Multi-timezone support in Angular

npm/ng-packs/packages/components/extensible/src/lib/components/extensible-table/extensible-table.component.html

@@ -49,18 +49,33 @@
         <ng-container *abpPermission="prop.permission; runChangeDetection: false">
           <ng-container *abpVisible="row['_' + prop.name]?.visible">
             @if (!row['_' + prop.name].component) {
-              <div
-                [innerHTML]="
+              @if (prop.type === 'datetime' || prop.type === 'date' || prop.type === 'time') {
+                <div
+                  [innerHTML]="
+                  !prop.isExtra
+                    ? (row['_' + prop.name]?.value | async | abpUtcToLocal:prop.type)
+                    : ('::' + (row['_' + prop.name]?.value | async | abpUtcToLocal:prop.type) | abpLocalization)
+                "
+                  (click)="
+                  prop.action && prop.action({ getInjected: getInjected, record: row, index: i })
+                "
+                  [ngClass]="entityPropTypeClasses[prop.type]"
+                  [class.pointer]="prop.action"
+                ></div>
+              } @else {
+                <div
+                  [innerHTML]="
                   !prop.isExtra
                     ? (row['_' + prop.name]?.value | async)
                     : ('::' + (row['_' + prop.name]?.value | async) | abpLocalization)
                 "
-                (click)="
+                  (click)="
                   prop.action && prop.action({ getInjected: getInjected, record: row, index: i })
                 "
-                [ngClass]="entityPropTypeClasses[prop.type]"
-                [class.pointer]="prop.action"
-              ></div>
+                  [ngClass]="entityPropTypeClasses[prop.type]"
+                  [class.pointer]="prop.action"
+                ></div>
+              }
             } @else {
               <ng-container
                 *ngComponentOutlet="

npm/ng-packs/packages/components/extensible/src/lib/components/extensible-table/extensible-table.component.ts

@@ -14,7 +14,7 @@ import {
   TemplateRef,
   TrackByFunction,
 } from '@angular/core';
-import { AsyncPipe, formatDate, NgComponentOutlet, NgTemplateOutlet } from '@angular/common';
+import { AsyncPipe, NgComponentOutlet, NgTemplateOutlet } from '@angular/common';
 
 import { Observable, filter, map } from 'rxjs';
 
@@ -24,13 +24,12 @@ import { NgxDatatableModule } from '@swimlane/ngx-datatable';
 import {
   ABP,
   ConfigStateService,
-  getShortDateFormat,
-  getShortDateShortTimeFormat,
-  getShortTimeFormat,
   ListService,
   LocalizationModule,
   PermissionDirective,
   PermissionService,
+  TimezoneService,
+  UtcToLocalPipe,
 } from '@abp/ng.core';
 import {
   AbpVisibleDirective,
@@ -64,6 +63,7 @@ const DEFAULT_ACTIONS_COLUMN_WIDTH = 150;
     NgxDatatableListDirective,
     PermissionDirective,
     LocalizationModule,
+    UtcToLocalPipe,
     AsyncPipe,
     NgTemplateOutlet,
     NgComponentOutlet,
@@ -77,6 +77,7 @@ export class ExtensibleTableComponent<R = any> implements OnChanges, AfterViewIn
   protected readonly cdr = inject(ChangeDetectorRef);
   protected readonly locale = inject(LOCALE_ID);
   protected readonly config = inject(ConfigStateService);
+  protected readonly timeZoneService = inject(TimezoneService);
   protected readonly entityPropTypeClasses = inject(ENTITY_PROP_TYPE_CLASSES);
   protected readonly permissionService = inject(PermissionService);
 
@@ -134,10 +135,6 @@ export class ExtensibleTableComponent<R = any> implements OnChanges, AfterViewIn
     (this.columnWidths as any) = widths;
   }
 
