rnwood
diff --git a/‎README.md‎
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diff --git a/‎Rnwood.Smtp4dev/CommandLineOptions.cs‎
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diff --git a/‎Rnwood.Smtp4dev/CommandLineParser.cs‎
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diff --git a/‎Rnwood.Smtp4dev/Program.cs‎
Lines changed: 12 additions & 1 deletion b/‎Rnwood.Smtp4dev/Program.cs‎
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diff --git a/‎Rnwood.Smtp4dev/Rnwood.Smtp4dev.csproj‎
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diff --git a/‎Rnwood.Smtp4dev/TUI/DirectoryHelper.cs‎
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diff --git a/‎Rnwood.Smtp4dev/TUI/HtmlRenderer.cs‎
Lines changed: 63 additions & 0 deletions b/‎Rnwood.Smtp4dev/TUI/HtmlRenderer.cs‎
Lines changed: 63 additions & 0 deletions
@@ -7,6 +7,7 @@ smtp4dev support many advanced features:
 - OpenAPI/Swagger API
 - IMAP and POP3 access to retrieve and delete messages
 - SMTP session logging
+- **Terminal User Interface (TUI) mode with full functionality**
 - UTF8 support
 - Viewport size switcher to simulate mobile etc
 - Multipart MIME inspector
@@ -26,6 +27,7 @@ There are several fake SMTP servers available for development and testing. Here'
 | Feature | smtp4dev | MailHog¹ | MailCatcher² | MailDev³ | FakeSMTP⁴ |
 |---------|----------|----------|-------------|---------|-----------|
 | **Web Interface** | ✅ Advanced | ✅ Basic | ✅ Basic | ✅ Basic | ❌ Desktop GUI |
+| **Terminal UI (TUI)** | ✅ Full-featured | ❌ | ❌ | ❌ | ❌ |
 | **SMTP Server** | ✅ | ✅ | ✅ | ✅ | ✅ |
 | **IMAP Server** | ✅ | ❌ | ❌ | ❌ | ❌ |
 | **API (REST/OpenAPI)** | ✅ Swagger docs | ✅ Basic⁵ | ✅ RESTful⁶ | ✅ Basic⁷ | ❌ |
 
@@ -17,5 +17,6 @@ public class CommandLineOptions
         public string InstallPath { get; set; }
         public string ApplicationName { get; set; }
         public bool IsDesktopApp { get; set; }
+        public bool UseTui { get; set; }
     }
 }
@@ -71,6 +71,7 @@ public static MapOptions<CommandLineOptions> TryParseCommandLine(IEnumerable<str
                 { "tlsciphersuites=", "Specifies the TLS cipher suites to be allowed. Not supported on Windows. Separate with commas. See https://learn.microsoft.com/en-us/dotnet/api/system.net.security.tlsciphersuite?view=net-9.0", data => map.Add(data, x => x.ServerOptions.TlsCipherSuites) },
                 { "HtmlValidateConfigfile=", "Defines path to a config file used for HTML validation. See https://html-validate.org/usage/index.html#configuration", data => map.Add(File.ReadAllText(data), x => x.ServerOptions.HtmlValidateConfig) },
                 { "maxmessagesize=", "Defines the maximum message size in bytes accepted by the SMTP server", data => map.Add(data, x => x.ServerOptions.MaxMessageSize) },
+                { "tui", "Run with Terminal User Interface (TUI) instead of web interface", data => map.Add((data != null).ToString(), x => x.UseTui) },
                 { "delivertostdout=", "Specifies mailboxes (comma-separated) or '*' to output received raw message content to stdout", data => map.Add(data, x => x.ServerOptions.DeliverToStdout) },
                 { "exitafter=", "Specifies the number of messages to receive before exiting the application (used with delivertostdout)", data => map.Add(data, x => x.ServerOptions.ExitAfterMessages) }
             };
 
@@ -50,7 +50,18 @@ public static async Task Main(string[] args)
                 }
                 else
                 {
-                    await host.WaitForShutdownAsync();
+                    // Check if we should run TUI mode
+                    var cmdLineOptions = host.Services.GetRequiredService<CommandLineOptions>();
+                    if (cmdLineOptions.UseTui)
+                    {
+                        var dataDir = DirectoryHelper.GetDataDir(cmdLineOptions);
+                        var tuiApp = new Rnwood.Smtp4dev.TUI.TerminalGuiApp(host, dataDir);
+                        tuiApp.Run();
+                    }
+                    else
+                    {
+                        await host.WaitForShutdownAsync();
+                    }
                 }
                 Log.Information("Exiting");
             }
 
