UpdatePubSubNode.cs

using System.Collections.Generic;
using System.Threading.Tasks;
using Waher.Content;
using Waher.IoTGateway;
using Waher.Networking.HTTP;
using Waher.Persistence;
using Waher.Service.IoTBroker.PubSub;
 
namespace Waher.Service.IoTBroker.WebServices
{
    public class UpdatePubSubNode : HttpSynchronousResource, IHttpPostMethod
    {
        public UpdatePubSubNode()
            : base("/UpdatePubSubNode")
        {
        }
 
        public override bool HandlesSubPaths => false;
        public override bool UserSessions => true;
        public bool AllowsPOST => true;
 
        public async Task POST(HttpRequest Request, HttpResponse Response)
        {
            Gateway.AssertUserAuthenticated(Request, "Admin.Broker.XMPP.PubSub");
 
            if (!Request.HasData)
                throw new BadRequestException();
 
            object Obj = await Request.DecodeDataAsync();
            if (!(Obj is Dictionary<string, string> Form))
                throw new BadRequestException();
 
            CaseInsensitiveString Name;
            bool PublishOnWeb;
 
            if (!Form.ContainsKey("Name") || CaseInsensitiveString.IsNullOrEmpty(Name = Form["Name"]))
                throw new BadRequestException();
 
            if (!Form.ContainsKey("PublishOnWeb"))
                PublishOnWeb = false;
            else if (!CommonTypes.TryParse(Form["PublishOnWeb"], out PublishOnWeb))
                throw new BadRequestException();
 
            PubSubNode PubSubNode = await XmppServerModule.GetPubSubNodeAsync(Name);
            if (PubSubNode is null)
                throw new NotFoundException();
 
            if (PubSubNode.PublishOnWeb != PublishOnWeb)
            {
                PubSubNode.PublishOnWeb = PublishOnWeb;
                await Database.Update(PubSubNode);
 
                XmppServerModule.Instance.WebNodeStatus(Name, PublishOnWeb);
            }
 
            if (!(Request.Header.Referer is null))
                throw new SeeOtherException(Request.Header.Referer.Value);  // PRG pattern.
        }
    }
}