Add endpoint /tokens/lists

- Closes #2342

safe_transaction_service/tokens/serializers.py

@@ -3,7 +3,7 @@
 from rest_framework import serializers
 from safe_eth.eth.django.serializers import EthereumAddressField
 
-from .models import Token
+from .models import Token, TokenList
 
 
 class TokenTransferInfoType(Enum):
@@ -37,3 +37,9 @@ class TokenPriceResponseSerializer(serializers.Serializer):
     fiat_code = serializers.CharField()
     fiat_price = serializers.CharField()
     timestamp = serializers.DateTimeField()
+
+
+class TokenListSerializer(serializers.ModelSerializer):
+    class Meta:
+        model = TokenList
+        fields = ["url", "description"]

safe_transaction_service/tokens/tests/factories.py

@@ -24,3 +24,4 @@ class Meta:
         model = models.TokenList
 
     url = factory.Faker("url")
+    description = factory.Faker("company")

safe_transaction_service/tokens/tests/test_views.py

@@ -2,6 +2,7 @@
 from unittest import mock
 from unittest.mock import MagicMock
 
+from django.core.cache import cache
 from django.urls import reverse
 
 from eth_account import Account
@@ -12,7 +13,7 @@
 from safe_eth.safe.tests.safe_test_case import SafeTestCaseMixin
 
 from ..models import Token
-from .factories import TokenFactory
+from .factories import TokenFactory, TokenListFactory
 
 logger = logging.getLogger(__name__)
 
@@ -104,3 +105,23 @@ def test_tokens_view(self):
                 }
             ],
         )
+
+    def test_token_lists_view(self):
+        response = self.client.get(reverse("v1:tokens:token-lists"))
+        self.assertEqual(response.data["results"], [])
+        token_list = TokenListFactory()
+        # Check cache
+        self.assertEqual(response.data["results"], [])
+
+        cache.clear()
+
+        response = self.client.get(reverse("v1:tokens:token-lists"))
+        self.assertEqual(
+            response.data["results"],
+            [
+                {
+                    "url": token_list.url,
+                    "description": token_list.description,
+                }
+            ],
+        )

safe_transaction_service/tokens/urls.py

@@ -6,5 +6,6 @@
 
 urlpatterns = [
     path("", views.TokensView.as_view(), name="list"),
+    path("lists/", views.TokenListsView.as_view(), name="token-lists"),
     path("<str:address>/", views.TokenView.as_view(), name="detail"),
 ]

safe_transaction_service/tokens/views.py

@@ -10,7 +10,7 @@
 
 from ..history.serializers import CodeErrorResponse
 from . import filters, serializers
-from .models import Token
+from .models import Token, TokenList
 
 
 @extend_schema(
@@ -64,3 +64,16 @@ def get(self, request, *args, **kwargs):
         Returns the list of tokens supported in the Safe Transaction Service
         """
         return super().get(request, *args, **kwargs)
+
+
+class TokenListsView(ListAPIView):
+    serializer_class = serializers.TokenListSerializer
+    ordering = ("pk",)
+    queryset = TokenList.objects.all()
+
+    @method_decorator(cache_page(60 * 15))  # Cache 15 minutes
+    def get(self, request, *args, **kwargs):
+        """
+        Returns the list of tokens supported in the Safe Transaction Service
+        """
+        return super().get(request, *args, **kwargs)