import React, { act } from 'react';
import { createRoot } from 'react-dom/client';
import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest';

import { MemberMessagesTab } from '@renderer/components/team/members/MemberMessagesTab';
import { useStore } from '@renderer/store';

import type { InboxMessage, ResolvedTeamMember, TeamTaskWithKanban } from '@shared/types';

const getMessagesPage = vi.fn();

vi.mock('@renderer/api', () => ({
  api: {
    teams: {
      getMessagesPage: (...args: unknown[]) => getMessagesPage(...args),
    },
  },
}));

vi.mock('@renderer/components/team/activity/ActivityItem', () => ({
  ActivityItem: ({ message }: { message: InboxMessage }) =>
    React.createElement(
      'div',
      {
        'data-testid': 'activity-item',
        'data-kind': message.messageKind ?? 'message',
      },
      `${message.messageKind ?? 'message'}:${message.summary ?? message.text ?? ''}`
    ),
}));

vi.mock('@renderer/components/team/activity/MessageExpandDialog', () => ({
  MessageExpandDialog: () => null,
}));

vi.mock('@renderer/hooks/useTeamMessagesRead', () => ({
  useTeamMessagesRead: () => ({
    readSet: new Set<string>(),
    markRead: vi.fn(),
    markAllRead: vi.fn(),
  }),
}));

describe('MemberMessagesTab', () => {
  beforeEach(() => {
    vi.stubGlobal('IS_REACT_ACT_ENVIRONMENT', true);
    getMessagesPage.mockResolvedValue({
      messages: [],
      nextCursor: null,
      hasMore: false,
    });
    useStore.setState({
      teamMessagesByName: {
        'demo-team': {
          canonicalMessages: [],
          optimisticMessages: [],
          feedRevision: 'rev-empty',
          nextCursor: null,
          hasMore: false,
          lastFetchedAt: null,
          loadingHead: false,
          loadingOlder: false,
          headHydrated: true,
        },
      },
    } as never);
  });

  afterEach(() => {
    document.body.innerHTML = '';
    getMessagesPage.mockReset();
    useStore.setState({ teamMessagesByName: {} } as never);
  });

  it('shows both messages and comments by default and filters them separately', async () => {
    const members: ResolvedTeamMember[] = [
      {
        name: 'lead',
        status: 'active',
        currentTaskId: null,
        taskCount: 0,
        lastActiveAt: null,
        messageCount: 0,
        agentType: 'lead',
      },
      {
        name: 'jack',
        status: 'active',
        currentTaskId: null,
        taskCount: 1,
        lastActiveAt: null,
        messageCount: 0,
      },
    ];
    const messages: InboxMessage[] = [
      {
        from: 'lead',
        to: 'jack',
        text: 'New task assigned',
        summary: 'New task assigned',
        timestamp: '2026-04-13T13:34:00.000Z',
        read: false,
        messageId: 'msg-1',
      },
    ];
    const tasks: TeamTaskWithKanban[] = [
      {
        id: 'task-1',
        displayId: '#8fdd6803',
        subject: 'Review contributor notes',
        owner: 'jack',
        status: 'in_progress',
        comments: [
          {
            id: 'comment-1',
            author: 'jack',
            text: 'Короткий отчёт по contributor pass',
            createdAt: '2026-04-13T13:35:00.000Z',
            type: 'regular',
          },
        ],
        reviewState: 'none',
      } as TeamTaskWithKanban,
    ];

    const host = document.createElement('div');
    document.body.appendChild(host);
    const root = createRoot(host);

    useStore.setState({
      teamMessagesByName: {
        'demo-team': {
          canonicalMessages: messages,
          optimisticMessages: [],
          feedRevision: 'rev-1',
          nextCursor: null,
          hasMore: false,
          lastFetchedAt: Date.now(),
          loadingHead: false,
          loadingOlder: false,
          headHydrated: true,
        },
      },
    } as never);

    await act(async () => {
      root.render(
        React.createElement(MemberMessagesTab, {
          teamName: 'demo-team',
          memberName: 'jack',
          members,
          tasks,
        })
      );
      await Promise.resolve();
    });

    expect(getMessagesPage).not.toHaveBeenCalled();

    const getRenderedKinds = () =>
      Array.from(host.querySelectorAll('[data-testid="activity-item"]')).map((node) =>
        node.getAttribute('data-kind')
      );

    expect(getRenderedKinds()).toEqual(['task_comment_notification', 'message']);

    const messagesButton = Array.from(host.querySelectorAll('button')).find(
      (button) => button.textContent?.trim() === 'Messages'
    );
    expect(messagesButton).not.toBeUndefined();

    await act(async () => {
      messagesButton?.dispatchEvent(new MouseEvent('click', { bubbles: true }));
      await Promise.resolve();
    });

    expect(getRenderedKinds()).toEqual(['message']);

    const commentsButton = Array.from(host.querySelectorAll('button')).find(
      (button) => button.textContent?.trim() === 'Comments'
    );
    expect(commentsButton).not.toBeUndefined();

    await act(async () => {
      commentsButton?.dispatchEvent(new MouseEvent('click', { bubbles: true }));
      await Promise.resolve();
    });

    expect(getRenderedKinds()).toEqual(['task_comment_notification']);

    await act(async () => {
      root.unmount();
      await Promise.resolve();
    });
  });

  it('shows load older messages when older pages may still contain this member activity', async () => {
    getMessagesPage.mockResolvedValue({
      messages: [
        {
          from: 'lead',
          to: 'alice',
          text: 'Message for another member',
          summary: 'Message for another member',
          timestamp: '2026-04-13T13:34:00.000Z',
          read: false,
          messageId: 'msg-other-member',
        },
      ],
      nextCursor: 'older-cursor',
      hasMore: true,
    });

    const members: ResolvedTeamMember[] = [
      {
        name: 'lead',
        status: 'active',
        currentTaskId: null,
        taskCount: 0,
        lastActiveAt: null,
        messageCount: 0,
        agentType: 'lead',
      },
      {
        name: 'jack',
        status: 'active',
        currentTaskId: null,
        taskCount: 0,
        lastActiveAt: null,
        messageCount: 0,
      },
      {
        name: 'alice',
        status: 'active',
        currentTaskId: null,
        taskCount: 0,
        lastActiveAt: null,
        messageCount: 0,
      },
    ];

    const host = document.createElement('div');
    document.body.appendChild(host);
    const root = createRoot(host);

    useStore.setState({
      teamMessagesByName: {
        'demo-team': {
          canonicalMessages: [
            {
              from: 'lead',
              to: 'alice',
              text: 'Message for another member',
              summary: 'Message for another member',
              timestamp: '2026-04-13T13:34:00.000Z',
              read: false,
              messageId: 'msg-other-member',
            },
          ],
          optimisticMessages: [],
          feedRevision: 'rev-older',
          nextCursor: 'older-cursor',
          hasMore: true,
          lastFetchedAt: Date.now(),
          loadingHead: false,
          loadingOlder: false,
          headHydrated: true,
        },
      },
    } as never);

    await act(async () => {
      root.render(
        React.createElement(MemberMessagesTab, {
          teamName: 'demo-team',
          memberName: 'jack',
          members,
          tasks: [],
        })
      );
      await Promise.resolve();
    });

    expect(getMessagesPage).not.toHaveBeenCalled();
    expect(host.textContent).toContain('No loaded activity for this member yet');
    expect(host.textContent).toContain('Load older messages');

    await act(async () => {
      root.unmount();
      await Promise.resolve();
    });
  });
});
