import { type FC, useMemo } from 'react'
import { RiArrowLeftLine } from '@remixicon/react'
import Link from 'next/link'
import { useTranslation } from 'react-i18next'
import { Stepper, type StepperProps } from '../stepper'
import classNames from '@/utils/classnames'

export type TopBarProps = Pick<StepperProps, 'activeIndex'> & {
  className?: string
  datasetId?: string
}

const STEP_T_MAP: Record<number, string> = {
  1: 'datasetCreation.steps.one',
  2: 'datasetCreation.steps.two',
  3: 'datasetCreation.steps.three',
}

export const TopBar: FC<TopBarProps> = (props) => {
  const { className, datasetId, ...rest } = props
  const { t } = useTranslation()

  const fallbackRoute = useMemo(() => {
    return datasetId ? `/datasets/${datasetId}/documents` : '/datasets'
  }, [datasetId])

  return <div className={classNames('flex shrink-0 h-[52px] items-center justify-between relative border-b border-b-divider-subtle', className)}>
    <Link href={fallbackRoute} replace className="inline-flex h-12 items-center justify-start gap-1 py-2 pl-2 pr-6">
      <div className='p-2'>
        <RiArrowLeftLine className='size-4 text-text-primary' />
      </div>
      <p className="system-sm-semibold-uppercase text-text-primary">
        {t('datasetCreation.steps.header.fallbackRoute')}
      </p>
    </Link>
    <div className={
      'absolute left-1/2 top-1/2 -translate-x-1/2 -translate-y-1/2'
    }>
      <Stepper
        steps={Array.from({ length: 3 }, (_, i) => ({
          name: t(STEP_T_MAP[i + 1]),
        }))}
        {...rest}
      />
    </div>
  </div>
}