PlanTempusApp/PlanTempus.Components/Users/Create/CreateUserHandlerDecorator.cs

using Microsoft.ApplicationInsights;

namespace PlanTempus.Components.Users.Create;

public class CreateUserHandlerDecorator : ICommandHandler<CreateUserCommand, CreateUserResult>
{
    private readonly ICommandHandler<CreateUserCommand, CreateUserResult> _decoratedHandler;
    private readonly TelemetryClient _telemetryClient;

    public CreateUserHandlerDecorator(
        ICommandHandler<CreateUserCommand, CreateUserResult> decoratedHandler,
        TelemetryClient telemetryClient)
    {
        _decoratedHandler = decoratedHandler;
        _telemetryClient = telemetryClient;
    }

    public async Task<CreateUserResult> Handle(CreateUserCommand command)
    {
        _telemetryClient.TrackTrace($"Before handling {nameof(CreateUserCommand)}");
        var result = await _decoratedHandler.Handle(command);
        _telemetryClient.TrackTrace($"After handling {nameof(CreateUserCommand)}");
        return result;
    }
}