backend/src/modules/storefrontCheckout/controllers/StorefrontCheckoutController.ts

@@ -41,7 +41,7 @@ export class StorefrontCheckoutController {
 
     @Post('shop/checkout/pay')
     @Throttle(throttleProfiles.checkoutPay)
-    async pay(@Req() req: Request, @Res() res: Response, @Body() { captcha }: PayCheckoutDto): Promise<void> {
+    async pay(@Req() req: Request, @Res() res: Response, @Body() { captcha, paymentMethod }: PayCheckoutDto): Promise<void> {
         const sessionId = this.checkoutSessionCookieService.getSessionId(req, res);
 
         if (sessionId) {
@@ -64,7 +64,7 @@ export class StorefrontCheckoutController {
 
         const summary = await this.cartService.getCartSummary(cart, discountCodes);
 
-        const session = await this.checkoutSessionService.createFromCartSummary(summary);
+        const session = await this.checkoutSessionService.createFromCartSummary(summary, paymentMethod);
 
         this.checkoutSessionCookieService.setSessionId(req, res, session.id);
 

backend/src/modules/storefrontCheckout/dto/PayCheckoutDto.ts

@@ -1,10 +1,13 @@
-import { IsNotEmpty, IsString, Length } from 'class-validator';
-import { getAppConfig } from '../../../config';
+import { IsEnum, IsIn, IsNotEmpty, IsString, Length } from 'class-validator';
+import { getAppConfig, getShopSettingsConfig } from '../../../config';
+import { PaymentMethod } from '../../payment/types/PaymentMethod';
 
 const {
     captcha: { length: captchaLength }
 } = getAppConfig();
 
+const { enabledPaymentMethods } = getShopSettingsConfig();
+
 export class PayCheckoutDto {
     @IsNotEmpty()
     @IsString()
@@ -12,4 +15,9 @@ export class PayCheckoutDto {
         message: `Captcha should be ${captchaLength} characters long`
     })
     captcha: string;
+
+    @IsNotEmpty()
+    @IsEnum(PaymentMethod)
+    @IsIn(enabledPaymentMethods, { message: 'Select a valid payment method' })
+    paymentMethod: PaymentMethod;
 }

backend/src/modules/storefrontCheckout/services/CheckoutSessionService.spec.ts

@@ -38,8 +38,6 @@ const buildSummary = (overrides: Partial<CookieCartSummary> = {}): CookieCartSum
         discounts: [{ code: 'SAVE1', amount: 1, issueMessage: null }],
         cartDiscountTotal: 1,
         cartTotalPrice: 9,
-        cartTotalXmr: '0.06000000',
-        fiatPerXmr: 150,
         hasManualLines: false,
         hasAutoLines: true,
         cartTotalIssueMessage: null,
@@ -115,15 +113,15 @@ describe('CheckoutSessionService', () => {
 
     describe('createFromCartSummary', () => {
         it('rejects an empty cart', async () => {
-            await expect(service.createFromCartSummary(buildSummary({ cartExtended: [] }))).rejects.toThrow(
-                new BadRequestException('Your cart is empty')
-            );
+            await expect(
+                service.createFromCartSummary(buildSummary({ cartExtended: [] }), PaymentMethod.Xmr)
+            ).rejects.toThrow(new BadRequestException('Your cart is empty'));
         });
 
         it('rejects carts that still have unresolved issues', async () => {
-            await expect(service.createFromCartSummary(buildSummary({ hasIssues: true }))).rejects.toThrow(
-                new BadRequestException('Resolve cart issues before paying')
-            );
+            await expect(
+                service.createFromCartSummary(buildSummary({ hasIssues: true }), PaymentMethod.Xmr)
+            ).rejects.toThrow(new BadRequestException('Resolve cart issues before paying'));
         });
 
         it('creates a session, invoice, lines, and valid discounts from the cart summary', async () => {
@@ -135,7 +133,7 @@ describe('CheckoutSessionService', () => {
                 ]
             });
 
-            const session = await service.createFromCartSummary(summary);
+            const session = await service.createFromCartSummary(summary, PaymentMethod.Xmr);
 
             expect(invoiceService.issueInvoice).toHaveBeenCalledWith({
                 paymentMethod: PaymentMethod.Xmr,
@@ -180,7 +178,8 @@ describe('CheckoutSessionService', () => {
             await service.createFromCartSummary(
                 buildSummary({
                     discounts: [{ code: 'BAD', amount: null, issueMessage: 'Invalid discount code' }]
-                })
+                }),
+                PaymentMethod.Xmr
             );
 
             expect(discountRepo.create).not.toHaveBeenCalled();
@@ -190,6 +189,17 @@ describe('CheckoutSessionService', () => {
                 })
             );
         });
+
+        it('issues a bitcoin checkout invoice when that payment method is selected', async () => {
+            await service.createFromCartSummary(buildSummary(), PaymentMethod.Btc);
+
+            expect(invoiceService.issueInvoice).toHaveBeenCalledWith({
+                paymentMethod: PaymentMethod.Btc,
+                reason: InvoiceReason.Checkout,
+                contextId: 'session-uuid',
+                amountFiat: 9
+            });
+        });
     });
 
     describe('findById', () => {
@@ -200,7 +210,14 @@ describe('CheckoutSessionService', () => {
             await expect(service.findById('session-1')).resolves.toBe(session);
             expect(sessionRepo.findOne).toHaveBeenCalledWith({
                 where: { id: 'session-1' },
-                relations: ['lines', 'discounts', 'invoice', 'invoice.moneroDetails', 'invoice.payments']
+                relations: [
+                    'lines',
+                    'discounts',
+                    'invoice',
+                    'invoice.moneroDetails',
+                    'invoice.btcDetails',
+                    'invoice.payments'
+                ]
             });
         });
     });

backend/src/modules/storefrontCheckout/services/CheckoutSessionService.ts

@@ -30,7 +30,10 @@ export class CheckoutSessionService {
         });
     }
 
-    async createFromCartSummary(summary: CookieCartSummary): Promise<CheckoutSession> {
+    async createFromCartSummary(
+        summary: CookieCartSummary,
+        requestedPaymentMethod: PaymentMethod
+    ): Promise<CheckoutSession> {
         if (summary.cartExtended.length === 0) {
             throw new BadRequestException('Your cart is empty');
         }
@@ -42,7 +45,7 @@ export class CheckoutSessionService {
         const sessionId = randomUUID();
 
         const invoice = await this.invoiceService.issueInvoice({
-            paymentMethod: PaymentMethod.Xmr,
+            paymentMethod: requestedPaymentMethod,
             reason: InvoiceReason.Checkout,
             contextId: sessionId,
             amountFiat: summary.cartTotalPrice