From 5f6585eb4544752e60c86e4419a531e11632a9e5 Mon Sep 17 00:00:00 2001
From: fiatjaf <fiatjaf@gmail.com>
Date: Wed, 18 Dec 2019 13:44:58 +0000
Subject: [PATCH] fee reserve defaults to 0.

---
 .env.example       | 2 ++
 lnbits/__init__.py | 8 ++++----
 lnbits/settings.py | 2 ++
 3 files changed, 8 insertions(+), 4 deletions(-)

diff --git a/.env.example b/.env.example
index e84d2ec..704eeb8 100644
--- a/.env.example
+++ b/.env.example
@@ -4,3 +4,5 @@ FLASK_ENV=development
 LNTXBOT_API_ENDPOINT=https://lntxbot.bigsun.xyz/
 LNTXBOT_ADMIN_KEY=LNTXBOT_ADMIN_KEY
 LNTXBOT_INVOICE_KEY=LNTXBOT_INVOICE_KEY
+
+FEE_RESERVE=0.01
diff --git a/lnbits/__init__.py b/lnbits/__init__.py
index 65fdded..879e240 100644
--- a/lnbits/__init__.py
+++ b/lnbits/__init__.py
@@ -9,7 +9,7 @@ from lnurl import Lnurl, LnurlWithdrawResponse
 from . import bolt11
 from .db import Database
 from .helpers import megajson
-from .settings import LNBITS_PATH, WALLET, DEFAULT_USER_WALLET_NAME
+from .settings import LNBITS_PATH, WALLET, DEFAULT_USER_WALLET_NAME, FEE_RESERVE
 
 
 app = Flask(__name__)
@@ -187,12 +187,12 @@ def wallet():
             coalesce(
               (SELECT balance/1000 FROM balances WHERE wallet = wallets.id),
               0
-            ) AS balance,
+            ) * ? AS balance,
             *
           FROM wallets
           WHERE user = ? AND id = ?
         """,
-            (usr, wallet_id),
+            (FEE_RESERVE, usr, wallet_id),
         )
 
         transactions = db.fetchall("SELECT * FROM apipayments WHERE wallet = ? AND pending = 0", (wallet_id,))
@@ -275,7 +275,7 @@ def api_transactions():
             (
                 invoice.payment_hash,
                 -int(invoice.amount_msat),
-                -int(invoice.amount_msat * 0.01),
+                -int(invoice.amount_msat) * FEE_RESERVE,
                 wallet["id"],
                 invoice.description,
             ),
diff --git a/lnbits/settings.py b/lnbits/settings.py
index 6ac1a23..f714a86 100644
--- a/lnbits/settings.py
+++ b/lnbits/settings.py
@@ -15,3 +15,5 @@ WALLET = LntxbotWallet(
 LNBITS_PATH = os.path.dirname(os.path.realpath(__file__))
 DATABASE_PATH = os.getenv("DATABASE_PATH") or os.path.join(LNBITS_PATH, "data", "database.sqlite3")
 DEFAULT_USER_WALLET_NAME = os.getenv("DEFAULT_USER_WALLET_NAME") or "Bitcoin LN Wallet"
+
+FEE_RESERVE = float(os.getenv("FEE_RESERVE") or 0)