Feature/refresh the numbers periodically and highlight changed values

CHANGELOG.md

@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## Unreleased
 
+### Added
+
+- Added a periodic refresh of the numbers on the home, analysis and accounts pages while the page is visible, highlighting changed values
+
 ### Changed
 
 - Improved the usability of the activities page by eliminating the reload on canceling the import activities dialog

apps/client/src/app/components/home-holdings/home-holdings.component.ts

@@ -1,3 +1,4 @@
+import { AutoRefreshService } from '@ghostfolio/client/services/auto-refresh/auto-refresh.service';
 import { UserService } from '@ghostfolio/client/services/user/user.service';
 import {
   DEFAULT_CURRENCY,
@@ -39,6 +40,7 @@ import { Router, RouterModule } from '@angular/router';
 import { addIcons } from 'ionicons';
 import { gridOutline, reorderFourOutline } from 'ionicons/icons';
 import { DeviceDetectorService } from 'ngx-device-detector';
+import { catchError, EMPTY, exhaustMap, filter } from 'rxjs';
 
 @Component({
   changeDetection: ChangeDetectionStrategy.OnPush,
@@ -106,6 +108,7 @@ export class GfHomeHoldingsComponent implements OnInit {
     internalRoutes.portfolio.subRoutes.activities.routerLink;
   protected readonly user = signal<User | null>(null);
 
+  private readonly autoRefreshService = inject(AutoRefreshService);
   private readonly changeDetectorRef = inject(ChangeDetectorRef);
   private readonly dataService = inject(DataService);
   private readonly destroyRef = inject(DestroyRef);
@@ -138,6 +141,18 @@ export class GfHomeHoldingsComponent implements OnInit {
           this.initialize();
         }
 
+        this.changeDetectorRef.markForCheck();
+      });
+
+    this.autoRefreshService.refresh$
+      .pipe(
+        filter(() => !!this.user() && !!this.holdings),
+        exhaustMap(() => this.fetchHoldings().pipe(catchError(() => EMPTY))),
+        takeUntilDestroyed(this.destroyRef)
+      )
+      .subscribe(({ holdings }) => {
+        this.holdings = holdings;
+
         this.changeDetectorRef.markForCheck();
       });
   }

apps/client/src/app/components/home-overview/home-overview.component.ts

@@ -1,5 +1,6 @@
 import { GfPortfolioPerformanceComponent } from '@ghostfolio/client/components/portfolio-performance/portfolio-performance.component';
 import { LayoutService } from '@ghostfolio/client/core/layout.service';
+import { AutoRefreshService } from '@ghostfolio/client/services/auto-refresh/auto-refresh.service';
 import { ImpersonationStorageService } from '@ghostfolio/client/services/impersonation-storage.service';
 import { UserService } from '@ghostfolio/client/services/user/user.service';
 import {
@@ -37,6 +38,7 @@ import { MatButtonModule } from '@angular/material/button';
 import { MatCardModule } from '@angular/material/card';
 import { Router, RouterModule } from '@angular/router';
 import { DeviceDetectorService } from 'ngx-device-detector';
+import { catchError, EMPTY, exhaustMap, filter } from 'rxjs';
 
 @Component({
   changeDetection: ChangeDetectionStrategy.OnPush,
@@ -115,6 +117,7 @@ export class GfHomeOverviewComponent implements OnInit {
       : (this.user()?.settings?.baseCurrency ?? DEFAULT_CURRENCY);
   });
 
+  private readonly autoRefreshService = inject(AutoRefreshService);
   private readonly dataService = inject(DataService);
   private readonly destroyRef = inject(DestroyRef);
   private readonly deviceDetectorService = inject(DeviceDetectorService);
@@ -149,6 +152,40 @@ export class GfHomeOverviewComponent implements OnInit {
       .subscribe(() => {
         this.update();
       });
+
+    this.autoRefreshService.refresh$
+      .pipe(
+        filter(() => !!this.user() && !this.isLoadingPerformance()),
+        exhaustMap(() => {
+          return this.dataService
+            .fetchPortfolioPerformance({
+              range: this.user()?.settings?.dateRange ?? DEFAULT_DATE_RANGE
+            })
+            .pipe(catchError(() => EMPTY));
+        }),
+        takeUntilDestroyed(this.destroyRef)
+      )
+      .subscribe(({ errors, performance }) => {
+        this.errors.set(errors ?? []);
+        this.performance.set(performance);
+      });
+
+    this.autoRefreshService.refresh$
+      .pipe(
+        filter(() => this.showExperimentalHoldings() && !!this.holdings()),
+        exhaustMap(() => {
+          return this.dataService
+            .fetchPortfolioHoldings({
+              filters: [{ id: 'ACTIVE', type: 'HOLDING_TYPE' }],
+              range: this.user()?.settings?.dateRange
+            })
+            .pipe(catchError(() => EMPTY));
+        }),
+        takeUntilDestroyed(this.destroyRef)
+      )
+      .subscribe(({ holdings }) => {
+        this.holdings.set(this.filterCashPositions(holdings));
+      });
   }
 
