import { render, screen } from '@testing-library/react';
import {
  cloneElement,
  createElement,
  createRef,
  type HTMLAttributes,
  type ReactElement,
} from 'react';
import { renderToString } from 'react-dom/server';
import {
  afterEach,
  beforeEach,
  describe,
  expect,
  it,
  type MockInstance,
  vi,
} from 'vitest';

import { ThemeProvider } from '@ui/theme-constants/ThemeProvider';
import { isDefined } from '@ui/utilities/utils/isDefined';

import { type ComponentConformanceCase } from './types/ComponentConformanceCase';
import { type ComponentConformanceOptions } from './types/ComponentConformanceOptions';
import { hideGlobals } from './utils/hideGlobals';

const CONFORMANCE_TEST_ID = 'conformance-root';
const CONFORMANCE_CLASS_NAME = 'conformance-consumer-class';
const CONFORMANCE_RENDER_CLASS_NAME = 'conformance-render-class';
const CONFORMANCE_DATA_ATTRIBUTE_VALUE = 'conformance-data-value';
const CONFORMANCE_ARIA_LABEL = 'conformance-aria-label';
const CONFORMANCE_STYLE = { marginTop: '7px' };
const SERVER_HIDDEN_GLOBALS = [
  'window',
  'document',
  'navigator',
  'CSS',
  'Node',
  'Element',
  'HTMLElement',
] as const;

export const runComponentConformance = ({
  name,
  element,
  refInstanceOf,
  wrapper: Wrapper,
  ownClassName,
  renderPropTagName = 'span',
  skip = [],
}: ComponentConformanceOptions) => {
  const compose = (probeProps: Record<string, unknown>): ReactElement => {
    const probe = cloneElement(element, {
      'data-testid': CONFORMANCE_TEST_ID,
      ...probeProps,
    });

    return (
      <ThemeProvider colorScheme="light">
        {isDefined(Wrapper) ? <Wrapper>{probe}</Wrapper> : probe}
      </ThemeProvider>
    );
  };

  const itUnlessSkipped = (
    conformanceCase: ComponentConformanceCase,
    title: string,
    run: () => void,
  ) => {
    const register = skip.includes(conformanceCase) ? it.skip : it;

    register(title, run);
  };

  describe(`${name} conformance`, () => {
    let consoleErrorSpy: MockInstance;
    let consoleWarnSpy: MockInstance;

    beforeEach(() => {
      consoleErrorSpy = vi
        .spyOn(console, 'error')
        .mockImplementation(() => undefined);
      consoleWarnSpy = vi
        .spyOn(console, 'warn')
        .mockImplementation(() => undefined);
    });

    afterEach(() => {
      consoleErrorSpy.mockRestore();
      consoleWarnSpy.mockRestore();
    });

    itUnlessSkipped(
      'consoleErrorsAndWarnings',
      'renders without console errors or warnings',
      () => {
        render(compose({}));

        expect(consoleErrorSpy).not.toHaveBeenCalled();
        expect(consoleWarnSpy).not.toHaveBeenCalled();
      },
    );

    itUnlessSkipped('ref', 'forwards ref to the root DOM node', () => {
      const ref = createRef<Element>();

      render(compose({ ref }));

      expect(ref.current).toBeInstanceOf(refInstanceOf);
      expect(ref.current).toBe(screen.getByTestId(CONFORMANCE_TEST_ID));
    });

    itUnlessSkipped('ref', 'cleans up callback refs on unmount', () => {
      const cleanup = vi.fn();
      const ref = vi.fn(() => cleanup);
      const { unmount } = render(compose({ ref }));

      expect(ref).toHaveBeenCalledWith(screen.getByTestId(CONFORMANCE_TEST_ID));
      expect(cleanup).toHaveBeenCalledTimes(ref.mock.calls.length - 1);

      unmount();

      expect(cleanup).toHaveBeenCalledTimes(ref.mock.calls.length);
    });

    itUnlessSkipped('dataAttributes', 'passes data attributes through', () => {
      render(compose({ 'data-conformance': CONFORMANCE_DATA_ATTRIBUTE_VALUE }));

