gabor-boros/minutes

package utils

import "time"

// DateFormat is the enumeration of available date formats, used by clients.
// Although the builtin time package contains several formatting options, some
// clients are using nonsense date time formats.
type DateFormat int

const (
    // DateFormatISO8601 represents the ISO 8601 date format.
    DateFormatISO8601 DateFormat = iota
    // DateFormatRFC3339UTC is similar to RFC3339, but has no offset, in UTC.
    DateFormatRFC3339UTC
    // DateFormatRFC3339Compact is similar to RFC3339, but has no separation.
    // This is not a standard date time format, it is used by Timewarrior.
    DateFormatRFC3339Compact
    // DateFormatRFC3339Local is similar to RFC3339, but lacks timezone info.
    // This is not a standard date time format, it is used by Timewarrior.
    DateFormatRFC3339Local
)

// String returns the string representation of the format.
func (d DateFormat) String() string {
    return []string{
        "2006-01-02",           // DateFormatISO8601
        "2006-01-02T15:04:05Z", // DateFormatRFC3339UTC
        "20060102T150405Z",     // DateFormatRFC3339Compact
        "2006-01-02T15:04:05",  // DateFormatRFC3339Local
    }[d]
}

// Format returns the formatted version of the given time.
func (d DateFormat) Format(t time.Time) string {
    return t.Format(d.String())
}

// Parse the given string with the specified layout.
func (d DateFormat) Parse(s string) (time.Time, error) {
    return time.Parse(d.String(), s)
}