   protected onHoldingClicked({ dataSource, symbol }: AssetProfileIdentifier) {
@@ -159,6 +196,19 @@ export class GfHomeOverviewComponent implements OnInit {
     }
   }
 
+  private filterCashPositions(holdings: PortfolioPosition[]) {
+    const baseCurrency =
+      this.user()?.settings?.baseCurrency ?? DEFAULT_CURRENCY;
+
+    return holdings.filter(({ assetProfile }) => {
+      return !(
+        isCashPosition(assetProfile) &&
+        assetProfile.currency === baseCurrency &&
+        assetProfile.symbol === baseCurrency
+      );
+    });
+  }
+
   private update() {
     const userSettings = this.user()?.settings;
 
@@ -175,17 +225,7 @@ export class GfHomeOverviewComponent implements OnInit {
         })
         .pipe(takeUntilDestroyed(this.destroyRef))
         .subscribe(({ holdings }) => {
-          const baseCurrency = userSettings?.baseCurrency ?? DEFAULT_CURRENCY;
-
-          this.holdings.set(
-            holdings.filter(({ assetProfile }) => {
-              return !(
-                isCashPosition(assetProfile) &&
-                assetProfile.currency === baseCurrency &&
-                assetProfile.symbol === baseCurrency
-              );
-            })
-          );
+          this.holdings.set(this.filterCashPositions(holdings));
         });
     }
 

apps/client/src/app/pages/accounts/accounts-page.component.ts

@@ -1,3 +1,4 @@
+import { AutoRefreshService } from '@ghostfolio/client/services/auto-refresh/auto-refresh.service';
 import { ImpersonationStorageService } from '@ghostfolio/client/services/impersonation-storage.service';
 import { UserService } from '@ghostfolio/client/services/user/user.service';
 import { DEFAULT_LOCALE } from '@ghostfolio/common/config';
@@ -20,7 +21,7 @@ import {
 } from '@angular/core';
 import { takeUntilDestroyed } from '@angular/core/rxjs-interop';
 import { Router, RouterModule } from '@angular/router';
-import { filter, switchMap, tap } from 'rxjs';
+import { catchError, EMPTY, exhaustMap, filter, switchMap, tap } from 'rxjs';
 
 @Component({
   changeDetection: ChangeDetectionStrategy.OnPush,
@@ -45,6 +46,7 @@ export class GfAccountsPageComponent implements OnInit {
 
   private hasImpersonationId: boolean;
 
+  private readonly autoRefreshService = inject(AutoRefreshService);
   private readonly changeDetectorRef = inject(ChangeDetectorRef);
   private readonly dataService = inject(DataService);
   private readonly destroyRef = inject(DestroyRef);
@@ -92,6 +94,16 @@ export class GfAccountsPageComponent implements OnInit {
       .subscribe((response) => {
         this.updateAccounts(response);
       });
+
+    this.autoRefreshService.refresh$
+      .pipe(
+        filter(() => !!this.accounts),
+        exhaustMap(() => this.fetchAccounts().pipe(catchError(() => EMPTY))),
+        takeUntilDestroyed(this.destroyRef)
+      )
+      .subscribe((response) => {
+        this.updateAccounts(response);
+      });
   }
 
   protected onDeleteAccount(aId: string) {

apps/client/src/app/pages/portfolio/analysis/analysis-page.component.ts

@@ -1,4 +1,5 @@
 import { GfBenchmarkComparatorComponent } from '@ghostfolio/client/components/benchmark-comparator/benchmark-comparator.component';
+import { AutoRefreshService } from '@ghostfolio/client/services/auto-refresh/auto-refresh.service';
 import { UserService } from '@ghostfolio/client/services/user/user.service';
 import {
   DEFAULT_DATE_RANGE,
@@ -56,7 +57,7 @@ import { isNumber, keyBy, sortBy, union } from 'lodash-es';
 import ms from 'ms';
 import { DeviceDetectorService } from 'ngx-device-detector';
 import { NgxSkeletonLoaderModule } from 'ngx-skeleton-loader';
-import { forkJoin } from 'rxjs';
+import { catchError, EMPTY, exhaustMap, filter, forkJoin } from 'rxjs';
 
