From b1c92a067dc6539b299af14e080b10e0bfa196ef Mon Sep 17 00:00:00 2001
From: Vlad Stan <stan.v.vlad@gmail.com>
Date: Mon, 6 Oct 2025 10:29:09 +0300
Subject: [PATCH] [fix] add lnurl field back (#105)

---
 helpers.py   | 13 +++++++++++++
 models.py    | 10 ++++++++++
 views_api.py | 13 ++++++++++---
 3 files changed, 33 insertions(+), 3 deletions(-)

diff --git a/helpers.py b/helpers.py
index f4b3d89..ecc45f1 100644
--- a/helpers.py
+++ b/helpers.py
@@ -1,3 +1,6 @@
+from fastapi import Request
+from lnurl import encode as lnurl_encode
+
 from .nostr.key import PrivateKey
 
 
@@ -6,3 +9,13 @@ def parse_nostr_private_key(key: str) -> PrivateKey:
         return PrivateKey.from_nsec(key)
     else:
         return PrivateKey(bytes.fromhex(key))
+
+
+def lnurl_encode_link_id(req: Request, link_id: str) -> str:
+    url = req.url_for("lnurlp.api_lnurl_response", link_id=link_id)
+    url = url.replace(path=url.path)
+    url_str = str(url)
+    if url.netloc.endswith(".onion"):
+        # change url string scheme to http
+        url_str = url_str.replace("https://", "http://")
+    return str(lnurl_encode(url_str).bech32)
diff --git a/models.py b/models.py
index e6b6cfa..d8e6d6d 100644
--- a/models.py
+++ b/models.py
@@ -48,6 +48,16 @@ class PayLink(BaseModel):
     comment_chars: int
     created_at: datetime = Field(default_factory=lambda: datetime.now(timezone.utc))
     updated_at: datetime = Field(default_factory=lambda: datetime.now(timezone.utc))
+    lnurl: str | None = Field(
+        default=None,
+        no_database=True,
+        deprecated=True,
+        description=(
+            "Deprecated: Instead of using this bech32 encoded string, dynamically "
+            "generate your own static link (lud17/bech32) on the client side. "
+            "Example: lnurlp://${window.location.hostname}/lnurlp/${paylink_id}"
+        ),
+    )
     username: str | None = None
     zaps: bool | None = None
     webhook_url: str | None = None
diff --git a/views_api.py b/views_api.py
index 98d2118..6d9bb86 100644
--- a/views_api.py
+++ b/views_api.py
@@ -2,7 +2,7 @@ import json
 import re
 from http import HTTPStatus
 
-from fastapi import APIRouter, Depends, HTTPException, Query
+from fastapi import APIRouter, Depends, HTTPException, Query, Request
 from lnbits.core.crud import get_user, get_wallet
 from lnbits.core.models import SimpleStatus, WalletTypeInfo
 from lnbits.decorators import (
@@ -22,7 +22,7 @@ from .crud import (
     update_lnurlp_settings,
     update_pay_link,
 )
-from .helpers import parse_nostr_private_key
+from .helpers import lnurl_encode_link_id, parse_nostr_private_key
 from .models import CreatePayLinkData, LnurlpSettings, PayLink
 
 lnurlp_api_router = APIRouter()
@@ -30,6 +30,7 @@ lnurlp_api_router = APIRouter()
 
 @lnurlp_api_router.get("/api/v1/links", status_code=HTTPStatus.OK)
 async def api_links(
+    req: Request,
     key_info: WalletTypeInfo = Depends(require_invoice_key),
     all_wallets: bool = Query(False),
 ) -> list[PayLink]:
@@ -39,12 +40,14 @@ async def api_links(
         wallet_ids = user.wallet_ids if user else []
 
     links = await get_pay_links(wallet_ids)
+    for link in links:
+        link.lnurl = lnurl_encode_link_id(req=req, link_id=link.id)
     return links
 
 
 @lnurlp_api_router.get("/api/v1/links/{link_id}", status_code=HTTPStatus.OK)
 async def api_link_retrieve(
-    link_id: str, key_info: WalletTypeInfo = Depends(require_invoice_key)
+    req: Request, link_id: str, key_info: WalletTypeInfo = Depends(require_invoice_key)
 ) -> PayLink:
     link = await get_pay_link(link_id)
 
@@ -62,6 +65,8 @@ async def api_link_retrieve(
         raise HTTPException(
             detail="Not your pay link.", status_code=HTTPStatus.FORBIDDEN
         )
+
+    link.lnurl = lnurl_encode_link_id(req, link.id)
     return link
 
 
@@ -77,6 +82,7 @@ async def check_username_exists(username: str):
 @lnurlp_api_router.post("/api/v1/links", status_code=HTTPStatus.CREATED)
 @lnurlp_api_router.put("/api/v1/links/{link_id}", status_code=HTTPStatus.OK)
 async def api_link_create_or_update(
+    req: Request,
     data: CreatePayLinkData,
     link_id: str | None = None,
     key_info: WalletTypeInfo = Depends(require_admin_key),
@@ -172,6 +178,7 @@ async def api_link_create_or_update(
 
         link = await create_pay_link(data)
 
+    link.lnurl = lnurl_encode_link_id(req, link.id)
     return link