/** Offline public-benchmark oracle; never passed to production question selection. */
import { directionFor, type ProbeDirectionContext } from "../src/lib/rectification-agentic/core/apply-probe-outcome.ts";
import type { AnswerClass, ConflictProbe } from "../src/lib/rectification-agentic/core/types.ts";

export function segmentReplayOracleAnswer(
  probe: ConflictProbe,
  truthMinute: string,
  transitions?: ProbeDirectionContext["transitions"],
): AnswerClass {
  if (probe.choice_kind === "varga_style" || probe.source === "nakshatra_boundary") {
    // Style choices retain their real answer class and reference-only scoring.
    return probe.expected_outcomes.find(outcome => outcome.answer_class !== "unsure"
      && directionFor(truthMinute, outcome, probe.choice_kind, { probe, transitions }) === "support")?.answer_class ?? "unsure";
  }
  // Same yes/weak union and continuous-minute inheritance as research
  // optimal_answer -> true_side. A missing representative is not itself unsure.
  const yes = [...new Set(probe.expected_outcomes
    .filter(outcome => outcome.answer_class === "yes" || outcome.answer_class === "weak_yes")
    .flatMap(outcome => outcome.supports))];
  const no = [...new Set(probe.expected_outcomes.filter(outcome => outcome.answer_class === "no")
    .flatMap(outcome => outcome.supports))];
  const direction = directionFor(truthMinute, { answer_class: "yes", supports: yes, conflicts: no },
    probe.choice_kind, { probe, transitions });
  return direction === "support" ? "yes" : direction === "conflict" ? "no" : "unsure";
}