 @Component({
   changeDetection: ChangeDetectionStrategy.OnPush,
@@ -122,6 +123,7 @@ export class GfAnalysisPageComponent implements OnInit {
   );
   private dateOfFirstActivity: Date;
 
+  private readonly autoRefreshService = inject(AutoRefreshService);
   private readonly changeDetectorRef = inject(ChangeDetectorRef);
   private readonly clipboard = inject(Clipboard);
   private readonly dataService = inject(DataService);
@@ -166,6 +168,34 @@ export class GfAnalysisPageComponent implements OnInit {
           this.update();
         }
 
+        this.changeDetectorRef.markForCheck();
+      });
+
+    this.autoRefreshService.refresh$
+      .pipe(
+        filter(() => !!this.user && !this.isLoadingInvestmentChart),
+        exhaustMap(() => {
+          return forkJoin({
+            holdings: this.dataService.fetchPortfolioHoldings({
+              filters: [
+                ...this.userService.getFilters(),
+                { id: 'ACTIVE', type: 'HOLDING_TYPE' }
+              ],
+              range: this.user?.settings?.dateRange
+            }),
+            performance: this.dataService.fetchPortfolioPerformance({
+              filters: this.userService.getFilters(),
+              range: this.user?.settings?.dateRange ?? DEFAULT_DATE_RANGE
+            })
+          }).pipe(catchError(() => EMPTY));
+        }),
+        takeUntilDestroyed(this.destroyRef)
+      )
+      .subscribe(({ holdings: { holdings }, performance }) => {
+        this.performance = performance.performance;
+
+        this.updateTopAndBottomHoldings(holdings);
+
         this.changeDetectorRef.markForCheck();
       });
   }
@@ -347,6 +377,35 @@ export class GfAnalysisPageComponent implements OnInit {
       });
   }
 
+  private updateTopAndBottomHoldings(holdings: PortfolioPosition[]) {
+    const holdingsSorted = sortBy(
+      holdings.filter((holding) => {
+        return (
+          canOpenHoldingDetail(holding) &&
+          isNumber(holding.netPerformancePercentWithCurrencyEffect)
+        );
+      }),
+      'netPerformancePercentWithCurrencyEffect'
+    ).reverse();
+
+    this.top3 = holdingsSorted
+      .filter(
+        ({ netPerformancePercentWithCurrencyEffect }) =>
+          netPerformancePercentWithCurrencyEffect > 0
+      )
+      .slice(0, 3);
+
+    this.bottom3 = holdingsSorted
+      .filter(
+        ({ netPerformancePercentWithCurrencyEffect }) =>
+          netPerformancePercentWithCurrencyEffect < 0
+      )
+      .slice(-3)
+      .reverse();
+
+    this.changeDetectorRef.markForCheck();
+  }
+
   private update() {
     this.isLoadingInvestmentChart = true;
 
@@ -425,30 +484,7 @@ export class GfAnalysisPageComponent implements OnInit {
       })
       .pipe(takeUntilDestroyed(this.destroyRef))
       .subscribe(({ holdings }) => {
-        const holdingsSorted = sortBy(
-          holdings.filter((holding) => {
-            return (
-              canOpenHoldingDetail(holding) &&
-              isNumber(holding.netPerformancePercentWithCurrencyEffect)
-            );
-          }),
-          'netPerformancePercentWithCurrencyEffect'
-        ).reverse();
-
-        this.top3 = holdingsSorted
-          .filter(
-            ({ netPerformancePercentWithCurrencyEffect }) =>
-              netPerformancePercentWithCurrencyEffect > 0
-          )
-          .slice(0, 3);
-
-        this.bottom3 = holdingsSorted
-          .filter(
-            ({ netPerformancePercentWithCurrencyEffect }) =>
-              netPerformancePercentWithCurrencyEffect < 0
-          )
-          .slice(-3)
-          .reverse();
+        this.updateTopAndBottomHoldings(holdings);
 
         this.changeDetectorRef.markForCheck();
       });

