Aarni Halinen
328 lines
13 KiB
Python
328 lines
13 KiB
Python
"""Webapp views."""
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from jwt import decode
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from jwt.exceptions import InvalidSignatureError
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from django.utils import timezone
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from dealer.git import git
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from django.conf import settings
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from django.http import HttpResponse, JsonResponse
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from django.shortcuts import render, get_object_or_404
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from django.views.decorators.http import require_http_methods
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from django_filters import rest_framework as filters
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from django.db.models import Prefetch
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from django.core.exceptions import ObjectDoesNotExist
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from rest_framework import routers
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from rest_framework.response import Response
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from rest_framework.viewsets import ModelViewSet, ReadOnlyModelViewSet
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from rest_framework.filters import OrderingFilter, SearchFilter
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from rest_framework.decorators import action
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from rest_framework.permissions import IsAuthenticatedOrReadOnly, BasePermission, AllowAny, IsAuthenticated
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from jsonschema import validate
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from jsonschema.exceptions import ValidationError
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from webapp.models import *
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from webapp.serializers import *
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from webapp.utils import admin_send_email_signupees, decode_base64_file
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class SignupPermission(BasePermission):
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def has_permission(self, request, view):
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if request.method == 'POST':
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return True
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return request.user and request.user.is_authenticated
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# -- REST API -- #
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class RootView(routers.APIRootView):
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permission_classes = [IsAuthenticatedOrReadOnly]
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class EventViewSet(ModelViewSet):
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queryset = Event.objects.filter(deleted=False)
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ordering = ["start_time"]
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serializer_class = EventSerializer
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permission_classes = [IsAuthenticatedOrReadOnly]
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filter_backends = (filters.DjangoFilterBackend, SearchFilter, OrderingFilter)
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filter_fields = ('id', 'tags', 'visible', 'signupForm')
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search_fields = ('id', 'tags', 'visible', 'signupForm')
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def get_queryset(self):
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# TODO: For create and update, this return old data in signupForm field (prefetched)...
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if self.request.user.is_authenticated or \
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self.request.method == 'POST' or \
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self.request.method == 'PUT':
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return Event.objects.filter(deleted=False).prefetch_related(
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Prefetch('signupForm', queryset=SignupForm.objects.filter(deleted=False), to_attr='filtered_signup_forms')
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)
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since = self.request.query_params.get('since', None)
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if since:
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return Event.objects.filter(deleted=False, visible=True, end_time__gt=since).order_by('start_time').prefetch_related(
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Prefetch('signupForm', queryset=SignupForm.objects.filter(deleted=False, visible=True), to_attr='filtered_signup_forms')
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)
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return Event.objects.filter(deleted=False, visible=True, end_time__gt=timezone.now()).order_by('start_time').prefetch_related(
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Prefetch('signupForm', queryset=SignupForm.objects.filter(deleted=False, visible=True), to_attr='filtered_signup_forms')
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)
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def create(self, request, *args, **kwargs):
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raw_image = request.data.get("image", None)
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if raw_image is not None:
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image = decode_base64_file(raw_image)
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request.data.update({
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"image": image
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})
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return super().create(request, *args, **kwargs)
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def update(self, request, *args, **kwargs):
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raw_image = request.data.get("image", None)
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if raw_image is not None:
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image = decode_base64_file(raw_image)
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request.data.update({
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"image": image
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})
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return super().update(request, *args, **kwargs)
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def destroy(self, request, pk=None, *args, **kwargs):
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try:
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event = self.get_object()
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event.deleted = True
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event.save()
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return JsonResponse(status=200, data={"message": "OK"})
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except ObjectDoesNotExist:
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return JsonResponse(status=404, data={"error": f"Event {pk} not found"})
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class SignupFormViewSet(ModelViewSet):
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queryset = SignupForm.objects.filter(deleted=False)
