import { format } from 'date-fns';
import ArrayUtils from "~/services/utils/arrayUtils";
import { enUS, fr } from 'date-fns/locale'

export const enum supportedLocales {
  FR = 'fr',
  EN = 'en'
}

const defaultLocale = 'fr'


export default class DateUtils {

  public static format(date: Date, fmt: string): string {
    return format(date, fmt)
  }

  /**
   * Formate la ou les dates au format donné et retourne la liste concaténée
   *
   * @param dates
   * @param fmt
   * @param sep
   */
  public static formatAndConcat (dates: Date | Array<Date>, fmt: string, sep: string = ' - '): string {
    dates = Array.isArray(dates) ? dates : [dates]
    return dates.map((d) => this.format(d, fmt)).join(sep)
  }

  /**
   * Trie les dates par ordre chronologique
   *
   * @param dates
   * @param reverse
   */
  public static sort(dates: Array<Date>, reverse: boolean = false): Array<Date> {
    return ArrayUtils.sort(dates, reverse) as Array<Date>
  }

  public static getFnsLocale(code: supportedLocales): Locale {
    const mapping = {
      'en': enUS,
      'fr' : fr
    }
    return mapping[code] ?? mapping[defaultLocale]
  }

  public static getShortFormatPattern(code: supportedLocales): string {
    const mapping = {
      'en': 'MM/dd/yyyy',
      'fr': 'dd/MM/yyyy'
    }
    return mapping[code] ?? mapping[defaultLocale]
  }

  public static getFormatPattern(code: supportedLocales): string {
    const mapping = {
      'en': 'MM/dd/yyyy HH:mm',
      'fr': 'dd/MM/yyyy HH:mm'
    }
    return mapping[code] ?? mapping[defaultLocale]
  }

  public static formatIsoShortDate(date: Date): string {
    return format(date, 'yyyy-MM-dd')
  }
}