"""Crisis path of the dialog (guardrail #2): fixed texts only, never generated by the LLM.

Decisions:
  * The crisis script (`app.core.safety.crisis_reply`, `config/texts/crisis.yaml`) is sent verbatim, once per
    open crisis. "Open" = `data["crisis"]["open"]` — set when the crisis starts, cleared only by the doctor's
    acknowledgement (`doctor_ack`), so a patient repeating the phrase does not get the same long script again:
    they get a short fixed "я рядом, врач уже уведомлён" + emergency resources instead.
  * Entering the crisis drops unfinished scale sessions (their answered items are already stored item by item):
    nothing else is asked while the patient is in crisis, except the C-SSRS screen.
  * Without valid consent (before consent, after refusal/revocation, minors) we still answer a crisis message —
    protecting life is the one processing ground that does not need consent (152-FZ art. 10 p. 2.3) — but with
    a variant WITHOUT "your doctor has been notified", because no doctor is notified, and nothing is stored.
"""

from typing import Any

from app.core.safety import CrisisResource, CrisisScript, crisis_reply
from app.dialog.contracts import Reply
from app.dialog.fsm import Ctx, Step


def crisis_open(data: dict[str, Any]) -> bool:
    return bool((data.get("crisis") or {}).get("open"))


def _resource_lines(resources: list[CrisisResource]) -> list[str]:
    return [f"• {r.name}: {r.phone}" + (f" ({r.note})" if r.note else "") for r in resources]


def open_crisis(ctx: Ctx, categories: list[str], source: str) -> Step:
    """Start the crisis (full script) or, if one is already open, send the short repeat text.

    `source` is a code for the dashboard/audit trail: "safety:lexicon", "safety:llm", "scale:phq9", "rule:<id>".
    """
    script = crisis_reply(categories)
    if crisis_open(ctx.data):
        text = "\n".join([ctx.texts.crisis.repeat, *_resource_lines(script.resources)])
        return Step(replies=[Reply(text=text, kind="crisis")])
    crisis = {"open": True, "opened_at": ctx.now.isoformat(), "source": source, "variant": script.variant}
    return Step(
        replies=[Reply(text=script.text, kind="crisis")],
        next_state="crisis",
        data={"crisis": crisis, "scales": None},
    )


def no_consent_crisis_text(script: CrisisScript) -> str:
    """Crisis script without the "doctor notified" line — for people we may not (or did not) notify about."""
    return "\n".join([script.body, "", *_resource_lines(script.resources), "", script.grounding])