-  private getDate(value: Date | undefined, format: string | undefined) {
-    return value && format ? formatDate(value, format, this.locale) : '';
-  }
-
   private getIcon(value: boolean) {
     return value
       ? '<div class="text-success"><i class="fa fa-check" aria-hidden="true"></i></div>'
@@ -156,12 +153,6 @@ export class ExtensibleTableComponent<R = any> implements OnChanges, AfterViewIn
         switch (prop.type) {
           case ePropType.Boolean:
             return this.getIcon(value);
-          case ePropType.Date:
-            return this.getDate(value, getShortDateFormat(this.config));
-          case ePropType.Time:
-            return this.getDate(value, getShortTimeFormat(this.config));
-          case ePropType.DateTime:
-            return this.getDate(value, getShortDateShortTimeFormat(this.config));
           case ePropType.Enum:
             return this.getEnum(value, prop.enumList || []);
           default:

npm/ng-packs/packages/core/ng-package.json

@@ -9,6 +9,7 @@
     "angular-oauth2-oidc",
     "just-compare",
     "just-clone",
-    "ts-toolbelt"
+    "ts-toolbelt",
+    "luxon"
   ]
 }

npm/ng-packs/packages/core/package.json

@@ -11,7 +11,8 @@
     "just-clone": "^6.0.0",
     "just-compare": "^2.0.0",
     "ts-toolbelt": "^9.0.0",
-    "tslib": "^2.0.0"
+    "tslib": "^2.0.0",
+    "luxon": "^3.0.0"
   },
   "publishConfig": {
     "access": "public"

npm/ng-packs/packages/core/src/lib/core.module.ts

@@ -3,6 +3,7 @@ import {
   provideHttpClient,
   withInterceptorsFromDi,
   withXsrfConfiguration,
+  HTTP_INTERCEPTORS,
 } from '@angular/common/http';
 import { ModuleWithProviders, NgModule } from '@angular/core';
 import { FormsModule, ReactiveFormsModule } from '@angular/forms';
@@ -30,6 +31,7 @@ import { ShortTimePipe } from './pipes/short-time.pipe';
 import { ShortDatePipe } from './pipes/short-date.pipe';
 import { SafeHtmlPipe } from './pipes/safe-html.pipe';
 import { provideAbpCoreChild, provideAbpCore, withOptions } from './providers';
+import { UtcToLocalPipe } from './pipes';
 
 const standaloneDirectives = [
   AutofocusDirective,
@@ -72,6 +74,7 @@ const standaloneDirectives = [
     ReactiveFormsModule,
     RouterModule,
     LocalizationModule,
+    UtcToLocalPipe,
     ...standaloneDirectives,
   ],
   declarations: [

npm/ng-packs/packages/core/src/lib/interceptors/index.ts

@@ -1 +1,2 @@
 export * from './api.interceptor';
+export * from './timezone.interceptor';

npm/ng-packs/packages/core/src/lib/interceptors/timezone.interceptor.ts

@@ -0,0 +1,26 @@
+import { inject, Injectable } from '@angular/core';
+import { HttpEvent, HttpHandler, HttpInterceptor, HttpRequest } from '@angular/common/http';
+import { TimezoneService } from '../services';
+import { Observable } from 'rxjs';
+
+@Injectable({
+  providedIn: 'root',
+})
+export class TimezoneInterceptor implements HttpInterceptor {
+  protected readonly timezoneService = inject(TimezoneService);
+
+  intercept(req: HttpRequest<any>, next: HttpHandler): Observable<HttpEvent<any>> {
+    if (!this.timezoneService.isUtcClockEnabled) {
+      return next.handle(req);
+    }
+    const timezone = this.timezoneService.timezone;
+    if (timezone) {
+      req = req.clone({
+        setHeaders: {
+          __timezone: timezone,
+        },
+      });
+    }
+    return next.handle(req);
+  }
+}

npm/ng-packs/packages/core/src/lib/pipes/index.ts

@@ -5,3 +5,4 @@ export * from './to-injector.pipe';
 export * from './short-date.pipe';
 export * from './short-time.pipe';
 export * from './short-date-time.pipe';
+export * from './utc-to-local.pipe';

