EmailSender

using Microsoft.Extensions.Options;
using System;
using System.IO;
using System.Net;
using System.Net.Mail;
using System.Text;
using System.Threading.Tasks;

namespace WSGestaoInterv.Services
{
    // This class is used by the application to send email for account confirmation and password reset.
    // For more details see https://go.microsoft.com/fwlink/?LinkID=532713
    public class EmailSender : IEmailSender
    {
        public EmailSender(IOptions<EmailSettings> emailSettings)
        {
            _emailSettings = emailSettings.Value;
        }

        public EmailSettings _emailSettings { get; }

        public Task SendEmailAsync(string email, string tipo, string subject, dynamic message, string token = "")
        {
            try
            {
                Execute(email, tipo, subject, message, token).Wait();
                return Task.FromResult(0);
            }
            catch (Exception)
            {
                throw;
            }
        }

        public async Task Execute(string email, string tipo, string subject, dynamic message, string token)
        {
            try
            {
                string toEmail = string.IsNullOrEmpty(email) ? _emailSettings.ToEmail : email;

                var builder = new StringBuilder();

                if(tipo == "si"){
                    using (var reader = File.OpenText("templates/si.html"))
                    {
                        builder.Append(reader.ReadToEnd());
                    }

                    builder.Replace("@{TipoDocumento}", message.TipoDocumento);
                    builder.Replace("@{NumDocumento}", message.NumDocumento);
                    builder.Replace("@{AgenteSolicitante}", message.AgenteSolicitante);
                    builder.Replace("@{ServiceExecultado}", message.ServiceExecultado);
                    builder.Replace("@{Equipamentos}", message.Equipamentos);
                    builder.Replace("@{Periodos}", message.Periodos);

                    if(token != "")
                    {
                        builder.Replace("@{Link}", token);
                    }

                }else if(tipo == "senha"){
                    using (var reader = File.OpenText("templates/senha.html"))
                    {
                        builder.Append(reader.ReadToEnd());
                    }

                    if(token != "")
                    {
                        builder.Replace("@{Link}", token);
                    }

                    builder.Replace("@{Nome}", message.Nome).Replace("@{Login}", message.Login).Replace("@{Senha}", message.Senha);
                }else if(tipo == "trocasenha"){
                    using (var reader = File.OpenText("templates/trocasenha.html"))
                    {
                        builder.Append(reader.ReadToEnd());
                    }

                    if(token != "")
                    {
                        builder.Replace("@{Link}", token);
                    }

                    builder.Replace("@{Nome}", message.Nome).Replace("@{Login}", message.Login).Replace("@{Senha}", message.Senha);
                }else if(tipo == "nova senha"){
                    using (var reader = File.OpenText("templates/novasenha.html"))
                    {
                        builder.Append(reader.ReadToEnd());
                    }

                    if(token != "")
                    {
                        builder.Replace("@{Link}", token);
                    }

                    builder.Replace("@{Nome}", message.Nome).Replace("@{Login}", message.Login);
                }

                MailMessage mail = new MailMessage()
                {
                    From = new MailAddress(_emailSettings.UsernameEmail, "In Forma API Gestão de Intervenções")
                };

                mail.To.Add(new MailAddress(toEmail));
                // mail.CC.Add(new MailAddress(_emailSettings.CcEmail));

                mail.Subject = "[Portal] " + subject;
                mail.Body = builder.ToString();
                mail.IsBodyHtml = true;
                mail.Priority = MailPriority.High;

                // Adicionar Anexo
                //mail.Attachments.Add(new Attachment(arquivo));

                using (SmtpClient smtp = new SmtpClient(_emailSettings.PrimaryDomain, _emailSettings.PrimaryPort))
                {
                    smtp.Credentials = new NetworkCredential(_emailSettings.UsernameEmail,_emailSettings.UsernamePassword);
                    smtp.EnableSsl = true;
                    await smtp.SendMailAsync(mail);
                }
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }
    }
}