Prowlarr/src/NzbDrone.Core/Notifications/SendGrid/SendGrid.cs

using System;
using System.Collections.Generic;
using FluentValidation.Results;
using NLog;

namespace NzbDrone.Core.Notifications.SendGrid
{
    public class SendGrid : NotificationBase<SendGridSettings>
    {
        private readonly ISendGridProxy _proxy;
        private readonly Logger _logger;

        public SendGrid(ISendGridProxy proxy, Logger logger)
        {
            _proxy = proxy;
            _logger = logger;
        }

        public override string Name => "SendGrid";
        public override string Link => "https://sendgrid.com/";

        public override void OnHealthIssue(HealthCheck.HealthCheck healthCheck)
        {
            _proxy.SendNotification(HEALTH_ISSUE_TITLE, healthCheck.Message, Settings);
        }

        public override ValidationResult Test()
        {
            var failures = new List<ValidationFailure>();

            try
            {
                const string title = "Test Notification";
                const string body = "This is a test message from Prowlarr";

                _proxy.SendNotification(title, body, Settings);
            }
            catch (Exception ex)
            {
                _logger.Error(ex, "Unable to send test message");
                failures.Add(new ValidationFailure("", "Unable to send test message"));
            }

            return new ValidationResult(failures);
        }
    }
}