// @vitest-environment jsdom

import { act, type ReactNode } from "react";
import { createRoot, type Root } from "react-dom/client";
import { QueryClient, QueryClientProvider } from "@tanstack/react-query";
import { afterEach, beforeEach, describe, expect, it, vi } from "vitest";
import { TooltipProvider } from "@/components/ui/tooltip";
import { SidebarRecentTasks } from "./SidebarRecentTasks";
import {
  getRecentTasksStorageKey,
  readRecentTasks,
  recordRecentTask,
  pruneRecentTasks,
} from "@/lib/recent-tasks";
import { queryKeys } from "@/lib/queryKeys";

const mockAuthApi = vi.hoisted(() => ({ getSession: vi.fn() }));
const mockAgentsApi = vi.hoisted(() => ({ wakeup: vi.fn() }));
const mockIssuesApi = vi.hoisted(() => ({
  get: vi.fn(),
  update: vi.fn(),
  archiveFromInbox: vi.fn(),
  getTreeControlState: vi.fn(),
  createTreeHold: vi.fn(),
  releaseTreeHold: vi.fn(),
}));

vi.mock("@/api/agents", () => ({ agentsApi: mockAgentsApi }));
vi.mock("@/api/auth", () => ({ authApi: mockAuthApi }));
vi.mock("@/api/issues", () => ({ issuesApi: mockIssuesApi }));
vi.mock("@/lib/router", () => ({
  NavLink: ({ children, to, className, ...props }: {
    children: ReactNode;
    to: string;
    className?: string | ((state: { isActive: boolean }) => string);
  }) => (
    <a
      href={to}
      className={typeof className === "function" ? className({ isActive: false }) : className}
      {...props}
    >
      {children}
    </a>
  ),
}));
vi.mock("@/context/SidebarContext", () => ({
  useSidebar: () => ({
    collapsed: false,
    peeking: false,
    isMobile: false,
    setSidebarOpen: vi.fn(),
  }),
}));

// eslint-disable-next-line @typescript-eslint/no-explicit-any
(globalThis as any).IS_REACT_ACT_ENVIRONMENT = true;

describe("SidebarRecentTasks", () => {
  let container: HTMLDivElement;
  let root: Root;

  beforeEach(() => {
    window.localStorage.clear();
    Object.values(mockAgentsApi).forEach((mock) => mock.mockReset());
    Object.values(mockIssuesApi).forEach((mock) => mock.mockReset());
    container = document.createElement("div");
    document.body.appendChild(container);
    root = createRoot(container);
    mockAuthApi.getSession.mockResolvedValue({
      session: { id: "session-1", userId: "user-1" },
      user: { id: "user-1", name: "Board", email: "board@example.test", image: null },
    });
  });

  afterEach(() => {
    act(() => root.unmount());
    container.remove();
    vi.clearAllMocks();
    vi.useRealTimers();
  });

  async function render() {
    const queryClient = new QueryClient({ defaultOptions: { queries: { retry: false } } });
    await act(async () => {
      root.render(
        <QueryClientProvider client={queryClient}>
          <TooltipProvider>
            <SidebarRecentTasks companyId="company-1" liveIssueIds={new Set(["issue-1"])} />
          </TooltipProvider>
        </QueryClientProvider>,
      );
    });
    await act(async () => {
      for (let index = 0; index < 5; index += 1) {
        await Promise.resolve();
        await new Promise((resolve) => window.setTimeout(resolve, 0));
      }
    });
    return queryClient;
  }

  async function openActions(taskTitle: string) {
    const actions = container.querySelector<HTMLButtonElement>(
      `button[aria-label="More actions for ${taskTitle}"]`,
    );
    await act(async () => {
      actions?.dispatchEvent(new PointerEvent("pointerdown", { bubbles: true }));
      await Promise.resolve();
    });
  }

  function menuItem(label: string) {
    return Array.from(document.body.querySelectorAll<HTMLElement>('[role="menuitem"]'))
      .find((item) => item.textContent?.trim() === label);
  }

  function setInputValue(input: HTMLInputElement, value: string) {
    const setter = Object.getOwnPropertyDescriptor(HTMLInputElement.prototype, "value")?.set;
    setter?.call(input, value);
    input.dispatchEvent(new Event("input", { bubbles: true }));
  }

