FactuGES_ERP/packages/shadcn-ui/src/components/form.tsx

"use client";

import { Label } from "@repo/shadcn-ui/components/label";
import { cn } from "@repo/shadcn-ui/lib/utils";
import * as React from "react";
import {
  Controller,
  type ControllerProps,
  type FieldPath,
  type FieldValues,
  FormProvider,
  useFormContext,
} from "react-hook-form";

const Form = FormProvider;

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

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

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, 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 fieldState = getFieldState(fieldContext.name, formState);

  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 | null>(null);

const FormItem = React.forwardRef<HTMLDivElement, React.HTMLAttributes<HTMLDivElement>>(
  ({ className, ...props }, ref) => {
    const id = React.useId();

    return (
      <FormItemContext.Provider value={{ id }}>
        <div className={cn("space-y-2", className)} ref={ref} {...props} />
      </FormItemContext.Provider>
    );
  }
);
FormItem.displayName = "FormItem";

const FormLabel = React.forwardRef<
  React.ElementRef<typeof LabelPrimitive.Root>,
  React.ComponentPropsWithoutRef<typeof LabelPrimitive.Root>
>(({ className, ...props }, ref) => {
  const { error, formItemId } = useFormField();

  return (
    <Label
      className={cn(error && "text-destructive", className)}
      htmlFor={formItemId}
      ref={ref}
      {...props}
    />
  );
});
FormLabel.displayName = "FormLabel";

const FormControl = React.forwardRef<
  React.ElementRef<typeof Slot>,
  React.ComponentPropsWithoutRef<typeof Slot>
>(({ ...props }, ref) => {
  const { error, formItemId, formDescriptionId, formMessageId } = useFormField();

  return (
    <Slot
      aria-describedby={error ? `${formDescriptionId} ${formMessageId}` : `${formDescriptionId}`}
      aria-invalid={!!error}
      id={formItemId}
      ref={ref}
      {...props}
    />
  );
});
FormControl.displayName = "FormControl";

const FormDescription = React.forwardRef<
  HTMLParagraphElement,
  React.HTMLAttributes<HTMLParagraphElement>
>(({ className, ...props }, ref) => {
  const { formDescriptionId } = useFormField();

  return (
    <p
      className={cn("text-sm text-muted-foreground", className)}
      id={formDescriptionId}
      ref={ref}
      {...props}
    />
  );
});
FormDescription.displayName = "FormDescription";

const FormMessage = React.forwardRef<
  HTMLParagraphElement,
  React.HTMLAttributes<HTMLParagraphElement>
>(({ className, children, ...props }, ref) => {
  const { error, formMessageId } = useFormField();
  const body = error ? String(error?.message ?? "") : children;

  if (!body) {
    return null;
  }

  return (
    <p
      className={cn("text-sm font-medium text-destructive", className)}
      id={formMessageId}
      ref={ref}
      {...props}
    >
      {body}
    </p>
  );
});
FormMessage.displayName = "FormMessage";

export {
  Form,
  FormControl,
  FormDescription,
  FormField,
  FormItem,
  FormLabel,
  FormMessage,
  useFormField,
};