rewritten after codex recommendations

flowers.py

@@ -1,16 +1,27 @@
+"""Flowers application factory."""
+
 from flask import Flask
-from flower_vase import flower_bp
+
+from Config import COOKIE_SECURE, DEBUG, SECRET_KEY
+from flower_vase import CredentialStore, flower_bp
 
 
-def create_app():
+def create_app(test_config: dict | None = None) -> Flask:
     app = Flask(__name__)
-    app.config["SECRET_KEY"] = 'adhf adsh 8347y92347rupqo;wjf cowuyergc9b24387ryx1 -923pqr pqwejf qy7i34'
+    app.config.from_mapping(
+        SECRET_KEY=SECRET_KEY,
+        SESSION_COOKIE_HTTPONLY=True,
+        SESSION_COOKIE_SAMESITE="Lax",
+        SESSION_COOKIE_SECURE=COOKIE_SECURE,
+        MAX_CONTENT_LENGTH=64 * 1024,
+    )
+    if test_config:
+        app.config.update(test_config)
+
+    app.extensions["credential_store"] = CredentialStore()
     app.register_blueprint(flower_bp)
     return app
 
 
-if __name__ == '__main__':
-    my_app = create_app()
-    # if needed  - initialize data
-    my_app.run(debug=True, host='127.0.0.1', port=5012)
-
+if __name__ == "__main__":
+    create_app().run(debug=DEBUG, host="127.0.0.1", port=5012)