  it("hides the section when there are no recent tasks", async () => {
    await render();
    expect(container.textContent).not.toContain("Recent Tasks");
    expect(container.textContent).not.toContain("Open or create a task");
  });

  it("renders refreshed task text and live state without shifting for a status icon", async () => {
    recordRecentTask({
      id: "issue-1",
      companyId: "company-1",
      title: "Initial title",
      identifier: "PAP-1",
      status: "todo",
      updatedAt: new Date(1),
    }, "user-1");
    mockIssuesApi.get.mockResolvedValue({
      id: "issue-1",
      companyId: "company-1",
      title: "Refreshed title",
      identifier: "PAP-1",
      status: "in_progress",
      hiddenAt: null,
      updatedAt: new Date(2),
    });

    const queryClient = await render();
    await act(async () => {
      for (let index = 0; index < 5; index += 1) {
        await Promise.resolve();
        await new Promise((resolve) => window.setTimeout(resolve, 0));
      }
    });

    const link = container.querySelector('a[href="/issues/issue-1"]');
    expect(mockIssuesApi.get).toHaveBeenCalledWith("issue-1");
    expect(queryClient.getQueryData(["issues", "detail", "issue-1"])).toMatchObject({
      title: "Refreshed title",
    });
    expect(link?.textContent).toContain("Refreshed title");
    expect(link?.textContent).toContain("1 live");
    expect(link?.querySelector('[aria-label="In Progress"]')).toBeNull();
    expect(link?.querySelector('[data-slot="recent-task-icon-spacer"]')).toBeNull();
    expect(link?.querySelector('[data-slot="sidebar-nav-icon"]')).toBeNull();
    expect(link?.firstElementChild?.textContent).toBe("Refreshed title");
    const actions = container.querySelector<HTMLButtonElement>(
      'button[aria-label="More actions for Refreshed title"]',
    );
    expect(actions).not.toBeNull();
    expect(actions?.className).toContain("opacity-0");
  });

  it("keeps rows stable during alternating activity and applies the final order after quiet", async () => {
    const tasks = [1, 2, 3].map((id) => ({
      id: `issue-${id}`,
      companyId: "company-1",
      title: `Task ${id}`,
      identifier: `PAP-${id}`,
      status: "done" as const,
      hiddenAt: null,
      updatedAt: new Date(id),
    }));
    tasks.forEach((task) => recordRecentTask(task, "user-1"));
    mockIssuesApi.get.mockImplementation(async (id: string) => tasks.find((task) => task.id === id));
    const queryClient = await render();
    const order = () => Array.from(container.querySelectorAll("a")).map((link) => link.getAttribute("href"));
    const originalOrder = ["/issues/issue-3", "/issues/issue-2", "/issues/issue-1"];
    expect(order()).toEqual(originalOrder);
    vi.useFakeTimers();

    for (let index = 0; index < 6; index += 1) {
      const task = tasks[index % 2]!;
      await act(async () => {
        queryClient.setQueryData(queryKeys.issues.detail(task.id), {
          ...task, title: `Updated ${task.id}`, updatedAt: new Date(100 + index),
        });
        await vi.advanceTimersByTimeAsync(0);
      });
      await act(async () => { await vi.advanceTimersByTimeAsync(500); });
      expect(order()).toEqual(originalOrder);
      expect(container.textContent).toContain(`Updated ${task.id}`);
    }

    await act(async () => { await vi.advanceTimersByTimeAsync(499); });
    expect(order()).toEqual(originalOrder);
    await act(async () => { await vi.advanceTimersByTimeAsync(1); });
    expect(order()).toEqual(["/issues/issue-2", "/issues/issue-1", "/issues/issue-3"]);
    expect(mockIssuesApi.get).toHaveBeenCalledTimes(3);
    queryClient.clear();
  });

