Crypto currency isn't static anymore

- Notification when transaction got confirmed

package-lock.json

@@ -7527,6 +7527,14 @@
       "integrity": "sha1-yobR/ogoFpsBICCOPchCS524NCw=",
       "dev": true
     },
+    "ng-push-ivy": {
+      "version": "1.0.7",
+      "resolved": "https://registry.npmjs.org/ng-push-ivy/-/ng-push-ivy-1.0.7.tgz",
+      "integrity": "sha512-uUzIKBc6LA9Bw0sl7aj6x3eUr2UcCbXEw1PKpLFZ2OxzbnAhqh3IVX4ah0PRiDpfscFhmGUR2amLo19njAbMVg==",
+      "requires": {
+        "tslib": "^2.0.0"
+      }
+    },
     "ngx-socket-io": {
       "version": "3.2.0",
       "resolved": "https://registry.npmjs.org/ngx-socket-io/-/ngx-socket-io-3.2.0.tgz",

package.json

@@ -20,6 +20,7 @@
     "@angular/platform-browser-dynamic": "~11.0.5",
     "@angular/router": "~11.0.5",
     "angularx-qrcode": "^10.0.11",
+    "ng-push-ivy": "^1.0.7",
     "ngx-socket-io": "^3.2.0",
     "rxjs": "~6.6.0",
     "tslib": "^2.0.0",

src/app/app.module.ts

@@ -13,6 +13,7 @@ import { HttpClientModule } from '@angular/common/http';
 import { AppRoutingModule } from 'src/routes';
 import { NotFoundComponent } from './not-found/not-found.component';
 import { CartComponent } from './cart/cart.component';
+import { PushNotificationsModule } from 'ng-push-ivy';
 
 const config: SocketIoConfig = { url: 'http://localhost:2009', options: {} };
 
@@ -31,7 +32,8 @@ const config: SocketIoConfig = { url: 'http://localhost:2009', options: {} };
     QRCodeModule,
     HttpClientModule,
     AppRoutingModule,
-    SocketIoModule.forRoot(config)
+    SocketIoModule.forRoot(config),
+    PushNotificationsModule
   ],
   providers: [],
   bootstrap: [AppComponent]

src/app/backend.service.ts

@@ -66,7 +66,7 @@ export interface IInvoice {
 })
 export class BackendService {
 
-  SERVER_URL = 'http://localhost:2009';
+  SERVER_URL = 'http://192.168.178.26:2009';
 
   // Fill with empty data
   invoice: IInvoice = {
@@ -138,7 +138,7 @@ export class BackendService {
   setInvoice(selector: string): Promise<IInvoice> {
     return new Promise(async (resolve, reject) => {
       if (selector === undefined || selector === 'undefined' || selector === '') {
-        reject();
+        reject('There is no selector. Please set one before calling setInvoice(...)');
         return;
       }
 
@@ -147,7 +147,6 @@ export class BackendService {
         responseType: 'json'
       }).toPromise().then((invoice) => {
         this.invoice = invoice as IInvoice;
-        this.invoiceUpdate.next(this.invoice);
         resolve(this.invoice);
       }).catch(err => {
         reject(err);
@@ -224,7 +223,14 @@ export class BackendService {
   /**
    * @returns Path to icon in assets folder
    */
-  getIcon(unit: CryptoUnits): string {
+  getIcon(unit?: CryptoUnits): string {
+    if (unit === undefined) {
+      if (this.invoice.paymentMethod === undefined) {
+        return 'assets/Bitcoin.svg';
+      }
+
+      unit = this.invoice.paymentMethod;
+    }
     switch (unit) {
       case CryptoUnits.BITCOIN:
         return 'assets/Bitcoin.svg';
@@ -241,7 +247,15 @@ export class BackendService {
     }
   }
 
-  findCryptoBySymbol(symbol: string): string | null {
+  findCryptoBySymbol(symbol?: string): string | null {
+    if (symbol === undefined) {
+      if (this.invoice.paymentMethod === undefined) {
+        return null;
+      }
+
+      symbol = this.invoice.paymentMethod;
+    }
+
     for (const coin in CryptoUnits) {
       // @ts-ignore: This actually works but I think it's too hacky for TS. Allow me this one, please.
       if (CryptoUnits[coin] === symbol.toUpperCase()) {

src/app/cart/cart.component.css

@@ -48,3 +48,8 @@
     text-align: right;
     margin: auto;
 }
+
+.quantity {
+    font-weight: lighter;
+    font-size: 10pt;
+}

