feat: add price_tag table and routes

Linked issue: #611

open_prices/api/prices/serializers.py

@@ -6,7 +6,7 @@
 from open_prices.locations.models import Location
 from open_prices.prices.models import Price
 from open_prices.products.models import Product
-from open_prices.proofs.models import Proof
+from open_prices.proofs.models.proof import Proof
 
 
 class PriceSerializer(serializers.ModelSerializer):

open_prices/api/prices/tests.py

@@ -13,7 +13,7 @@
 from open_prices.products.models import Product
 from open_prices.proofs import constants as proof_constants
 from open_prices.proofs.factories import ProofFactory
-from open_prices.proofs.models import Proof
+from open_prices.proofs.models.proof import Proof
 from open_prices.users.factories import SessionFactory
 
 PRICE_8001505005707 = {

open_prices/api/proofs/filters.py

@@ -1,6 +1,6 @@
 import django_filters
 
-from open_prices.proofs.models import Proof
+from open_prices.proofs.models.proof import Proof
 
 
 class ProofFilter(django_filters.FilterSet):
@@ -38,3 +38,10 @@ class Meta:
             "owner",
             "price_count",
         ]
+
+
+class PriceTagFilter(django_filters.FilterSet):
+    status__isnull = django_filters.BooleanFilter(
+        field_name="status", lookup_expr="isnull"
+    )
+    status = django_filters.CharFilter(field_name="status", lookup_expr="exact")

open_prices/api/proofs/serializers.py

@@ -2,7 +2,9 @@
 
 from open_prices.api.locations.serializers import LocationSerializer
 from open_prices.locations.models import Location
-from open_prices.proofs.models import Proof, ProofPrediction
+from open_prices.prices.models import Price
+from open_prices.proofs.models.price_tag import PriceTag
+from open_prices.proofs.models.proof import Proof, ProofPrediction
 
 
 class ProofPredictionSerializer(serializers.ModelSerializer):
@@ -81,3 +83,42 @@ class ProofProcessWithGeminiSerializer(serializers.Serializer):
     mode = (
         serializers.CharField()
     )  # TODO: this mode param should be used to select the prompt to execute, unimplemented for now
+
+
+class PriceTagSerializer(serializers.ModelSerializer):
+    price_id = serializers.PrimaryKeyRelatedField(read_only=True)
+
+    class Meta:
+        model = PriceTag
+        exclude = ["price", "proof"]
+
+
+class PriceTagFullSerializer(PriceTagSerializer):
+    proof = ProofSerializer()
+
+    class Meta:
+        model = PriceTag
+        exclude = ["price"]
+
+
+class PriceTagCreateSerializer(serializers.ModelSerializer):
+    proof_id = serializers.PrimaryKeyRelatedField(
+        queryset=Proof.objects.all(), source="proof"
+    )
+    price_id = serializers.PrimaryKeyRelatedField(
+        queryset=Price.objects.all(), source="price", required=False
+    )
+
+    class Meta:
+        model = PriceTag
+        fields = PriceTag.CREATE_FIELDS
+
+
+class PriceTagUpdateSerializer(serializers.ModelSerializer):
+    price_id = serializers.PrimaryKeyRelatedField(
+        queryset=Price.objects.all(), source="price"
+    )
+
+    class Meta:
+        model = PriceTag
+        fields = PriceTag.UPDATE_FIELDS