add error handler

truthinquiry/__init__.py

@@ -10,7 +10,7 @@ from truthinquiry.ext.database import db
 from truthinquiry.ext.socketio import socket_io
 from truthinquiry.ext.discord_bot import discord_bot
 
-from truthinquiry.routes import routes_api, routes_ui, routes_socketio
+from truthinquiry.routes import routes_api, routes_ui, routes_socketio, handlers
 
 def register_extensions(app):
     db.init_app(app)
@@ -31,4 +31,6 @@ def create_app():
     
     register_routes(app)
 
+    handlers.register_handlers(app)
+
     return app

truthinquiry/routes/handlers.py

@@ -0,0 +1,12 @@
+
+import flask
+from werkzeug.exceptions import HTTPException
+
+def http_error_handler(e):
+    return flask.render_template(
+        "errorhandler.html",
+        desc=e.description,
+        url=f"https://http.cat/{e.code}"), e.code
+
+def register_handlers(app):
+    app.errorhandler(HTTPException)(http_error_handler)

truthinquiry/templates/errorhandler.html

@@ -0,0 +1,2 @@
+<img src="{{url}}">
+<p> {{desc}} </p>