/* ZZeslint-disable */
//Browser Locale conversion utilities
//dates,numbers currency etc
export default {
  ////////////////////////////////////////////////////////
  // attempt to determine user's preferred language settings
  // As of Jan 2020 all major browsers support
  //  navigator.languages
  // but some use navigator.language (singular) to denote UI language preference
  // not browsing language preference
  // so the ideal way to do this is to use navigator.languages[0] for the preferred language
  // and ignore the singular property since we don't care about the actual browser UI language
  // only how the user expects to see the page itself
  //
  // also for sake of future proofing and edge cases need to have it be manually settable as well
  //  ############### TODO: modify all of these to put the user's manual override first in line (if there is one)
  //https://appmakers.dev/bcp-47-language-codes-list/
  getBrowserLanguages() {
    return window.navigator.languages;
  },
  getBrowserFirstLanguage() {
    return window.navigator.languages[0];
  },
  ///////////////////////////////////////////
  // Get users default time zone
  //https://www.iana.org/time-zones
  //https://en.wikipedia.org/wiki/List_of_tz_database_time_zones
  getBrowserTimeZoneName() {
    return Intl.DateTimeFormat().resolvedOptions().timeZone;
  },
  //////////////////////////////////////////////////
  // Get the user's chosen currency name
  //https://en.wikipedia.org/wiki/ISO_4217
  getCurrencyName() {
    return window.$gz.store.state.userOptions.currencyName;
  },
  //////////////////////////////////////////////////
  // Get the user's chosen 12hr clock
  //
  getHour12() {
    return window.$gz.store.state.userOptions.hour12;
  },
  ///////////////////////////////////////////
  // Turn a utc date into a displayable
  // short date and time
  // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date/toLocaleString
  //
  utcDateToShortDateAndTimeLocalized(
    value,
    timeZoneName,
    languageName,
    hour12
  ) {
    if (!value) {
      return "";
    }
    if (!timeZoneName) {
      timeZoneName = this.getBrowserTimeZoneName();
    }
    if (!languageName) {
      languageName = this.getBrowserLanguages();
    }

    if (!hour12) {
      hour12 = this.getHour12();
    }

    //parse the date which is identified as utc ("2020-02-06T18:18:49.148011Z")
    let parsedDate = new Date(value);

    //is it a valid date?
    if (!(parsedDate instanceof Date && !isNaN(parsedDate))) {
      return "not valid";
    }

    return parsedDate.toLocaleString(languageName, {
      timeZone: timeZoneName,
      dateStyle: "short",
      timeStyle: "short",
      hour12: hour12
    });
  }, ///////////////////////////////////////////
  // Turn a utc date into a displayable
  // short date
  //
  utcDateToShortDateLocalized(value, timeZoneName, languageName) {
    if (!value) {
      return "";
    }
    if (!timeZoneName) {
      timeZoneName = this.getBrowserTimeZoneName();
    }
    if (!languageName) {
      languageName = this.getBrowserLanguages();
    }

    //parse the date which is identified as utc ("2020-02-06T18:18:49.148011Z")
    let parsedDate = new Date(value);

    //is it a valid date?
    if (!(parsedDate instanceof Date && !isNaN(parsedDate))) {
      return "not valid";
    }

    return parsedDate.toLocaleDateString(languageName, {
      timeZone: timeZoneName,
      dateStyle: "short"
    });
  }, ///////////////////////////////////////////
  // Turn a utc date into a displayable
  // short time
  //
  utcDateToShortTimeLocalized(value, timeZoneName, languageName, hour12) {
    if (!value) {
      return "";
    }
    if (!timeZoneName) {
      timeZoneName = this.getBrowserTimeZoneName();
    }
    if (!languageName) {
      languageName = this.getBrowserLanguages();
    }

    if (!hour12) {
      hour12 = this.getHour12();
    }

    //parse the date which is identified as utc ("2020-02-06T18:18:49.148011Z")
    let parsedDate = new Date(value);

