import { beforeEach, describe, expect, it, vi } from "vitest";

const resolveFeishuAccountMock = vi.hoisted(() => vi.fn());
const getFeishuRuntimeMock = vi.hoisted(() => vi.fn());
const sendMessageFeishuMock = vi.hoisted(() => vi.fn());
const sendMarkdownCardFeishuMock = vi.hoisted(() => vi.fn());
const sendMediaFeishuMock = vi.hoisted(() => vi.fn());
const createFeishuClientMock = vi.hoisted(() => vi.fn());
const resolveReceiveIdTypeMock = vi.hoisted(() => vi.fn());
const createReplyDispatcherWithTypingMock = vi.hoisted(() => vi.fn());
const addTypingIndicatorMock = vi.hoisted(() => vi.fn(async () => ({ messageId: "om_msg" })));
const removeTypingIndicatorMock = vi.hoisted(() => vi.fn(async () => {}));
const streamingInstances = vi.hoisted(() => [] as any[]);

vi.mock("./accounts.js", () => ({ resolveFeishuAccount: resolveFeishuAccountMock }));
vi.mock("./runtime.js", () => ({ getFeishuRuntime: getFeishuRuntimeMock }));
vi.mock("./send.js", () => ({
  sendMessageFeishu: sendMessageFeishuMock,
  sendMarkdownCardFeishu: sendMarkdownCardFeishuMock,
}));
vi.mock("./media.js", () => ({ sendMediaFeishu: sendMediaFeishuMock }));
vi.mock("./client.js", () => ({ createFeishuClient: createFeishuClientMock }));
vi.mock("./targets.js", () => ({ resolveReceiveIdType: resolveReceiveIdTypeMock }));
vi.mock("./typing.js", () => ({
  addTypingIndicator: addTypingIndicatorMock,
  removeTypingIndicator: removeTypingIndicatorMock,
}));
vi.mock("./streaming-card.js", async () => {
  const actual = await vi.importActual<typeof import("./streaming-card.js")>("./streaming-card.js");
  return {
    mergeStreamingText: actual.mergeStreamingText,
    FeishuStreamingSession: class {
      active = false;
      start = vi.fn(async () => {
        this.active = true;
      });
      update = vi.fn(async () => {});
      close = vi.fn(async () => {
        this.active = false;
      });
      isActive = vi.fn(() => this.active);

      constructor() {
        streamingInstances.push(this);
      }
    },
  };
});

import { createFeishuReplyDispatcher } from "./reply-dispatcher.js";

describe("createFeishuReplyDispatcher streaming behavior", () => {
  type ReplyDispatcherArgs = Parameters<typeof createFeishuReplyDispatcher>[0];

  beforeEach(() => {
    vi.clearAllMocks();
    streamingInstances.length = 0;
    sendMediaFeishuMock.mockResolvedValue(undefined);

    resolveFeishuAccountMock.mockReturnValue({
      accountId: "main",
      appId: "app_id",
      appSecret: "app_secret",
      domain: "feishu",
      config: {
        renderMode: "auto",
        streaming: true,
      },
    });

    resolveReceiveIdTypeMock.mockReturnValue("chat_id");
    createFeishuClientMock.mockReturnValue({});

    createReplyDispatcherWithTypingMock.mockImplementation((opts) => ({
      dispatcher: {},
      replyOptions: {},
      markDispatchIdle: vi.fn(),
      _opts: opts,
    }));

    getFeishuRuntimeMock.mockReturnValue({
      channel: {
        text: {
          resolveTextChunkLimit: vi.fn(() => 4000),
          resolveChunkMode: vi.fn(() => "line"),
          resolveMarkdownTableMode: vi.fn(() => "preserve"),
          convertMarkdownTables: vi.fn((text) => text),
          chunkTextWithMode: vi.fn((text) => [text]),
        },
        reply: {
          createReplyDispatcherWithTyping: createReplyDispatcherWithTypingMock,
          resolveHumanDelayConfig: vi.fn(() => undefined),
        },
      },
    });
  });

  function setupNonStreamingAutoDispatcher() {
    resolveFeishuAccountMock.mockReturnValue({
      accountId: "main",
      appId: "app_id",
      appSecret: "app_secret",
      domain: "feishu",
      config: {
        renderMode: "auto",
        streaming: false,
      },
    });

    createFeishuReplyDispatcher({
      cfg: {} as never,
      agentId: "agent",
      runtime: { log: vi.fn(), error: vi.fn() } as never,
      chatId: "oc_chat",
    });

    return createReplyDispatcherWithTypingMock.mock.calls[0]?.[0];
  }

  function createRuntimeLogger() {
    return { log: vi.fn(), error: vi.fn() } as never;
  }

  function createDispatcherHarness(overrides: Partial<ReplyDispatcherArgs> = {}) {
    const result = createFeishuReplyDispatcher({
      cfg: {} as never,
      agentId: "agent",
      runtime: {} as never,
      chatId: "oc_chat",
      ...overrides,
    });

