Added comments; refactored code.

PhishyScanConsole/Email.cs

@@ -1,5 +1,7 @@
 namespace PhishyScanConsole;
-
+/// <summary>
+/// Email structure.
+/// </summary>
 public struct Email
 {
     public string Address;

PhishyScanConsole/EmailSecurityLevel.cs

@@ -1,8 +1,20 @@
 // See https://aka.ms/new-console-template for more information
 
+/// <summary>
+/// Email security level.
+/// </summary>
 public enum EmailSecurityLevel
 {
+    /// <summary>
+    /// Passed indicates that the email passed all checks for phishing.
+    /// </summary>
     Passed,
+    /// <summary>
+    /// Warn indicates that the email passed all checks for known phishing, but some of the submitted data was suspicious.
+    /// </summary>
     Warn,
+    /// <summary>
+    /// Failed indicates that the email failed at least one check for known phishing.
+    /// </summary>
     Failed
 }

PhishyScanConsole/EmailSecurityResult.cs

@@ -1,5 +1,8 @@
 // See https://aka.ms/new-console-template for more information
 
+/// <summary>
+/// Email security level.
+/// </summary>
 public class EmailSecurityResult
 {
     public EmailSecurityLevel Level;

PhishyScanConsole/Models/CommandLineArguments.cs

@@ -6,6 +6,9 @@
 using CommandLine;
 namespace PhishyScanConsole.Models
 {
+    /// <summary>
+    /// Command line arguments configuration settings for the PhishyScanConsole application.
+    /// </summary>
     public class CommandLineArguments: IConfiguration
     {
 

PhishyScanConsole/Models/IConfiguration.cs

@@ -6,6 +6,9 @@
 using Config.Net;
 namespace PhishyScanConsole.Models
 {
+    /// <summary>
+    /// Interface for configuration settings
+    /// </summary>
     public interface IConfiguration
     {
         [Option(Alias = "host.verbose")]

PhishyScanConsole/Program.cs

@@ -11,24 +11,28 @@
 using Flurl.Http;
 using System.Configuration;
 
+// Scan endpoint for the PhishyScan API.
 const string PhishyScanEndpoint = "/scan";
+// Default configuration file name.
 const string DefaultConfigurationFile = "config.ini";
+// Maximum content length to scan (messages longer than this will be truncated).
 const int MaximumContentLength = 4097;
 Parser.Default.ParseArguments<CommandLineArguments>(args).WithParsed(ops =>
 {
-
     try
     {
+        // Load configuration from file.
         var configurationFile = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, DefaultConfigurationFile);
 
         if (File.Exists(configurationFile))
         {
             var configuration = new ConfigurationBuilder<IConfiguration>()
                 .UseIniFile(configurationFile)
                 .Build();
-
+            // If verbose is enabled, print the configuration file name.
             if ((bool)configuration?.Verbose) Console.WriteLine($"Configuration loaded from file: {Path.GetFileName(configurationFile)}");
-
+            
+            // Parse command line arguments. If a command line argument is specified, it will override a configuration file value.
             Parser.Default.ParseArguments<CommandLineArguments>(args)
                 .WithParsed(o =>
                 {
@@ -51,6 +55,7 @@
     catch (Exception ex)
     {
         Console.WriteLine($"Error loading configuration file: {ex.Message}");
+        return;
     }
 
     if (ops?.Host == null)