TourIAm/TIAM.Services.Server/MessageSenderService.cs

using System.Net;
using AyCode.Models.Enums;
using Microsoft.Extensions.Configuration;
using SendGrid;
using SendGrid.Helpers.Mail;
using TIAM.Database.DataLayers.Admins;
using TIAM.Entities.Emails;

namespace TIAM.Services.Server
{
    public class MessageSenderService(IConfiguration configuration, AdminDal adminDal) : IMessageSenderService
    {
        public async Task<string> SendMessageAsync(EmailMessage message, int messageType)
        {
            var result = "";
            switch (messageType)
            {
                case (int)MessageTypesEnum.email:
                    Console.WriteLine($@"EmailMessage!!!");
                    // Access DerivedClass properties
                    //var subject = emailMessage.Subject;
                    result = (await SendMailWithSendgrid(message)).ToString(); //?? HttpStatusCode.BadRequest.ToString();
                    break;
                case (int)MessageTypesEnum.sms:
                    //await SendSmsWithTwilio(message.Message);
                    break;
                case (int)MessageTypesEnum.push:
                    //await SendPushWithFirebase(message.Message);
                    break;
                case (int)MessageTypesEnum.chat:
                //await SendChatWithSignalR(message.Message);
                default:

                    break;
            }

            return result;
        }

        public async Task<HttpStatusCode> SendMailWithSendgrid(EmailMessage message)
        {
            Console.WriteLine($@"Sender: {message.SenderId}");
            Console.WriteLine($@"Message: {message.Text}");
            //resolve user!!!

            if (!message.SenderId.HasValue) return HttpStatusCode.BadRequest;

            var senderUser = adminDal.GetUserById(message.SenderId.Value);
            //var receiverUser = adminDal.Context.Users.FirstOrDefault(x => x.Id == message.ReceiverId);

            if (senderUser != null) return HttpStatusCode.BadRequest;
            
            var apiKey = configuration["SendGrid:Key"];
            var client = new SendGridClient(apiKey);
            EmailAddress from;

            if (message.SenderId == Guid.Empty)
            {
                from = new EmailAddress("noreply@tiam.com", "TourIAm mailservice");
            }
            else
            {
                from = new EmailAddress(message.EmailAddress, senderUser.Profile.Name);
            }

            foreach (var messageRecipient in message.Recipients)
            {
                var to = new EmailAddress(messageRecipient.EmailAddress, messageRecipient.EmailAddress);
                var plainTextContent = message.Text;
                //var _htmlContent = message.;

                //MailHelper.CreateSingleEmailToMultipleRecipients()
                var msg = MailHelper.CreateSingleEmail(from, to, message.Subject, plainTextContent, plainTextContent);
                var response = await client.SendEmailAsync(msg).ConfigureAwait(false);
            }

            //return response.StatusCode;
            return HttpStatusCode.Accepted;
        }

    }
}