class ComplexityRouter:
    def __init__(self, tools: list[FunctionTool]):
        self.tools = tools

    def route(self, query: str) -> list[FunctionTool]:
        # Heuristique simple : route selon mots-clés
        if any(word in query.lower() for word in ["moyenne", "écart", "tendance"]):
            return [t for t in self.tools if getattr(t, "complexity", None) == "tool"]
        elif any(word in query.lower() for word in ["tva", "prix", "ht", "ttc"]):
            return [t for t in self.tools if getattr(t, "complexity", None) == "simple"]
        elif any(word in query.lower() for word in ["croiser", "relier", "jointure"]):
            return [t for t in self.tools if getattr(t, "complexity", None) == "react"]
        else:
            # Fallback : tout proposer
            return self.tools