Add schemas for account balances

core/clients/aggregators/nordigen.py

@@ -180,7 +180,7 @@ class NordigenClient(BaseClient, AggregatorClient):
         """
 
         path = f"accounts/{account_id}/balances"
-        response = await self.call(path, schema="AccountBalance")
+        response = await self.call(path, schema="AccountBalances")
 
         total = 0
         currency = None

core/lib/schemas/nordigen_s.py

@@ -128,3 +128,20 @@ class AccountDetails(BaseModel):
 AccountDetailsSchema = {
     "account": "account",
 }
+
+
+class AccountBalance(BaseModel):
+    balanceAmount: dict[str, str]
+    balanceType: str
+    referenceDate: str
+
+
+class AccountBalances(BaseModel):
+    balances: list[AccountBalance]
+    summary: str | None
+
+
+AccountBalancesSchema = {
+    "balances": "balances",
+    "summary": "summary",
+}