refactor: code review

lnbits/__init__.py

@@ -282,7 +282,7 @@ def api_transactions():
 
         # insert the payment
         db.execute(
-            "INSERT INTO apipayments (payhash, amount, fee, wallet, pending, memo) VALUES (?, ?, ?, ?, 1, ?)",
+            "INSERT OR IGNORE INTO apipayments (payhash, amount, fee, wallet, pending, memo) VALUES (?, ?, ?, ?, 1, ?)",
             (
                 invoice.payment_hash,
                 -int(invoice.amount_msat),
@@ -305,26 +305,14 @@ def api_transactions():
         else:
             # actually send the payment
             r = WALLET.pay_invoice(data["payment_request"])
-            print(r)
 
-            if not r.raw_response:
+            if not r.raw_response.ok or r.failed:
                 return jsonify({"ERROR": "UNEXPECTED PAYMENT ERROR"}), 500
 
-            data = r.raw_response.json()
-
-            print(data)
-
-        
-            if r.raw_response and "error" in data:
-                # payment didn't went through, delete it here
-                # (these guarantees specific to lntxbot)
-                db.execute("DELETE FROM apipayments WHERE payhash = ?", (invoice.payment_hash,))
-                return jsonify({"PAID": "FALSE"}), 200
-
             # payment went through, not pending anymore, save actual fees
             db.execute(
                 "UPDATE apipayments SET pending = 0, fee = ? WHERE payhash = ? AND wallet = ?",
-                (invoice.amount_msat, invoice.payment_hash, wallet["id"]),
+                (r.fee_msat, invoice.payment_hash, wallet["id"]),
             )
 
     return jsonify({"PAID": "TRUE", "payment_hash": invoice.payment_hash}), 200

lnbits/wallets/base.py

@@ -9,12 +9,15 @@ class InvoiceResponse(NamedTuple):
     payment_request: Optional[str] = None
 
 
-class TxStatus(NamedTuple):
+class PaymentResponse(NamedTuple):
     raw_response: Response
-    settled: Optional[bool] = None
+    failed: bool = False
+    fee_msat: int = 0
 
-class PaymentResponse(NamedTuple):
+
+class TxStatus(NamedTuple):
     raw_response: Response
+    settled: Optional[bool] = None
 
 
 class Wallet(ABC):

lnbits/wallets/lnd.py

@@ -1,7 +1,5 @@
-from requests import Response, get, post
-from flask import jsonify
-from .base import InvoiceResponse, TxStatus, Wallet, PaymentResponse
-import json
+from requests import get, post
+from .base import InvoiceResponse, PaymentResponse, TxStatus, Wallet
 
 
 class LndWallet(Wallet):
@@ -26,28 +24,23 @@ class LndWallet(Wallet):
             payment_request = data["payment_request"]
 
         rr = get(url=f"{self.endpoint}/v1/payreq/{payment_request}", headers=self.auth_read)
-        print(rr.json())
+
         if rr.ok:
             dataa = rr.json()
             payment_hash = dataa["payment_hash"]
 
-
         return InvoiceResponse(r, payment_hash, payment_request)
 
-
-
     def pay_invoice(self, bolt11: str) -> PaymentResponse:
-        fee_msat = None
-        r = post(url=f"{self.endpoint}/v1/channels/transactions", headers=self.auth_admin, json={"payment_request": bolt11})
-        return PaymentResponse(r)
-
-
+        r = post(
+            url=f"{self.endpoint}/v1/channels/transactions", headers=self.auth_admin, json={"payment_request": bolt11}
+        )
+        return PaymentResponse(r, not r.ok)
 
     def get_invoice_status(self, payment_hash: str, wait: bool = True) -> TxStatus:
         r = get(url=f"{self.endpoint}/v1/invoice/{payment_hash}", headers=self.auth_read)
-    #    print(payment_hash)
-        print(r.json())
-        if not r.ok:
+
+        if not r.ok or "settled" not in r.json():
             return TxStatus(r, None)
 
         return TxStatus(r, r.json()["settled"])
@@ -64,5 +57,3 @@ class LndWallet(Wallet):
         # check payment.status: https://api.lightning.community/rest/index.html?python#peersynctype
         statuses = {"UNKNOWN": None, "IN_FLIGHT": None, "SUCCEEDED": True, "FAILED": False}
         return TxStatus(r, statuses[payment["status"]] if payment else None)
-
-