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ordering = ["start_time"]
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serializer_class = SignupFormSerializer
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permission_classes = [IsAuthenticatedOrReadOnly]
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def create(self, request, *args, **kwargs):
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try:
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schema = {
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"type": "array",
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}
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validate(instance=request.data["questions"], schema=schema)
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return super().create(request, *args, **kwargs)
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except ValidationError as err:
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return JsonResponse(status=400, data={"error": err.message})
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def get_queryset(self):
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if self.request.user.is_authenticated:
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return SignupForm.objects.filter(deleted=False).order_by('start_time')
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return SignupForm.objects.filter(deleted=False, visible=True).order_by('start_time')
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def destroy(self, request, pk=None, *args, **kwargs):
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try:
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form = self.get_object()
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form.deleted = True
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form.save()
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return JsonResponse(status=200, data={"message": "OK"})
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except ObjectDoesNotExist:
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return JsonResponse(status=404, data={"error": f"SignupForm {pk} not found"})
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@action(detail=True, methods=['post'], permission_classes=[IsAuthenticated])
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def sendemail(self, request, pk=None, *args, **kwargs):
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subject = request.data["subject"]
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content = request.data["content"]
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mode = request.data["mode"]
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queryset = self.filter_queryset(self.get_queryset())
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filter = {'pk': pk}
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signupForm = get_object_or_404(queryset, **filter)
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if (mode == "all"):
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admin_send_email_signupees(signupForm.signups, subject, content)
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return JsonResponse(status=201, data={"message": "Email sent"})
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elif (mode == "actual"):
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admin_send_email_signupees(signupForm.signups[:signupForm.quota], subject, content)
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return JsonResponse(status=201, data={"message": "Email sent"})
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elif (mode == "reserved"):
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admin_send_email_signupees(signupForm.signups[signupForm.quota:], subject, content)
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return JsonResponse(status=201, data={"message": "Email sent"})
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else:
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return JsonResponse(status=400, data={"error": f"Bad mode '{mode}'"})
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@action(detail=True, methods=['get'], permission_classes=[IsAuthenticated])
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def signups(self, request, pk=None, *args, **kwargs):
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queryset = self.filter_queryset(self.get_queryset())
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filter = {'pk': pk}
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signupForm = get_object_or_404(queryset, **filter)
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return Response(SignupSerializer(signupForm.signups, many=True).data)
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class SignupViewSet(ModelViewSet):
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queryset = Signup.objects.filter(deleted=False)
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serializer_class = SignupSerializer
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permission_classes = [SignupPermission]
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@action(detail=True, methods=['get', 'put'], permission_classes=[AllowAny])
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def edit(self, request, pk=None, *args, **kwargs):
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uuid = request.query_params.get("uuid", None)
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queryset = self.filter_queryset(self.get_queryset())
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filter = {'pk': pk, 'uuid': uuid}
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get_object_or_404(queryset, **filter)
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if request.method == 'GET':
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return self.retrieve(request, *args, **kwargs)
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elif request.method == 'PUT':
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return self.partial_update(request, *args, **kwargs)
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def create(self, request, *args, **kwargs):
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id = request.data["signupForm_id"]
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try:
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answer = request.data["answer"]
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form = SignupForm.objects.get(id=id)
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if (form.isOpen):
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# Throws ValidationError if not valid
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validate(instance=answer, schema=form.schema)
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return super().create(request, *args, **kwargs)
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except ValidationError as inst:
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return JsonResponse(status=400, data={"error": inst.message})
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except ObjectDoesNotExist:
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return JsonResponse(status=404, data={"error": f"SignupForm {id} not found"})
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else:
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return JsonResponse(status=404, data={"error": f"SignupForm {id} not found"})
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def partial_update(self, request, pk=None, *args, **kwargs):
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try:
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# ID & UUID validated in edit @action for normal users.
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# This is otherwise open for authenticated users.