apps/client/src/app/services/auto-refresh/auto-refresh.service.spec.ts

@@ -0,0 +1,56 @@
+import {
+  AUTO_REFRESH_INTERVAL_MS,
+  AutoRefreshService
+} from './auto-refresh.service';
+
+describe('AutoRefreshService', () => {
+  const setVisibility = (state: 'hidden' | 'visible') => {
+    Object.defineProperty(document, 'visibilityState', {
+      configurable: true,
+      get: () => state
+    });
+    document.dispatchEvent(new Event('visibilitychange'));
+  };
+
+  beforeEach(() => {
+    jest.useFakeTimers();
+    setVisibility('visible');
+  });
+
+  afterEach(() => {
+    jest.useRealTimers();
+  });
+
+  it('emits at the interval while the page is visible', () => {
+    const service = new AutoRefreshService();
+    const next = jest.fn();
+    const subscription = service.refresh$.subscribe(next);
+
+    jest.advanceTimersByTime(AUTO_REFRESH_INTERVAL_MS - 1);
+    expect(next).not.toHaveBeenCalled();
+
+    jest.advanceTimersByTime(1);
+    expect(next).toHaveBeenCalledTimes(1);
+
+    jest.advanceTimersByTime(AUTO_REFRESH_INTERVAL_MS * 2);
+    expect(next).toHaveBeenCalledTimes(3);
+
+    subscription.unsubscribe();
+  });
+
+  it('pauses while hidden and refreshes immediately when visible again', () => {
+    const service = new AutoRefreshService();
+    const next = jest.fn();
+    const subscription = service.refresh$.subscribe(next);
+
+    setVisibility('hidden');
+    jest.advanceTimersByTime(AUTO_REFRESH_INTERVAL_MS * 3);
+    expect(next).not.toHaveBeenCalled();
+
+    setVisibility('visible');
+    jest.advanceTimersByTime(0);
+    expect(next).toHaveBeenCalledTimes(1);
+
+    subscription.unsubscribe();
+  });
+});

apps/client/src/app/services/auto-refresh/auto-refresh.service.ts

@@ -0,0 +1,45 @@
+import { Service } from '@angular/core';
+import { EMPTY, fromEvent, Observable, timer } from 'rxjs';
+import {
+  distinctUntilChanged,
+  map,
+  share,
+  startWith,
+  switchMap
+} from 'rxjs/operators';
+
+export const AUTO_REFRESH_INTERVAL_MS = 15_000;
+
+/**
+ * Emits at a fixed interval while the page is visible so that pages can
+ * refresh their numbers silently. The timer stops while the tab is hidden
+ * and fires once immediately when the tab becomes visible again.
+ */
+@Service()
+export class AutoRefreshService {
+  public readonly refresh$: Observable<void>;
+
+  public constructor() {
+    let isFirstActivation = true;
+
+    this.refresh$ = fromEvent(document, 'visibilitychange').pipe(
+      startWith(undefined),
+      map(() => document.visibilityState === 'visible'),
+      distinctUntilChanged(),
+      switchMap((isVisible) => {
+        if (!isVisible) {
+          return EMPTY;
+        }
+
+        const dueTime = isFirstActivation ? AUTO_REFRESH_INTERVAL_MS : 0;
+
+        isFirstActivation = false;
+
+        return timer(dueTime, AUTO_REFRESH_INTERVAL_MS).pipe(
+          map(() => undefined)
+        );
+      }),
+      share()
+    );
+  }
+}

libs/ui/src/lib/value/value-change.helper.spec.ts

@@ -0,0 +1,51 @@
+import { getValueChangeDirection } from './value-change.helper';
+
+describe('getValueChangeDirection', () => {
+  it('detects an increase', () => {
+    expect(
+      getValueChangeDirection({
+        currentValue: 101,
+        digits: 2,
+        previousValue: 100
+      })
+    ).toBe('up');
+  });
+
+  it('detects a decrease', () => {
+    expect(
+      getValueChangeDirection({
+        currentValue: 99.5,
+        digits: 2,
+        previousValue: 100
+      })
+    ).toBe('down');
+  });
+
+  it('ignores changes below the displayed precision', () => {
+    expect(
+      getValueChangeDirection({
+        currentValue: 100.001,
+        digits: 2,
+        previousValue: 100
+      })
+    ).toBeUndefined();
+  });
+
+  it('ignores values which are not finite numbers', () => {
+    expect(
+      getValueChangeDirection({
+        currentValue: NaN,
+        digits: 2,
+        previousValue: 100
+      })
+    ).toBeUndefined();
+
+    expect(
+      getValueChangeDirection({
+        currentValue: '101',
+        digits: 2,
+        previousValue: 100
+      })
+    ).toBeUndefined();
+  });
+});

