fix errors merchant

Co-Authored-By: itsdeka <dario.moceri@bitfinex.com>

bfxapi/rest/endpoints/rest_authenticated_endpoints.py

@@ -340,3 +340,12 @@ class RestAuthenticatedEndpoints(Middleware):
         data = to_snake_case_keys(self._POST("auth/w/ext/pay/invoice/create", body=body))
         
         return InvoiceSubmission.parse(data)
+
+    def get_invoices(self, id: Optional[str] = None, start: Optional[str] = None, end: Optional[str] = None, limit: Optional[int] = None) -> List[InvoiceSubmission]:
+        return [ InvoiceSubmission.parse(sub_data) for sub_data in self._POST("auth/r/ext/pay/invoices", body={
+            "id": id, "start": start, "end": end, 
+            "limit": limit
+        }) ]
+
+    def get_invoice_count_stats(self, status: Literal["CREATED", "PENDING", "COMPLETED", "EXPIRED"], format: str) -> List[InvoiceCountStats]:
+        return [ InvoiceCountStats(**sub_data) for sub_data in self._POST("auth/r/ext/pay/invoice/stats/count", body={  "status": status, "format": format }) ]

bfxapi/rest/types.py

@@ -564,7 +564,6 @@ class DerivativePositionCollateralLimits(_Type):
 #endregion
 
 #region Type hinting for models which are not serializable
-
 @compose(dataclass, partial)
 class InvoiceSubmission(_Type):
     id: str
@@ -590,7 +589,7 @@ class InvoiceSubmission(_Type):
             for index, invoice in enumerate(data["invoices"]):
                 data["invoices"][index] = Invoice(**invoice)
 
-        return cls(**data)
+        return InvoiceSubmission(**data)
 
 @compose(dataclass, partial)
 class CustomerInfo(_Type):
@@ -614,4 +613,9 @@ class Invoice(_Type):
     address: str
     ext: JSON
 
+@dataclass
+class InvoiceCountStats(_Type):
+    time: str
+    count: float
+
 #endregion

examples/rest/merchant.py

@@ -28,3 +28,7 @@ print(bfx.rest.auth.submit_invoice(
     customer_info=customer_info,
     pay_currencies=["ETH"]
 ))
+
+print(bfx.rest.auth.get_invoices())
+
+print(bfx.rest.auth.get_invoice_count_stats(status="CREATED", format="Y"))