npm/ng-packs/packages/core/src/lib/pipes/utc-to-local.pipe.ts

@@ -0,0 +1,50 @@
+import { Pipe, PipeTransform, Injectable, inject, LOCALE_ID } from '@angular/core';
+import { ConfigStateService, LocalizationService, TimeService, TimezoneService } from '../services';
+import { getShortDateFormat, getShortDateShortTimeFormat, getShortTimeFormat } from '../utils';
+
+@Injectable()
+@Pipe({
+  name: 'abpUtcToLocal',
+})
+export class UtcToLocalPipe implements PipeTransform {
+  protected readonly timezoneService = inject(TimezoneService);
+  protected readonly timeService = inject(TimeService);
+  protected readonly configState = inject(ConfigStateService);
+  protected readonly localizationService = inject(LocalizationService);
+  protected readonly locale = inject(LOCALE_ID);
+
+  transform(
+    value: string | Date | null | undefined,
+    type: 'date' | 'datetime' | 'time',
+  ): string | Date {
+    if (!value) return '';
+
+    const date = new Date(value);
+    if (isNaN(date.getTime())) return '';
+
+    const format = this.getFormat(type);
+
+    try {
+      if (this.timezoneService.isUtcClockEnabled) {
+        const timeZone = this.timezoneService.timezone;
+        return this.timeService.formatDateWithStandardOffset(date, format, timeZone);
+      } else {
+        return this.timeService.formatWithoutTimeZone(date, format);
+      }
+    } catch (err) {
+      return value;
+    }
+  }
+
+  private getFormat(propType: 'date' | 'datetime' | 'time'): string {
+    switch (propType) {
+      case 'date':
+        return getShortDateFormat(this.configState);
+      case 'time':
+        return getShortTimeFormat(this.configState);
+      case 'datetime':
+      default:
+        return getShortDateShortTimeFormat(this.configState);
+    }
+  }
+}

npm/ng-packs/packages/core/src/lib/providers/core-module-config.provider.ts

@@ -1,6 +1,7 @@
 import { makeEnvironmentProviders, Provider, inject, provideAppInitializer } from '@angular/core';
 import { TitleStrategy } from '@angular/router';
 import {
+  HTTP_INTERCEPTORS,
   provideHttpClient,
   withInterceptorsFromDi,
   withXsrfConfiguration,
@@ -24,6 +25,7 @@ import { DEFAULT_DYNAMIC_LAYOUTS } from '../constants';
 import { LocalizationService, LocalStorageListenerService, AbpTitleStrategy } from '../services';
 import { DefaultQueueManager, getInitialData, localeInitializer } from '../utils';
 import { CookieLanguageProvider, IncludeLocalizationResourcesProvider, LocaleProvider } from './';
+import { TimezoneInterceptor } from '../interceptors';
 
 export enum CoreFeatureKind {
   Options,
@@ -128,6 +130,11 @@ export function provideAbpCore(...features: CoreFeature<CoreFeatureKind>[]) {
       provide: TitleStrategy,
       useExisting: AbpTitleStrategy,
     },
+    {
+      provide: HTTP_INTERCEPTORS,
+      useClass: TimezoneInterceptor,
+      multi: true,
+    },
   ];
 
   for (const feature of features) {

npm/ng-packs/packages/core/src/lib/services/index.ts

@@ -23,3 +23,5 @@ export * from './window.service';
 export * from './internet-connection-service';
 export * from './local-storage-listener.service';
 export * from './title-strategy.service';
+export * from './timezone.service';
+export * from './time.service';

