Merge pull request #43 from FelixFrei/feature-36-new-function-to-pay-LNURLP

Feature #36 new function to get bolt11 from lnurlp

Author: bitkarrot

pylnbits/user_wallet.py

@@ -2,6 +2,7 @@
 import logging
 
 from aiohttp.client import ClientSession
+from lnurl import Lnurl
 
 from pylnbits.utils import get_url, post_url
 
@@ -242,6 +243,47 @@ def get_payurl(self, email: str):
         except Exception as e:
             print("Exception, possibly malformed LN Address: " + str(e))
 
+    # generates bolt11 invoice from payurl and amount to pay
+    async def get_bolt11_from_payurl(self, purl: str, amount: int):
+        json_content = await get_url(self._session, path=purl, headers=self._invoice_headers)
+        lnurlpay = json_content["callback"]
+
+        millisats = amount * 1000
+        payquery = lnurlpay + "?amount=" + str(millisats)
+
+        # get bech32-serialized lightning invoice
+        pr_dict = await get_url(self._session, path=payquery, headers=self._invoice_headers)
+        # check keys returned for status
+        if "status" in pr_dict:
+            reason = pr_dict["reason"]
+            return reason
+        elif "pr" in pr_dict:
+            bolt11 = pr_dict["pr"]
+            return bolt11
+
+
+
+    # from LNURLPay link
+    async def get_bolt11_from_lnurlp(self, lnurlp_string: str, amount: int):
+        """
+        fail state
+        {'reason': 'Amount not between min_sendable and max_sendable', 'status': 'ERROR'}
+
+        success state
+        {'pr': 'lnbc1......azgfe0',
+        'routes': [], 'successAction': {'description': 'Thanks love for the lightning!',
+        'tag': 'url', 'url': 'https:/.......'}}
+        """
+        try:
+            lnurl = Lnurl(lnurlp_string)
+            purl = lnurl.url
+            return await self.get_bolt11_from_payurl(purl, amount)
+
+        except Exception as e:
+            print("Exception as: ", str(e))
+            return e
+
+
     # from lnaddress
     async def get_bolt11(self, email: str, amount: int):
         """
@@ -255,25 +297,8 @@ async def get_bolt11(self, email: str, amount: int):
         """
         try:
             purl = self.get_payurl(email)
-            json_content = await get_url(self._session, path=purl, headers=self._invoice_headers)
-            # res =  requests.get(purl)
-            lnurlpay = json_content["callback"]
-
-            millisats = amount * 1000
-            payquery = lnurlpay + "?amount=" + str(millisats)
-
-            # get bech32-serialized lightning invoice
-            # pr_dict =  requests.get(payquery)
-            pr_dict = await get_url(self._session, path=payquery, headers=self._invoice_headers)
-            # check keys returned for status
-            if "status" in pr_dict:
-                reason = pr_dict["reason"]
-                return reason
-            elif "pr" in pr_dict:
-                bolt11 = pr_dict["pr"]
-                return bolt11
+            return await self.get_bolt11_from_payurl(purl, amount)
+
         except Exception as e:
             print("Exception as: ", str(e))
-            return e
-
-# get lnbits pay_id from lightning address if its a lnpayurl
+            return e

requirements.txt

@@ -5,5 +5,6 @@ mkdocs==1.5.2
 mkdocs-autorefs==0.5.0
 mkdocs-material==9.2.8
 mkdocs-material-extensions==1.1.1
+lnurl==0.4.0
 mkdocstrings==0.23.0
-mkdocstrings-python==1.6.2
+mkdocstrings-python==1.6.2