export function formatInputDate (date: Date, locale: string): string {
  // only it-IT
  try {
    const year = date.getFullYear().toString()
    let month = (date.getMonth() + 1).toString()
    let day = date.getDate().toString()

    if (day.length === 1) {
      day = `0${day}`
    }

    if (month.length === 1) {
      month = `0${month}`
    }

    return `${day}/${month}/${year}`
  } catch {
    return ''
  }
}

export function parseInputDate (value: string, locale: string): Date | null {
  // only it-IT
  const dateRegex = /^(0?[1-9]|[12][0-9]|3[01])[/](0?[1-9]|1[012])[/]\d{4}$/
  if (!value.match(dateRegex)) {
    return null
  }

  const parts = value.split('/')
  const day = parseInt(parts[0])
  const month = parseInt(parts[1])
  const year = parseInt(parts[2])
  const parsedDate = new Date(Date.UTC(year, month - 1, day))

  const formattedDate = formatInputDate(parsedDate, locale)

  if (formattedDate === value) {
    return parsedDate
  } else {
    return null
  }
}

export function parseDate (isoString: string): Date {
  return new Date(isoString)
}

export function formatDate (date: Date, locale: string): string {
  const months = ['Gennaio', 'Febbraio', 'Marzo', 'Aprile', 'Maggio', 'Giugno', 'Luglio', 'Agosto', 'Settembre', 'Ottobre', 'Novembre', 'Dicembre']
  const year = date.getFullYear()
  const month = months[date.getMonth()]
  const day = date.getDate()
  return `${day} ${month} ${year}`
}

export function formatTime (date: Date, locale: string): string {
  const hour = date.getHours()
  const minutes = date.getMinutes()
  return `${hour < 10 ? '0' : ''}${hour}:${minutes < 10 ? '0' : ''}${minutes}`
}

export function formatDateTime (date: Date, locale: string): string {
  return `${formatDate(date, locale)} ${formatTime(date, locale)}`
}