Initial commit: Gold Trading Simulator with AI-powered analysis

backend/app/services/settings.py

@@ -0,0 +1,45 @@
+from __future__ import annotations
+
+from typing import Any, Dict
+
+from app.config import settings
+
+
+_state: Dict[str, Any] = {
+    "models": {
+        "default_model": settings.OPENROUTER_MODEL,
+        "temperature": 0.3,
+        "max_tokens": 800,
+    },
+    "exchanges": {
+        "binance": {"enabled": True},
+        "alpha_vantage": {
+            "enabled": True,
+            "has_api_key": bool(settings.ALPHA_VANTAGE_API_KEY),
+        },
+    },
+}
+
+
+def get_models() -> Dict[str, Any]:
+    return dict(_state["models"])  # shallow copy
+
+
+def update_models(patch: Dict[str, Any]) -> Dict[str, Any]:
+    allowed = {"default_model", "temperature", "max_tokens"}
+    for k, v in patch.items():
+        if k in allowed:
+            _state["models"][k] = v
+    return get_models()
+
+
+def get_exchanges() -> Dict[str, Any]:
+    return dict(_state["exchanges"])  # shallow copy
+
+
+def update_exchanges(patch: Dict[str, Any]) -> Dict[str, Any]:
+    # Shallow merge per top-level key
+    for k, v in patch.items():
+        if k in _state["exchanges"] and isinstance(v, dict):
+            _state["exchanges"][k].update(v)
+    return get_exchanges()