/** Owner-boundary tests for durable assistant-transcript repair records and replay. */
import { beforeEach, describe, expect, it, vi } from "vitest";
import type { appendExactAssistantMessageToSessionTranscript } from "../../config/sessions/transcript.runtime.js";
import type { SessionEntry } from "../../config/sessions/types.js";
import {
  persistAssistantTranscriptRepairRecord,
  repairPendingAssistantTranscriptTurns,
} from "./assistant-transcript-repair.js";
import type { persistAgentSession } from "./attempt-execution.shared.js";

type AppendExactAssistantMessage = typeof appendExactAssistantMessageToSessionTranscript;
type PersistAgentSession = typeof persistAgentSession;

const mocks = vi.hoisted(() => ({
  appendExactAssistantMessage: vi.fn<AppendExactAssistantMessage>(),
  persistAgentSession: vi.fn<PersistAgentSession>(),
  warn: vi.fn(),
}));

vi.mock("./attempt-execution.shared.js", () => ({
  persistAgentSession: (...args: Parameters<PersistAgentSession>) =>
    mocks.persistAgentSession(...args),
}));

vi.mock("./runtime-loaders.js", () => ({
  loadTranscriptAppendRuntime: async () => ({
    appendExactAssistantMessageToSessionTranscript: (
      ...args: Parameters<AppendExactAssistantMessage>
    ) => mocks.appendExactAssistantMessage(...args),
  }),
}));

vi.mock("../harness/hook-helpers.js", () => ({
  runAgentHarnessBeforeMessageWriteHook: ({ message }: { message: unknown }) => message,
}));

vi.mock("../../logging/subsystem.js", () => ({
  createSubsystemLogger: () => ({
    info: vi.fn(),
    warn: mocks.warn,
  }),
}));

const sessionKey = "agent:main:explicit:repair";
const storePath = "/tmp/sessions.json";

function makeEntry(
  overrides: Partial<SessionEntry> = {},
): SessionEntry & { sessionId: string; updatedAt: number } {
  return {
    sessionId: "session-1",
    updatedAt: 1,
    ...overrides,
  };
}

function makeContext(entry: SessionEntry) {
  const sessionStore = { [sessionKey]: entry };
  return {
    context: {
      sessionKey,
      sessionEntry: entry,
      sessionStore,
      storePath,
      sessionAgentId: "main",
      config: {},
    },
    sessionStore,
  };
}

function successfulAppend(messageId: string) {
  return {
    ok: true as const,
    target: {
      agentId: "main",
      sessionId: "session-1",
      sessionKey,
      storePath,
    },
    messageId,
  };
}

beforeEach(() => {
  vi.clearAllMocks();
  mocks.appendExactAssistantMessage.mockResolvedValue(successfulAppend("message-1"));
  mocks.persistAgentSession.mockImplementation(async (params) => {
    const current = params.sessionStore[params.sessionKey];
    if (params.shouldPersist?.(current) === false) {
      return undefined;
    }
    params.sessionStore[params.sessionKey] = params.entry;
    return params.entry;
  });
});

describe("persistAssistantTranscriptRepairRecord", () => {
  it("appends a canonical record and fences it to the run-owned session", async () => {
    const existingRepair = { id: "repair-1", text: "first", createdAt: 1 };
    const entry = makeEntry({ pendingTranscriptRepair: [existingRepair] });
    const { context, sessionStore } = makeContext(entry);

    await persistAssistantTranscriptRepairRecord({
      context,
      replyText: "second",
      provider: " openai ",
      model: " gpt-5.5 ",
      runOwnedSessionId: entry.sessionId,
    });

    expect(sessionStore[sessionKey]?.pendingTranscriptRepair).toEqual([
      existingRepair,
      {
        id: expect.any(String),
        text: "second",
        provider: "openai",
        model: "gpt-5.5",
        createdAt: expect.any(Number),
      },
    ]);
    const shouldPersist = mocks.persistAgentSession.mock.calls[0]?.[0].shouldPersist;
    expect(shouldPersist?.(makeEntry())).toBe(true);
    expect(shouldPersist?.(makeEntry({ sessionId: "replacement" }))).toBe(false);
    expect(shouldPersist?.(makeEntry({ abortedLastRun: true }))).toBe(false);
  });

  it("does not fail the completed turn when repair-record persistence fails", async () => {
    const { context } = makeContext(makeEntry());
    mocks.persistAgentSession.mockRejectedValueOnce(new Error("store unavailable"));

    await expect(
      persistAssistantTranscriptRepairRecord({
        context,
        replyText: "recover me",
        runOwnedSessionId: "session-1",
      }),
    ).resolves.toBeUndefined();