@@ -64,6 +64,8 @@
     <PackageReference Include="Serilog.Settings.Configuration" Version="9.0.0" />
     <PackageReference Include="Serilog.Sinks.Console" Version="6.0.0" />
     <PackageReference Include="Serilog.Sinks.EventLog" Version="4.0.0" />
+    <PackageReference Include="Terminal.Gui" Version="1.19.0" />
+    <PackageReference Include="Html2Markdown" Version="6.0.0.33" />
     <PackageReference Include="Serilog.Sinks.File" Version="6.0.0" />
     <PackageReference Include="StreamLib" Version="0.12.0" />
     <PackageReference Include="System.Linq.Dynamic.Core" Version="1.6.4" />
 
@@ -0,0 +1,28 @@
+using System;
+using System.IO;
+
+namespace Rnwood.Smtp4dev.TUI
+{
+    public static class DirectoryHelper
+    {
+        public static string GetDataDir(CommandLineOptions options)
+        {
+            string baseDataPath = options.BaseAppDataPath;
+            
+            if (string.IsNullOrEmpty(baseDataPath))
+            {
+                baseDataPath = Path.Combine(
+                    Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData),
+                    "smtp4dev"
+                );
+            }
+
+            if (!Directory.Exists(baseDataPath))
+            {
+                Directory.CreateDirectory(baseDataPath);
+            }
+
+            return baseDataPath;
+        }
+    }
+}
@@ -0,0 +1,63 @@
+using System;
+using System.Linq;
+using Html2Markdown;
+
+namespace Rnwood.Smtp4dev.TUI
+{
+    /// <summary>
+    /// Converts HTML content to readable terminal format
+    /// </summary>
+    public class HtmlRenderer
+    {
+        public HtmlRenderer()
+        {
+        }
+
+        public string ConvertHtmlToText(string html)
+        {
+            if (string.IsNullOrEmpty(html))
+                return string.Empty;
+
+            try
+            {
+                // Convert HTML to Markdown-like text for better terminal display
+                var converter = new Converter();
+                var text = converter.Convert(html);
+                
+                // Clean up excessive line breaks
+                while (text.Contains("\n\n\n"))
+                {
+                    text = text.Replace("\n\n\n", "\n\n");
+                }
+
+                return text.Trim();
+            }
+            catch (Exception ex)
+            {
+                return $"[HTML Content - Conversion Error: {ex.Message}]\n\n{StripHtmlTags(html)}";
+            }
+        }
+
+        private string StripHtmlTags(string html)
+        {
+            if (string.IsNullOrEmpty(html))
+                return string.Empty;
+
+            // Simple HTML tag removal
+            var text = System.Text.RegularExpressions.Regex.Replace(html, "<[^>]+>", "");
+            text = System.Net.WebUtility.HtmlDecode(text);
+            return text;
+        }
+
+        public bool IsHtmlContent(string content)
+        {
+            if (string.IsNullOrEmpty(content))
+                return false;
+
+            content = content.TrimStart();
+            return content.StartsWith("<html", StringComparison.OrdinalIgnoreCase) ||
+                   content.StartsWith("<!DOCTYPE html", StringComparison.OrdinalIgnoreCase) ||
+                   content.Contains("<body", StringComparison.OrdinalIgnoreCase);
+        }
+    }
+}
Original file line number	Diff line number	Diff line change
`@@ -17,5 +17,6 @@ public class CommandLineOptions`
`17`	`17`	`public string InstallPath { get; set; }`
`18`	`18`	`public string ApplicationName { get; set; }`
`19`	`19`	`public bool IsDesktopApp { get; set; }`
	`20`	`+ public bool UseTui { get; set; }`
`20`	`21`	`}`
`21`	`22`	`}`
Original file line number	Diff line number	Diff line change
`@@ -50,7 +50,18 @@ public static async Task Main(string[] args)`
`50`	`50`	`}`
`51`	`51`	`else`
`52`	`52`	`{`
`53`		`- await host.WaitForShutdownAsync();`
	`53`	`+ // Check if we should run TUI mode`
	`54`	`+ var cmdLineOptions = host.Services.GetRequiredService<CommandLineOptions>();`
	`55`	`+ if (cmdLineOptions.UseTui)`
	`56`	`+ {`
	`57`	`+ var dataDir = DirectoryHelper.GetDataDir(cmdLineOptions);`
	`58`	`+ var tuiApp = new Rnwood.Smtp4dev.TUI.TerminalGuiApp(host, dataDir);`
	`59`	`+ tuiApp.Run();`
	`60`	`+ }`
	`61`	`+ else`
	`62`	`+ {`
	`63`	`+ await host.WaitForShutdownAsync();`
	`64`	`+ }`
`54`	`65`	`}`
`55`	`66`	`Log.Information("Exiting");`
`56`	`67`	`}`