lnbits/wallets/lntxbot.py

@@ -1,7 +1,6 @@
-from requests import Response, get, post
-from flask import jsonify
-from .base import InvoiceResponse, TxStatus, Wallet, PaymentResponse
-import json
+from requests import post
+
+from .base import InvoiceResponse, PaymentResponse, TxStatus, Wallet
 
 
 class LntxbotWallet(Wallet):
@@ -23,11 +22,17 @@ class LntxbotWallet(Wallet):
         return InvoiceResponse(r, payment_hash, payment_request)
 
     def pay_invoice(self, bolt11: str) -> PaymentResponse:
-        fee_msat = None
         r = post(url=f"{self.endpoint}/payinvoice", headers=self.auth_admin, json={"invoice": bolt11})
-        return PaymentResponse(r)
+        failed, fee_msat = not r.ok, 0
 
+        if r.ok:
+            data = r.json()
+            if "error" in data and data["error"]:
+                failed = True
+            elif "fee_msat" in data:
+                fee_msat = data["fee_msat"]
 
+        return PaymentResponse(r, failed, fee_msat)
 
     def get_invoice_status(self, payment_hash: str, wait: bool = True) -> TxStatus:
         wait = "true" if wait else "false"
@@ -42,7 +47,6 @@ class LntxbotWallet(Wallet):
 
         return TxStatus(r, True)
 
-
     def get_payment_status(self, payment_hash: str) -> TxStatus:
         r = post(url=f"{self.endpoint}/paymentstatus/{payment_hash}", headers=self.auth_invoice)
         data = r.json()
@@ -51,5 +55,3 @@ class LntxbotWallet(Wallet):
             return TxStatus(r, None)
 
         return TxStatus(r, {"complete": True, "failed": False, "unknown": None}[data.get("status", "unknown")])
-
-        

lnbits/wallets/opennode.py

@@ -1,7 +1,7 @@
-from requests import Response, get, post
-from flask import jsonify
-from .base import InvoiceResponse, TxStatus, Wallet, PaymentResponse
-import json
+from requests import get, post
+
+from .base import InvoiceResponse, PaymentResponse, TxStatus, Wallet
+
 
 class OpenNodeWallet(Wallet):
     """https://api.lightning.community/rest/index.html#lnd-rest-api-reference"""
@@ -20,33 +20,24 @@ class OpenNodeWallet(Wallet):
         )
         if r.ok:
             data = r.json()
-            payment_hash, payment_request = data['data']['id'], data["data"]["lightning_invoice"]["payreq"]
+            payment_hash, payment_request = data["data"]["id"], data["data"]["lightning_invoice"]["payreq"]
 
         return InvoiceResponse(r, payment_hash, payment_request)
 
     def pay_invoice(self, bolt11: str) -> PaymentResponse:
-
         r = post(url=f"{self.endpoint}/v2/withdrawals", headers=self.auth_admin, json={"type": "ln", "address": bolt11})
-
-        return PaymentResponse(r)
-
+        return PaymentResponse(r, not r.ok)
 
     def get_invoice_status(self, payment_hash: str) -> TxStatus:
-
         r = get(url=f"{self.endpoint}/v1/charge/{payment_hash}", headers=self.auth_invoice)
 
-        data = r.json()
-        print(data)
-        print(f"{self.endpoint}/v1/charge/{payment_hash} {self.auth_invoice}")
         if not r.ok:
             return TxStatus(r, None)
 
-        
         statuses = {"processing": None, "paid": True, "unpaid": False}
         return TxStatus(r, statuses[r.json()["data"]["status"]])
 
     def get_payment_status(self, payment_hash: str) -> TxStatus:
-
         r = get(url=f"{self.endpoint}/v1/withdrawal/{payment_hash}", headers=self.auth_admin)
 
         if not r.ok:
@@ -54,6 +45,3 @@ class OpenNodeWallet(Wallet):
 
         statuses = {"pending": None, "confirmed": True, "error": False, "failed": False}
         return TxStatus(r, statuses[r.json()["data"]["status"]])
-       
-
-