Initial support for Graph API E-Mail handler

2023-01-24 15:43:42 -08:00
parent 4c07a777c3
commit 587c21fa03
4 changed files with 88 additions and 6 deletions
--- a/TwilioSMSReceiver.Common/MessageHandlers/GraphSmtpHandler.cs
+++ b/TwilioSMSReceiver.Common/MessageHandlers/GraphSmtpHandler.cs
@@ -0,0 +1,78 @@
+using System;
+using Azure.Identity;
+using Microsoft.Extensions.Configuration;
+using Microsoft.Extensions.Logging;
+using Microsoft.Graph;
+using TwilioSMSReceiver.Common.Interfaces;
+using TwilioSMSReceiver.Data.Models;
+
+namespace TwilioSMSReceiver.Common.MessageHandlers
+{
+	public class GraphSmtpHandler : IMessageHandler
+	{
+        protected readonly ILogger _logger;
+        protected readonly IConfiguration _configuration;
+
+        protected GraphServiceClient BuildGraphClient()
+        {
+            var section = _configuration.GetSection("GraphSmtp");
+            var tenantId = section["tenantId"];
+            var appId = section["appId"];
+            var secret = section["secret"];
+            var scopes = new[] { "https://graph.microsoft.com/.default" };
+
+            var options = new TokenCredentialOptions
+            {
+                AuthorityHost = AzureAuthorityHosts.AzurePublicCloud
+            };
+
+            var clientSecretCredential = new ClientSecretCredential(
+                tenantId, appId, secret, options);
+
+            return new GraphServiceClient(clientSecretCredential, scopes);
+        }
+
+        public GraphSmtpHandler(ILogger logger, IConfiguration configuration)
+		{
+            _configuration = configuration;
+            _logger = logger;
+		}
+
+        public async Task<bool> RelaySms(SMSModel model)
+        {
+            var message = new Message
+            {
+                Subject = $"Received SMS from {model.SenderNumber} to {model.SenderNumber}",
+                Body = new ItemBody
+                {
+                    ContentType = BodyType.Text,
+                    Content = model.MessageContents
+                },
+                ToRecipients = new List<Recipient>()
+    {
+        new Recipient
+        {
+            EmailAddress = new EmailAddress
+            {
+                Address = "frannis@contoso.onmicrosoft.com"
+            }
+        }
+    }
+            };
+
+            try
+            {
+                var graphClient = BuildGraphClient();
+                await graphClient.Me.SendMail(message).Request().PostAsync();
+
+                return true;
+            }
+            catch (Exception e)
+            {
+                _logger.LogWarning($"Error occured {e}");
+            }
+            return false;
+        }
+    }
+}
+