      expect(screen.getByTestId(CONFORMANCE_TEST_ID)).toHaveAttribute(
        'data-conformance',
        CONFORMANCE_DATA_ATTRIBUTE_VALUE,
      );
    });

    itUnlessSkipped('ariaAttributes', 'passes aria attributes through', () => {
      render(compose({ 'aria-label': CONFORMANCE_ARIA_LABEL }));

      expect(screen.getByTestId(CONFORMANCE_TEST_ID)).toHaveAttribute(
        'aria-label',
        CONFORMANCE_ARIA_LABEL,
      );
    });

    itUnlessSkipped('className', 'merges the consumer className', () => {
      render(compose({ className: CONFORMANCE_CLASS_NAME }));

      const rootNode = screen.getByTestId(CONFORMANCE_TEST_ID);

      expect(rootNode).toHaveClass(CONFORMANCE_CLASS_NAME);
      expect(rootNode.className.split(' ').pop()).toBe(CONFORMANCE_CLASS_NAME);

      if (isDefined(ownClassName)) {
        expect(rootNode).toHaveClass(ownClassName);
      }
    });

    itUnlessSkipped(
      'style',
      'applies the consumer style to the root node',
      () => {
        render(compose({ style: CONFORMANCE_STYLE }));

        expect(screen.getByTestId(CONFORMANCE_TEST_ID)).toHaveStyle(
          CONFORMANCE_STYLE,
        );
      },
    );

    itUnlessSkipped('renderProp', 'renders the element given to render', () => {
      const ref = createRef<Element>();

      render(
        compose({
          ref,
          className: CONFORMANCE_CLASS_NAME,
          render: createElement(renderPropTagName, {
            className: CONFORMANCE_RENDER_CLASS_NAME,
            'data-conformance-render': CONFORMANCE_DATA_ATTRIBUTE_VALUE,
          }),
        }),
      );

      const rootNode = screen.getByTestId(CONFORMANCE_TEST_ID);

      expect(rootNode.localName).toBe(renderPropTagName);
      expect(rootNode).toHaveAttribute(
        'data-conformance-render',
        CONFORMANCE_DATA_ATTRIBUTE_VALUE,
      );
      expect(rootNode).toHaveClass(
        CONFORMANCE_CLASS_NAME,
        CONFORMANCE_RENDER_CLASS_NAME,
      );
      expect(ref.current).toBe(rootNode);

      if (isDefined(ownClassName)) {
        expect(rootNode).toHaveClass(ownClassName);
      }
    });

    itUnlessSkipped(
      'renderProp',
      'renders the element returned by the render function',
      () => {
        const ref = createRef<Element>();

        render(
          compose({
            ref,
            className: CONFORMANCE_CLASS_NAME,
            render: (renderProps: HTMLAttributes<HTMLElement>) =>
              createElement(renderPropTagName, {
                ...renderProps,
                'data-conformance-render': CONFORMANCE_DATA_ATTRIBUTE_VALUE,
              }),
          }),
        );

        const rootNode = screen.getByTestId(CONFORMANCE_TEST_ID);

        expect(rootNode.localName).toBe(renderPropTagName);
        expect(rootNode).toHaveAttribute(
          'data-conformance-render',
          CONFORMANCE_DATA_ATTRIBUTE_VALUE,
        );
        expect(rootNode).toHaveClass(CONFORMANCE_CLASS_NAME);
        expect(ref.current).toBe(rootNode);
      },
    );

    itUnlessSkipped('unmount', 'unmounts cleanly', () => {
      const { unmount } = render(compose({}));

      expect(() => unmount()).not.toThrow();
      expect(screen.queryByTestId(CONFORMANCE_TEST_ID)).toBeNull();
    });

    itUnlessSkipped('serverRender', 'renders to a string without a DOM', () => {
      const restoreGlobals = hideGlobals(SERVER_HIDDEN_GLOBALS);

      try {
        expect(() => renderToString(compose({}))).not.toThrow();
      } finally {
        restoreGlobals();
      }

      expect(consoleErrorSpy).not.toHaveBeenCalled();
      expect(consoleWarnSpy).not.toHaveBeenCalled();
    });
  });
};