import { StrictMode } from 'react';
import { render, screen } from '@testing-library/react';
import userEvent from '@testing-library/user-event';
import '@testing-library/jest-dom';

import { Nav, NavContext } from '../Nav';
import { NavList } from '../NavList';
import { NavGroup } from '../NavGroup';
import { NavItem } from '../NavItem';
import { NavExpandable } from '../NavExpandable';

import styles from '@patternfly/react-styles/css/components/Nav/nav';

const props = {
  items: [
    { to: '#link1', label: 'Link 1' },
    { to: '#link2', label: 'Link 2' },
    { to: '#link3', label: 'Link 3' },
    { to: '#link4', label: 'Link 4' }
  ]
};

const renderNav = (ui: React.ReactElement<any, string | React.JSXElementConstructor<any>>) =>
  render(<NavContext.Provider value={{ onSelect: jest.fn(), onToggle: jest.fn() }}>{ui}</NavContext.Provider>);

describe('Nav', () => {
  beforeEach(() => {
    window.location.hash = '#link1';
  });

  test('Default Nav List', () => {
    const { asFragment } = renderNav(
      <Nav className="test-nav-class">
        <NavList className="test-nav-list-class">
          {props.items.map((item) => (
            <NavItem to={item.to} key={item.to} className="test-nav-item-class">
              {item.label}
            </NavItem>
          ))}
        </NavList>
      </Nav>
    );
    expect(asFragment()).toMatchSnapshot();
  });

  test('Renders nav list in strict mode', () => {
    const consoleError = jest.spyOn(console, 'error');
    const { asFragment } = renderNav(
      <StrictMode>
        <Nav className="test-nav-class">
          <NavList className="test-nav-list-class">
            {props.items.map((item) => (
              <NavItem to={item.to} key={item.to} className="test-nav-item-class">
                {item.label}
              </NavItem>
            ))}
          </NavList>
        </Nav>
      </StrictMode>
    );
    expect(consoleError).not.toHaveBeenCalled();
    expect(asFragment()).toMatchSnapshot();
  });

  test('Default Nav List - Trigger item active update', async () => {
    const user = userEvent.setup();

    const { asFragment } = renderNav(
      <Nav>
        <NavList>
          {props.items.map((item) => (
            <NavItem to={item.to} key={item.to}>
              {item.label}
            </NavItem>
          ))}
        </NavList>
      </Nav>
    );

    await user.click(screen.getByText('Link 2'));
    expect(asFragment()).toMatchSnapshot();
  });

  test('Expandable Nav List', () => {
    const { asFragment } = renderNav(
      <Nav>
        <NavList>
          <NavExpandable id="grp-1" title="Section 1">
            {props.items.map((item) => (
              <NavItem to={item.to} key={item.to}>
                {item.label}
              </NavItem>
            ))}
          </NavExpandable>
        </NavList>
      </Nav>
    );
    expect(asFragment()).toMatchSnapshot();
  });

  test('Expandable Nav verify onExpand', async () => {
    const onExpand = jest.fn();
    const user = userEvent.setup();

    renderNav(
      <Nav>
        <NavList>
          <NavExpandable id="grp-1" title="Section 1" onExpand={onExpand}>
            {props.items.map((item) => (
              <NavItem to={item.to} key={item.to}>
                {item.label}
              </NavItem>
            ))}
          </NavExpandable>
        </NavList>
      </Nav>
    );

    await user.click(screen.getByRole('button'));
    expect(onExpand).toHaveBeenCalled();
  });

  test('Expandable Nav List - Trigger toggle', async () => {
    window.location.hash = '#link2';
    const user = userEvent.setup();

    const { asFragment } = renderNav(
      <Nav>
        <NavList>
          <NavExpandable id="grp-1" title="Section 1" className="expandable-group" isExpanded>
            {props.items.map((item) => (
              <NavItem to={item.to} key={item.to}>
                {item.label}
              </NavItem>
            ))}
          </NavExpandable>
        </NavList>
      </Nav>
    );

    await user.click(screen.getByText('Section 1'));
    expect(asFragment()).toMatchSnapshot();
  });

  test('Expandable Nav List with aria label', () => {
    const { asFragment } = renderNav(
      <Nav aria-label="Test">
        <NavList>
          <NavExpandable id="grp-1" title="Section 1" srText="Section 1 - Example sub-navigation">
            {props.items.map((item) => (
              <NavItem to={item.to} key={item.to}>
                {item.label}
              </NavItem>
            ))}
          </NavExpandable>
        </NavList>
      </Nav>
    );
    expect(asFragment()).toMatchSnapshot();
  });

