Logging web analytics based on consent

using CMS;
using CMS.DataEngine;
using CMS.Core;
using CMS.DataProtection;
using CMS.ContactManagement;
using CMS.WebAnalytics;

// Registers the custom module into the system
[assembly: RegisterModule(typeof(CustomConsentModule))]

public class CustomConsentModule : Module
{
    // Module class constructor, the system registers the module under the name "CustomConsent"
    public CustomConsentModule()
        : base("CustomConsent")
    {
    }

    // Contains initialization code that is executed when the application starts
    protected override void OnInit()
    {
        base.OnInit();

        // Assigns a handler to the WebAnalyticsEvents.CheckAnalyticsConsent.Execute event
        // This event occurs before the system logs web analytics for visitors and processes their personal data
        WebAnalyticsEvents.CheckAnalyticsConsent.Execute += Analytics_CheckConsent;
    }

    private void Analytics_CheckConsent(object sender, CheckAnalyticsConsentEventArgs e)
    {
        // Gets the contact for which the analytics are being logged
        // Note: The contact is null for visitors who have not given consent for contact tracking
        ContactInfo contact = ContactInfoProvider.GetContactInfo(e.ContactId);

        // Gets the consent that will be evaluated
        ConsentInfo consent = ConsentInfoProvider.GetConsentInfo("WebAnalytics");

        // Disables web analytics logging for all visitors (contacts) who have not accepted the "WebAnalytics" consent declaration
        IConsentAgreementService consentService = Service.Resolve<IConsentAgreementService>();
        e.HasConsent = (contact != null && consent != null) && consentService.IsAgreed(contact, consent);
    }
}