prettier

frontend/src/app/app.routes.ts

@@ -18,5 +18,5 @@ export const routes: Routes = [
     path: 'deposit',
     component: DepositComponent,
     canActivate: [authGuard],
-  }
+  },
 ];

frontend/src/app/deposit/deposit.component.html

@@ -1,5 +1,8 @@
 <form [formGroup]="form">
-  <input type="number" formControlName="amount">€
+  @if (errorMsg) {
-  <br>
+    <div>{{ errorMsg }}</div>
+  }
+  <input type="number" formControlName="amount" />€
+  <br />
   <button type="button" (click)="submit()">Einzahlen</button>
 </form>

frontend/src/app/deposit/deposit.component.ts

@@ -1,32 +1,51 @@
-import { Component, inject, OnInit } from '@angular/core';
+import { ChangeDetectionStrategy, Component, inject, OnInit } from '@angular/core';
 import { FormControl, FormGroup, ReactiveFormsModule, Validators } from '@angular/forms';
 import { loadStripe, Stripe } from '@stripe/stripe-js';
 import { DepositService } from '../service/deposit.service';
+import { debounceTime } from 'rxjs';
 
 @Component({
   selector: 'app-deposit',
   standalone: true,
-  imports: [
+  imports: [ReactiveFormsModule],
-    ReactiveFormsModule,
-  ],
   templateUrl: './deposit.component.html',
-  styleUrl: './deposit.component.css'
+  styleUrl: './deposit.component.css',
+  changeDetection: ChangeDetectionStrategy.OnPush,
 })
-export class DepositComponent implements OnInit{
+export class DepositComponent implements OnInit {
-  protected form = new FormGroup({amount: new FormControl(50, [Validators.min(50)])});
+  protected form!: FormGroup;
+  protected errorMsg: string = '';
   private stripe: Stripe | null = null;
   private service: DepositService = inject(DepositService);
 
   async ngOnInit() {
-    this.stripe = await loadStripe('pk_test_51QrePYIvCfqz7ANgMizBorPpVjJ8S6gcaL4yvcMQnVaKyReqcQ6jqaQEF7aDZbDu8rNVsTZrw8ABek4ToxQX7KZe00jpGh8naG');
+    this.form = new FormGroup({
+      amount: new FormControl(50, [Validators.min(50)]),
+    });
+
+    this.form.controls['amount'].valueChanges.pipe(debounceTime(1000)).subscribe((value) => {
+      if (value < 50) {
+        this.errorMsg = 'Minimum Einzahlungsbetrag ist 50€';
+      }
+    });
+
+    this.stripe = await loadStripe(
+      'pk_test_51QrePYIvCfqz7ANgMizBorPpVjJ8S6gcaL4yvcMQnVaKyReqcQ6jqaQEF7aDZbDu8rNVsTZrw8ABek4ToxQX7KZe00jpGh8naG'
+    );
   }
 
   submit() {
-    if (this.stripe) {
+    if (!this.stripe) {
-      console.log(JSON.stringify(this.form.value.amount as number));
+      this.errorMsg = 'Ein Fehler ist aufgetreten. Bitte versuchen Sie es später erneut.';
-      this.service.handleDeposit(this.form.value.amount as number).subscribe(({sessionId}) => {
+      return;
-        this.stripe?.redirectToCheckout({sessionId});
+    }
+    if (!this.form.valid) {
+      this.errorMsg = 'Bitte geben Sie einen gültigen Betrag ein.';
+      return;
+    }
+
+    this.service.handleDeposit(this.form.value.amount as number).subscribe(({ sessionId }) => {
+      this.stripe?.redirectToCheckout({ sessionId });
     });
   }
-  }
 }

frontend/src/app/service/deposit.service.ts

@@ -2,14 +2,13 @@ import { inject, Injectable } from '@angular/core';
 import { HttpClient } from '@angular/common/http';
 import { Observable } from 'rxjs';
 
-
 @Injectable({
-  providedIn: 'root'
+  providedIn: 'root',
 })
 export class DepositService {
   private http: HttpClient = inject(HttpClient);
 
   handleDeposit(amount: number): Observable<{ sessionId: string }> {
-    return this.http.post<{sessionId: string}>('/backend/deposit/checkout', {amount});
+    return this.http.post<{ sessionId: string }>('/backend/deposit/checkout', { amount });
   }
 }