Initial Commit ...

2024-01-25 04:51:13 +03:30
commit 2b05450746
21 changed files with 758 additions and 0 deletions
@@ -0,0 +1,148 @@
+using System;
+using System.Collections.Generic;
+using System.Net;
+using System.Net.Mail;
+using System.Threading.Tasks;
+using xCommons.Extensions;
+using xExceptions.Constants;
+using xMessageService.Interfaces;
+using xMessageService.Models;
+
+namespace xMessageService.Providers {
+    public partial class XMailService : IXMailService {
+        private SmtpClient smtpClient;
+        private readonly string defaultProvider;
+        private readonly IDictionary<string, XMailConfiguration> configurations;
+
+        public XMailService (
+            string defaultProvider,
+            IDictionary<string, XMailConfiguration> configurations
+        ) {
+            this.defaultProvider = defaultProvider;
+            this.configurations = configurations;
+
+            //
+            // Get instance of SMTP Client ...
+            PrepareSmtpClient ();
+        }
+
+        public Task SendMailAsync (
+            XMessage message,
+            string provider = null
+        ) {
+            //
+            // Run Send Mail Asynchronous ...
+            return Task.Run (() => {
+                SendMail (message, provider);
+            });
+        }
+
+        #region Private ...
+        /// <summary>
+        /// Validate and Retrieve Provider Configuration for Service
+        /// </summary>
+        /// <param name="provider"></param>
+        /// <returns></returns>
+        private XMailConfiguration GetConfiguration (string provider = null) {
+            //
+            if (provider.IsNullOrEmpty ()) {
+                provider = defaultProvider;
+            }
+
+            //
+            if (!configurations.Keys.Contains (provider)) {
+                XException.MessageServiceInitialFailed.Throw ();
+            }
+
+            //
+            return configurations[provider];
+        }
+
+        /// <summary>
+        /// Prepare SMTP Client by Using Specified/Default Provider
+        /// </summary>
+        /// <param name="provider"></param>
+        private void PrepareSmtpClient (string provider = null) {
+            //
+            var config = GetConfiguration (provider);
+            if (config.IsNull()) {
+                return;
+            }
+
+            //
+            smtpClient = new SmtpClient () {
+                Host = config.Host,
+                Port = config.Port,
+                EnableSsl = config.EnableSsl,
+                UseDefaultCredentials = false,
+                Credentials = new NetworkCredential (
+                config.Username,
+                config.Password)
+            };
+        }
+
+        /// <summary>
+        /// Prepare Mail Message With Specified/Default Provider
+        /// </summary>
+        /// <param name="message"></param>
+        /// <param name="provider"></param>
+        /// <returns></returns>
+        private MailMessage PrepareMailMessage (
+            XMessage message,
+            string provider = null
+        ) {
+            //
+            if (message == null ||
+                message.Message.IsNullOrEmpty () ||
+                message.Recievers.Count == 0) {
+                XException.InvalidMessage.Throw ();
+            }
+
+            //
+            var config = GetConfiguration (provider);
+            var mailMessage = new MailMessage () {
+                From = new MailAddress (config.Username),
+                Subject = config.Title,
+                Body = message.Message
+            };
+
+            //
+            foreach (var reciever in message.Recievers) {
+                mailMessage.To.Add (reciever);
+            }
+
+            //
+            return mailMessage;
+        }
+
+        /// <summary>
+        /// Send Mail Using Specified/Default Provider
+        /// </summary>
+        /// <param name="message"></param>
+        /// <param name="provider"></param>
+        private void SendMail (
+            XMessage message,
+            string provider = null
+        ) {
+            //
+            if (smtpClient.IsNull()) {
+                //
+                Console.WriteLine ($"SMTP Error: MessageServiceInitialFailed ...");
+                XException.MessageServiceInitialFailed.Throw ();
+            }
+
+            //
+            var mailMessage = PrepareMailMessage (message, provider);
+
+            //
+            try {
+                smtpClient.Send (mailMessage);
+            } catch (Exception ex) {
+                //
+                Console.WriteLine ($"SMTP Error: {ex.Message}");
+                XException.MessageServiceInitialFailed.Throw ();
+            }
+        }
+        #endregion        
+    }
+}