  it("adds and removes tasks immediately while an activity reorder is pending", async () => {
    const task = (id: string, recordedAt: number) => ({
      id, companyId: "company-1", title: id, identifier: id,
      status: "todo" as const, updatedAt: new Date(recordedAt),
    });
    recordRecentTask(task("first", 1), "user-1");
    recordRecentTask(task("second", 2), "user-1");
    mockIssuesApi.get.mockImplementation(async (id: string) => task(id, 0));
    const queryClient = await render();
    vi.useFakeTimers();
    act(() => recordRecentTask(task("first", 3), "user-1"));
    expect(container.querySelector("a")?.getAttribute("href")).toBe("/issues/second");
    await act(async () => {
      recordRecentTask(task("new", 4), "user-1");
      await vi.advanceTimersByTimeAsync(0);
    });
    expect(container.querySelector("a")?.getAttribute("href")).toBe("/issues/new");
    act(() => pruneRecentTasks(getRecentTasksStorageKey("company-1", "user-1"), "company-1", new Set(["second"])));
    expect(container.querySelector('a[href="/issues/second"]')).toBeNull();
    await act(async () => { await vi.advanceTimersByTimeAsync(2_000); });
    expect(container.querySelector('a[href="/issues/second"]')).toBeNull();
    queryClient.clear();
  });

  it("opens the compact task actions menu from the ellipsis button", async () => {
    recordRecentTask({
      id: "issue-1",
      companyId: "company-1",
      title: "Menu task",
      identifier: "PAP-1",
      status: "todo",
      updatedAt: new Date(1),
    }, "user-1");
    mockIssuesApi.get.mockResolvedValue({
      id: "issue-1",
      companyId: "company-1",
      title: "Menu task",
      identifier: "PAP-1",
      status: "todo",
      hiddenAt: null,
      updatedAt: new Date(1),
    });

    await render();
    await openActions("Menu task");

    const menu = document.body.querySelector('[data-slot="dropdown-menu-content"]');
    expect(menu?.textContent).toContain("Rename");
    expect(menu?.textContent).toContain("Archive");
    expect(menu?.textContent).toContain("Pause/Restart");
  });

  it("keeps an idle Slack conversation in recent history and labels it Idle", async () => {
    const issue = {
      id: "issue-1", companyId: "company-1", title: "Slack conversation", identifier: "PAP-1",
      status: "in_review" as const, externalConversationState: "waiting" as const,
      updatedAt: new Date(1), hiddenAt: null,
    };
    recordRecentTask(issue, "user-1");
    mockIssuesApi.get.mockResolvedValue(issue);
    await render();
    expect(container.textContent).toContain("Slack conversation");
    expect(container.textContent).toContain("Idle");
  });

  it("archives a task from the inbox without hiding or removing the recent task", async () => {
    const issue = {
      id: "issue-1",
      companyId: "company-1",
      title: "Archive me",
      identifier: "PAP-1",
      status: "todo" as const,
      hiddenAt: null,
      updatedAt: new Date(1),
    };
    recordRecentTask(issue, "user-1");
    mockIssuesApi.get.mockResolvedValue(issue);
    mockIssuesApi.archiveFromInbox.mockResolvedValue({
      id: issue.id,
      archivedAt: new Date(2),
    });

    await render();
    await openActions("Archive me");
    await act(async () => {
      menuItem("Archive")?.dispatchEvent(new MouseEvent("click", { bubbles: true }));
      await Promise.resolve();
      await new Promise((resolve) => window.setTimeout(resolve, 0));
    });

    expect(mockIssuesApi.archiveFromInbox).toHaveBeenCalledWith("issue-1");
    expect(mockIssuesApi.update).not.toHaveBeenCalled();
    expect(container.textContent).toContain("Recent Tasks");
    expect(container.querySelector('a[href="/issues/issue-1"]')?.textContent).toContain(
      "Archive me",
    );
    expect(readRecentTasks(
      getRecentTasksStorageKey("company-1", "user-1"),
      "company-1",
    )).toHaveLength(1);
  });

  it("refreshes task activity after a rename", async () => {
    const issue = {
      id: "issue-1",
      companyId: "company-1",
      title: "Old title",
      identifier: "PAP-1",
      status: "todo" as const,
      hiddenAt: null,
      updatedAt: new Date(1),
    };
    const renamedIssue = { ...issue, title: "New title", updatedAt: new Date(2) };
    recordRecentTask(issue, "user-1");
    mockIssuesApi.get.mockResolvedValue(issue);
    mockIssuesApi.update.mockResolvedValue(renamedIssue);

    const queryClient = await render();
    const invalidateQueries = vi.spyOn(queryClient, "invalidateQueries");
    await openActions("Old title");
    await act(async () => {
      menuItem("Rename")?.dispatchEvent(new MouseEvent("click", { bubbles: true }));
      await Promise.resolve();
    });

