From e652d7c72c606de99e52c2659a4d43c1a3ba8e9f Mon Sep 17 00:00:00 2001
From: Tiago vasconcelos <talvasconcelos@gmail.com>
Date: Wed, 8 Jun 2022 14:58:41 +0100
Subject: [PATCH] reserve fee added

---
 lnbits/config.py                              |  4 +-
 lnbits/extensions/admin/migrations.py         | 10 +++-
 lnbits/extensions/admin/models.py             |  6 +-
 .../admin/templates/admin/index.html          | 55 +++++++++++++++----
 lnbits/settings.py                            |  1 -
 5 files changed, 62 insertions(+), 14 deletions(-)

diff --git a/lnbits/config.py b/lnbits/config.py
index d07ca044e..37b700fde 100644
--- a/lnbits/config.py
+++ b/lnbits/config.py
@@ -3,7 +3,7 @@ import json
 from os import getenv, path
 from typing import List, Optional
 
-from pydantic import BaseSettings, Field, validator
+from pydantic import BaseSettings, Field
 
 wallets_module = importlib.import_module("lnbits.wallets")
 wallet_class = getattr(    
@@ -30,6 +30,8 @@ class Settings(BaseSettings):
     data_folder: str = Field(default=None, env="LNBITS_DATA_FOLDER")
     database_url: str = Field(default=None, env="LNBITS_DATABASE_URL")
     force_https: bool = Field(default=True, env="LNBITS_FORCE_HTTPS")
+    reserve_fee_min: int = Field(default=4000, env="LNBITS_RESERVE_FEE_MIN")
+    reserve_fee_pct: float = Field(default=1.0, env="LNBITS_RESERVE_FEE_PERCENT")
     service_fee: float = Field(default=0, env="LNBITS_SERVICE_FEE")
     hide_api: bool = Field(default=False, env="LNBITS_HIDE_API")
     denomination: str = Field(default="sats", env="LNBITS_DENOMINATION")
diff --git a/lnbits/extensions/admin/migrations.py b/lnbits/extensions/admin/migrations.py
index aad66f02a..f3663435c 100644
--- a/lnbits/extensions/admin/migrations.py
+++ b/lnbits/extensions/admin/migrations.py
@@ -32,6 +32,8 @@ async def m001_create_admin_table(db):
     data_folder = conf.data_folder
     database_url = conf.database_url
     force_https = conf.force_https
+    reserve_fee_min = conf.reserve_fee_min
+    reserve_fee_pct = conf.reserve_fee_pct
     service_fee = conf.service_fee
     hide_api = conf.hide_api
     denomination = conf.denomination
@@ -56,6 +58,8 @@ async def m001_create_admin_table(db):
             data_folder TEXT,
             database_url TEXT,
             force_https BOOLEAN,
+            reserve_fee_min INT,
+            reserve_fee_pct REAL,
             service_fee REAL,
             hide_api BOOLEAN,
             denomination TEXT,
@@ -81,6 +85,8 @@ async def m001_create_admin_table(db):
             data_folder,
             database_url,
             force_https,
+            reserve_fee_min,
+            reserve_fee_pct,
             service_fee,
             hide_api,
             denomination,
@@ -91,7 +97,7 @@ async def m001_create_admin_table(db):
             theme,
             custom_logo,
             ad_space)
-        VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
+        VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
         """,
         (
             user,
@@ -103,6 +109,8 @@ async def m001_create_admin_table(db):
             data_folder,
             database_url,
             force_https,
+            reserve_fee_min,
+            reserve_fee_pct,
             service_fee,
             hide_api,
             denomination,
diff --git a/lnbits/extensions/admin/models.py b/lnbits/extensions/admin/models.py
index 3b17e720c..3d8efdcd8 100644
--- a/lnbits/extensions/admin/models.py
+++ b/lnbits/extensions/admin/models.py
@@ -14,6 +14,8 @@ class UpdateAdminSettings(BaseModel):
     funding_source: str = Query(None)
     # ops
     force_https: bool = Query(None)
+    reserve_fee_min: int = Query(None, ge=0)
+    reserve_fee_pct: float = Query(None, ge=0)
     service_fee: float = Query(None, ge=0)
     hide_api: bool = Query(None)
     # Change theme
@@ -38,7 +40,9 @@ class Admin(BaseModel):
     data_folder: Optional[str]
     database_url: Optional[str]
     force_https: bool = Field(default=True)
-    service_fee: float = Field(default=0)
+    reserve_fee_min: Optional[int]
+    reserve_fee_pct: Optional[float]
+    service_fee: float = Optional[float]
     hide_api: bool = Field(default=False)
     # Change theme
     site_title: Optional[str]
diff --git a/lnbits/extensions/admin/templates/admin/index.html b/lnbits/extensions/admin/templates/admin/index.html
index d9790051e..832629bcf 100644
--- a/lnbits/extensions/admin/templates/admin/index.html
+++ b/lnbits/extensions/admin/templates/admin/index.html
@@ -51,16 +51,47 @@
                 </div>
                 <div class="row q-col-gutter-md">
                   <div class="col-12 col-md-6">
-                    <p>
-                      Active Funding<small> (Requires server restart)</small>
-                    </p>
-                    <q-select
-                      filled
-                      v-model="data.admin.funding_source"
-                      hint="Select the active funding wallet"
-                      :options="data.funding_source"
-                    ></q-select>
-                    <br />
+                    <div class="row">
+                      <div class="col-12">
+                        <p>
+                          Active Funding<small>
+                            (Requires server restart)</small
+                          >
+                        </p>
+                        <q-select
+                          filled
+                          v-model="data.admin.funding_source"
+                          hint="Select the active funding wallet"
+                          :options="data.funding_source"
+                        ></q-select>
+                        <br />
+                      </div>
+                      <div class="col-12">
+                        <p>Minimum wallet reserve</p>
+                        <div class="row q-col-gutter-md">
+                          <div class="col-6">
+                            <q-input
+                              dense
+                              type="number"
+                              filled
+                              v-model="data.admin.reserve_fee_min"
+                              label="Reserve fee in msats"
+                            ></q-input>
+                          </div>
+                          <div class="col-6">
+                            <q-input
+                              dense
+                              type="number"
+                              filled
+                              v-model="data.admin.reserve_fee_pct"
+                              label="Reserve fee in percentage"
+                              step="0.1"
+                            ></q-input>
+                          </div>
+                        </div>
+                        <br />
+                      </div>
+                    </div>
                   </div>
                   <div class="col-12 col-md-6">
                     <!-- <q-form @submit="topupWallet"> -->
@@ -1292,6 +1323,8 @@
           disabled_ext,
           funding_source,
           force_https,
+          reserve_fee_min,
+          reserve_fee_pct,
           service_fee,
           hide_api,
           site_title,
@@ -1311,6 +1344,8 @@
           disabled_ext: disabled_ext.toString(),
           funding_source,
           force_https,
+          reserve_fee_min,
+          reserve_fee_pct,
           service_fee,
           hide_api,
           site_title,
diff --git a/lnbits/settings.py b/lnbits/settings.py
index ed5c77f7e..8e5c321a2 100644
--- a/lnbits/settings.py
+++ b/lnbits/settings.py
@@ -1,6 +1,5 @@
 import importlib
 import subprocess
-from email.policy import default
 from os import path
 from typing import List