    expect(mocks.warn).toHaveBeenCalledWith(expect.stringContaining("store unavailable"));
  });
});

describe("repairPendingAssistantTranscriptTurns", () => {
  it("replays every missing final in order before clearing the backlog", async () => {
    const entry = makeEntry({
      pendingTranscriptRepair: [
        {
          id: "repair-1",
          text: "first",
          provider: "openai",
          model: "gpt-5.5",
          createdAt: 10,
        },
        { id: "repair-2", text: "second", createdAt: 20 },
      ],
    });
    const { context, sessionStore } = makeContext(entry);
    mocks.appendExactAssistantMessage
      .mockResolvedValueOnce(successfulAppend("message-1"))
      .mockResolvedValueOnce(successfulAppend("message-2"));

    await repairPendingAssistantTranscriptTurns({ context });

    expect(mocks.appendExactAssistantMessage).toHaveBeenCalledTimes(2);
    expect(mocks.appendExactAssistantMessage.mock.calls.map(([params]) => params)).toEqual([
      expect.objectContaining({
        idempotencyKey: "transcript-repair:repair-1",
        expectedSessionId: "session-1",
        updateMode: "file-only",
        message: expect.objectContaining({
          provider: "openai",
          model: "gpt-5.5",
          timestamp: 10,
          content: [{ type: "text", text: "first" }],
        }),
      }),
      expect.objectContaining({
        idempotencyKey: "transcript-repair:repair-2",
        message: expect.objectContaining({
          provider: "cli",
          model: "default",
          timestamp: 20,
          content: [{ type: "text", text: "second" }],
        }),
      }),
    ]);
    expect(sessionStore[sessionKey]?.pendingTranscriptRepair).toBeUndefined();
  });

  it("keeps the backlog and blocks admission while an append is unavailable", async () => {
    const entry = makeEntry({
      pendingTranscriptRepair: [{ id: "repair-1", text: "missing", createdAt: 10 }],
    });
    const { context, sessionStore } = makeContext(entry);
    mocks.appendExactAssistantMessage.mockResolvedValueOnce({
      ok: false,
      reason: "transcript store unavailable",
    });

    await expect(repairPendingAssistantTranscriptTurns({ context })).rejects.toThrow(
      "pending transcript recovery",
    );

    expect(mocks.persistAgentSession).not.toHaveBeenCalled();
    expect(sessionStore[sessionKey]?.pendingTranscriptRepair).toHaveLength(1);
  });

  it("drops a final blocked by before_message_write and clears the backlog", async () => {
    const entry = makeEntry({
      pendingTranscriptRepair: [{ id: "repair-1", text: "blocked", createdAt: 10 }],
    });
    const { context, sessionStore } = makeContext(entry);
    mocks.appendExactAssistantMessage.mockResolvedValueOnce({
      ok: false,
      code: "blocked",
      reason: "blocked by before_message_write",
    });

    await repairPendingAssistantTranscriptTurns({ context });

    expect(sessionStore[sessionKey]?.pendingTranscriptRepair).toBeUndefined();
  });

  it("retries cleanup with the same append idempotency key", async () => {
    const entry = makeEntry({
      pendingTranscriptRepair: [{ id: "repair-1", text: "missing", createdAt: 10 }],
    });
    const { context, sessionStore } = makeContext(entry);
    mocks.persistAgentSession.mockRejectedValueOnce(new Error("cleanup unavailable"));

    await repairPendingAssistantTranscriptTurns({ context });
    expect(sessionStore[sessionKey]?.pendingTranscriptRepair).toHaveLength(1);

    await repairPendingAssistantTranscriptTurns({ context });

    expect(
      mocks.appendExactAssistantMessage.mock.calls.map(([params]) => params.idempotencyKey),
    ).toEqual(["transcript-repair:repair-1", "transcript-repair:repair-1"]);
    expect(sessionStore[sessionKey]?.pendingTranscriptRepair).toBeUndefined();
  });

  it("does not clear repair state from a replacement session", async () => {
    const entry = makeEntry({
      pendingTranscriptRepair: [{ id: "repair-1", text: "missing", createdAt: 10 }],
    });
    const { context, sessionStore } = makeContext(entry);
    mocks.appendExactAssistantMessage.mockImplementationOnce(async () => {
      sessionStore[sessionKey] = makeEntry({ sessionId: "replacement" });
      return successfulAppend("message-1");
    });

    await repairPendingAssistantTranscriptTurns({ context });

    expect(mocks.persistAgentSession).not.toHaveBeenCalled();
    expect(sessionStore[sessionKey]?.sessionId).toBe("replacement");
  });
});