from core_shared import ServiceSettings


class KnowledgeServiceSettings(ServiceSettings):
    service_name: str = "knowledge-service"
    service_port: int = 8012
    database_url: str = "sqlite:///./knowledge_service.db"
    default_chunk_size: int = 800
    default_chunk_overlap: int = 120
    embedding_dimensions: int = 32
    embedding_model: str = "local-hash-v1"
    embedding_provider: str = "local"
    embedding_base_url: str | None = None
    embedding_api_key: str | None = None
    embedding_timeout_seconds: float = 30.0
    embedding_fallback_to_local: bool = True
    retrieval_keyword_weight: float = 0.55
    retrieval_vector_weight: float = 0.30
    retrieval_rerank_weight: float = 0.15
    retrieval_rerank_enabled: bool = True
    retrieval_candidate_multiplier: int = 5