import type { RectificationDecision } from "../core/rectification-decision.ts";

export type RectificationLabel =
  | "blocked"
  | "user_history_verification_required"
  | "manual_pattern_consensus"
  | "single_adapter_support"
  | "multi_adapter_consensus";

export function rectificationLabel(input: {
  decision: Pick<RectificationDecision, "separation" | "nextAction" | "stopReason">;
  supportedAdapterCount?: number;
}): RectificationLabel {
  if (input.decision.stopReason === "insufficient_dated_events"
    || input.decision.stopReason === "insufficient_domains") {
    return "user_history_verification_required";
  }
  if (input.decision.stopReason === "tied_first"
    || input.decision.stopReason === "user_uncertainty_too_high") {
    return "blocked";
  }
  if (input.decision.nextAction === "ask_fact_collection" && input.decision.separation.ranked.length === 0) {
    return "blocked";
  }
  const adapterCount = Math.max(0, Math.floor(input.supportedAdapterCount ?? 0));
  if (adapterCount >= 2) return "multi_adapter_consensus";
  if (adapterCount === 1) return "single_adapter_support";
  return "manual_pattern_consensus";
}