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

const createTelegramDraftStream = vi.hoisted(() => vi.fn());
const dispatchReplyWithBufferedBlockDispatcher = vi.hoisted(() => vi.fn());
const deliverReplies = vi.hoisted(() => vi.fn());
const editMessageTelegram = vi.hoisted(() => vi.fn());

vi.mock("./draft-stream.js", () => ({
  createTelegramDraftStream,
}));

vi.mock("../auto-reply/reply/provider-dispatcher.js", () => ({
  dispatchReplyWithBufferedBlockDispatcher,
}));

vi.mock("./bot/delivery.js", () => ({
  deliverReplies,
}));

vi.mock("./send.js", () => ({
  editMessageTelegram,
}));

vi.mock("./sticker-cache.js", () => ({
  cacheSticker: vi.fn(),
  describeStickerImage: vi.fn(),
}));

import { dispatchTelegramMessage } from "./bot-message-dispatch.js";

describe("dispatchTelegramMessage draft streaming", () => {
  beforeEach(() => {
    createTelegramDraftStream.mockReset();
    dispatchReplyWithBufferedBlockDispatcher.mockReset();
    deliverReplies.mockReset();
    editMessageTelegram.mockReset();
  });

  it("streams drafts in private threads and forwards thread id", async () => {
    const draftStream = {
      update: vi.fn(),
      flush: vi.fn().mockResolvedValue(undefined),
      messageId: vi.fn().mockReturnValue(undefined),
      clear: vi.fn().mockResolvedValue(undefined),
      stop: vi.fn(),
    };
    createTelegramDraftStream.mockReturnValue(draftStream);
    dispatchReplyWithBufferedBlockDispatcher.mockImplementation(
      async ({ dispatcherOptions, replyOptions }) => {
        await replyOptions?.onPartialReply?.({ text: "Hello" });
        await dispatcherOptions.deliver({ text: "Hello" }, { kind: "final" });
        return { queuedFinal: true };
      },
    );
    deliverReplies.mockResolvedValue({ delivered: true });

    const context = {
      ctxPayload: {},
      primaryCtx: { message: { chat: { id: 123, type: "private" } } },
      msg: {
        chat: { id: 123, type: "private" },
        message_id: 456,
        message_thread_id: 777,
      },
      chatId: 123,
      isGroup: false,
      resolvedThreadId: undefined,
      replyThreadId: 777,
      threadSpec: { id: 777, scope: "dm" },
      historyKey: undefined,
      historyLimit: 0,
      groupHistories: new Map(),
      route: { agentId: "default", accountId: "default" },
      skillFilter: undefined,
      sendTyping: vi.fn(),
      sendRecordVoice: vi.fn(),
      ackReactionPromise: null,
      reactionApi: null,
      removeAckAfterReply: false,
    };

    const bot = { api: { sendMessage: vi.fn(), editMessageText: vi.fn() } } as unknown as Bot;
    const runtime = {
      log: vi.fn(),
      error: vi.fn(),
      exit: () => {
        throw new Error("exit");
      },
    };

    await dispatchTelegramMessage({
      context,
      bot,
      cfg: {},
      runtime,
      replyToMode: "first",
      streamMode: "partial",
      textLimit: 4096,
      telegramCfg: {},
      opts: { token: "token" },
    });

    expect(createTelegramDraftStream).toHaveBeenCalledWith(
      expect.objectContaining({
        chatId: 123,
        thread: { id: 777, scope: "dm" },
      }),
    );
    expect(draftStream.update).toHaveBeenCalledWith("Hello");
    expect(deliverReplies).toHaveBeenCalledWith(
      expect.objectContaining({
        thread: { id: 777, scope: "dm" },
      }),
    );
    expect(dispatchReplyWithBufferedBlockDispatcher).toHaveBeenCalledWith(
      expect.objectContaining({
        replyOptions: expect.objectContaining({
          disableBlockStreaming: true,
        }),
      }),
    );
    expect(editMessageTelegram).not.toHaveBeenCalled();
    expect(draftStream.clear).toHaveBeenCalledTimes(1);
  });

  it("keeps block streaming enabled when account config enables it", async () => {
    dispatchReplyWithBufferedBlockDispatcher.mockImplementation(async ({ dispatcherOptions }) => {
      await dispatcherOptions.deliver({ text: "Hello" }, { kind: "final" });
      return { queuedFinal: true };
    });
    deliverReplies.mockResolvedValue({ delivered: true });

    const context = {
      ctxPayload: {},
      primaryCtx: { message: { chat: { id: 123, type: "private" } } },
      msg: {
        chat: { id: 123, type: "private" },
        message_id: 456,
        message_thread_id: 777,
      },
      chatId: 123,
      isGroup: false,
      resolvedThreadId: undefined,
      replyThreadId: 777,
      threadSpec: { id: 777, scope: "dm" },
      historyKey: undefined,
      historyLimit: 0,
      groupHistories: new Map(),
      route: { agentId: "default", accountId: "default" },
      skillFilter: undefined,
      sendTyping: vi.fn(),
      sendRecordVoice: vi.fn(),
      ackReactionPromise: null,
      reactionApi: null,
      removeAckAfterReply: false,
    };
    const bot = { api: { sendMessage: vi.fn(), editMessageText: vi.fn() } } as unknown as Bot;
    const runtime = {
      log: vi.fn(),
      error: vi.fn(),
      exit: () => {
        throw new Error("exit");
      },
    };

