/// <inheritdoc />
protected override async Task <Result <DateTime, IError> > Run(
IStateMonad stateMonad,
CancellationToken cancellationToken)
{
var dateResult = await Date.Run(stateMonad, cancellationToken)
.Map(async x => await x.GetStringAsync());
if (dateResult.IsFailure)
{
return(dateResult.ConvertFailure <DateTime>());
}
string?inputFormat = null;
if (InputFormat != null)
{
var inputFormatResult = await InputFormat.Run(stateMonad, cancellationToken)
.Map(async x => await x.GetStringAsync());
if (inputFormatResult.IsFailure)
{
return(inputFormatResult.ConvertFailure <DateTime>());
}
inputFormat = inputFormatResult.Value;
}
var cultureResult = await Culture.Run(stateMonad, cancellationToken)
.Map(async x => await x.GetStringAsync());
if (cultureResult.IsFailure)
{
return(cultureResult.ConvertFailure <DateTime>());
}
CultureInfo ci;
try
{
ci = new CultureInfo(cultureResult.Value);
}
catch (CultureNotFoundException)
{
return(new SingleError(
new ErrorLocation(this),
ErrorCode.CouldNotParse,
cultureResult.Value,
nameof(Culture)
));
}
DateTime date;
if (inputFormat == null)
{
try
{
date = DateTime.Parse(dateResult.Value, ci);
}
catch (FormatException fe)
{
return(new SingleError(
new ErrorLocation(this),
fe,
ErrorCode.CouldNotParse
));
}
}
else
{
try
{
date = DateTime.ParseExact(dateResult.Value, inputFormat, ci);
}
catch (FormatException fe)
{
return(new SingleError(
new ErrorLocation(this),
fe,
ErrorCode.CouldNotParse
));
}
}
return(date);
}