| | | 1 | | namespace NLightning.Bolt11.Models.TaggedFields; |
| | | 2 | | |
| | | 3 | | using Domain.Node; |
| | | 4 | | using Domain.Utils; |
| | | 5 | | using Enums; |
| | | 6 | | using Interfaces; |
| | | 7 | | |
| | | 8 | | /// <summary> |
| | | 9 | | /// Tagged field for features |
| | | 10 | | /// </summary> |
| | | 11 | | /// <remarks> |
| | | 12 | | /// The features are a collection of features that are supported by the node. |
| | | 13 | | /// </remarks> |
| | | 14 | | /// <seealso cref="ITaggedField"/> |
| | | 15 | | internal sealed class FeaturesTaggedField : ITaggedField |
| | | 16 | | { |
| | 0 | 17 | | public TaggedFieldTypes Type => TaggedFieldTypes.Features; |
| | 0 | 18 | | internal FeatureSet Value { get; } |
| | 0 | 19 | | public short Length { get; } |
| | | 20 | | |
| | | 21 | | /// <summary> |
| | | 22 | | /// Initializes a new instance of the <see cref="DescriptionTaggedField"/> class. |
| | | 23 | | /// </summary> |
| | | 24 | | /// <param name="value">The Description</param> |
| | 0 | 25 | | internal FeaturesTaggedField(FeatureSet value) |
| | | 26 | | { |
| | 0 | 27 | | Value = value; |
| | 0 | 28 | | Length = (short)(value.SizeInBits / 5 + (value.SizeInBits % 5 == 0 ? 0 : 1)); |
| | 0 | 29 | | } |
| | | 30 | | |
| | | 31 | | /// <inheritdoc/> |
| | | 32 | | public void WriteToBitWriter(BitWriter bitWriter) |
| | | 33 | | { |
| | 0 | 34 | | var shouldPad = Length * 5 / 8 == (Length * 5 - 7) / 8; |
| | | 35 | | |
| | | 36 | | // Write data |
| | 0 | 37 | | Value.WriteToBitWriter(bitWriter, Length * 5, shouldPad); |
| | 0 | 38 | | } |
| | | 39 | | |
| | | 40 | | /// <inheritdoc/> |
| | | 41 | | public bool IsValid() |
| | | 42 | | { |
| | 0 | 43 | | return true; |
| | | 44 | | } |
| | | 45 | | |
| | | 46 | | /// <summary> |
| | | 47 | | /// Reads a FeaturesTaggedField from a BitReader |
| | | 48 | | /// </summary> |
| | | 49 | | /// <param name="bitReader">The BitReader to read from</param> |
| | | 50 | | /// <param name="length">The length of the field</param> |
| | | 51 | | /// <returns>The FeaturesTaggedField</returns> |
| | | 52 | | /// <exception cref="ArgumentException">Thrown when the length is invalid</exception> |
| | | 53 | | internal static FeaturesTaggedField FromBitReader(BitReader bitReader, short length) |
| | | 54 | | { |
| | 0 | 55 | | if (length <= 0) |
| | 0 | 56 | | throw new ArgumentException( |
| | 0 | 57 | | $"Invalid length for {nameof(FeaturesTaggedField)}. Length must be greater than 0", |
| | 0 | 58 | | nameof(length)); |
| | | 59 | | |
| | 0 | 60 | | var shouldPad = length * 5 / 8 == (length * 5 - 7) / 8; |
| | 0 | 61 | | var features = FeatureSet.DeserializeFromBitReader(bitReader, length * 5, shouldPad); |
| | | 62 | | |
| | 0 | 63 | | return new FeaturesTaggedField(features); |
| | | 64 | | } |
| | | 65 | | } |