    const input = document.body.querySelector<HTMLInputElement>('input[aria-label="Task name"]');
    expect(input).not.toBeNull();
    await act(async () => {
      setInputValue(input!, "New title");
      await Promise.resolve();
    });
    await act(async () => {
      input?.closest("form")?.dispatchEvent(new SubmitEvent("submit", { bubbles: true, cancelable: true }));
      await Promise.resolve();
      await new Promise((resolve) => window.setTimeout(resolve, 0));
    });

    expect(mockIssuesApi.update).toHaveBeenCalledWith("issue-1", { title: "New title" });
    expect(invalidateQueries).toHaveBeenCalledWith({
      queryKey: queryKeys.issues.activity("issue-1"),
    });
  });

  it("pauses a running task or restarts its active pause hold", async () => {
    const issue = {
      id: "issue-1",
      companyId: "company-1",
      title: "Toggle work",
      identifier: "PAP-1",
      status: "in_progress" as const,
      assigneeAgentId: "agent-1",
      hiddenAt: null,
      updatedAt: new Date(1),
    };
    recordRecentTask(issue, "user-1");
    mockIssuesApi.get.mockResolvedValue(issue);
    mockIssuesApi.getTreeControlState
      .mockResolvedValueOnce({ activePauseHold: null })
      .mockResolvedValueOnce({
        activePauseHold: {
          holdId: "hold-1",
          rootIssueId: "issue-1",
          issueId: "issue-1",
          isRoot: true,
          mode: "pause",
          reason: null,
          releasePolicy: { strategy: "manual" },
        },
      });
    mockIssuesApi.createTreeHold.mockResolvedValue({ hold: {}, preview: {} });
    mockIssuesApi.releaseTreeHold.mockResolvedValue({});
    mockAgentsApi.wakeup.mockResolvedValue({ id: "run-1" });

    await render();
    await openActions("Toggle work");
    await act(async () => {
      menuItem("Pause/Restart")?.dispatchEvent(new MouseEvent("click", { bubbles: true }));
      await Promise.resolve();
      await new Promise((resolve) => window.setTimeout(resolve, 0));
    });
    expect(mockIssuesApi.createTreeHold).toHaveBeenCalledWith("issue-1", {
      mode: "pause",
      reason: "Paused from Recent Tasks.",
      releasePolicy: { strategy: "manual" },
    });

    await openActions("Toggle work");
    await act(async () => {
      menuItem("Pause/Restart")?.dispatchEvent(new MouseEvent("click", { bubbles: true }));
      await Promise.resolve();
      await new Promise((resolve) => window.setTimeout(resolve, 0));
    });
    expect(mockIssuesApi.releaseTreeHold).toHaveBeenCalledWith("issue-1", "hold-1", {
      reason: "Restarted from Recent Tasks.",
    });
    expect(mockAgentsApi.wakeup).toHaveBeenCalledWith(
      "agent-1",
      {
        source: "assignment",
        triggerDetail: "manual",
        reason: "recent_task_restart",
        payload: { issueId: "issue-1" },
      },
      "company-1",
    );
  });

  it("retries only the wake after a remount when restart releases the hold before wakeup fails", async () => {
    const issue = {
      id: "issue-1",
      companyId: "company-1",
      title: "Retry restart",
      identifier: "PAP-1",
      status: "in_progress" as const,
      assigneeAgentId: "agent-1",
      hiddenAt: null,
      updatedAt: new Date(1),
    };
    recordRecentTask(issue, "user-1");
    mockIssuesApi.get.mockResolvedValue(issue);
    mockIssuesApi.getTreeControlState
      .mockResolvedValueOnce({
        activePauseHold: {
          holdId: "hold-1",
          rootIssueId: "issue-1",
          issueId: "issue-1",
          isRoot: true,
          mode: "pause",
          reason: null,
          releasePolicy: { strategy: "manual" },
        },
      })
      .mockResolvedValueOnce({ activePauseHold: null });
    mockIssuesApi.releaseTreeHold.mockResolvedValue({});
    mockAgentsApi.wakeup
      .mockRejectedValueOnce(new Error("Wake failed"))
      .mockResolvedValueOnce({ id: "run-1" });

    await render();
    await openActions("Retry restart");
    await act(async () => {
      menuItem("Pause/Restart")?.dispatchEvent(new MouseEvent("click", { bubbles: true }));
      await Promise.resolve();
      await new Promise((resolve) => window.setTimeout(resolve, 0));
    });

