import { FocusEvent } from 'react';
import { Radio, RadioChangeEvent } from 'antd';
import {
  ariaDescribedByIds,
  enumOptionsIndexForValue,
  enumOptionsValueForIndex,
  optionId,
  FormContextType,
  GenericObjectType,
  RJSFSchema,
  StrictRJSFSchema,
  WidgetProps,
} from '@rjsf/utils';

/** The `RadioWidget` is a widget for rendering a radio group.
 *  It is typically used with a string property constrained with enum options.
 *
 * @param props - The `WidgetProps` for this component
 */
export default function RadioWidget<T = any, S extends StrictRJSFSchema = RJSFSchema, F extends FormContextType = any>({
  autofocus,
  disabled,
  formContext,
  id,
  onBlur,
  onChange,
  onFocus,
  options,
  readonly,
  value,
}: WidgetProps<T, S, F>) {
  const { readonlyAsDisabled = true } = formContext as GenericObjectType;

  const { enumOptions, enumDisabled, emptyValue } = options;

  const handleChange = ({ target: { value: nextValue } }: RadioChangeEvent) =>
    onChange(enumOptionsValueForIndex<S>(nextValue, enumOptions, emptyValue));

  const handleBlur = ({ target }: FocusEvent<HTMLInputElement>) =>
    onBlur(id, enumOptionsValueForIndex<S>(target && target.value, enumOptions, emptyValue));

  const handleFocus = ({ target }: FocusEvent<HTMLInputElement>) =>
    onFocus(id, enumOptionsValueForIndex<S>(target && target.value, enumOptions, emptyValue));

  const selectedIndexes = enumOptionsIndexForValue<S>(value, enumOptions) as string;

  return (
    <Radio.Group
      disabled={disabled || (readonlyAsDisabled && readonly)}
      id={id}
      name={id}
      onChange={!readonly ? handleChange : undefined}
      onBlur={!readonly ? handleBlur : undefined}
      onFocus={!readonly ? handleFocus : undefined}
      value={selectedIndexes}
      aria-describedby={ariaDescribedByIds<T>(id)}
    >
      {Array.isArray(enumOptions) &&
        enumOptions.map((option, i) => (
          <Radio
            id={optionId(id, i)}
            name={id}
            autoFocus={i === 0 ? autofocus : false}
            disabled={disabled || (Array.isArray(enumDisabled) && enumDisabled.indexOf(option.value) !== -1)}
            key={i}
            value={String(i)}
          >
            {option.label}
          </Radio>
        ))}
    </Radio.Group>
  );
}