From 2862c3892e32ca0ef21705f21099d0a8c74f35dc Mon Sep 17 00:00:00 2001
From: Demis Bellot <demis.bellot@gmail.com>
Date: Thu, 5 Sep 2024 10:32:44 +0800
Subject: [PATCH] Add Configure.Smtp.cs

---
 MyApp/Configure.Smtp.cs | 31 +++++++++++++++++++++++++++++++
 1 file changed, 31 insertions(+)
 create mode 100644 MyApp/Configure.Smtp.cs

diff --git a/MyApp/Configure.Smtp.cs b/MyApp/Configure.Smtp.cs
new file mode 100644
index 0000000..6cf03b1
--- /dev/null
+++ b/MyApp/Configure.Smtp.cs
@@ -0,0 +1,31 @@
+using MyApp.ServiceInterface;
+
+[assembly: HostingStartup(typeof(MyApp.ConfigureSmtp))]
+
+namespace MyApp;
+
+public class ConfigureSmtp : IHostingStartup
+{
+    public void Configure(IWebHostBuilder builder) => builder
+        .ConfigureServices((context,services) => {
+            var smtpConfig = context.Configuration.GetSection(nameof(SmtpConfig))?.Get<SmtpConfig>();
+            if (smtpConfig is not null)
+            {
+                services.AddSingleton(smtpConfig);
+            }
+        })
+        .ConfigureAppHost(appHost => {
+            // Check if SMTP is configured
+            var smtpConfig = appHost.TryResolve<SmtpConfig>();
+            var log = appHost.GetApplicationServices().GetRequiredService<ILogger<ConfigureSmtp>>();
+            // Log if missing
+            if (smtpConfig is null)
+            {
+                log.LogWarning("SMTP is not configured, please configure SMTP to enable sending emails");
+            }
+            else
+            {
+                log.LogWarning("SMTP is configured with <{SmtpConfigFromEmail}> {SmtpConfigFromName}", smtpConfig.FromEmail, smtpConfig.FromName);
+            }
+        });
+}
\ No newline at end of file