/**
 * V10 rectification turn runner over the durable V9 Case/Evidence domains.
 *
 * Tool activity is published as it happens so the browser can render stages.
 * The user-visible reply is the model's terminal `text-delta`, streamed live
 * once that step is the spoken answer. Provider thinking stays on
 * `reasoning-delta` and is not a public stream event. Server narration is
 * only the empty-stream fallback after tools. A retried attempt emits
 * `attempt.reset` first so the client discards the abandoned attempt.
 * Durable receipts, billing, and settled history still come only from the
 * successful attempt.
 *
 * Phases live in their own modules (TASK-rectification-code-split-20260926):
 * preparation → agent-run-prepare.ts, one attempt → agent-run-attempt.ts,
 * the retry loop → agent-run-retry.ts, the finish → agent-run-finish.ts,
 * shared outcome types and receipt writers → agent-run-support.ts, the model
 * messages → agent-run-messages.ts. This file keeps the public types and the
 * order of the phases.
 */
import type { Agent } from "@mastra/core/agent";
import type { RectificationAgentAction } from "./step-budget";
import type { RectificationRpcClient } from "./tool-service";
import { RECTIFICATION_SKILL_NAME, RECTIFICATION_SKILL_VERSION } from "./case-status";
import type { promptCacheUsage } from "../../agent-generation-settings.ts";
import {
  RECTIFICATION_AGENT_ATTEMPT_TIMEOUT_MS,
  RECTIFICATION_AGENT_ROUTE_MAX_DURATION_S,
  RECTIFICATION_MIN_RETRY_ATTEMPT_MS,
  RECTIFICATION_RUN_BUDGET_MS,
} from "../../rectification-run-budget.ts";
import type { ResolvedSkillPackageIdentity } from "../../skill-package-registry.ts";
import type { PublicStreamEvent } from "./stream-mapping";
import type { TurnIntentClassifierDiagnostic } from "./turn-intent-classifier";
import type { RectificationMessageOrigin } from "./message-origin";
import { prepareV9AgentTurn, type V9TimedTurn } from "./agent-run-prepare";
import { runV9AttemptsWithRetry } from "./agent-run-retry";
import { finishV9AgentTurn } from "./agent-run-finish";

export { buildAgentMessages, buildOpeningBrief } from "./agent-run-messages";

export type V9RunBilling = Readonly<{
  reserve(): Promise<{ success: boolean; reason?: string; status: number }>;
  complete(input: {
    inputTokens: number;
    outputTokens: number;
    durationMs: number;
    cache?: ReturnType<typeof promptCacheUsage>;
  }): Promise<boolean>;
  release(): Promise<boolean>;
}>;

export type V9AgentRunOptions = Readonly<{
  userId: string;
  caseId: string;
  sessionId: string;
  requestId: string;
  action: RectificationAgentAction;
  message: string | null;
  messageOrigin?: RectificationMessageOrigin;
  clientActionId?: string | null;
  modelName: string;
  skillName?: string;
  skillVersion?: string;
  accounting: RectificationRpcClient;
  buildAgent(
    turnId: string,
    skillPackage: ResolvedSkillPackageIdentity,
    attemptId: string,
  ): Promise<Agent>;
  billing: V9RunBilling;
  emit(event: PublicStreamEvent): Promise<void> | void;
  signal?: AbortSignal;
  timeContext?: string;
  generationModel?: unknown;
  attemptTimeoutMs?: number;
  runBudgetMs?: number;
  minRetryAttemptMs?: number;
  expectedWrite?: "evidence" | "none" | "unknown";
  collectIntent?: "classified" | "unclassified" | null;
  /** Classifier timing from the route preflight, for the run diagnostic only. */
  classifierDiagnostic?: TurnIntentClassifierDiagnostic | null;
  /**
   * Credible range before this user message, when the route already persisted
   * part of the message (a typed choice answer that also carries a dated
   * event) before the run. Undefined: read it from the prepared dossier.
   */
  rangeBeforeTurn?: readonly [string, string] | null;
}>;

export {
  RECTIFICATION_AGENT_ATTEMPT_TIMEOUT_MS,
  RECTIFICATION_AGENT_ROUTE_MAX_DURATION_S,
  RECTIFICATION_MIN_RETRY_ATTEMPT_MS,
  RECTIFICATION_RUN_BUDGET_MS,
};

export type V9AgentRunResult = Readonly<{
  ok: boolean;
  turnId: string;
  turnStatus: "completed" | "failed" | "retryable";
  skillLoaded: boolean;
  answerText: string;
  phases: readonly string[];
  toolsUsed: readonly string[];
  errorCode: string | null;
  previousFocusId: string | null;
  /**
   * True when this run's own post-turn interview call found the next focus
   * already active and linked it to this turn (BUG-1047 D5). The route's
   * common exit gate then skips its second, identical re-read.
   */
  interviewSettled?: boolean;
}>;

export async function runV9AgentTurn(options: V9AgentRunOptions): Promise<V9AgentRunResult> {
  // Preparation either answers the turn outright (year re-ask, already
  // delivered, idempotent replay) or hands back the pending turn to run.
  const prepared = await prepareV9AgentTurn(options);
  if ("ok" in prepared) return prepared;

  const startedAt = Date.now();
  const runBudgetMs = options.runBudgetMs ?? RECTIFICATION_RUN_BUDGET_MS;
  const minRetryAttemptMs = options.minRetryAttemptMs ?? RECTIFICATION_MIN_RETRY_ATTEMPT_MS;
  const attemptCapMs = options.attemptTimeoutMs ?? RECTIFICATION_AGENT_ATTEMPT_TIMEOUT_MS;
  const runDeadlineAt = startedAt + runBudgetMs;
  const turn: V9TimedTurn = {
    ...prepared,
    startedAt,
    runBudgetMs,
    minRetryAttemptMs,
    attemptCapMs,
    runDeadlineAt,
  };
  const { emit } = turn;
  await emit({ type: "run.started" });

  const outcome = await runV9AttemptsWithRetry(turn);
  return finishV9AgentTurn(turn, outcome);
}

export { RECTIFICATION_SKILL_NAME, RECTIFICATION_SKILL_VERSION };