LocalDestruction.cs

using System.Collections.Generic;
using System.Threading.Tasks;
using Waher.Events;
using Waher.Service.IoTBroker.EDaler.Uris;
using Waher.Service.IoTBroker.EDaler.Uris.States;
 
namespace Waher.Service.IoTBroker.EDaler.Transactions
{
    public class LocalDestruction : EDalerTransaction
    {
        private readonly bool validateServerSignature;
 
        public LocalDestruction(EDalerUri Uri, bool ValidateServerSignature)
            : base(Uri)
        {
            this.validateServerSignature = ValidateServerSignature;
        }
 
        protected override Task<bool> DoPrepare()
        {
            if (this.validateServerSignature)
            {
                if (!this.Uri.EDaler.Legal.Verify(this.Uri.PreSign, this.Uri.Signature) &&
                    (!string.IsNullOrEmpty(IoTGateway.Gateway.Domain) ||
                    ((this.Uri.EDaler.Server.Domain != "example.com") &&
                    (this.Uri.EDaler.Server.Domain != "example2.com") &&
                    (this.Uri.EDaler.Server.Domain != "example3.com"))))
                {
                    this.Uri.State.Error(EDalerUriErrorType.BadRequest, "Invalid signature.", false);
                    return Task.FromResult(false);
                }
            }
 
            // TODO: Check authorized to destroy eDaler.
 
            return Task.FromResult(true);
        }
 
        protected override Task<bool> DoExecute()
        {
            return Task.FromResult(true);
        }
 
        protected override Task<bool> DoCommit()
        {
            Log.Notice(this.Uri.TotalAmount.ToString() + " " + this.Uri.Currency + 
                " eDaler destroyed.", this.Uri.To.Address, this.Uri.From.Address, 
                "eDalerDestroyed", EventLevel.Major,
                new KeyValuePair<string, object>("Amount", this.Uri.TotalAmount),
                new KeyValuePair<string, object>("Currency", this.Uri.Currency),
                new KeyValuePair<string, object>("RefId", this.Uri.Id.ToString()),
                new KeyValuePair<string, object>("Sender", this.Uri.State.Sender.Value),
                new KeyValuePair<string, object>("From", this.Uri.From.Address.Value),
                new KeyValuePair<string, object>("To", this.Uri.To.Address.Value),
                new KeyValuePair<string, object>("Uri", this.Uri.UriString));
        
            return Task.FromResult(true);
        }
 
        protected override Task<bool> DoRollback()
        {
            return Task.FromResult(true);
        }
 
    }
}