c3lf-system-3/core/inventory/api_v1.py

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from datetime import datetime
from django.urls import path
from rest_framework import routers, viewsets, serializers
from rest_framework.decorators import api_view, permission_classes, authentication_classes
from rest_framework.response import Response
from files.models import File
from inventory.models import Event, Container, Item
class EventSerializer(serializers.ModelSerializer):
class Meta:
model = Event
fields = ['eid', 'slug', 'name', 'start', 'end', 'pre_start', 'post_end']
read_only_fields = ['eid']
class EventViewSet(viewsets.ModelViewSet):
serializer_class = EventSerializer
queryset = Event.objects.all()
permission_classes = []
authentication_classes = []
class ContainerSerializer(serializers.ModelSerializer):
itemCount = serializers.SerializerMethodField()
class Meta:
model = Container
fields = ['cid', 'name', 'itemCount']
read_only_fields = ['cid', 'itemCount']
def get_itemCount(self, instance):
return Item.objects.filter(container=instance.cid).count()
class ContainerViewSet(viewsets.ModelViewSet):
serializer_class = ContainerSerializer
queryset = Container.objects.all()
permission_classes = []
authentication_classes = []
class ItemSerializer(serializers.ModelSerializer):
cid = serializers.SerializerMethodField()
box = serializers.SerializerMethodField()
file = serializers.SerializerMethodField()
class Meta:
model = Item
fields = ['cid', 'box', 'uid', 'description', 'file']
read_only_fields = ['uid']
def get_cid(self, instance):
return instance.container.cid
def get_box(self, instance):
return instance.container.name
def get_file(self, instance):
if len(instance.files.all()) > 0:
return instance.files.all().order_by('-created_at')[0].hash
return None
def to_internal_value(self, data):
if 'cid' in data:
container = Container.objects.get(cid=data['cid'])
internal = super().to_internal_value(data)
internal['container'] = container
return internal
return super().to_internal_value(data)
def validate(self, attrs):
attrs.pop('dataImage', None)
return super().validate(attrs)
def create(self, validated_data):
if 'dataImage' in validated_data:
file = File.objects.create(data=validated_data['dataImage'], iid=validated_data['iid'])
validated_data.pop('dataImage')
return Item.objects.create(**validated_data)
def update(self, instance, validated_data):
if 'returned' in validated_data:
if validated_data['returned']:
validated_data['returned_at'] = datetime.now()
validated_data.pop('returned')
if 'dataImage' in validated_data:
file = File.objects.create(data=validated_data['dataImage'], iid=instance.iid)
validated_data.pop('dataImage')
return super().update(instance, validated_data)
@api_view(['GET'])
@permission_classes([])
@authentication_classes([])
def search_items(request, event_slug, query):
event = Event.objects.get(slug=event_slug)
query_tokens = query.split(' ')
q = Item.objects.filter(event=event)
for token in query_tokens:
if token:
q = q.filter(description__icontains=token)
return Response(ItemSerializer(q, many=True).data)
@api_view(['GET', 'POST'])
@permission_classes([])
@authentication_classes([])
def item(request, event_slug):
event = Event.objects.get(slug=event_slug)
if request.method == 'GET':
return Response(ItemSerializer(Item.objects.filter(event=event), many=True).data)
elif request.method == 'POST':
validated_data = ItemSerializer(data=request.data)
if validated_data.is_valid():
validated_data.save(event=event)
return Response(validated_data.data, status=201)
@api_view(['GET', 'PUT', 'DELETE'])
@permission_classes([])
@authentication_classes([])
def item_by_id(request, event_slug, id):
try:
event = Event.objects.get(slug=event_slug)
item = Item.objects.get(event=event, uid=id)
if request.method == 'GET':
return Response(ItemSerializer(item).data)
elif request.method == 'PUT':
validated_data = ItemSerializer(item, data=request.data)
if validated_data.is_valid():
validated_data.save()
return Response(validated_data.data)
elif request.method == 'DELETE':
item.delete()
return Response(status=204)
except Item.DoesNotExist:
return Response(status=404)
router = routers.SimpleRouter()
router.register(r'events', EventViewSet, basename='events')
router.register(r'boxes', ContainerViewSet, basename='boxes')
router.register(r'box', ContainerViewSet, basename='boxes')
urlpatterns = router.urls + [
path('<event_slug>/items/', item),
path('<event_slug>/items/<query>/', search_items),
path('<event_slug>/item/', item),
path('<event_slug>/item/<id>/', item_by_id),
]