init flask-socketio + put app in a custom class

truthseeker/__init__.py

@@ -2,27 +2,34 @@ import flask
 import os
 
 from truthseeker.routes import routes_api, routes_ui
+from flask_socketio import SocketIO
 
+class TruthSeekerApp(flask.Flask):
 
-app = flask.Flask("truthseeker")
+    def __init__(self):
+        super().__init__("truthseeker")
+        self.set_app_secret()
+        self.socketio_app = SocketIO(self)
 
-def set_secret(app):
-    if os.path.isfile("instance/secret.txt"):
-        f = open("instance/secret.txt", "r")
-        app.config["SECRET_KEY"] = f.read()
-        f.close()
-        print("Read secret from secret.txt !")
-    else:
-        import secrets
-        app.config["SECRET_KEY"] = secrets.token_hex()
-        os.makedirs("instance", exist_ok=True)
-        f = open("instance/secret.txt", "w")
-        f.write(app.config["SECRET_KEY"])
-        f.close()
-        print("Generated secret and wrote to secret.txt !")
+    def run_app(self):
+        self.socketio_app.run(self)
 
-set_secret(app)
+    def set_app_secret(self):
+        if os.path.isfile("instance/secret.txt"):
+            f = open("instance/secret.txt", "r")
+            self.config["SECRET_KEY"] = f.read()
+            f.close()
+            print("Read secret from secret.txt !")
+        else:
+            import secrets
+            self.config["SECRET_KEY"] = secrets.token_hex()
+            os.makedirs("instance", exist_ok=True)
+            f = open("instance/secret.txt", "w")
+            f.write(self.config["SECRET_KEY"])
+            f.close()
+            print("Generated secret and wrote to secret.txt !")
 
+app = TruthSeekerApp()
 
 app.register_blueprint(routes_api.routes_api, url_prefix="/api/v1")
 app.register_blueprint(routes_ui.routes_ui, url_prefix="/")