added snackbar for status updates

src/app/components/expense/expense.component.ts

@@ -6,6 +6,7 @@ import { MatIcon } from '@angular/material/icon';
 import { ExpenseForm, ExpenseFormComponent } from './expense-form/expense-form.component';
 import { CurrencyPipe, DatePipe } from '@angular/common';
 import { Temporal } from '@js-temporal/polyfill';
+import { SnackBarService } from '../../services/snack-bar';
 
 @Component({
   selector: 'app-expense',
@@ -25,7 +26,8 @@ export class ExpenseComponent {
   public formDirty = model(false);
   public formData = model<ExpenseForm>();
 
-  public constructor(private readonly expenseService: ExpenseService) { }
+  public constructor(private readonly expenseService: ExpenseService,
+                     private readonly snackBar: SnackBarService) { }
 
   public editClick(): void {
     this.editingExpense.set(true);
@@ -42,12 +44,16 @@ export class ExpenseComponent {
       tagIds: form.tags.map(tag => tag.id)
     };
     this.savingExpense.set(true);
+    const snackId = this.snackBar.staticBar('Tracking new expense...');
     try {
       await this.expenseService.postExpense(postExpense);
       this.resetForm();
+      this.snackBar.dismiss(snackId);
+      this.snackBar.autoBar('Expense tracked!');
     }
     catch (error) {
-      console.error(error); // TODO: Add error processing
+      this.snackBar.dismiss(snackId);
+      this.snackBar.dismissableBar('Error: '); // TODO
     }
     finally {
       this.savingExpense.set(false);
@@ -70,14 +76,18 @@ export class ExpenseComponent {
       tagIds: form.tags.map(tag => tag.id)
     };
     this.savingExpense.set(true);
+    const snackId = this.snackBar.staticBar('Updating expense...');
     try {
       const expense = await this.expenseService.updateExpense(putExpense);
       this.expense.set(expense);
       this.form()?.refresh(expense);
       this.editingExpense.set(false);
+      this.snackBar.dismiss(snackId);
+      this.snackBar.autoBar('Expense updated!');
     }
     catch (error) {
-      console.error(error); // TODO: Add error processing
+      this.snackBar.dismiss(snackId);
+      this.snackBar.dismissableBar('Error: '); // TODO
     }
     finally {
       this.savingExpense.set(false);

src/app/services/category.service.ts

@@ -2,7 +2,7 @@ import { Injectable, signal } from '@angular/core';
 import { HttpService } from './http.service';
 
 @Injectable({
-  providedIn: 'root',
+  providedIn: 'root'
 })
 export class CategoryService {
   private internalCategories = signal<Category[]>([]);

src/app/services/http.service.ts

@@ -3,7 +3,7 @@ import { HttpClient } from '@angular/common/http';
 import { firstValueFrom } from 'rxjs';
 
 @Injectable({
-  providedIn: 'root',
+  providedIn: 'root'
 })
 export class HttpService {
   public constructor(private httpClient: HttpClient) { }

src/app/services/merchant.service.ts

@@ -2,7 +2,7 @@ import { Injectable, signal } from '@angular/core';
 import { HttpService } from './http.service';
 
 @Injectable({
-  providedIn: 'root',
+  providedIn: 'root'
 })
 export class MerchantService {
   private internalMerchants = signal<Merchant[]>([]);

src/app/services/snack-bar.ts

@@ -0,0 +1,44 @@
+import { Injectable, signal } from '@angular/core';
+import { MatSnackBar, MatSnackBarRef, TextOnlySnackBar } from '@angular/material/snack-bar';
+
+interface SnackBar {
+  id: string;
+  ref: MatSnackBarRef<TextOnlySnackBar>;
+}
+
+@Injectable({
+  providedIn: 'root'
+})
+export class SnackBarService {
+  protected TIMEOUT = 3000;
+
+  private snackBars = signal<SnackBar[]>([]);
+
+  public constructor(private snackBar: MatSnackBar) { }
+
+  public autoBar(msg: string, milliseconds = this.TIMEOUT): void {
+    const timeout = milliseconds ?? this.TIMEOUT;
+    this.snackBar.open(msg, undefined, { duration: timeout });
+  }
+  public dismissableBar(msg: string, dismissMsg = 'Dismiss'): void {
+    this.snackBar.open(msg, dismissMsg);
+  }
+
+  public staticBar(msg: string): string {
+    const snackBar: SnackBar = {
+      id: crypto.randomUUID().toString(),
+      ref: this.snackBar.open(msg)
+    };
+    this.snackBars.update((bars) => [...bars, snackBar]);
+
+    return snackBar.id;
+  }
+
+  public dismiss(id: string): void {
+    const snackBar = this.snackBars().find((snackBar) => snackBar.id === id);
+    if (snackBar) {
+      snackBar.ref.dismiss();
+      this.snackBars.update((bars) => bars.filter((bar) => bar.id !== snackBar.id));
+    }
+  }
+}

src/app/services/tag.service.ts

@@ -2,7 +2,7 @@ import { Injectable, signal } from '@angular/core';
 import { HttpService } from './http.service';
 
 @Injectable({
-  providedIn: 'root',
+  providedIn: 'root'
 })
 export class TagService {
   private internalTags = signal<Tag[]>([]);