Improve CLI help output

DiscordChatExporter.Cli/Program.cs

@@ -9,6 +9,39 @@ namespace DiscordChatExporter.Cli
     {
         private static readonly Container Container = new Container();
 
+        private static void ShowHelp()
+        {
+            var version = Assembly.GetExecutingAssembly().GetName().Version;
+
+            Console.WriteLine($"=== Discord Chat Exporter (Command Line Interface) v{version} ===");
+            Console.WriteLine();
+            Console.WriteLine("[-t] [--token]       Discord authorization token.");
+            Console.WriteLine("[-c] [--channel]     Discord channel ID.");
+            Console.WriteLine("[-f] [--format]      Export format (PlainText/HtmlDark/HtmlLight). Optional.");
+            Console.WriteLine("[-o] [--output]      Output file path. Optional.");
+            Console.WriteLine("     [--datefrom]    Limit to messages after this date. Optional.");
+            Console.WriteLine("     [--dateto]      Limit to messages before this date. Optional.");
+            Console.WriteLine("     [--dateformat]  Date format. Optional.");
+            Console.WriteLine("     [--grouplimit]  Message group limit. Optional.");
+            Console.WriteLine();
+            Console.WriteLine("# To get authorization token:");
+            Console.WriteLine(" - Open Discord app");
+            Console.WriteLine(" - Log in if you haven't");
+            Console.WriteLine(" - Press Ctrl+Shift+I");
+            Console.WriteLine(" - Navigate to Application tab");
+            Console.WriteLine(" - Expand Storage > Local Storage > https://discordapp.com");
+            Console.WriteLine(" - Find \"token\" under key and copy the value");
+            Console.WriteLine();
+            Console.WriteLine("# To get channel ID:");
+            Console.WriteLine(" - Open Discord app");
+            Console.WriteLine(" - Log in if you haven't");
+            Console.WriteLine(" - Go to any channel you want to export");
+            Console.WriteLine(" - Press Ctrl+Shift+I");
+            Console.WriteLine(" - Navigate to Console tab");
+            Console.WriteLine(" - Type \"document.URL\" and press Enter");
+            Console.WriteLine(" - Copy the long sequence of numbers after last slash");
+        }
+
         private static CliOptions ParseOptions(string[] args)
         {
             var argsParser = new FluentCommandLineParser<CliOptions>();
@@ -29,17 +62,7 @@ namespace DiscordChatExporter.Cli
             // Show help if no arguments
             if (parsed.EmptyArgs)
             {
-                var version = Assembly.GetExecutingAssembly().GetName().Version;
+                ShowHelp();
-                Console.WriteLine($"=== Discord Chat Exporter (Command Line Interface) v{version} ===");
-                Console.WriteLine();
-                Console.WriteLine("[-t] [--token]       Discord authorization token.");
-                Console.WriteLine("[-c] [--channel]     Discord channel ID.");
-                Console.WriteLine("[-f] [--format]      Export format (PlainText/HtmlDark/HtmlLight). Optional.");
-                Console.WriteLine("[-o] [--output]      Output file path. Optional.");
-                Console.WriteLine("     [--datefrom]    Limit to messages after this date. Optional.");
-                Console.WriteLine("     [--dateto]      Limit to messages before this date. Optional.");
-                Console.WriteLine("     [--dateformat]  Date format. Optional.");
-                Console.WriteLine("     [--grouplimit]  Message group limit. Optional.");
                 Environment.Exit(0);
             }
             // Show error if there are any
@@ -77,6 +100,7 @@ namespace DiscordChatExporter.Cli
 
             // Cleanup container
             Container.Cleanup();
+
             Console.WriteLine("Export complete.");
         }
     }