first cart buy

alkator/urls.py

@@ -24,7 +24,7 @@ from alkatorapi.views import (
     invoice, upload_files,
     login_status, change_racer,
     products, cart_add, cart, cart_delete,
-    cart_decrease,
+    cart_decrease, cart_buy
 )
 
 urlpatterns = [
@@ -35,7 +35,6 @@ urlpatterns = [
     path('api/login_status', login_status),
     path('api/logout', logout),
     path('api/change_racer', change_racer),
-    #path('api/register', register),
     path('api/results', results),
     path('api/photos', photos),
     path('api/payment_result', payment_result),
@@ -47,4 +46,5 @@ urlpatterns = [
     path('api/cart', cart),
     path('api/cart/delete', cart_delete),
     path('api/cart/decrease', cart_decrease),
+    path('api/cart/buy', cart_buy)
 ]

alkatorapi/views.py

@@ -9,6 +9,7 @@ from django.contrib.auth import authenticate
 from django.contrib.auth import login as auth_login, logout as auth_logout
 from django.core.mail import send_mail, mail_admins, EmailMessage
 from django.db.utils import IntegrityError
+from django.db import transaction
 from django.utils.datastructures import MultiValueDictKeyError
 from datetime import date, datetime, timedelta
 from weasyprint import HTML
@@ -374,6 +375,68 @@ def cart_add(request):
     return HttpResponse('{"status":"success", "reason":"Úspěšně přidáno do košíku."}', status=200)
 
 
+def select_delivery(request):
+    pass
+
+
+@csrf_exempt
+@transaction.atomic
+def cart_buy(request):
+    cart = request.user.cart
+    user = request.user
+    profile = user.profile
+    cart_products = CartProduct.objects.filter(cart=cart)
+
+    for cp in cart_products:
+        if cp.quantity > cp.product.quantity:
+            return HttpResponse('{"status": "failed", "reason": "Nemáme dostatek ' + cp.product.name + ' na skladě!"}', status=400)
+
+    invoice = Invoice(
+        user=user,
+        address=user.profile.address,
+        invoice_id=Invoice.next_invoice_id()
+    )
+    invoice.save()
+
+    for cp in cart_products:
+        ip = InvoiceProduct(
+            invoice=invoice,
+            price=cp.product.price,
+            quantity=cp.quantity,
+            product=cp.product,
+        )
+        cp.product.quantity -= cp.quantity
+        cp.product.save()
+        ip.save()
+
+    payment_data = {
+        'merchant': COMGATE_MERCHANT,
+        'test': 'true' if COMGATE_TEST else 'false',
+        'price': invoice.calculate_total_price() * 100,
+        'curr': 'CZK',
+        'method': 'ALL',
+        'label': 'Merch Alkátor Race',
+        'email': user.email,
+        'fullName': f"{profile.first_name} {profile.last_name}",
+        'refId': f'{invoice.invoice_id}',
+        'secret': COMGATE_SECRET,
+        'prepareOnly': 'true',
+    }
+    result = requests.post('https://payments.comgate.cz/v1.0/create', data=payment_data)
+
+    result = parse_qs(result.text)
+
+    if result['code'][0] != '0':
+        racer.delete()
+        invoice.delete()
+        return HttpResponse('{"reason":"Chyba na straně platební brány: ' + result['message'][0] + ', zkuste prosím nákup později."}', status=400, content_type='application/json')
+
+    invoice.trans_id = result['transId'][0]
+    invoice.save()
+
+    return HttpResponse('{"success":"", "redirect":"' + result['redirect'][0] + '"}', content_type='application/json')
+
+
 def cart_delete(request):
     _id = request.GET['id']
     user = request.user

frontend/src/scripts/index.js

@@ -338,7 +338,7 @@ class Main extends Component {
                     <td>Celkem</td>
                     <td></td>
                     <td>{this.calculateTotalPrice()} Kč</td>
-                    <td></td>
+                    <td><form action='/api/cart/buy' onSubmit={(e) => this.onSubmit(e)}><button type="submit">Koupit</button></form></td>
                 </tr>
             </tbody>
         </table>