using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.ServiceModel;
using Microsoft.Xrm.Sdk;

namespace Optrua.Plugins {
public class FollowUpPlugin : IPlugin {
  public void Execute(IServiceProvider serviceProvider)
  {
    // Obtain the tracing service
    ITracingService tracingService = (ITracingService)serviceProvider.GetService(typeof(ITracingService));

    // Obtain the execution context from the service provider.
    IPluginExecutionContext context = (IPluginExecutionContext)
                                          serviceProvider.GetService(typeof(IPluginExecutionContext));

    // The InputParameters collection contains all the data passed in the message request.
    if (context.InputParameters.Contains("Target") && context.InputParameters["Target"] is Entity) {
      // Obtain the target entity from the input parameters.
      Entity entity = (Entity)context.InputParameters["Target"];

      // Obtain the IOrganizationService instance which you will need for
      // web service calls.
      IOrganizationServiceFactory serviceFactory = (IOrganizationServiceFactory)serviceProvider.GetService(typeof(IOrganizationServiceFactory));
      IOrganizationService service = serviceFactory.CreateOrganizationService(context.UserId);

      try {
        // Create a task activity to follow up with the account customer in 7 days.
        Entity followup = new Entity("task");

        followup["subject"] = "Send e-mail to the new customer.";
        followup["description"] = "Follow up with the customer. Check if there are any new issues that need resolution.";
        followup["scheduledstart"] = DateTime.Now.AddDays(7);
        followup["scheduledend"] = DateTime.Now.AddDays(7);
        followup["category"] = context.PrimaryEntityName;

        // Refer to the account in the task activity.
        if (context.OutputParameters.Contains("id")) {
          Guid regardingobjectid = new Guid(context.OutputParameters["id"].ToString());
          string regardingobjectidType = "account";

          followup["regardingobjectid"] = new EntityReference(regardingobjectidType, regardingobjectid);
        }

        // Create the task in Microsoft Dynamics CRM.
        tracingService.Trace("FollowupPlugin: Creating the task activity.");
        service.Create(followup);
      }

      catch (FaultException<OrganizationServiceFault> ex) {
        throw new InvalidPluginExecutionException("An error occurred in FollowUpPlugin.", ex);
      }

      catch (Exception ex) {
        tracingService.Trace("FollowUpPlugin: {0}", ex.ToString());
        throw;
      }
    }
  }
}
}