stub out premium payment with payment form

src/app/settings/premium.component.ts

@@ -0,0 +1,150 @@
+import {
+    Component,
+    OnInit,
+} from '@angular/core';
+
+import { I18nService } from 'jslib/abstractions/i18n.service';
+
+@Component({
+    selector: 'app-premium',
+    templateUrl: 'premium.component.html',
+})
+export class PremiumComponent implements OnInit {
+    premiumPrice = 10;
+    storageGbPrice = 4;
+    additionalStorage = 0;
+    method = 'card';
+    card: any = {
+        number: null,
+        exp_month: null,
+        exp_year: null,
+        address_country: '',
+        address_zip: null,
+    };
+    formPromise: Promise<any>;
+    cardExpMonthOptions: any[];
+    cardExpYearOptions: any[];
+
+    private stripeScript: HTMLScriptElement;
+    private btScript: HTMLScriptElement;
+    private btInstance: any = null;
+
+    constructor(private i18nService: I18nService) {
+        this.stripeScript = window.document.createElement('script');
+        this.stripeScript.src = 'https://js.stripe.com/v2/';
+        this.stripeScript.async = true;
+        this.stripeScript.onload = () => {
+            (window as any).Stripe.setPublishableKey('pk_test_KPoCfZXu7mznb9uSCPZ2JpTD');
+        };
+        this.btScript = window.document.createElement('script');
+        this.btScript.src = 'https://js.braintreegateway.com/web/dropin/1.4.0/js/dropin.min.js';
+        this.btScript.async = true;
+
+        this.cardExpMonthOptions = [
+            { name: '-- ' + i18nService.t('select') + ' --', value: null },
+            { name: '01 - ' + i18nService.t('january'), value: '01' },
+            { name: '02 - ' + i18nService.t('february'), value: '02' },
+            { name: '03 - ' + i18nService.t('march'), value: '03' },
+            { name: '04 - ' + i18nService.t('april'), value: '04' },
+            { name: '05 - ' + i18nService.t('may'), value: '05' },
+            { name: '06 - ' + i18nService.t('june'), value: '06' },
+            { name: '07 - ' + i18nService.t('july'), value: '07' },
+            { name: '08 - ' + i18nService.t('august'), value: '08' },
+            { name: '09 - ' + i18nService.t('september'), value: '09' },
+            { name: '10 - ' + i18nService.t('october'), value: '10' },
+            { name: '11 - ' + i18nService.t('november'), value: '11' },
+            { name: '12 - ' + i18nService.t('december'), value: '12' },
+        ];
+
+        this.cardExpYearOptions = [
+            { name: '-- ' + i18nService.t('select') + ' --', value: null },
+        ];
+        const year = (new Date()).getFullYear();
+        for (let i = year; i < (year + 10); i++) {
+            this.cardExpYearOptions.push({ name: i.toString(), value: i.toString().slice(-2) });
+        }
+    }
+
+    ngOnInit() {
+        window.document.body.appendChild(this.stripeScript);
+        window.document.body.appendChild(this.btScript);
+    }
+
+    ngOnDestroy() {
+        window.document.body.removeChild(this.stripeScript);
+        window.document.body.removeChild(this.btScript);
+        Array.from(window.document.querySelectorAll('iframe')).forEach((el) => {
+            if (el.src != null && el.src.indexOf('stripe') > -1) {
+                window.document.body.removeChild(el);
+            }
+        });
+    }
+
+    async submit() {
+        try {
+            const token = await this.createPaymentToken();
+        } catch (e) {
+
+        }
+    }
+
+    changeMethod() {
+        if (this.method !== 'paypal') {
+            this.btInstance = null;
+            return;
+        }
+
+        window.setTimeout(() => {
+            (window as any).braintree.dropin.create({
+                authorization: 'sandbox_r72q8jq6_9pnxkwm75f87sdc2',
+                container: '#bt-dropin-container',
+                paymentOptionPriority: ['paypal'],
+                paypal: {
+                    flow: 'vault',
+                    buttonStyle: {
+                        label: 'pay',
+                        size: 'medium',
+                        shape: 'pill',
+                        color: 'blue',
+                    },
+                },
+            }, (createErr: any, instance: any) => {
+                if (createErr != null) {
+                    console.error(createErr);
+                    return;
+                }
+                this.btInstance = instance;
+            });
+        }, 250);
+    }
+
+    get additionalStorageTotal(): number {
+        return this.storageGbPrice * this.additionalStorage;
+    }
+
+    get total(): number {
+        return this.additionalStorageTotal + this.premiumPrice;
+    }
+
+    private createPaymentToken() {
+        return new Promise((resolve, reject) => {
+            if (this.method === 'paypal') {
+                this.btInstance.requestPaymentMethod().then((payload: any) => {
+                    resolve(payload.nonce);
+                }).catch((err: any) => {
+                    reject(err.message);
+                });
+            } else {
+                (window as any).Stripe.card.createToken(this.card, (status: number, response: any) => {
+                    if (status === 200 && response.id != null) {
+                        resolve(response.id);
+                    } else if (response.error != null) {
+                        reject(response.error.message);
+                    } else {
+                        reject();
+                    }
+                });
+            }
+        });
+    }
+}