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signup = self.get_object()
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answer = request.data["answer"]
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form = SignupForm.objects.get(id=signup.signupForm_id)
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if (form.visible):
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# Throws ValidationError if not valid
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validate(instance=answer, schema=form.schema)
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return super().partial_update(request, *args, **kwargs)
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except ValidationError as inst:
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return JsonResponse(status=400, data={"error": inst.message})
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except ObjectDoesNotExist:
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return JsonResponse(status=404, data={"error": f"SignupForm {id} not found"})
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else:
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return JsonResponse(status=404, data={"error": f"SignupForm {id} not found"})
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def destroy(self, request, pk=None, *args, **kwargs):
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try:
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signup = self.get_object()
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signup.deleted = True
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signup.save()
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return JsonResponse(status=200, data={"message": "OK"})
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except ObjectDoesNotExist:
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return JsonResponse(status=404, data={"error": f"Signup {pk} not found"})
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class SavedQuestionsViewSet(ModelViewSet):
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queryset = TemplateQuestion.objects.filter(deleted=False)
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serializer_class = SavedQuestionsSerializer
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permission_classes = [IsAuthenticatedOrReadOnly]
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def destroy(self, request, pk=None, *args, **kwargs):
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try:
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question = self.get_object()
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question.deleted = True
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question.save()
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return JsonResponse(status=200, data={"message": "OK"})
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except ObjectDoesNotExist:
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return JsonResponse(status=404, data={"error": f"Template question {pk} not found"})
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class FeedViewSet(ModelViewSet):
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queryset = Feed.objects.filter(deleted=False)
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serializer_class = FeedSerializer
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permission_classes = [IsAuthenticatedOrReadOnly]
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filter_backends = (filters.DjangoFilterBackend, SearchFilter, OrderingFilter)
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filter_fields = ('id', 'tags', 'visible')
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search_fields = ('id', 'tags', 'visible')
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def get_queryset(self):
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if self.request.user.is_authenticated:
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return Feed.objects.filter(deleted=False).order_by('-publish_time')
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else:
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objs = Feed.objects.filter(deleted=False, visible=True).order_by('-publish_time')
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# TODO: Bad filtering. Rewrite!
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result_ids = []
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for obj in objs:
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if obj.autohide_enabled:
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if obj.autohide > timezone.now():
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result_ids.append(obj.id)
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else:
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result_ids.append(obj.id)
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return Feed.objects.filter(id__in=result_ids).order_by('-publish_time')
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def destroy(self, request, pk=None, *args, **kwargs):
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try:
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post = self.get_object()
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post.deleted = True
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post.save()
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return JsonResponse(status=200, data={"message": "OK"})
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except ObjectDoesNotExist:
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return JsonResponse(status=404, data={"error": f"Post {pk} not found"})
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class TagsViewSet(ReadOnlyModelViewSet):
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queryset = Tag.objects.all()
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serializer_class = TagSerializer
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permission_classes = [IsAuthenticatedOrReadOnly]
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class JobAdViewSet(ModelViewSet):
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queryset = JobAd.objects.filter(deleted=False)
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serializer_class = JobAdSerializer
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permission_classes = [IsAuthenticatedOrReadOnly]
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def get_queryset(self):
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if self.request.user.is_authenticated:
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return JobAd.objects.filter(deleted=False)
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return JobAd.objects.filter(deleted=False, visible=True, autohide_at__gt=timezone.now())
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def destroy(self, request, pk=None, *args, **kwargs):
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try:
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ad = self.get_object()
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ad.deleted = True
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ad.save()
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return JsonResponse(status=200, data={"message": "OK"})
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except ObjectDoesNotExist:
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return JsonResponse(status=404, data={"error": f"Job Ad {pk} not found"})
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@require_http_methods(["GET"])
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def about_view(request, *args, **kwargs):
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"""Render about page."""
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latest_commit = "Not found"
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latest_date = "Not found"
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latest_tag = "Not found"
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try:
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repo = git.init_repo()
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latest_commit = repo.git("rev-parse HEAD").decode('utf-8')
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latest_date = repo.git("show -s --format=%ci " + latest_commit).decode('utf-8')
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latest_tag = repo.git("describe --tags " + repo.git("rev-list --tags --max-count=1").decode('utf-8')).decode('utf-8')
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except Exception as e:
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print(f"Git failed:\n{e}")
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context = {
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'commit': latest_commit,
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'date': latest_date,
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'tag': latest_tag
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}
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return render(request, "about.html", context)
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@require_http_methods(["GET"])
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def nginx_jwt_resp(request, *args, **kwargs):
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cookie = request.COOKIES.get("jwt", None)
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if not cookie:
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return HttpResponse("", status=401)
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try:
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token = decode(cookie, settings.SECRET_KEY)
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except InvalidSignatureError:
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return HttpResponse("", status=403)
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user = 'admin' if token.get('username', '') == 'admin' else 'moderator'
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resp = HttpResponse("", status=200)
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resp['X-FBrowser-User'] = user
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return resp
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