From ebbf2c858acf3e220357405c4deffcd1d75694a5 Mon Sep 17 00:00:00 2001
From: Daniel-I-Am <djdecloet@gmail.com>
Date: Thu, 3 Sep 2020 23:14:08 +0200
Subject: [PATCH] Get basic Lua interpreter set up

---
 ChaosBot/ChaosBot.csproj                       |  1 +
 .../Discord/Services/CustomCommandHandler.cs   |  4 +++-
 .../IProgrammingLanguageInterpreter.cs         |  2 +-
 .../LuaProgrammingLanguageInterpreter.cs       | 18 +++++++++++++++---
 .../ProgrammingLanguageInterpreterFacade.cs    |  6 ++++--
 .../ProgrammingLanguageInterpreterFactory.cs   |  2 +-
 6 files changed, 25 insertions(+), 8 deletions(-)

diff --git a/ChaosBot/ChaosBot.csproj b/ChaosBot/ChaosBot.csproj
index c1053c2..c1612dd 100644
--- a/ChaosBot/ChaosBot.csproj
+++ b/ChaosBot/ChaosBot.csproj
@@ -16,6 +16,7 @@
       <PackageReference Include="Microsoft.EntityFrameworkCore.Tools" Version="3.1.6" />
       <PackageReference Include="Microsoft.Extensions.Configuration" Version="3.1.6" />
       <PackageReference Include="Microsoft.Extensions.Configuration.Json" Version="3.1.6" />
+      <PackageReference Include="NeoLua" Version="1.3.11" />
       <PackageReference Include="NLog" Version="4.7.2" />
       <PackageReference Include="NLog.Extensions.Logging" Version="1.6.4" />
       <PackageReference Include="Pomelo.EntityFrameworkCore.MySql" Version="3.1.2" />
diff --git a/ChaosBot/Discord/Services/CustomCommandHandler.cs b/ChaosBot/Discord/Services/CustomCommandHandler.cs
index 00b536a..c406ac8 100644
--- a/ChaosBot/Discord/Services/CustomCommandHandler.cs
+++ b/ChaosBot/Discord/Services/CustomCommandHandler.cs
@@ -2,6 +2,7 @@ using System;
 using System.Linq;
 using System.Threading.Tasks;
 using ChaosBot.Models;
+using ChaosBot.Services.ProgrammingLanguageInterpreter;
 using Discord.Commands;
 
 namespace ChaosBot.Discord.Services
@@ -30,7 +31,8 @@ namespace ChaosBot.Discord.Services
                 }
                 else
                 {
-                    throw new NotImplementedException($"No support for command type ${customCommand.Type}");
+                    if (!ProgrammingLanguageInterpreterFacade.TryInterpret(customCommand))
+                        throw new NotImplementedException($"No support for command type ${customCommand.Type}");
                 }
 
                 return true;
diff --git a/ChaosBot/Services/ProgrammingLanguageInterpreter/IProgrammingLanguageInterpreter.cs b/ChaosBot/Services/ProgrammingLanguageInterpreter/IProgrammingLanguageInterpreter.cs
index 10372de..eca64a5 100644
--- a/ChaosBot/Services/ProgrammingLanguageInterpreter/IProgrammingLanguageInterpreter.cs
+++ b/ChaosBot/Services/ProgrammingLanguageInterpreter/IProgrammingLanguageInterpreter.cs
@@ -2,6 +2,6 @@ namespace ChaosBot.Services.ProgrammingLanguageInterpreter
 {
     public interface IProgrammingLanguageInterpreter
     {
-        void Interpret(string content);
+        void Interpret(string content, string command);
     }
 }
diff --git a/ChaosBot/Services/ProgrammingLanguageInterpreter/LuaProgrammingLanguageInterpreter.cs b/ChaosBot/Services/ProgrammingLanguageInterpreter/LuaProgrammingLanguageInterpreter.cs
index 9ea1aba..a7e5363 100644
--- a/ChaosBot/Services/ProgrammingLanguageInterpreter/LuaProgrammingLanguageInterpreter.cs
+++ b/ChaosBot/Services/ProgrammingLanguageInterpreter/LuaProgrammingLanguageInterpreter.cs
@@ -1,4 +1,5 @@
-using System;
+using System.Text.RegularExpressions;
+using Neo.IronLua;
 using NLog;
 
 namespace ChaosBot.Services.ProgrammingLanguageInterpreter
@@ -7,9 +8,20 @@ namespace ChaosBot.Services.ProgrammingLanguageInterpreter
     {
         private static readonly ILogger Logger = Program.GetLogger();
         
-        public void Interpret(string content)
+        public void Interpret(string content, string command)
         {
-            throw new NotImplementedException();
+            using (Lua lua = new Lua())
+            {
+                // This needs to be dynamic if we want to call
+                // functions from within the lua environment
+                // This is a runtime type check
+                dynamic env = lua.CreateEnvironment();
+
+                foreach (string line in (new Regex("\n")).Split(content))
+                {
+                    env.dochunk(line, $"{command}.lua");
+                }
+            }
         }
     }
 }
diff --git a/ChaosBot/Services/ProgrammingLanguageInterpreter/ProgrammingLanguageInterpreterFacade.cs b/ChaosBot/Services/ProgrammingLanguageInterpreter/ProgrammingLanguageInterpreterFacade.cs
index dd88949..3746908 100644
--- a/ChaosBot/Services/ProgrammingLanguageInterpreter/ProgrammingLanguageInterpreterFacade.cs
+++ b/ChaosBot/Services/ProgrammingLanguageInterpreter/ProgrammingLanguageInterpreterFacade.cs
@@ -4,12 +4,14 @@ namespace ChaosBot.Services.ProgrammingLanguageInterpreter
 {
     public static class ProgrammingLanguageInterpreterFacade
     {
-        public static void Interpret(CustomCommand customCommand)
+        public static bool TryInterpret(CustomCommand customCommand)
         {
             IProgrammingLanguageInterpreter interpreter =
                 ProgrammingLanguageInterpreterFactory.GetInterpreter(customCommand.Type);
+            if (interpreter == null) return false;
             
-            interpreter.Interpret(customCommand.Content);
+            interpreter.Interpret(customCommand.Content, customCommand.Command);
+            return true;
         }
     }
 }
diff --git a/ChaosBot/Services/ProgrammingLanguageInterpreter/ProgrammingLanguageInterpreterFactory.cs b/ChaosBot/Services/ProgrammingLanguageInterpreter/ProgrammingLanguageInterpreterFactory.cs
index de2b345..d27cbc2 100644
--- a/ChaosBot/Services/ProgrammingLanguageInterpreter/ProgrammingLanguageInterpreterFactory.cs
+++ b/ChaosBot/Services/ProgrammingLanguageInterpreter/ProgrammingLanguageInterpreterFactory.cs
@@ -11,7 +11,7 @@ namespace ChaosBot.Services.ProgrammingLanguageInterpreter
                 case CustomCommandType.CustomLua:
                     return new LuaProgrammingLanguageInterpreter();
                 default:
-                    return new LuaProgrammingLanguageInterpreter();
+                    return null;
             }
         }
     }