import { Component } from 'react';
import styles from '@patternfly/react-styles/css/components/Radio/radio';
import { css } from '@patternfly/react-styles';
import { PickOptional } from '../../helpers/typeUtils';
import { getOUIAProps, OUIAProps } from '../../helpers';
import { SSRSafeIds } from '../../helpers/SSRSafeIds/SSRSafeIds';

export interface RadioProps
  extends Omit<React.HTMLProps<HTMLInputElement>, 'disabled' | 'label' | 'onChange' | 'type'>, OUIAProps {
  /** Additional classes added to the radio wrapper. This wrapper will be div element by default. It will be a label element if
   * isLabelWrapped is true, or it can be overridden by any element specified in the component prop.
   */
  className?: string;
  /** Additional classes added to the radio input. */
  inputClassName?: string;
  /** Id of the radio. */
  id: string;
  /** Flag to indicate whether the radio wrapper element is a native label element for the radio input. Will not apply if a component prop (with a value other than a "label") is specified. */
  isLabelWrapped?: boolean;
  /** Flag to show if the radio is checked. */
  checked?: boolean;
  /** Flag to show if the radio is checked. */
  isChecked?: boolean;
  /** Flag to show if the radio is disabled. */
  isDisabled?: boolean;
  /** Flag to show if the radio selection is valid or invalid. */
  isValid?: boolean;
  /** Label text of the radio. */
  label?: React.ReactNode;
  /** Sets the position of the label. Defaults to 'end' (after the radio input). */
  labelPosition?: 'start' | 'end';
  /** Name for group of radios */
  name: string;
  /** A callback for when the radio selection changes. */
  onChange?: (event: React.FormEvent<HTMLInputElement>, checked: boolean) => void;
  /** Aria label for the radio. */
  'aria-label'?: string;
  /** Description text of the radio. */
  description?: React.ReactNode;
  /** Body of the radio. */
  body?: React.ReactNode;
  /** Custom aria-describedby value for the radio input. If not provided and description is set, a unique ID will be generated automatically. */
  'aria-describedby'?: string;
  /** Sets the radio wrapper component to render. Defaults to "div". If set to "label", behaves the same as if isLabelWrapped prop was specified. */
  component?: React.ElementType;
  /** Value to overwrite the randomly generated data-ouia-component-id.*/
  ouiaId?: number | string;
  /** Set the value of data-ouia-safe. Only set to true when the component is in a static state, i.e. no animations are occurring. At all other times, this value must be false. */
  ouiaSafe?: boolean;
}

class Radio extends Component<RadioProps> {
  static displayName = 'Radio';
  static defaultProps: PickOptional<RadioProps> = {
    className: '',
    isDisabled: false,
    isValid: true,
    onChange: () => {}
  };

  constructor(props: RadioProps) {
    super(props);
    if (!props.label && !props['aria-label']) {
      // eslint-disable-next-line no-console
      console.error('Radio:', 'Radio requires an aria-label to be specified');
    }
  }

  handleChange = (event: React.FormEvent<HTMLInputElement>) => {
    this.props.onChange(event, event.currentTarget.checked);
  };

  render() {
    const {
      'aria-label': ariaLabel,
      'aria-describedby': ariaDescribedBy,
      checked,
      className,
      inputClassName,
      defaultChecked,
      isLabelWrapped,
      labelPosition = 'end',
      isChecked,
      isDisabled,
      isValid,
      label,
      // eslint-disable-next-line @typescript-eslint/no-unused-vars
      onChange,
      description,
      body,
      ouiaId,
      ouiaSafe = true,
      component,
      ...props
    } = this.props;
    if (!props.id) {
      // eslint-disable-next-line no-console
      console.error('Radio:', 'id is required to make input accessible');
    }

    return (
      <SSRSafeIds prefix="pf-radio-description-" ouiaComponentType="Radio">
        {(descriptionId, generatedOuiaId) => {
          let ariaDescribedByValue: string | undefined;
          if (ariaDescribedBy !== undefined) {
            ariaDescribedByValue = ariaDescribedBy === '' ? undefined : ariaDescribedBy;
          } else if (description) {
            ariaDescribedByValue = descriptionId;
          }

          const inputRendered = (
            <input
              {...props}
              className={css(styles.radioInput, inputClassName)}
              type="radio"
              onChange={this.handleChange}
              aria-invalid={!isValid}
              aria-describedby={ariaDescribedByValue}
              disabled={isDisabled}
              checked={checked || isChecked}
              {...(checked === undefined && { defaultChecked })}
              {...(!label && { 'aria-label': ariaLabel })}
              {...getOUIAProps(Radio.displayName, ouiaId !== undefined ? ouiaId : generatedOuiaId, ouiaSafe)}
            />
          );

          const wrapWithLabel = (isLabelWrapped && !component) || component === 'label';

          const Label = wrapWithLabel ? 'span' : 'label';
          const labelRendered = label ? (
            <Label
              className={css(styles.radioLabel, isDisabled && styles.modifiers.disabled)}
              htmlFor={!wrapWithLabel ? props.id : undefined}
            >
              {label}
            </Label>
          ) : null;

          const WrapperComponent = component ?? (wrapWithLabel ? 'label' : 'div');

          return (
            <WrapperComponent
              className={css(styles.radio, !label && styles.modifiers.standalone, className)}
              htmlFor={wrapWithLabel ? props.id : undefined}
            >
              {labelPosition === 'start' ? (
                <>
                  {labelRendered}
                  {inputRendered}
                </>
              ) : (
                <>
                  {inputRendered}
                  {labelRendered}
                </>
              )}
              {description && (
                <span id={descriptionId} className={css(styles.radioDescription)}>
                  {description}
                </span>
              )}
              {body && <span className={css(styles.radioBody)}>{body}</span>}
            </WrapperComponent>
          );
        }}
      </SSRSafeIds>
    );
  }
}

export { Radio };