GetTokens.cs

using System;
using System.Collections.Generic;
using System.Threading.Tasks;
using System.Xml;
using Waher.Content;
using Waher.IoTGateway;
using Waher.Networking.HTTP;
using Waher.Persistence;
using Waher.Persistence.Filters;
using Waher.Script;
using Waher.Script.Abstraction.Elements;
using Waher.Service.IoTBroker.DataStorage;
using Waher.Service.IoTBroker.NeuroFeatures;
 
namespace Waher.Service.IoTBroker.WebServices.Agent.Tokens
{
    public class GetTokens : AgentPostResource
    {
        public GetTokens()
            : base("Tokens/GetTokens",
                new KeyValuePair<Type, Expression>(typeof(Dictionary<string, object>), new Expression(jsonPattern)),
                new KeyValuePair<Type, Expression>(typeof(XmlDocument), new Expression(xmlPattern)))
        {
        }
 
        private static readonly string jsonPattern = Resources.LoadResourceAsText(typeof(GetTokens).Namespace + ".JSON.GetTokens.req");
        private static readonly string xmlPattern = Resources.LoadResourceAsText(typeof(GetTokens).Namespace + ".XML.GetTokens.req");
 
        public override async Task POST(HttpRequest Request, HttpResponse Response, Dictionary<string, IElement> Parameters)
        {
            AccountUser User = AssertUserAuthenticated(Request);
 
            int Offset = 0;
            int MaxCount = int.MaxValue;
            bool References = true;
 
            if (Parameters.TryGetValue("POffset", out IElement E) && !(E is null) &&
                E.AssociatedObjectValue is double d)
            {
                Offset = (int)d;
            }
 
            if (Parameters.TryGetValue("PMaxCount", out E) && !(E is null) &&
                E.AssociatedObjectValue is double d2)
            {
                MaxCount = (int)d2;
            }
 
            if (Parameters.TryGetValue("PReferences", out E) && !(E is null) &&
                E.AssociatedObjectValue is bool b)
            {
                References = b;
            }
 
            string Xml;
            string BareJid = User.UserName + "@" + Gateway.Domain;
            IEnumerable<TokenReference> TokenReferences = await Database.Find<TokenReference>(Offset, MaxCount,
                new FilterFieldEqualTo("OwnerJid", BareJid), "-Updated");
 
            if (References)
                Xml = NeuroFeaturesProcessor.SerializeTokenReferences(TokenReferences);
            else
            {
                List<Token> Tokens = new List<Token>();
 
                foreach (TokenReference Ref in TokenReferences)
                {
                    Token Token = await NeuroFeaturesProcessor.GetToken(Ref.TokenId, false);
                    if (!(Token is null))
                        Tokens.Add(Token);
                }
 
                Xml = NeuroFeaturesProcessor.SerializeTokenReferences(Tokens);
            }
 
            XmlDocument Doc = new XmlDocument()
            {
                PreserveWhitespace = true
            };
            Doc.LoadXml(Xml);
 
            await Response.Return(new NamedDictionary<string, object>("TokensResult", AgentNamespace)
            {
                { "Tokens", Doc }
            });
        }
    }
}