import httpx

from core_domain import KnowledgeSearchRequestContract, KnowledgeSearchResultContract


class KnowledgeServiceClientError(Exception):
    pass


class KnowledgeServiceClient:
    def __init__(self, base_url: str, timeout_seconds: float = 10.0) -> None:
        self.base_url = base_url.rstrip("/")
        self.timeout_seconds = timeout_seconds

    def search(
        self,
        payload: KnowledgeSearchRequestContract,
    ) -> list[KnowledgeSearchResultContract]:
        try:
            with httpx.Client(timeout=self.timeout_seconds) as client:
                response = client.post(
                    f"{self.base_url}/knowledge/search",
                    json=payload.model_dump(mode="json"),
                )
                response.raise_for_status()
                return [
                    KnowledgeSearchResultContract.model_validate(item)
                    for item in response.json()
                ]
        except httpx.HTTPError as exc:
            raise KnowledgeServiceClientError(
                f"knowledge-service search failed: {exc}"
            ) from exc