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'use client'
import * as React from 'react'
import * as LabelPrimitive from '@radix-ui/react-label'
import { Slot } from '@radix-ui/react-slot'
import {
Controller,
FormProvider,
useFormContext,
useFormState,
type ControllerProps,
type FieldPath,
type FieldValues,
} from 'react-hook-form'
import { cn } from '@/lib/utils'
import { Label } from '@/components/ui/label'
const Form = FormProvider
type FormFieldContextValue<
TFieldValues extends FieldValues = FieldValues,
TName extends FieldPath<TFieldValues> = FieldPath<TFieldValues>,
> = {
name: TName
}
const FormFieldContext = React.createContext<FormFieldContextValue>(
{} as FormFieldContextValue,
)
const FormField = <
TFieldValues extends FieldValues = FieldValues,
TName extends FieldPath<TFieldValues> = FieldPath<TFieldValues>,
>({
...props
}: ControllerProps<TFieldValues, TName>) => {
return (
<FormFieldContext.Provider value={{ name: props.name }}>
<Controller {...props} />
</FormFieldContext.Provider>
)
}
const useFormField = () => {
const fieldContext = React.useContext(FormFieldContext)
const itemContext = React.useContext(FormItemContext)
const { getFieldState } = useFormContext()
const formState = useFormState({ name: fieldContext.name })
const fieldState = getFieldState(fieldContext.name, formState)
if (!fieldContext) {
throw new Error('useFormField should be used within <FormField>')
}
const { id } = itemContext
return {
id,
name: fieldContext.name,
formItemId: `${id}-form-item`,
formDescriptionId: `${id}-form-item-description`,
formMessageId: `${id}-form-item-message`,
...fieldState,
}
}
type FormItemContextValue = {
id: string
}
const FormItemContext = React.createContext<FormItemContextValue>(
{} as FormItemContextValue,
)
function FormItem({ className, ...props }: React.ComponentProps<'div'>) {
const id = React.useId()
return (
<FormItemContext.Provider value={{ id }}>
<div
data-slot="form-item"
className={cn('grid gap-2', className)}
{...props}
/>
</FormItemContext.Provider>
)
}
function FormLabel({
className,
...props
}: React.ComponentProps<typeof LabelPrimitive.Root>) {
const { error, formItemId } = useFormField()
return (
<Label
data-slot="form-label"
data-error={!!error}
className={cn('data-[error=true]:text-destructive', className)}
htmlFor={formItemId}
{...props}
/>
)
}
function FormControl({ ...props }: React.ComponentProps<typeof Slot>) {
const { error, formItemId, formDescriptionId, formMessageId } = useFormField()
return (
<Slot
data-slot="form-control"
id={formItemId}
aria-describedby={
!error
? `${formDescriptionId}`
: `${formDescriptionId} ${formMessageId}`
}
aria-invalid={!!error}
{...props}
/>
)
}
function FormDescription({ className, ...props }: React.ComponentProps<'p'>) {
const { formDescriptionId } = useFormField()
return (
<p
data-slot="form-description"
id={formDescriptionId}
className={cn('text-muted-foreground text-sm', className)}
{...props}
/>
)
}
function FormMessage({ className, ...props }: React.ComponentProps<'p'>) {
const { error, formMessageId } = useFormField()
const body = error ? String(error?.message ?? '') : props.children
if (!body) {
return null
}
return (
<p
data-slot="form-message"
id={formMessageId}
className={cn('text-destructive text-sm', className)}
{...props}
>
{body}
</p>
)
}
export {
useFormField,
Form,
FormItem,
FormLabel,
FormControl,
FormDescription,
FormMessage,
FormField,
}
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