  test('Nav Grouped List', () => {
    const { asFragment } = renderNav(
      <Nav>
        <NavGroup id="grp-1" title="Section 1">
          <NavList>
            {props.items.map((item) => (
              <NavItem to={item.to} key={`section1_${item.to}`}>
                {item.label}
              </NavItem>
            ))}
          </NavList>
        </NavGroup>
        <NavGroup id="grp-2" title="Section 2">
          <NavList>
            {props.items.map((item) => (
              <NavItem to={item.to} key={`section2_${item.to}`}>
                {item.label}
              </NavItem>
            ))}
          </NavList>
        </NavGroup>
      </Nav>
    );
    expect(asFragment()).toMatchSnapshot();
  });

  test('Horizontal Nav List', () => {
    const { asFragment } = renderNav(
      <Nav variant="horizontal">
        <NavList>
          {props.items.map((item) => (
            <NavItem to={item.to} key={item.to}>
              {item.label}
            </NavItem>
          ))}
        </NavList>
      </Nav>
    );
    expect(asFragment()).toMatchSnapshot();
  });

  test('Horizontal SubNav List', () => {
    const { asFragment } = renderNav(
      <Nav variant="horizontal-subnav">
        <NavList>
          {props.items.map((item) => (
            <NavItem to={item.to} key={item.to}>
              {item.label}
            </NavItem>
          ))}
        </NavList>
      </Nav>
    );
    expect(asFragment()).toMatchSnapshot();
  });

  test('Nav List with custom item nodes', () => {
    const { asFragment } = renderNav(
      <Nav>
        <NavList>
          <NavItem to="/components/nav#link1" className="test-nav-item-class">
            <div className="my-custom-node">My custom node</div>
          </NavItem>
        </NavList>
      </Nav>
    );
    expect(asFragment()).toMatchSnapshot();
  });

  test('Nav List with flyout', async () => {
    const user = userEvent.setup();

    const { asFragment } = renderNav(
      <Nav>
        <NavList>
          <NavItem className="test-nav-item-class" flyout={<div>Flyout test</div>}>
            <div className="my-custom-node">My custom node</div>
          </NavItem>
        </NavList>
      </Nav>
    );

    await user.hover(screen.getByText('My custom node'));
    expect(asFragment()).toMatchSnapshot();
  });

  test('Nav with icon', () => {
    renderNav(
      <Nav>
        <NavList className="test-nav-icon">
          {props.items.map((item) => (
            <NavItem to={item.to} key={item.to} icon={<span>this is an icon</span>} className="test-nav-item-class">
              {item.label}
            </NavItem>
          ))}
        </NavList>
      </Nav>
    );
    expect(screen.getAllByText('this is an icon')[0].parentElement).toHaveClass(styles.navLinkIcon);
  });

  test(`Renders with ${styles.modifiers.docked} class when variant is docked`, () => {
    renderNav(
      <Nav variant="docked" data-testid="docked-nav">
        <NavList>
          {props.items.map((item) => (
            <NavItem to={item.to} key={item.to}>
              {item.label}
            </NavItem>
          ))}
        </NavList>
      </Nav>
    );
    expect(screen.getByTestId('docked-nav')).toHaveClass(styles.modifiers.docked);
  });

  test(`Renders with ${styles.modifiers.textExpanded} class when isTextExpanded is true and variant is docked`, () => {
    renderNav(
      <Nav isTextExpanded variant="docked" data-testid="text-expanded-nav">
        <NavList>
          {props.items.map((item) => (
            <NavItem to={item.to} key={item.to}>
              {item.label}
            </NavItem>
          ))}
        </NavList>
      </Nav>
    );
    expect(screen.getByTestId('text-expanded-nav')).toHaveClass(styles.modifiers.textExpanded);
  });

  test(`Does not render with ${styles.modifiers.textExpanded} class when isTextExpanded is not passed`, () => {
    renderNav(
      <Nav data-testid="nav">
        <NavList>
          {props.items.map((item) => (
            <NavItem to={item.to} key={item.to}>
              {item.label}
            </NavItem>
          ))}
        </NavList>
      </Nav>
    );
    expect(screen.getByTestId('nav')).not.toHaveClass(styles.modifiers.textExpanded);
  });

  test(`Does not render with ${styles.modifiers.textExpanded} class when isTextExpanded is true but variant is not docked`, () => {
    renderNav(
      <Nav isTextExpanded data-testid="nav">
        <NavList>
          {props.items.map((item) => (
            <NavItem to={item.to} key={item.to}>
              {item.label}
            </NavItem>
          ))}
        </NavList>
      </Nav>
    );
    expect(screen.getByTestId('nav')).not.toHaveClass(styles.modifiers.textExpanded);
  });
});