class IntentService:
    def detect_intent(self, message: str) -> str:
        m = message.lower()
        if any(x in m for x in ["modo advogado", "modo corporativo", "apenas conversar", "só conversar"]):
            return "set_mode"
        if any(x in m for x in ["petição", "parecer", "contrato", "relatório", "recurso"]):
            return "document"
        if any(x in m for x in ["pesquise", "jurisprudência", "notícia", "norma", "stj", "stf", "anvisa", "cvm"]):
            return "search"
        if any(x in m for x in ["monitore", "me avise", "alerta"]):
            return "monitoring"
        return "chat"

    def extract_mode(self, message: str) -> str:
        m = message.lower()
        if "advogado" in m:
            return "advogado"
        if "corporativo" in m:
            return "corporativo"
        return "conversar"