import { useTranslation } from '../i18n'

export function useDateFormatter() {
  const { locale } = useTranslation()

  const dateLocale = (): string => (locale === 'en' ? 'en-US' : 'zh-CN')

  const formatDate = (date: Date | string, options?: Intl.DateTimeFormatOptions) => {
    const d = typeof date === 'string' ? new Date(date) : date
    return d.toLocaleDateString(dateLocale(), options)
  }

  const formatDateTime = (date: Date | string, options?: Intl.DateTimeFormatOptions) => {
    const d = typeof date === 'string' ? new Date(date) : date
    return d.toLocaleString(dateLocale(), options)
  }

  const formatTime = (date: Date | string) => {
    const d = typeof date === 'string' ? new Date(date) : date
    return d.toLocaleTimeString(dateLocale())
  }

  return { formatDate, formatDateTime, formatTime }
}

/** 纯函数版：不需要 hook，传入 locale 即可 */
export function formatDateStatic(date: Date | string, locale: string, options?: Intl.DateTimeFormatOptions) {
  const d = typeof date === 'string' ? new Date(date) : date
  return d.toLocaleDateString(locale === 'en' ? 'en-US' : 'zh-CN', options)
}

export function formatDateTimeStatic(date: Date | string, locale: string, options?: Intl.DateTimeFormatOptions) {
  const d = typeof date === 'string' ? new Date(date) : date
  return d.toLocaleString(locale === 'en' ? 'en-US' : 'zh-CN', options)
}