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Eric Gullickson
259
Helper/MailHelper.cs
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259
Helper/MailHelper.cs
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using MotoVaultPro.Models;
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using MimeKit;
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using MailKit.Net.Smtp;
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using MailKit.Security;
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namespace MotoVaultPro.Helper
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{
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public interface IMailHelper
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{
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OperationResponse NotifyUserForRegistration(string emailAddress, string token);
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OperationResponse NotifyUserForPasswordReset(string emailAddress, string token);
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OperationResponse NotifyUserForAccountUpdate(string emailAddress, string token);
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OperationResponse NotifyUserForReminders(Vehicle vehicle, List<string> emailAddresses, List<ReminderRecordViewModel> reminders);
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OperationResponse SendTestEmail(string emailAddress, MailConfig testMailConfig);
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}
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public class MailHelper : IMailHelper
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{
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private readonly MailConfig mailConfig;
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private readonly string serverLanguage;
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private readonly string serverDomain;
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private readonly IFileHelper _fileHelper;
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private readonly ITranslationHelper _translator;
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private readonly ILogger<MailHelper> _logger;
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public MailHelper(
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IConfigHelper config,
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IFileHelper fileHelper,
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ITranslationHelper translationHelper,
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ILogger<MailHelper> logger
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) {
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//load mailConfig from Configuration
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mailConfig = config.GetMailConfig();
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serverLanguage = config.GetServerLanguage();
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serverDomain = config.GetServerDomain();
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_fileHelper = fileHelper;
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_translator = translationHelper;
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_logger = logger;
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}
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public OperationResponse NotifyUserForRegistration(string emailAddress, string token)
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{
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if (string.IsNullOrWhiteSpace(mailConfig.EmailServer))
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{
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return OperationResponse.Failed("SMTP Server Not Setup");
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}
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if (string.IsNullOrWhiteSpace(emailAddress) || string.IsNullOrWhiteSpace(token)) {
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return OperationResponse.Failed("Email Address or Token is invalid");
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}
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string emailSubject = _translator.Translate(serverLanguage, "Your Registration Token for MotoVaultPro");
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string tokenHtml = token;
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if (!string.IsNullOrWhiteSpace(serverDomain))
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{
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string cleanedURL = serverDomain.EndsWith('/') ? serverDomain.TrimEnd('/') : serverDomain;
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//construct registration URL.
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tokenHtml = $"<a href='{cleanedURL}/Login/Registration?email={emailAddress}&token={token}' target='_blank'>{token}</a>";
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}
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string emailBody = $"<span>{_translator.Translate(serverLanguage, "A token has been generated on your behalf, please complete your registration for MotoVaultPro using the token")}: {tokenHtml}</span>";
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var result = SendEmail(new List<string> { emailAddress }, emailSubject, emailBody);
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if (result)
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{
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return OperationResponse.Succeed("Email Sent!");
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} else
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{
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return OperationResponse.Failed();
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}
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}
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public OperationResponse NotifyUserForPasswordReset(string emailAddress, string token)
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{
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if (string.IsNullOrWhiteSpace(mailConfig.EmailServer))
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{
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return OperationResponse.Failed("SMTP Server Not Setup");
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}
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if (string.IsNullOrWhiteSpace(emailAddress) || string.IsNullOrWhiteSpace(token))
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{
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return OperationResponse.Failed("Email Address or Token is invalid");
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}
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string emailSubject = _translator.Translate(serverLanguage, "Your Password Reset Token for MotoVaultPro");
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string tokenHtml = token;
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if (!string.IsNullOrWhiteSpace(serverDomain))
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{
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string cleanedURL = serverDomain.EndsWith('/') ? serverDomain.TrimEnd('/') : serverDomain;
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//construct registration URL.
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tokenHtml = $"<a href='{cleanedURL}/Login/ResetPassword?email={emailAddress}&token={token}' target='_blank'>{token}</a>";
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}
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string emailBody = $"<span>{_translator.Translate(serverLanguage, "A token has been generated on your behalf, please reset your password for MotoVaultPro using the token")}: {tokenHtml}</span>";
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var result = SendEmail(new List<string> { emailAddress }, emailSubject, emailBody);
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if (result)
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{
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return OperationResponse.Succeed("Email Sent!");
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}
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else
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{
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return OperationResponse.Failed();
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}
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}
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public OperationResponse SendTestEmail(string emailAddress, MailConfig testMailConfig)
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{
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if (string.IsNullOrWhiteSpace(testMailConfig.EmailServer))
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{
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return OperationResponse.Failed("SMTP Server Not Setup");
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}
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if (string.IsNullOrWhiteSpace(emailAddress))
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{
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return OperationResponse.Failed("Email Address or Token is invalid");
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}
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string emailSubject = _translator.Translate(serverLanguage, "Test Email from MotoVaultPro");
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string emailBody = _translator.Translate(serverLanguage, "If you are seeing this email it means your SMTP configuration is functioning correctly");
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var result = SendEmail(testMailConfig, new List<string> { emailAddress }, emailSubject, emailBody);
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if (result)
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{
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return OperationResponse.Succeed("Email Sent!");
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}
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else
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{
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return OperationResponse.Failed();
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}
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}
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public OperationResponse NotifyUserForAccountUpdate(string emailAddress, string token)
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{
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if (string.IsNullOrWhiteSpace(mailConfig.EmailServer))
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{
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return OperationResponse.Failed("SMTP Server Not Setup");
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}
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if (string.IsNullOrWhiteSpace(emailAddress) || string.IsNullOrWhiteSpace(token))
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{
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return OperationResponse.Failed("Email Address or Token is invalid");
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}
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string emailSubject = _translator.Translate(serverLanguage, "Your User Account Update Token for MotoVaultPro");
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string emailBody = $"{_translator.Translate(serverLanguage, "A token has been generated on your behalf, please update your account for MotoVaultPro using the token")}: {token}";
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var result = SendEmail(new List<string> { emailAddress}, emailSubject, emailBody);
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if (result)
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{
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return OperationResponse.Succeed("Email Sent!");
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}
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else
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{
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return OperationResponse.Failed();
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}
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}
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public OperationResponse NotifyUserForReminders(Vehicle vehicle, List<string> emailAddresses, List<ReminderRecordViewModel> reminders)
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{
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if (string.IsNullOrWhiteSpace(mailConfig.EmailServer))
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{
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return OperationResponse.Failed("SMTP Server Not Setup");
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}
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if (!emailAddresses.Any())
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{
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return OperationResponse.Failed("No recipients could be found");
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}
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if (!reminders.Any())
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{
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return OperationResponse.Failed("No reminders could be found");
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}
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//get email template, this file has to exist since it's a static file.
