public static DateTimeOffset Parse(string str)
{
if (str.EndsWith("PDT") || str.EndsWith("PST"))
{
// like "Aug 09, 2020 9:33am PDT"
var timeZoneAbbreviation = str.Substring(str.Length - 3);
var timeZoneOffset = PacificTimeZone.GetOffsetFromAbbreviation(timeZoneAbbreviation);
var reformattedDate = str.Substring(0, str.Length - 3) + $"{timeZoneOffset.Hours}:00";
return(DateTimeOffset.Parse(reformattedDate));
}
else if (DateTime.TryParseExact(str, "MMMM d, yyyy, h:mm tt", null, DateTimeStyles.None,
out var dateTime))
{
var timeZoneInfo = TimeZoneInfo.FindSystemTimeZoneById(PacificTimeZone.TimeZoneId);
var offset = timeZoneInfo.GetUtcOffset(dateTime);
return(new DateTimeOffset(dateTime, offset));
}
else if (
DateTimeOffset.TryParseExact(str, "ddd, dd MMM yyyy HH:mm:ss zzzz", null, DateTimeStyles.None,
out var dateTimeOffset) || // Fri, 14 Aug 2020 21:30:00 -0700
DateTimeOffset.TryParseExact(str, "yyyy-MM-ddTHH:mm:sszzzz", null, DateTimeStyles.None,
out dateTimeOffset)) // 2020-08-14T14:30:00-07:00
{
return(dateTimeOffset);
}
else
{
throw new Api500Exception($"Cannot parse date \"{str}\".");
}
}
public override void Write(Utf8JsonWriter writer, DateTimeOffset value, JsonSerializerOptions options)
{
var pptTime = TimeZoneInfo.ConvertTimeBySystemTimeZoneId(value, PacificTimeZone.TimeZoneId);
var amPm = $"{pptTime:tt}".ToLowerInvariant();
var timeZoneAbbreviation = PacificTimeZone.GetAbbreviationFromOffset(pptTime.Offset);
writer.WriteStringValue($"{pptTime:MMMM d, yyyy, h:mm} {amPm} {timeZoneAbbreviation}");
}
public static string ToJsonString(DateTimeOffset value)
{
var pptTime = TimeZoneInfo.ConvertTimeBySystemTimeZoneId(value, PacificTimeZone.TimeZoneId);
var amPm = $"{pptTime:tt}".ToLowerInvariant();
var timeZoneAbbreviation = PacificTimeZone.GetAbbreviationFromOffset(pptTime.Offset);
string str = $"{pptTime:MMM dd, yyyy h:mm}{amPm} {timeZoneAbbreviation}";
return(str);
}