src/app/cart/cart.component.html

@@ -2,8 +2,8 @@
     <ul>
         <li *ngFor="let item of this.backend.invoice.cart;let indexOfelement=index;" [ngClass]="{'xyz-in': this.state.showCart.value, 'xyz-out': !this.state.showCart.value}">
             <img [src]="item.image" class="image">
-            <h5 class="name">{{ item.name }}</h5>
-            <span class="price"><b>{{ item.price.toFixed(2) }} {{ this.backend.currencyPrefix() }}</b><br>
+            <h5 class="name">{{ item.name }}<span class="quantity" *ngIf="item.quantity !== 1"> x{{ item.quantity }}</span></h5>
+            <span class="price"><b>{{ (item.price * item.quantity).toFixed(2) }} {{ this.backend.currencyPrefix() }}</b><br>
             {{ this.backend.calculateCryptoPrice(indexOfelement).toFixed(8) }} {{ this.backend.invoice.paymentMethod }}</span>
         </li>
     </ul>

src/app/payment/payment.component.html

@@ -25,9 +25,9 @@
 
     <div class="qrWrapper" [ngClass]="{'xyz-in': !this.state.showCart.value, 'xyz-out': this.state.showCart.value}">
         <div class="qr">
-            <img src="assets/Bitcoin.svg">
+            <img [src]="this.backend.getIcon()">
             <qrcode
-                [qrdata]="'bitcoin:' + this.backend.invoice!!.receiveAddress + '?amount=' + this.backend.getAmount()"
+                [qrdata]="this.backend.findCryptoBySymbol()!.toLowerCase() + ':' + this.backend.invoice.receiveAddress + '?amount=' + this.backend.getAmount()"
                 [width]="256"
                 [errorCorrectionLevel]="'M'"
                 [elementType]="'svg'"
@@ -42,7 +42,7 @@
             <h3>{{ this.backend.invoice?.receiveAddress }}</h3>
         </span>
         <span id="amount" [ngClass]="{'xyz-in': !this.state.showCart.value, 'xyz-out': this.state.showCart.value}">Amount
-            <h3>{{ this.backend.getAmount() }} BTC <span class="price"> | {{ this.backend.invoice.totalPrice!.toFixed(2) }} {{ this.backend.currencyPrefix() }}</span></h3>
+            <h3>{{ this.backend.getAmount() }} {{ this.backend.invoice.paymentMethod }} <span class="price"> | {{ this.backend.invoice.totalPrice!.toFixed(2) }} {{ this.backend.currencyPrefix() }}</span></h3>
         </span>
         <span id="status" [ngClass]="{'xyz-in': !this.state.showCart.value, 'xyz-out': this.state.showCart.value}">Status
             <h3>

src/app/payment/payment.component.ts

@@ -1,7 +1,8 @@
 import { Component, OnInit } from '@angular/core';
 import { ActivatedRoute } from '@angular/router';
+import { PushNotificationsService } from 'ng-push-ivy';
 
-import { BackendService, CryptoUnits } from '../backend.service';
+import { BackendService, CryptoUnits, PaymentStatus } from '../backend.service';
 import { StateService } from '../state.service';
 
 @Component({
@@ -15,6 +16,7 @@ export class PaymentComponent implements OnInit {
   confirmations = 0;
   status: string;
   ready = false;
+  emittedNotification = false;
 
   // XYZ class (will be xyz-out if cart is shown for example)
   xyzClass: string;
@@ -23,7 +25,8 @@ export class PaymentComponent implements OnInit {
   constructor(
     public backend: BackendService,
     public state: StateService,
-    private route: ActivatedRoute
+    private route: ActivatedRoute,
+    private push: PushNotificationsService
   ) {
     this.status = this.backend.getStatus();
     this.hideMain = false;
@@ -49,9 +52,31 @@ export class PaymentComponent implements OnInit {
           this.xyzClass = 'xyz-in';
         }, 600);
       }
-    })
+    });
 
     this.backend.invoiceUpdate.subscribe(newInvoice => {
+      if (newInvoice?.status === PaymentStatus.UNCONFIRMED) {
+        this.push.requestPermission();
+      }
+      if (newInvoice?.status === PaymentStatus.DONE) {
+        if (this.emittedNotification) { return; }
+        this.push.create('Transaction confirmed!', {
+          body: 'Your transaction just got confirmed.',
+          lang: 'en',
+          icon: this.backend.getIcon(),
+          sticky: true,
+          vibrate: [250, 400, 250],
+          sound: 'assets/pay_success.mp3'
+        }).subscribe(
+          (res: any) => {
+            console.log('Success');
+          },
+          (err: any) => {
+            console.error('Error:', err);
+          }
+        );
+        this.emittedNotification = true;
+      }
       this.status = this.backend.getStatus();
     });
   }
@@ -61,7 +86,8 @@ export class PaymentComponent implements OnInit {
   }
 
   async get(): Promise<void> {
-    await this.backend.setInvoice(this.paymentSelector);
+    const res = await this.backend.setInvoice(this.paymentSelector);
+    this.status = this.backend.getStatus();
     this.backend.getConfirmation().catch();
     this.ready = true;
   }

src/app/state.service.ts

@@ -20,7 +20,7 @@ export class StateService {
     });
   }
 
-  toggleCart() {
+  toggleCart(): void {
     this.showCart.next(!this.showCart.value);
   }
 }