NonInventPurchasingSystem/CPRNIMS.Infrastructure/Helper/SMTPHelper.cs

using CPRNIMS.Infrastructure.ViewModel.Common;
using Microsoft.Extensions.Configuration;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Net.Mail;
using System.Text;
using System.Threading.Tasks;

namespace CPRNIMS.Infrastructure.Helper
{
    public class SMTPHelper
    {
        private readonly IConfiguration _configuration;
        public SMTPHelper(IConfiguration configuration)
        {
            _configuration = configuration;
        }

        public bool IsAuthError { get; private set; }

        public string EMailTemplate(string contentPath)
        {
            // Get the physical path to the template folder
            string templateFolderPath = Path.Combine(contentPath);

            // Read the content of the template file
            string body = File.ReadAllText(templateFolderPath);

            return body;
        }
        public string GenerateOTP()
        {
            const string chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
            var random = new Random();
            var otp = new string(Enumerable.Repeat(chars, 8)
                .Select(s => s[random.Next(s.Length)])
                .ToArray());

            return otp;
        }
        public async Task<bool> SendEmailAsync(EmailMessageDetailsVM emailMessageBody)
        {
            try
            {
                if (string.IsNullOrWhiteSpace(emailMessageBody?.Recipient))
                {
                    Console.WriteLine("Email address is null or empty. Cannot send email.");
                    return false;
                }

                using (MailMessage myMessage = new MailMessage())
                {
                    // Split the recipient string by semicolon and add each email address individually
                    var recipients = emailMessageBody.Recipient.Split(new[] { ';' }, StringSplitOptions.RemoveEmptyEntries);
                    foreach (var recipient in recipients)
                    {
                        myMessage.To.Add(recipient.Trim());
                    }
                    //  myMessage.To.Add(emailMessageBody.Recipient);
                    myMessage.Sender = new MailAddress(emailMessageBody.SenderEmail);
                    myMessage.From = new MailAddress(emailMessageBody.SenderEmail, emailMessageBody.DisplayName);
                    var cc = emailMessageBody.CC.Split(new[] { ';' }, StringSplitOptions.RemoveEmptyEntries);
                    if(cc.Length > 0)
                    {
                        foreach (var ccs in cc)
                        {
                            myMessage.CC.Add(ccs.Trim());
                        }
                    }
                    myMessage.Subject = emailMessageBody.Subject;

                    // Ensure the email body is correctly formatted HTML
                    myMessage.Body = emailMessageBody.Message;
                    myMessage.IsBodyHtml = true;
                    if (emailMessageBody.IsCanvass)
                    {
                        if (File.Exists(emailMessageBody.AttachPath))
                        {
                            Attachment pdfAttachment = new Attachment(emailMessageBody.AttachPath);
                            pdfAttachment.Name = Path.GetFileName(emailMessageBody.AttachPath);
                            myMessage.Attachments.Add(pdfAttachment);
                        }
                    }
                    using (SmtpClient smtp = new SmtpClient(emailMessageBody.Server))
                    {

                        smtp.Port = emailMessageBody.OutGoingPort;
                        smtp.UseDefaultCredentials = emailMessageBody.IsSuccess;
                        smtp.Credentials = new System.Net.NetworkCredential(emailMessageBody.UserName, emailMessageBody.NewPassword);
                        smtp.EnableSsl = true;

                        try
                        {
                            await smtp.SendMailAsync(myMessage);

                            Console.WriteLine("Email sent successfully.");
                            return true;
                        }
                        catch (Exception ex)
                        {
                            var Message = ex.InnerException?.ToString() ?? ex.Message.ToString();
                            Console.WriteLine($"Error sending email: {Message}");
                            return false;
                        }
                    }
                }
            }
            catch (Exception ex)
            {
                IsAuthError = true;
                var Message = ex.InnerException?.ToString() ?? ex.Message.ToString();
                Console.WriteLine($"Error in SendEmailAsync: {Message}");
                return false;
            }
        }
    }
}