/**
 * PendingApprovals Component Tests
 */

import { render, screen, fireEvent } from '@testing-library/react';
import { PendingApprovals } from '@/components/dashboard/PendingApprovals';
import type { PendingApproval } from '@/lib/api/hooks/useDashboard';

// Mock next-intl navigation
jest.mock('@/lib/i18n/routing', () => ({
  Link: ({ children, href }: { children: React.ReactNode; href: string }) => (
    <a href={href}>{children}</a>
  ),
}));

describe('PendingApprovals', () => {
  const mockApprovals: PendingApproval[] = [
    {
      id: 'approval-1',
      type: 'sprint_boundary',
      title: 'Sprint 3 Completion',
      description: 'Review sprint deliverables',
      projectId: 'proj-1',
      projectName: 'E-Commerce Platform',
      requestedBy: 'Product Owner Agent',
      requestedAt: new Date().toISOString(),
      priority: 'high',
    },
    {
      id: 'approval-2',
      type: 'code_review',
      title: 'PR #123 Review',
      description: 'Authentication module changes',
      projectId: 'proj-2',
      projectName: 'Banking App',
      requestedBy: 'Developer Agent',
      requestedAt: new Date().toISOString(),
      priority: 'medium',
    },
  ];

  it('renders approval items', () => {
    render(<PendingApprovals approvals={mockApprovals} />);

    expect(screen.getByText('Sprint 3 Completion')).toBeInTheDocument();
    expect(screen.getByText('PR #123 Review')).toBeInTheDocument();
  });

  it('displays section header with count', () => {
    render(<PendingApprovals approvals={mockApprovals} />);

    expect(screen.getByText('Pending Approvals')).toBeInTheDocument();
    expect(screen.getByText('2')).toBeInTheDocument();
  });

  it('displays approval descriptions', () => {
    render(<PendingApprovals approvals={mockApprovals} />);

    expect(screen.getByText('Review sprint deliverables')).toBeInTheDocument();
    expect(screen.getByText('Authentication module changes')).toBeInTheDocument();
  });

  it('displays project names with links', () => {
    render(<PendingApprovals approvals={mockApprovals} />);

    const projectLink = screen.getByRole('link', { name: 'E-Commerce Platform' });
    expect(projectLink).toHaveAttribute('href', '/projects/proj-1');
  });

  it('displays requestor information', () => {
    render(<PendingApprovals approvals={mockApprovals} />);

    expect(screen.getByText(/Product Owner Agent/)).toBeInTheDocument();
    expect(screen.getByText(/Developer Agent/)).toBeInTheDocument();
  });

  it('displays priority badges', () => {
    render(<PendingApprovals approvals={mockApprovals} />);

    expect(screen.getByText('High')).toBeInTheDocument();
    expect(screen.getByText('Medium')).toBeInTheDocument();
  });

  it('calls onApprove when Approve button clicked', () => {
    const onApprove = jest.fn();
    render(<PendingApprovals approvals={mockApprovals} onApprove={onApprove} />);

    const approveButtons = screen.getAllByRole('button', { name: /Approve/i });
    fireEvent.click(approveButtons[0]);

    expect(onApprove).toHaveBeenCalledWith(mockApprovals[0]);
  });

  it('calls onReject when Reject button clicked', () => {
    const onReject = jest.fn();
    render(<PendingApprovals approvals={mockApprovals} onReject={onReject} />);

    const rejectButtons = screen.getAllByRole('button', { name: /Reject/i });
    fireEvent.click(rejectButtons[0]);

    expect(onReject).toHaveBeenCalledWith(mockApprovals[0]);
  });

  it('does not render when no approvals and not loading', () => {
    const { container } = render(<PendingApprovals approvals={[]} />);

    expect(container.firstChild).toBeNull();
  });

  it('shows loading skeletons when isLoading is true', () => {
    render(<PendingApprovals isLoading />);

    expect(screen.getByText('Pending Approvals')).toBeInTheDocument();
  });

  it('applies custom className', () => {
    const { container } = render(
      <PendingApprovals approvals={mockApprovals} className="custom-class" />
    );

    expect(container.firstChild).toHaveClass('custom-class');
  });
});