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var emailTemplatePath = _fileHelper.GetFullFilePath(StaticHelper.ReminderEmailTemplate);
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string emailSubject = $"{_translator.Translate(serverLanguage, "Vehicle Reminders From MotoVaultPro")} - {DateTime.Now.ToShortDateString()}";
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//construct html table.
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string emailBody = File.ReadAllText(emailTemplatePath);
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emailBody = emailBody.Replace("{VehicleInformation}", $"{vehicle.Year} {vehicle.Make} {vehicle.Model} #{StaticHelper.GetVehicleIdentifier(vehicle)}");
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string tableHeader = $"<th>{_translator.Translate(serverLanguage, "Urgency")}</th><th>{_translator.Translate(serverLanguage, "Description")}</th><th>{_translator.Translate(serverLanguage, "Due")}</th>";
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string tableBody = "";
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foreach(ReminderRecordViewModel reminder in reminders)
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{
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var dueOn = reminder.Metric == ReminderMetric.Both ? $"{reminder.Date.ToShortDateString()} or {reminder.Mileage}" : reminder.Metric == ReminderMetric.Date ? $"{reminder.Date.ToShortDateString()}" : $"{reminder.Mileage}";
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tableBody += $"<tr class='{reminder.Urgency}'><td>{_translator.Translate(serverLanguage, StaticHelper.GetTitleCaseReminderUrgency(reminder.Urgency))}</td><td>{reminder.Description}</td><td>{dueOn}</td></tr>";
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}
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emailBody = emailBody.Replace("{TableHeader}", tableHeader).Replace("{TableBody}", tableBody);
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try
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{
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var result = SendEmail(emailAddresses, emailSubject, emailBody);
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if (result)
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{
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return OperationResponse.Succeed("Email Sent!");
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} else
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{
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return OperationResponse.Failed();
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}
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} catch (Exception ex)
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{
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return OperationResponse.Failed(ex.Message);
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}
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}
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private bool SendEmail(List<string> emailTo, string emailSubject, string emailBody) {
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string from = mailConfig.EmailFrom;
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var server = mailConfig.EmailServer;
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var message = new MimeMessage();
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message.From.Add(new MailboxAddress(from, from));
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foreach(string emailRecipient in emailTo)
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{
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message.To.Add(new MailboxAddress(emailRecipient, emailRecipient));
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}
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message.Subject = emailSubject;
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var builder = new BodyBuilder();
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builder.HtmlBody = emailBody;
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message.Body = builder.ToMessageBody();
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using (var client = new SmtpClient())
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{
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client.Connect(server, mailConfig.Port, SecureSocketOptions.Auto);
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//perform authentication if either username or password is provided.
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//do not perform authentication if neither are provided.
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if (!string.IsNullOrWhiteSpace(mailConfig.Username) || !string.IsNullOrWhiteSpace(mailConfig.Password)) {
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client.Authenticate(mailConfig.Username, mailConfig.Password);
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}
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try
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{
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client.Send(message);
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client.Disconnect(true);
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return true;
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} catch (Exception ex)
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{
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_logger.LogError(ex.Message);
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return false;
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}
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}
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}
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private bool SendEmail(MailConfig testMailConfig, List<string> emailTo, string emailSubject, string emailBody)
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{
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string from = testMailConfig.EmailFrom;
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var server = testMailConfig.EmailServer;
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var message = new MimeMessage();
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message.From.Add(new MailboxAddress(from, from));
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foreach (string emailRecipient in emailTo)
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{
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message.To.Add(new MailboxAddress(emailRecipient, emailRecipient));
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}
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message.Subject = emailSubject;
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var builder = new BodyBuilder();
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builder.HtmlBody = emailBody;
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message.Body = builder.ToMessageBody();
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using (var client = new SmtpClient())
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{
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client.Connect(server, testMailConfig.Port, SecureSocketOptions.Auto);
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//perform authentication if either username or password is provided.
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//do not perform authentication if neither are provided.
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if (!string.IsNullOrWhiteSpace(testMailConfig.Username) || !string.IsNullOrWhiteSpace(testMailConfig.Password))
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{
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client.Authenticate(testMailConfig.Username, testMailConfig.Password);
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}
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try
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{
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client.Send(message);
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client.Disconnect(true);
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return true;
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}
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catch (Exception ex)
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{
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_logger.LogError(ex.Message);
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return false;
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}
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}
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}
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}
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}
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