    return {
      result,
      options: createReplyDispatcherWithTypingMock.mock.calls.at(-1)?.[0],
    };
  }

  it("keeps auto mode plain text on non-streaming send path", async () => {
    const { options } = createDispatcherHarness();
    await options.deliver({ text: "plain text" }, { kind: "final" });

    expect(streamingInstances).toHaveLength(0);
    expect(sendMessageFeishuMock).toHaveBeenCalledTimes(1);
    expect(sendMarkdownCardFeishuMock).not.toHaveBeenCalled();
  });

  it("suppresses internal block payload delivery", async () => {
    const { options } = createDispatcherHarness();
    await options.deliver({ text: "internal reasoning chunk" }, { kind: "block" });

    expect(streamingInstances).toHaveLength(0);
    expect(sendMessageFeishuMock).not.toHaveBeenCalled();
    expect(sendMarkdownCardFeishuMock).not.toHaveBeenCalled();
    expect(sendMediaFeishuMock).not.toHaveBeenCalled();
  });

  it("sets disableBlockStreaming in replyOptions to prevent silent reply drops", async () => {
    const result = createFeishuReplyDispatcher({
      cfg: {} as never,
      agentId: "agent",
      runtime: {} as never,
      chatId: "oc_chat",
    });

    expect(result.replyOptions).toHaveProperty("disableBlockStreaming", true);
  });

  it("uses streaming session for auto mode markdown payloads", async () => {
    const { options } = createDispatcherHarness({
      runtime: createRuntimeLogger(),
      rootId: "om_root_topic",
    });
    await options.deliver({ text: "```ts\nconst x = 1\n```" }, { kind: "final" });

    expect(streamingInstances).toHaveLength(1);
    expect(streamingInstances[0].start).toHaveBeenCalledTimes(1);
    expect(streamingInstances[0].start).toHaveBeenCalledWith("oc_chat", "chat_id", {
      replyToMessageId: undefined,
      replyInThread: undefined,
      rootId: "om_root_topic",
    });
    expect(streamingInstances[0].close).toHaveBeenCalledTimes(1);
    expect(sendMessageFeishuMock).not.toHaveBeenCalled();
    expect(sendMarkdownCardFeishuMock).not.toHaveBeenCalled();
  });

  it("treats block updates as delta chunks", async () => {
    resolveFeishuAccountMock.mockReturnValue({
      accountId: "main",
      appId: "app_id",
      appSecret: "app_secret",
      domain: "feishu",
      config: {
        renderMode: "card",
        streaming: true,
      },
    });

    const { result, options } = createDispatcherHarness({
      runtime: createRuntimeLogger(),
    });
    await options.onReplyStart?.();
    await result.replyOptions.onPartialReply?.({ text: "hello" });
    await options.deliver({ text: "lo world" }, { kind: "block" });
    await options.onIdle?.();

    expect(streamingInstances).toHaveLength(1);
    expect(streamingInstances[0].close).toHaveBeenCalledTimes(1);
    expect(streamingInstances[0].close).toHaveBeenCalledWith("hellolo world");
  });

  it("sends media-only payloads as attachments", async () => {
    const { options } = createDispatcherHarness();
    await options.deliver({ mediaUrl: "https://example.com/a.png" }, { kind: "final" });

    expect(sendMediaFeishuMock).toHaveBeenCalledTimes(1);
    expect(sendMediaFeishuMock).toHaveBeenCalledWith(
      expect.objectContaining({
        to: "oc_chat",
        mediaUrl: "https://example.com/a.png",
      }),
    );
    expect(sendMessageFeishuMock).not.toHaveBeenCalled();
    expect(sendMarkdownCardFeishuMock).not.toHaveBeenCalled();
  });

  it("falls back to legacy mediaUrl when mediaUrls is an empty array", async () => {
    const { options } = createDispatcherHarness();
    await options.deliver(
      { text: "caption", mediaUrl: "https://example.com/a.png", mediaUrls: [] },
      { kind: "final" },
    );

    expect(sendMessageFeishuMock).toHaveBeenCalledTimes(1);
    expect(sendMediaFeishuMock).toHaveBeenCalledTimes(1);
    expect(sendMediaFeishuMock).toHaveBeenCalledWith(
      expect.objectContaining({
        mediaUrl: "https://example.com/a.png",
      }),
    );
  });

  it("sends attachments after streaming final markdown replies", async () => {
    const { options } = createDispatcherHarness({
      runtime: createRuntimeLogger(),
    });
    await options.deliver(
      { text: "```ts\nconst x = 1\n```", mediaUrls: ["https://example.com/a.png"] },
      { kind: "final" },
    );

    expect(streamingInstances).toHaveLength(1);
    expect(streamingInstances[0].start).toHaveBeenCalledTimes(1);
    expect(streamingInstances[0].close).toHaveBeenCalledTimes(1);
    expect(sendMediaFeishuMock).toHaveBeenCalledTimes(1);
    expect(sendMediaFeishuMock).toHaveBeenCalledWith(
      expect.objectContaining({
        mediaUrl: "https://example.com/a.png",
      }),
    );
  });

});