static BsonValue ConvertToDate(BsonValue value, ConversionBSONType conversion)
{
if (value is BsonDateTime dateTimeValue)
{
return(ConvertDateTo(new DateTimeOffset(dateTimeValue.ToUniversalTime(), TimeSpan.Zero), conversion));
}
if (value is BsonString stringValue)
{
return(ConvertDateTo(DateTimeOffset.Parse(stringValue.Value, CultureInfo.InvariantCulture), conversion));
}
throw new CannotConvertValueUsingConversion(value, conversion);
}
/// <inheritdoc />
public BsonValue Convert(BsonValue value, ConversionBSONType conversion)
{
switch (conversion)
{
case ConversionBSONType.None:
return(value);
case ConversionBSONType.DateAsDate:
case ConversionBSONType.DateAsArray:
case ConversionBSONType.DateAsDocument:
case ConversionBSONType.DateAsString:
case ConversionBSONType.DateAsInt64:
return(ConvertToDate(value, conversion));
case ConversionBSONType.GuidAsStandardBinary:
case ConversionBSONType.GuidAsCsharpLegacyBinary:
case ConversionBSONType.GuidAsString:
return(ConvertToGuid(value, conversion));
default:
throw new UnknownBSONConversionType(conversion);
}
}
/// <summary>
/// Initializes a new instance of the <see cref="UnknownBSONConversionType"/> class.
/// </summary>
/// <param name="conversion">The unknown conversion type.</param>
public UnknownBSONConversionType(ConversionBSONType conversion)
: base($"Cannot convert value using the BSON conversion {conversion}")
{
}
static BsonValue ConvertDateTo(DateTimeOffset value, ConversionBSONType conversion)
=> conversion switch
{
/// <summary>
/// Initializes a new instance of the <see cref="CannotConvertValueUsingConversion"/> class.
/// </summary>
/// <param name="value">The value to be converted.</param>
/// <param name="conversion">The conversion to be applied.</param>
public CannotConvertValueUsingConversion(BsonValue value, ConversionBSONType conversion)
: base($"Cannot convert value '{value}' of type {value.BsonType} using conversion {conversion}")
{
}