    await dispatchTelegramMessage({
      context,
      bot,
      cfg: {},
      runtime,
      replyToMode: "first",
      streamMode: "partial",
      textLimit: 4096,
      telegramCfg: { blockStreaming: true },
      opts: { token: "token" },
    });

    expect(createTelegramDraftStream).not.toHaveBeenCalled();
    expect(dispatchReplyWithBufferedBlockDispatcher).toHaveBeenCalledWith(
      expect.objectContaining({
        replyOptions: expect.objectContaining({
          disableBlockStreaming: false,
          onPartialReply: undefined,
        }),
      }),
    );
  });

  it("finalizes text-only replies by editing the preview message in place", async () => {
    const draftStream = {
      update: vi.fn(),
      flush: vi.fn().mockResolvedValue(undefined),
      messageId: vi.fn().mockReturnValue(999),
      clear: vi.fn().mockResolvedValue(undefined),
      stop: vi.fn(),
    };
    createTelegramDraftStream.mockReturnValue(draftStream);
    dispatchReplyWithBufferedBlockDispatcher.mockImplementation(
      async ({ dispatcherOptions, replyOptions }) => {
        await replyOptions?.onPartialReply?.({ text: "Hel" });
        await dispatcherOptions.deliver({ text: "Hello final" }, { kind: "final" });
        return { queuedFinal: true };
      },
    );
    deliverReplies.mockResolvedValue({ delivered: true });
    editMessageTelegram.mockResolvedValue({ ok: true, chatId: "123", messageId: "999" });

    const context = {
      ctxPayload: {},
      primaryCtx: { message: { chat: { id: 123, type: "private" } } },
      msg: {
        chat: { id: 123, type: "private" },
        message_id: 456,
        message_thread_id: 777,
      },
      chatId: 123,
      isGroup: false,
      resolvedThreadId: undefined,
      replyThreadId: 777,
      threadSpec: { id: 777, scope: "dm" },
      historyKey: undefined,
      historyLimit: 0,
      groupHistories: new Map(),
      route: { agentId: "default", accountId: "default" },
      skillFilter: undefined,
      sendTyping: vi.fn(),
      sendRecordVoice: vi.fn(),
      ackReactionPromise: null,
      reactionApi: null,
      removeAckAfterReply: false,
    };

    const bot = { api: { sendMessage: vi.fn(), editMessageText: vi.fn() } } as unknown as Bot;
    const runtime = {
      log: vi.fn(),
      error: vi.fn(),
      exit: () => {
        throw new Error("exit");
      },
    };

    await dispatchTelegramMessage({
      context,
      bot,
      cfg: {},
      runtime,
      replyToMode: "first",
      streamMode: "partial",
      textLimit: 4096,
      telegramCfg: {},
      opts: { token: "token" },
    });

    expect(editMessageTelegram).toHaveBeenCalledWith(123, 999, "Hello final", expect.any(Object));
    expect(deliverReplies).not.toHaveBeenCalled();
    expect(draftStream.clear).not.toHaveBeenCalled();
    expect(draftStream.stop).toHaveBeenCalled();
  });

  it("falls back to normal delivery when preview final is too long to edit", async () => {
    const draftStream = {
      update: vi.fn(),
      flush: vi.fn().mockResolvedValue(undefined),
      messageId: vi.fn().mockReturnValue(999),
      clear: vi.fn().mockResolvedValue(undefined),
      stop: vi.fn(),
    };
    createTelegramDraftStream.mockReturnValue(draftStream);
    const longText = "x".repeat(5000);
    dispatchReplyWithBufferedBlockDispatcher.mockImplementation(async ({ dispatcherOptions }) => {
      await dispatcherOptions.deliver({ text: longText }, { kind: "final" });
      return { queuedFinal: true };
    });
    deliverReplies.mockResolvedValue({ delivered: true });
    editMessageTelegram.mockResolvedValue({ ok: true, chatId: "123", messageId: "999" });

    const context = {
      ctxPayload: {},
      primaryCtx: { message: { chat: { id: 123, type: "private" } } },
      msg: {
        chat: { id: 123, type: "private" },
        message_id: 456,
        message_thread_id: 777,
      },
      chatId: 123,
      isGroup: false,
      resolvedThreadId: undefined,
      replyThreadId: 777,
      threadSpec: { id: 777, scope: "dm" },
      historyKey: undefined,
      historyLimit: 0,
      groupHistories: new Map(),
      route: { agentId: "default", accountId: "default" },
      skillFilter: undefined,
      sendTyping: vi.fn(),
      sendRecordVoice: vi.fn(),
      ackReactionPromise: null,
      reactionApi: null,
      removeAckAfterReply: false,
    };

    const bot = { api: { sendMessage: vi.fn(), editMessageText: vi.fn() } } as unknown as Bot;
    const runtime = {
      log: vi.fn(),
      error: vi.fn(),
      exit: () => {
        throw new Error("exit");
      },
    };

    await dispatchTelegramMessage({
      context,
      bot,
      cfg: {},
      runtime,
      replyToMode: "first",
      streamMode: "partial",
      textLimit: 4096,
      telegramCfg: {},
      opts: { token: "token" },
    });

    expect(editMessageTelegram).not.toHaveBeenCalled();
    expect(deliverReplies).toHaveBeenCalledWith(
      expect.objectContaining({
        replies: [expect.objectContaining({ text: longText })],
      }),
    );
    expect(draftStream.clear).toHaveBeenCalledTimes(1);
    expect(draftStream.stop).toHaveBeenCalled();
  });
});