"""NoOpGuardrail — always-allow stub implementing the Guardrail interface (TASK-02-07).

SLICE-02 ships this stub so the Pipecat pipeline has the pluggable guardrail hook
in place from the first slice. SLICE-03 TASK-03-04 swaps in CustomerServiceGuardrail
with no pipeline change (D-019). The disclaimer text is defined here (matches the
RESEARCH.md safety baseline) so the pipeline can play it as the first AI utterance
even before the real ruleset lands.
"""

from __future__ import annotations

from server.services.base import Guardrail, GuardrailContext, GuardrailVerdict

# The session-start disclaimer (RESEARCH.md §Safety). Played as the first AI
# utterance of every session. Defined here so it exists from SLICE-02.
DISCLAIMER_TEXT = (
    "This is an AI practice session for training purposes. "
    "It is not a real conversation and no real company is involved."
)


class NoOpGuardrail(Guardrail):
    """Always-allow stub (SLICE-02 placeholder for the Guardrail slot)."""

    name = "noop"

    async def check(
        self, text: str, context: GuardrailContext | None = None
    ) -> GuardrailVerdict:
        return GuardrailVerdict(allowed=True, reason="noop guardrail — all allowed", category="ok")

    @property
    def session_start_disclaimer(self) -> str:
        return DISCLAIMER_TEXT


__all__ = ["NoOpGuardrail", "DISCLAIMER_TEXT"]