Fkm/get session view

backend/bittan/bittan/urls.py

@@ -25,7 +25,7 @@
 from .api.swish import debug_cancel, swish_callback, debug_make_request, debug_synchronize_request
 
 from bittan.views.staffpage_views import create_tickets, filter_ticket_type_from_chapter_event, resend_email, staff_dashboard, update_payment, update_tickets, send_mass_email
-from bittan.views import validate_ticket, get_chapter_events, start_payment, submit_form, reserve_ticket, get_session_payment_status
+from bittan.views import get_chapter_events, get_session, get_session_payment_status, reserve_ticket, start_payment, submit_form, validate_ticket
 
 _prefix = get_bittan_backend_url_path_prefix()
 
@@ -35,8 +35,9 @@
 	path(_prefix+'get_chapterevents/', get_chapter_events),
     path(_prefix+'validate_ticket/', validate_ticket),
     path(_prefix+"reserve_ticket/", reserve_ticket),
+    path(_prefix+'session_payment_status/<slug:session_id>', get_session_payment_status),
+    path(_prefix+"get_session/<slug:session_id>/", get_session),
     path(_prefix+"submit_form/", submit_form),
-    path(_prefix+'session_payment_status/', get_session_payment_status),
     path(_prefix+"start_payment/", start_payment),
     path(_prefix+"generate_qr/<str:token>", get_qr),
     path(_prefix+"accounts/login/", django_views.LoginView.as_view(), name="login"),

backend/bittan/bittan/views/__init__.py

@@ -3,5 +3,5 @@
 from bittan.views.start_payment import start_payment
 from bittan.views.reserve_ticket import reserve_ticket
 from bittan.views.get_session_payment_status import get_session_payment_status
+from bittan.views.get_session import get_session
 from bittan.views.submit_form import submit_form
-

backend/bittan/bittan/views/get_session.py

@@ -0,0 +1,65 @@
+from rest_framework.response import Response
+from rest_framework.request import Request
+from rest_framework.decorators import api_view
+from rest_framework import serializers, status
+
+from bittan.models import AnswerSelectedOptions, Payment
+
+from django.utils import timezone
+from django.db.models import Count, Prefetch
+
+class TicketSerializer(serializers.Serializer):
+    ticket_type = serializers.PrimaryKeyRelatedField(read_only=True)
+    count = serializers.IntegerField()
+
+class AnswerSelectedOptionsSerializer(serializers.ModelSerializer):
+    class Meta:
+        model = AnswerSelectedOptions
+        fields = ["option"]
+
+
+@api_view(["GET"])
+def get_session(request: Request, session_id: str) -> Response:
+    payment: Payment
+    try:
+        payment = Payment.objects.get(id=session_id)
+    except Payment.DoesNotExist:
+        return Response("Session not found", status=404)
+
+    tickets = payment.ticket_set
+    ticket_data = list(
+        tickets.values("ticket_type").annotate(count=Count("ticket_type"))
+    )
+
+    if tickets.count() > 1:
+        return Response({
+            "status": payment.status,
+            "tickets": ticket_data
+        })
+
+    ticket = tickets.first()
+    answers = ticket.answer_set.prefetch_related(
+                    Prefetch(
+                        'answerselectedoptions_set',
+                        queryset=AnswerSelectedOptions.objects.order_by('pk'),
+                        to_attr='selected_options_prefetched'
+                    )
+                )
+    answer_data = []
+    for answer in answers:
+        selected_options = answer.answerselectedoptions_set.all()
+        options = [selected_option.question_option.pk for selected_option in selected_options]
+        texts = [selected_option.text for selected_option in selected_options]
+        answer_data.append(
+            {
+                "question_id": answer.question.pk,
+                "options_ids": options,
+                "option_texts": texts,
+            }
+        )
+    return Response({
+            "status": payment.status,
+            "tickets": ticket_data,
+            "answers": answer_data
+
+        })

docs/backend_endpoints.md

@@ -1,6 +1,7 @@
 # Backend endpoints
 
 - [/get_chapterevents/](#get-chapterevents)
+- [/get_session/](#get-session)
 - [/reserve_ticket/](#reserve-ticket)
 - [/session_payment_status/](#session-payment-status)
 - [/start_payment/](#start-payment)
@@ -58,6 +59,72 @@ Example of response content:
     ]
 }
 ```
+## Get session
+
+`GET /get_session/<payment_id>`
+
+Retrieves the data of a session. Retrieves the associated tickets, payment status, and if there is a form attached to the event, the answers to the form. 
+The tickets list consits of objects with a corresponding ticket type as well as the number of tickets of this type that is associated with the session. 
+The answers list contains answer to the chapter event's associated form if there exists one. Each object in this list contains the question id, 
+a list with the selected options, as welll as a list with the texts asscioated with the option. The texts are linked to their corresponding option 
+by having mathing indicies in their respective list. The answers array is only attached if there exists a form for the event.  
+
+Example of response content:
+```json
+{
+    "status": "FORM_SUBMITTED",
+    "tickets": [
+        {
+            "ticket_type": 1,
+            "count": 1
+        }
+    ],
+    "answers": [
+        {
+            "question": 1,
+            "options": [
+                1
+            ],
+            "texts": [
+                "Wohohoh"
+            ]
+        },
+        {
+            "question": 2,
+            "options": [
+                2,
+                3,
+                4
+            ],
+            "texts": [
+                "",
+                "",
+                "Allt"
+            ]
+        },
+        {
+            "question": 3,
+            "options": [
+                5
+            ],
+            "texts": [
+                ""
+            ]
+        },
+        {
+            "question": 4,
+            "options": [
+                7,
+                8
+            ],
+            "texts": [
+                "",
+                ""
+            ]
+        }
+    ]
+}
+```
 ## Reserve ticket
 
 `POST /reserve_ticket/`