public object Convert(object value, Type targetType, object parameter, string language)
{
if (value == null)
{
value = DateTime.Now; // TEST;
}
if (value is DateTimeOffset)
{
value = ((DateTimeOffset)value).DateTime;
}
var format = (string)parameter;
if (format.StartsWith("unigram"))
{
switch (format)
{
case "unigram.monthgrouping":
return(ConvertMonthGrouping((DateTime)value));
}
}
else
{
var formatted = new DateTimeFormatter(format, GlobalizationPreferences.Languages).Format((DateTime)value).Trim('\u200E', '\u200F');
if (format.Contains("full"))
{
return(formatted.Substring(0, 1).ToUpper() + formatted.Substring(1));
}
return(formatted);
}
return(value);
}
public static string ConvertMonthGrouping(DateTime date)
{
var formatted = new DateTimeFormatter("month.full", GlobalizationPreferences.Languages).Format(date).Trim('\u200E', '\u200F');
formatted = formatted.Substring(0, 1).ToUpper() + formatted.Substring(1);
if (date.Year != DateTime.Now.Year)
{
formatted += $" {date.Year}";
}
return(formatted);
}
private static string ConvertMonthGrouping(DateTime date)
{
var formatted = new DateTimeFormatter("month.full").Format(date).Trim('\u200E', '\u200F');
formatted = formatted.Substring(0, 1).ToUpper() + formatted.Substring(1);
if (date.Year != DateTime.Now.Year)
{
formatted += $" {date.Year}";
}
return(formatted);
}