import { forwardRef, useId, type InputHTMLAttributes, type ReactNode } from 'react';
import { cn } from '../utils/cn';

interface Props extends InputHTMLAttributes<HTMLInputElement> {
  label?: string;
  hint?: string;
  error?: string;
  leftIcon?: ReactNode;
  rightIcon?: ReactNode;
  containerClassName?: string;
}

export const Input = forwardRef<HTMLInputElement, Props>(function Input(
  {
    label,
    hint,
    error,
    leftIcon,
    rightIcon,
    className,
    containerClassName,
    id,
    required,
    ...rest
  },
  ref,
) {
  const generatedId = useId();
  const inputId = id || generatedId;
  const describedBy = error
    ? `${inputId}-error`
    : hint
      ? `${inputId}-hint`
      : undefined;

  return (
    <div className={cn('flex flex-col gap-1.5', containerClassName)}>
      {label && (
        <label htmlFor={inputId} className="text-sm font-medium text-slate-800">
          {label}
          {required && (
            <span className="ml-0.5 text-red-600" aria-hidden>
              *
            </span>
          )}
        </label>
      )}
      <div className="relative">
        {leftIcon && (
          <span
            className="pointer-events-none absolute left-3 top-1/2 -translate-y-1/2 text-slate-400"
            aria-hidden
          >
            {leftIcon}
          </span>
        )}
        <input
          ref={ref}
          id={inputId}
          aria-invalid={!!error || undefined}
          aria-describedby={describedBy}
          required={required}
          className={cn(
            'block w-full rounded-md border bg-white px-3 py-2 text-sm text-slate-900 placeholder:text-slate-400',
            'transition-colors focus:outline-none focus:ring-2 focus:ring-offset-0',
            error
              ? 'border-red-400 focus:border-red-500 focus:ring-red-200'
              : 'border-slate-300 focus:border-brand-500 focus:ring-brand-200',
            'disabled:cursor-not-allowed disabled:bg-slate-50 disabled:text-slate-400',
            leftIcon && 'pl-9',
            rightIcon && 'pr-9',
            className,
          )}
          {...rest}
        />
        {rightIcon && (
          <span
            className="pointer-events-none absolute right-3 top-1/2 -translate-y-1/2 text-slate-400"
            aria-hidden
          >
            {rightIcon}
          </span>
        )}
      </div>
      {hint && !error && (
        <p id={`${inputId}-hint`} className="text-xs text-slate-500">
          {hint}
        </p>
      )}
      {error && (
        <p id={`${inputId}-error`} className="text-xs font-medium text-red-600">
          {error}
        </p>
      )}
    </div>
  );
});