/**
 * IssueTable Component Tests
 */

import { render, screen } from '@testing-library/react';
import userEvent from '@testing-library/user-event';
import { IssueTable } from '@/features/issues/components/IssueTable';
import type { IssueSummary, IssueSort } from '@/features/issues/types';

const mockIssues: IssueSummary[] = [
  {
    id: 'issue-1',
    number: 42,
    title: 'Test Issue 1',
    description: 'Description 1',
    status: 'open',
    priority: 'high',
    labels: ['bug', 'frontend'],
    sprint: 'Sprint 1',
    assignee: { id: 'user-1', name: 'Test User', type: 'human' },
    created_at: '2025-01-01T00:00:00Z',
    updated_at: '2025-01-02T00:00:00Z',
    sync_status: 'synced',
  },
  {
    id: 'issue-2',
    number: 43,
    title: 'Test Issue 2',
    description: 'Description 2',
    status: 'in_progress',
    priority: 'medium',
    labels: ['feature'],
    sprint: null,
    assignee: null,
    created_at: '2025-01-02T00:00:00Z',
    updated_at: '2025-01-03T00:00:00Z',
    sync_status: 'pending',
  },
];

describe('IssueTable', () => {
  const defaultSort: IssueSort = { field: 'number', direction: 'asc' };
  const mockOnSelectionChange = jest.fn();
  const mockOnIssueClick = jest.fn();
  const mockOnSortChange = jest.fn();

  beforeEach(() => {
    mockOnSelectionChange.mockClear();
    mockOnIssueClick.mockClear();
    mockOnSortChange.mockClear();
  });

  it('renders issue rows', () => {
    render(
      <IssueTable
        issues={mockIssues}
        selectedIssues={[]}
        onSelectionChange={mockOnSelectionChange}
        onIssueClick={mockOnIssueClick}
        sort={defaultSort}
        onSortChange={mockOnSortChange}
      />
    );

    expect(screen.getByText('Test Issue 1')).toBeInTheDocument();
    expect(screen.getByText('Test Issue 2')).toBeInTheDocument();
  });

  it('displays issue numbers', () => {
    render(
      <IssueTable
        issues={mockIssues}
        selectedIssues={[]}
        onSelectionChange={mockOnSelectionChange}
        onIssueClick={mockOnIssueClick}
        sort={defaultSort}
        onSortChange={mockOnSortChange}
      />
    );

    expect(screen.getByText('42')).toBeInTheDocument();
    expect(screen.getByText('43')).toBeInTheDocument();
  });

  it('shows labels for issues', () => {
    render(
      <IssueTable
        issues={mockIssues}
        selectedIssues={[]}
        onSelectionChange={mockOnSelectionChange}
        onIssueClick={mockOnIssueClick}
        sort={defaultSort}
        onSortChange={mockOnSortChange}
      />
    );

    expect(screen.getByText('bug')).toBeInTheDocument();
    expect(screen.getByText('frontend')).toBeInTheDocument();
    expect(screen.getByText('feature')).toBeInTheDocument();
  });

  it('calls onIssueClick when row is clicked', async () => {
    const user = userEvent.setup();
    render(
      <IssueTable
        issues={mockIssues}
        selectedIssues={[]}
        onSelectionChange={mockOnSelectionChange}
        onIssueClick={mockOnIssueClick}
        sort={defaultSort}
        onSortChange={mockOnSortChange}
      />
    );

    const row = screen.getByTestId('issue-row-issue-1');
    await user.click(row);

    expect(mockOnIssueClick).toHaveBeenCalledWith('issue-1');
  });

  it('handles issue selection', async () => {
    const user = userEvent.setup();
    render(
      <IssueTable
        issues={mockIssues}
        selectedIssues={[]}
        onSelectionChange={mockOnSelectionChange}
        onIssueClick={mockOnIssueClick}
        sort={defaultSort}
        onSortChange={mockOnSortChange}
      />
    );