libs/ui/src/lib/value/value-change.helper.ts

@@ -0,0 +1,32 @@
+/**
+ * Returns the direction in which a displayed number has changed, or
+ * `undefined` if it is unchanged at the displayed precision.
+ */
+export function getValueChangeDirection({
+  currentValue,
+  digits,
+  previousValue
+}: {
+  currentValue: unknown;
+  digits: number;
+  previousValue: unknown;
+}): 'down' | 'up' | undefined {
+  if (
+    typeof currentValue !== 'number' ||
+    typeof previousValue !== 'number' ||
+    !Number.isFinite(currentValue) ||
+    !Number.isFinite(previousValue)
+  ) {
+    return undefined;
+  }
+
+  const factor = 10 ** digits;
+  const difference =
+    Math.round(currentValue * factor) - Math.round(previousValue * factor);
+
+  if (difference === 0) {
+    return undefined;
+  }
+
+  return difference > 0 ? 'up' : 'down';
+}

libs/ui/src/lib/value/value.component.scss

@@ -8,3 +8,38 @@
     line-height: 1;
   }
 }
+
+@keyframes gf-flash-up {
+  from {
+    background-color: rgba(var(--bs-success-rgb, 40, 167, 69), 0.35);
+  }
+
+  to {
+    background-color: transparent;
+  }
+}
+
+@keyframes gf-flash-down {
+  from {
+    background-color: rgba(var(--bs-danger-rgb, 220, 53, 69), 0.35);
+  }
+
+  to {
+    background-color: transparent;
+  }
+}
+
+:host(.gf-flash-up) {
+  animation: gf-flash-up 1.2s ease-out;
+}
+
+:host(.gf-flash-down) {
+  animation: gf-flash-down 1.2s ease-out;
+}
+
+@media (prefers-reduced-motion: reduce) {
+  :host(.gf-flash-down),
+  :host(.gf-flash-up) {
+    animation: none;
+  }
+}

libs/ui/src/lib/value/value.component.ts

@@ -14,6 +14,7 @@ import {
   Input,
   OnChanges,
   OnDestroy,
+  SimpleChanges,
   ViewChild
 } from '@angular/core';
 import { MatButtonModule } from '@angular/material/button';
@@ -25,6 +26,8 @@ import { isNumber } from 'lodash-es';
 import ms from 'ms';
 import { NgxSkeletonLoaderModule } from 'ngx-skeleton-loader';
 
+import { getValueChangeDirection } from './value-change.helper';
+
 @Component({
   changeDetection: ChangeDetectionStrategy.OnPush,
   imports: [CommonModule, IonIcon, MatButtonModule, NgxSkeletonLoaderModule],
@@ -68,6 +71,7 @@ export class GfValueComponent implements AfterViewInit, OnChanges, OnDestroy {
   public constructor(
     private changeDetectorRef: ChangeDetectorRef,
     private clipboard: Clipboard,
+    private elementRef: ElementRef<HTMLElement>,
     private snackBar: MatSnackBar
   ) {
     addIcons({
@@ -93,6 +97,39 @@ export class GfValueComponent implements AfterViewInit, OnChanges, OnDestroy {
     return precision !== undefined && precision >= 0;
   }
 
+  /**
+   * Briefly highlights the value in green or red if the displayed number
+   * has changed, e.g. after a background refresh.
+   */
+  private flashOnChange(changes?: SimpleChanges) {
+    const change = changes?.['value'];
+
+    if (!change || change.firstChange || this.isLoading()) {
+      return;
+    }
+
+    const direction = getValueChangeDirection({
+      currentValue: change.currentValue,
+      digits:
+        ((this.hasPrecision ? this.precision() : 2) ?? 2) +
+        (this.isPercent ? 2 : 0),
+      previousValue: change.previousValue
+    });
+
+    if (!direction) {
+      return;
+    }
+
+    const element = this.elementRef.nativeElement;
+
+    element.classList.remove('gf-flash-down', 'gf-flash-up');
+
+    // Force a reflow to restart the animation
+    void element.offsetWidth;
+
+    element.classList.add(`gf-flash-${direction}`);
+  }
+
   public ngAfterViewInit() {
     if (this.labelContent) {
       const element = this.labelContent.nativeElement;
@@ -104,8 +141,9 @@ export class GfValueComponent implements AfterViewInit, OnChanges, OnDestroy {
     }
   }
 
-  public ngOnChanges() {
+  public ngOnChanges(changes?: SimpleChanges) {
     this.initializeVariables();
+    this.flashOnChange(changes);
 
     if (this.value || this.value === 0) {
       if (isNumber(this.value)) {