    await act(async () => root.unmount());
    root = createRoot(container);
    await render();

    await openActions("Retry restart");
    await act(async () => {
      menuItem("Pause/Restart")?.dispatchEvent(new MouseEvent("click", { bubbles: true }));
      await Promise.resolve();
      await new Promise((resolve) => window.setTimeout(resolve, 0));
    });

    expect(mockIssuesApi.releaseTreeHold).toHaveBeenCalledTimes(1);
    expect(mockIssuesApi.createTreeHold).not.toHaveBeenCalled();
    expect(mockAgentsApi.wakeup).toHaveBeenCalledTimes(2);
    expect(mockAgentsApi.wakeup).toHaveBeenLastCalledWith(
      "agent-1",
      {
        source: "assignment",
        triggerDetail: "manual",
        reason: "recent_task_restart_retry",
        payload: { issueId: "issue-1" },
      },
      "company-1",
    );
  });

  it("synchronizes recent tasks written by another tab", async () => {
    mockIssuesApi.get.mockImplementation(() => new Promise(() => {}));
    await render();
    const storageKey = getRecentTasksStorageKey("company-1", "user-1");
    const entries = [{
      id: "issue-2",
      companyId: "company-1",
      title: "Cross-tab task",
      identifier: "PAP-2",
      status: "todo" as const,
      recordedAt: 2,
    }];

    await act(async () => {
      window.localStorage.setItem(storageKey, JSON.stringify(entries));
      window.dispatchEvent(new StorageEvent("storage", { key: storageKey }));
      await Promise.resolve();
    });

    expect(container.querySelector('a[href="/issues/issue-2"]')?.textContent).toContain("Cross-tab task");
  });

  it("preserves pending restart wake retries from before the snapshot storage migration", async () => {
    const issue = {
      id: "issue-1", companyId: "company-1", title: "Retry after upgrade", identifier: "PAP-1",
      status: "in_progress" as const, assigneeAgentId: "agent-1", hiddenAt: null, updatedAt: new Date(1),
    };
    window.localStorage.setItem("paperclip.recentTasks:company-1:user-1", JSON.stringify([{ ...issue, recordedAt: 1 }]));
    window.localStorage.setItem("paperclip.recentTasks:company-1:user-1:restart-wake-retry", JSON.stringify([issue.id]));
    mockIssuesApi.get.mockResolvedValue(issue);
    mockIssuesApi.getTreeControlState.mockResolvedValue({ activePauseHold: null });
    mockAgentsApi.wakeup.mockResolvedValue({ id: "run-1" });

    await render();
    await openActions("Retry after upgrade");
    await act(async () => {
      menuItem("Pause/Restart")?.dispatchEvent(new MouseEvent("click", { bubbles: true }));
      await Promise.resolve();
      await new Promise((resolve) => window.setTimeout(resolve, 0));
    });

    expect(mockIssuesApi.createTreeHold).not.toHaveBeenCalled();
    expect(mockIssuesApi.releaseTreeHold).not.toHaveBeenCalled();
    expect(mockAgentsApi.wakeup).toHaveBeenCalledWith("agent-1", expect.objectContaining({
      reason: "recent_task_restart_retry",
    }), "company-1");
    expect(window.localStorage.getItem("paperclip.recentTasks:company-1:user-1:restart-wake-retry")).toBeNull();
  });

  it("prunes tasks that become hidden", async () => {
    recordRecentTask({
      id: "issue-hidden",
      companyId: "company-1",
      title: "Hidden task",
      identifier: "PAP-3",
      status: "todo",
      updatedAt: new Date(3),
    }, "user-1");
    mockIssuesApi.get.mockResolvedValue({
      id: "issue-hidden",
      companyId: "company-1",
      title: "Hidden task",
      identifier: "PAP-3",
      status: "todo",
      hiddenAt: new Date(),
      updatedAt: new Date(4),
    });

    await render();
    await act(async () => {
      await Promise.resolve();
      await new Promise((resolve) => window.setTimeout(resolve, 0));
    });

    expect(container.querySelector('a[href="/issues/issue-hidden"]')).toBeNull();
    expect(readRecentTasks(
      getRecentTasksStorageKey("company-1", "user-1"),
      "company-1",
    )).toEqual([]);
  });
});