    // Find checkbox for first issue
    const checkbox = screen.getByRole('checkbox', { name: /select issue 42/i });
    await user.click(checkbox);

    expect(mockOnSelectionChange).toHaveBeenCalledWith(['issue-1']);
  });

  it('handles select all', async () => {
    const user = userEvent.setup();
    render(
      <IssueTable
        issues={mockIssues}
        selectedIssues={[]}
        onSelectionChange={mockOnSelectionChange}
        onIssueClick={mockOnIssueClick}
        sort={defaultSort}
        onSortChange={mockOnSortChange}
      />
    );

    // Find select all checkbox
    const selectAllCheckbox = screen.getByRole('checkbox', { name: /select all issues/i });
    await user.click(selectAllCheckbox);

    expect(mockOnSelectionChange).toHaveBeenCalledWith(['issue-1', 'issue-2']);
  });

  it('handles deselect all when all selected', async () => {
    const user = userEvent.setup();
    render(
      <IssueTable
        issues={mockIssues}
        selectedIssues={['issue-1', 'issue-2']}
        onSelectionChange={mockOnSelectionChange}
        onIssueClick={mockOnIssueClick}
        sort={defaultSort}
        onSortChange={mockOnSortChange}
      />
    );

    // Find deselect all checkbox
    const selectAllCheckbox = screen.getByRole('checkbox', { name: /deselect all issues/i });
    await user.click(selectAllCheckbox);

    expect(mockOnSelectionChange).toHaveBeenCalledWith([]);
  });

  it('handles sorting by number', async () => {
    const user = userEvent.setup();
    render(
      <IssueTable
        issues={mockIssues}
        selectedIssues={[]}
        onSelectionChange={mockOnSelectionChange}
        onIssueClick={mockOnIssueClick}
        sort={defaultSort}
        onSortChange={mockOnSortChange}
      />
    );

    // Click the # column header
    const numberHeader = screen.getByRole('button', { name: /#/i });
    await user.click(numberHeader);

    expect(mockOnSortChange).toHaveBeenCalled();
  });

  it('handles sorting by priority', async () => {
    const user = userEvent.setup();
    render(
      <IssueTable
        issues={mockIssues}
        selectedIssues={[]}
        onSelectionChange={mockOnSelectionChange}
        onIssueClick={mockOnIssueClick}
        sort={defaultSort}
        onSortChange={mockOnSortChange}
      />
    );

    // Click the Priority column header
    const priorityHeader = screen.getByRole('button', { name: /priority/i });
    await user.click(priorityHeader);

    expect(mockOnSortChange).toHaveBeenCalledWith({ field: 'priority', direction: 'desc' });
  });

  it('shows empty state when no issues', () => {
    render(
      <IssueTable
        issues={[]}
        selectedIssues={[]}
        onSelectionChange={mockOnSelectionChange}
        onIssueClick={mockOnIssueClick}
        sort={defaultSort}
        onSortChange={mockOnSortChange}
      />
    );

    expect(screen.getByText('No issues found')).toBeInTheDocument();
    expect(screen.getByText('Try adjusting your search or filters')).toBeInTheDocument();
  });

  it('shows unassigned text for issues without assignee', () => {
    render(
      <IssueTable
        issues={mockIssues}
        selectedIssues={[]}
        onSelectionChange={mockOnSelectionChange}
        onIssueClick={mockOnIssueClick}
        sort={defaultSort}
        onSortChange={mockOnSortChange}
      />
    );

    expect(screen.getByText('Unassigned')).toBeInTheDocument();
  });

  it('shows backlog text for issues without sprint', () => {
    render(
      <IssueTable
        issues={mockIssues}
        selectedIssues={[]}
        onSelectionChange={mockOnSelectionChange}
        onIssueClick={mockOnIssueClick}
        sort={defaultSort}
        onSortChange={mockOnSortChange}
      />
    );

    expect(screen.getByText('Backlog')).toBeInTheDocument();
  });
});