezone
+
+```javascript
+// Get server timezone info from the datetime component
+const datetimeComponent = document.querySelector('.cmp-adaptiveform-datetime');
+const serverTimezoneId = datetimeComponent.dataset.serverTimezoneId;
+
+// Get current date in server timezone
+function getCurrentDateInServerTimezone() {
+    const now = new Date();
+    const serverDate = new Date(now.toLocaleString("en-US", {timeZone: serverTimezoneId}));
+    return serverDate.toISOString().slice(0, 16); // Format: YYYY-MM-DDTHH:mm
+}
+
+// Set current date as default value
+const currentServerDate = getCurrentDateInServerTimezone();
+```
+
 ## Client Libraries
 The component provides a `core.forms.components.datetime.v1.runtime` client library category that contains the Javascript runtime for the component.
 It should be added to a relevant site client library using the `embed` property.

ui.af.apps/src/main/content/jcr_root/apps/core/fd/components/form/datetime/v1/datetime/datetime.html

@@ -30,7 +30,8 @@
      data-cmp-readonly="${datetime.readOnly ? 'true' : 'false'}"
      id="${datetime.id}"
      data-cmp-adaptiveformcontainer-path="${formstructparser.formContainerPath}"
-     data-sly-test.widgetId="${datetime.id}-widget">
+     data-sly-test.widgetId="${datetime.id}-widget"
+     data-server-timezone-id="${datetime.serverTimezone}">
     <div class="cmp-adaptiveform-datetime__label-container">
       <div data-sly-call="${label.label @componentId=widgetId, labelValue=datetime.label.value, labelVisible=datetime.label.visible, bemBlock='cmp-adaptiveform-datetime'}" data-sly-unwrap></div>
       <div data-sly-call="${questionMark.questionMark @componentId=datetime.id, longDescription=datetime.description, bemBlock='cmp-adaptiveform-datetime'}" data-sly-unwrap></div>