define BTCPAY_ENABLED based on URL and btcpay key, pass it explicitly

capsulflask/__init__.py

@@ -71,7 +71,7 @@ app.config.from_mapping(
   #STRIPE_WEBHOOK_SECRET=os.environ.get("STRIPE_WEBHOOK_SECRET", default="")
 
   BTCPAY_PRIVATE_KEY=os.environ.get("BTCPAY_PRIVATE_KEY", default="").replace("\\n", "\n"),
-  BTCPAY_URL=os.environ.get("BTCPAY_URL", default="https://btcpay.cyberia.club")
+  BTCPAY_URL=os.environ.get("BTCPAY_URL", default="")
 )
 
 app.config['HUB_URL'] = os.environ.get("HUB_URL", default=app.config['BASE_URL'])
@@ -139,10 +139,13 @@ else:
 
 app.config['HTTP_CLIENT'] = MyHTTPClient(timeout_seconds=int(app.config['INTERNAL_HTTP_TIMEOUT_SECONDS']))
 
-try:
-  app.config['BTCPAY_CLIENT'] = btcpay.Client(api_uri=app.config['BTCPAY_URL'], pem=app.config['BTCPAY_PRIVATE_KEY'])
-except:
-  app.logger.warning("unable to create btcpay client. Capsul will work fine except cryptocurrency payments will not work. The error was: " + my_exec_info_message(sys.exc_info()))
+app.config['BTCPAY_ENABLED'] = False
+if app.config['BTCPAY_URL'] is not "":
+  try:
+    app.config['BTCPAY_CLIENT'] = btcpay.Client(api_uri=app.config['BTCPAY_URL'], pem=app.config['BTCPAY_PRIVATE_KEY'])
+    app.config['BTCPAY_ENABLED'] = True
+  except:
+    app.logger.warning("unable to create btcpay client. Capsul will work fine except cryptocurrency payments will not work. The error was: " + my_exec_info_message(sys.exc_info()))
 
 # only start the scheduler and attempt to migrate the database if we are running the app.
 # otherwise we are running a CLI command.
@@ -218,10 +221,6 @@ def override_url_for():
   return dict(url_for=url_for_with_cache_bust)
 
 
-@app.context_processor
-def load_config_vars():
-  return dict(config=app.config)
-
 def url_for_with_cache_bust(endpoint, **values):
   """
   Add a query parameter based on the hash of the file, this acts as a cache bust

capsulflask/console.py

@@ -423,6 +423,7 @@ def account_balance():
     has_vms=len(vms_billed)>0, 
     vms_billed=vms_billed,
     warning_text=warning_text,
+    btcpay_enabled=current_app.config["BTCPAY_ENABLED"],
     payments=list(map(
       lambda x: dict(
         dollars=x["dollars"], 

capsulflask/payment.py

@@ -48,7 +48,7 @@ def validate_dollars():
 def btcpay_payment():
   errors = list()
 
-  if current_app.config['BTCPAY_PRIVATE_KEY'] == "":
+  if not current_app.config['BTCPAY_ENABLED']:
     flash("BTCPay is not enabled on this server")
     return redirect(url_for("console.account_balance"))
 

capsulflask/templates/account-balance.html

@@ -46,7 +46,7 @@
             <a href="/payment/stripe">Add funds with Credit/Debit (stripe)</a>
             <ul><li>notice: stripe will load nonfree javascript </li></ul>
           </li>
-          {% if config['BTCPAY_PRIVATE_KEY'] != "" %}
+          {% if btcpay_enabled %}
           <li><a href="/payment/btcpay">Add funds with Bitcoin/Litecoin/Monero (btcpay)</a></li>
           {% endif %}