npm/ng-packs/packages/core/src/lib/services/time.service.ts

@@ -0,0 +1,107 @@
+import { inject, Injectable, LOCALE_ID } from '@angular/core';
+import { DateTime } from 'luxon';
+
+@Injectable({
+  providedIn: 'root',
+})
+export class TimeService {
+  private locale = inject(LOCALE_ID);
+
+  /**
+   * Returns the current date and time in the specified timezone.
+   *
+   * @param zone - An IANA timezone name (e.g., 'Europe/Istanbul', 'UTC'); defaults to the system's local timezone.
+   * @returns A Luxon DateTime instance representing the current time in the given timezone.
+   */
+  now(zone = 'local'): DateTime {
+    return DateTime.now().setZone(zone);
+  }
+
+  /**
+   * Converts the input date to the specified timezone, applying any timezone and daylight saving time (DST) adjustments.
+   *
+   * This method:
+   * 1. Parses the input value into a Luxon DateTime object.
+   * 2. Applies the specified IANA timezone, including any DST shifts based on the given date.
+   *
+   * @param value - The ISO string or Date object to convert.
+   * @param zone - An IANA timezone name (e.g., 'America/New_York').
+   * @returns A Luxon DateTime instance adjusted to the specified timezone and DST rules.
+   */
+  toZone(value: string | Date, zone: string): DateTime {
+    return DateTime.fromISO(value instanceof Date ? value.toISOString() : value, {
+      zone,
+    });
+  }
+
+  /**
+   * Formats the input date by applying timezone and daylight saving time (DST) adjustments.
+   *
+   * This method:
+   * 1. Converts the input date to the specified timezone.
+   * 2. Formats the result using the given format and locale, reflecting any timezone or DST shifts.
+   *
+   * @param value - The ISO string or Date object to format.
+   * @param format - The format string (default: 'ff').
+   * @param zone - Optional IANA timezone name (e.g., 'America/New_York'); defaults to the system's local timezone.
+   * @returns A formatted date string adjusted for the given timezone and DST rules.
+   */
+  format(value: string | Date, format = 'ff', zone = 'local'): string {
+    return this.toZone(value, zone).setLocale(this.locale).toFormat(format);
+  }
+
+  /**
+   * Formats a date using the standard time offset (ignoring daylight saving time) for the specified timezone.
+   *
+   * This method:
+   * 1. Converts the input date to UTC.
+   * 2. Calculates the standard UTC offset for the given timezone (based on January 1st to avoid DST).
+   * 3. Applies the standard offset manually to the UTC time.
+   * 4. Formats the result using the specified format and locale, without applying additional timezone shifts.
+   *
+   * @param value - The ISO string or Date object to format.
+   * @param format - The Luxon format string (default: 'ff').
+   * @param zone - Optional IANA timezone name (e.g., 'America/New_York'); if omitted, system local timezone is used.
+   * @returns A formatted date string adjusted by standard time (non-DST).
+   */
+  formatDateWithStandardOffset(value: string | Date, format = 'ff', zone?: string): string {
+    const utcDate =
+      typeof value === 'string'
+        ? DateTime.fromISO(value, { zone: 'UTC' })
+        : DateTime.fromJSDate(value, { zone: 'UTC' });
+
+    if (!utcDate.isValid) return '';
+
+    const targetZone = zone ?? DateTime.local().zoneName;
+
+    const januaryDate = DateTime.fromObject(
+      { year: utcDate.year, month: 1, day: 1 },
+      { zone: targetZone },
+    );
+    const standardOffset = januaryDate.offset;
+    const dateWithStandardOffset = utcDate.plus({ minutes: standardOffset });
+
+    return dateWithStandardOffset.setZone('UTC').setLocale(this.locale).toFormat(format);
+  }
+
+  /**
+   * Formats the input date using its original clock time, without converting based on timezone or DST
+   *
+   * This method:
+   * 1. Converts the input date to ISO string.
+   * 2. Calculates the date time in UTC, keeping the local time.
+   * 3. Formats the result using the specified format and locale, without shifting timezones.
+   *
+   * @param value - The ISO string or Date object to format.
+   * @param format - The format string (default: 'ff').
+   * @returns A formatted date string without applying timezone.
+   */
+  formatWithoutTimeZone(value: string | Date, format = 'ff'): string {
+    const isoString = value instanceof Date ? value.toISOString() : value;
+
+    const dateTime = DateTime.fromISO(isoString)
+      .setZone('utc', { keepLocalTime: true })
+      .setLocale(this.locale);
+    return dateTime.toFormat(format);
+  }
+}