BlobContent.cs

using System;
using System.Collections.Generic;
 
namespace Waher.Networking.HTTP.Mcp.Model.Resources
{
    public class BlobContent : IResourceContent
    {
        private readonly Uri uri;
        private readonly byte[] encoded;
        private readonly string contentType;
        private readonly Dictionary<string, object>? metaData;
 
        public BlobContent(Uri Uri, byte[] Encoded, string ContentType,
            Dictionary<string, object>? MetaData)
        {
            this.uri = Uri;
            this.encoded = Encoded;
            this.contentType = ContentType;
            this.metaData = MetaData;
        }
 
        public Dictionary<string, object> Encode()
        {
            Dictionary<string, object> Result = new Dictionary<string, object>
            {
                { "uri", this.uri.OriginalString },
                { "blob", Convert.ToBase64String(this.encoded) }
            };
 
            if (!string.IsNullOrEmpty(this.contentType))
                Result["mimeType"] = this.contentType;
 
            if (!(this.metaData is null))
                Result["_meta"] = this.metaData;
 
            return Result;
        }
    }
}