import type { FieldPath, FieldValues } from 'react-hook-form';
import { useFormContext } from 'react-hook-form';

import * as React from 'react';

type FormFieldContextValue<
  TFieldValues extends FieldValues = FieldValues,
  TName extends FieldPath<TFieldValues> = FieldPath<TFieldValues>,
> = {
  name: TName;
};

type FormItemContextValue = {
  id: string;
};

const FormFieldContext = React.createContext<FormFieldContextValue | undefined>(undefined);

const FormItemContext = React.createContext<FormItemContextValue | undefined>(undefined);

const useFormField = () => {
  const fieldContext = React.useContext(FormFieldContext);
  const itemContext = React.useContext(FormItemContext);
  const { getFieldState, formState } = useFormContext();

  if (!fieldContext) {
    throw new Error('useFormField should be used within <FormField>');
  }

  if (!itemContext) {
    throw new Error('useFormField should be used within <FormItem>');
  }

  const { id } = itemContext;
  const fieldState = getFieldState(fieldContext.name, formState);

  return {
    id,
    name: fieldContext.name,
    formItemId: `${id}-form-item`,
    formDescriptionId: `${id}-form-item-description`,
    formMessageId: `${id}-form-item-message`,
    get error() {
      return fieldState.error;
    },
  };
};

// eslint-disable-next-line react-refresh/only-export-components
export { FormFieldContext, FormItemContext, useFormField };