tmp commit of cli

MultiversalDiplomacy/CommandLine/AdjudicateOptions.cs

@@ -1,5 +1,9 @@
+using System.Text.Json;
+
 using CommandLine;
 
+using MultiversalDiplomacy.Model;
+
 namespace MultiversalDiplomacy.CommandLine;
 
 [Verb("adjudicate", HelpText = "Adjudicate a Multiversal Diplomacy game state.")]
@@ -10,6 +14,13 @@ public class AdjudicateOptions
 
     public static void Execute(AdjudicateOptions args)
     {
+        Stream input = args.InputFile switch {
+            null => Console.OpenStandardInput(),
+            "-" => Console.OpenStandardInput(),
+            _ => new FileStream(args.InputFile!, FileMode.Open, FileAccess.Read),
+        };
+        var state = JsonSerializer.Deserialize<World>(input);
+
         throw new NotImplementedException();
     }
 }

MultiversalDiplomacy/CommandLine/ImageOptions.cs

@@ -0,0 +1,15 @@
+using CommandLine;
+
+namespace MultiversalDiplomacy.CommandLine;
+
+[Verb("image", HelpText = "Generate an image of a game state.")]
+public class ImageOptions
+{
+    [Value(0, HelpText = "Input file describing the game state to visualize, or - to read from stdin.")]
+    public string? InputFile { get; set; }
+
+    public static void Execute(ImageOptions args)
+    {
+        throw new NotImplementedException();
+    }
+}

MultiversalDiplomacy/CommandLine/ReplOptions.cs

@@ -0,0 +1,18 @@
+using CommandLine;
+
+namespace MultiversalDiplomacy.CommandLine;
+
+[Verb("repl", HelpText = "Begin an interactive 5dplomacy session.")]
+public class ReplOptions
+{
+    [Option('i', "input", HelpText = "Begin the repl session by executing the commands in this file.")]
+    public string? InputFile { get; set; }
+
+    [Option('o', "output", HelpText = "Echo the repl session to this file. Specify a directory to autogenerate a filename.")]
+    public string? OutputFile { get; set; }
+
+    public static void Execute(ReplOptions args)
+    {
+        throw new NotImplementedException();
+    }
+}

MultiversalDiplomacy/Program.cs

@@ -9,9 +9,15 @@ internal class Program
     static void Main(string[] args)
     {
         var parser = Parser.Default;
-        var parseResult = parser.ParseArguments<AdjudicateOptions>(args);
+        var parseResult = parser.ParseArguments(
+            args,
+            typeof(AdjudicateOptions),
+            typeof(ImageOptions),
+            typeof(ReplOptions));
 
         parseResult
-            .WithParsed(AdjudicateOptions.Execute);
+            .WithParsed<AdjudicateOptions>(AdjudicateOptions.Execute)
+            .WithParsed<ImageOptions>(ImageOptions.Execute)
+            .WithParsed<ReplOptions>(ReplOptions.Execute);
     }
 }

MultiversalDiplomacy/Script/IScriptHandler.cs

@@ -0,0 +1,21 @@
+namespace MultiversalDiplomacy.Script;
+
+/// <summary>
+/// A handler that interprets and executes 5dp script commands. Script handlers may create additional script handlers
+/// and delegate handling to them, allowing a sort of recursive parsing of script commands.
+/// </summary>
+public interface IScriptHandler
+{
+    /// <summary>
+    /// When used interactively, the prompt that should be displayed.
+    /// </summary>
+    public string Prompt { get; }
+
+    /// <summary>
+    /// Process a line of input.
+    /// </summary>
+    /// <returns>
+    /// The handler that should handle the next line of input, or null if script handling should end.
+    /// </returns>
+    public IScriptHandler? HandleInput(string input);
+}

MultiversalDiplomacy/Script/ReplScriptHandler.cs

@@ -0,0 +1,60 @@
+using MultiversalDiplomacy.Model;
+
+namespace MultiversalDiplomacy.Script;
+
+/// <summary>
+/// A script handler for the interactive repl.
+/// </summary>
+public class ReplScriptHandler : IScriptHandler
+{
+    public string Prompt => "5dp> ";
+
+    public IScriptHandler? HandleInput(string input)
+    {
+        var args = input.Split(' ', StringSplitOptions.RemoveEmptyEntries);
+        if (args.Length == 0)
+        {
+            return this;
+        }
+
+        var command = args[0];
+        switch (command)
+        {
+            case "help":
+            case "?":
+                Console.WriteLine("Commands:");
+                Console.WriteLine("  help, ?: print this message");
+                Console.WriteLine("  stab: stab");
+                Console.WriteLine("  new: start a new game");
+                break;
+
+            case "stab":
+                Console.WriteLine("stab");
+                break;
+
+            case "new" when args.Length == 1:
+                Console.WriteLine("Usage:");
+                Console.WriteLine("  new [map]");
+                Console.WriteLine("Available maps:");
+		Console.WriteLine(string.Join(", ", Enum.GetNames<MapType>().Select(s => s.ToLowerInvariant())));
+                break;
+
+	    case "new" when args.Length > 1:
+                if (!Enum.TryParse<MapType>(args[1], out MapType map)) {
+		    Console.WriteLine($"Unknown map {args[1]}");
+		    Console.WriteLine("Available maps:");
+                    Console.WriteLine(string.Join(", ", Enum.GetNames<MapType>().Select(s => s.ToLowerInvariant())));
+		    break;
+		}
+		World world = World.WithMap(Map.FromType(map));
+		Console.WriteLine($"Created a new {map} game");
+		return this;
+
+            default:
+                Console.WriteLine($"Unrecognized command: {command}");
+                break;
+        }
+
+        return this;
+    }
+}