    //is it a valid date?
    if (!(parsedDate instanceof Date && !isNaN(parsedDate))) {
      return "not valid";
    }

    return parsedDate.toLocaleTimeString(languageName, {
      timeZone: timeZoneName,
      timeStyle: "short",
      hour12: hour12
    });
  },
  ///////////////////////////////////////////////
  // Convert a utc date to local time zone
  // and return time portion only in iso 8601
  // format (used by time and date picker components)
  //
  utcDateStringToLocal8601TimeOnlyString(value, timeZoneName) {
    if (!value) {
      //if no value, return the current time as expected by the time picker
    } else {
      //ok, the reason for sv-SE is that it's a locale that returns the time already in ISO format and 24hr by default
      //that can change over time so if this breaks that's why
      //also fr-CA does as well as possibly en-CA
      //https://stackoverflow.com/a/58633686/8939
      if (!timeZoneName) {
        timeZoneName = this.getBrowserTimeZoneName();
      }
      return new Date(value).toLocaleTimeString("sv-SE", {
        timeZone: timeZoneName
      });
    }
  },
  ///////////////////////////////////////////////
  // Convert a local time only string with date string
  // to UTC and output as ISO 8601
  //  (used by time and date picker components)
  //
  localTimeDateStringToUTC8601String(value, timeZoneName) {
    //https://moment.github.io/luxon/docs/manual/zones.html#creating-datetimes-in-a-zone
    if (!timeZoneName) {
      timeZoneName = this.getBrowserTimeZoneName();
    }
    //parse in the time in the currently used timezone
    return window.$gz.DateTime.fromISO(value, {
      zone: this.timeZoneName
    })
      .setZone("utc") //convert to UTC
      .toISO(); //output as ISO 8601
  },
  ///////////////////////////////////////////////
  // Convert a utc date to local time zone
  // and return date only portion only in iso 8601
  // format (used by time and date picker components)
  //
  utcDateStringToLocal8601DateOnlyString(value, timeZoneName) {
    if (!value) {
      //if no value, return the current time as expected by the time picker
    } else {
      //ok, the reason for sv-SE is that it's a locale that returns the time already in ISO format and 24hr by default
      //that can change over time so if this breaks that's why
      //also fr-CA does as well as possibly en-CA
      //https://stackoverflow.com/a/58633686/8939
      if (!timeZoneName) {
        timeZoneName = this.getBrowserTimeZoneName();
      }
      return new Date(value).toLocaleDateString("sv-SE", {
        timeZone: timeZoneName
      });
    }
  },
  ///////////////////////////////////////////
  // Turn a decimal number into a local
  // currency display
  //
  currencyLocalized(value, languageName, currencyName) {
    if (!value) return "";
    if (!languageName) {
      languageName = this.getBrowserLanguages();
    }
    if (!currencyName) {
      currencyName = this.getCurrencyName();
    }

    return new Intl.NumberFormat(languageName, {
      style: "currency",
      currency: currencyName
    }).format(value);
  },
  ///////////////////////////////////////////
  // Turn a decimal number into a local
  // decimal format display
  //
  decimalLocalized(value, languageName) {
    if (!value) return "";
    if (!languageName) {
      languageName = this.getBrowserLanguages();
    }
    return new Intl.NumberFormat(languageName, {
      minimumFractionDigits: 2
    }).format(value);
  },
  ///////////////////////////////////////////
  // Turn a file / memory size number into a local
  // decimal format display and in reasonable human readable range
  //
  humanFileSize(bytes, languageName, si = false, dp = 1) {
    const thresh = si ? 1000 : 1024;

    if (Math.abs(bytes) < thresh) {
      return bytes + " B";
    }

    const units = si
      ? ["kB", "MB", "GB", "TB", "PB", "EB", "ZB", "YB"]
      : ["KiB", "MiB", "GiB", "TiB", "PiB", "EiB", "ZiB", "YiB"];
    let u = -1;
    const r = 10 ** dp;

    do {
      bytes /= thresh;
      ++u;
    } while (
      Math.round(Math.abs(bytes) * r) / r >= thresh &&
      u < units.length - 1
    );

    return (
      this.decimalLocalized(bytes.toFixed(dp), languageName) + " " + units[u]
    );
  }
};