Adds presistence to log replaces

Tools/BiblioTech/CommandHandler.cs

@@ -70,7 +70,7 @@ namespace BiblioTech
             {
                 var json = JsonConvert.SerializeObject(exception.Errors, Formatting.Indented);
                 log.Error(json);
-                throw exception;
+                throw;
             }
             log.Log("Initialized.");
         }

Tools/BiblioTech/Program.cs

@@ -11,7 +11,7 @@ namespace BiblioTech
     public class Program
     {
         private DiscordSocketClient client = null!;
-        private readonly CustomReplacement replacement = new CustomReplacement();
+        private CustomReplacement replacement = null!;
 
         public static Configuration Config { get; private set; } = null!;
         public static UserRepo UserRepo { get; } = new UserRepo();
@@ -42,6 +42,17 @@ namespace BiblioTech
         public async Task MainAsync(string[] args)
         {
             Log.Log("Starting Codex Discord Bot...");
+            try
+            {
+                replacement = new CustomReplacement(Config);
+                replacement.Load();
+            }
+            catch (Exception ex)
+            {
+                Log.Error("Failed to load logReplacements: " + ex);
+                throw;
+            }
+
             if (Config.DebugNoDiscord)
             {
                 Log.Log("Debug option is set. Discord connection disabled!");

Tools/BiblioTech/Rewards/CustomReplacement.cs

@@ -1,8 +1,30 @@
-namespace BiblioTech.Rewards
+using Newtonsoft.Json;
+
+namespace BiblioTech.Rewards
 {
     public class CustomReplacement
     {
         private readonly Dictionary<string, string> replacements = new Dictionary<string, string>();
+        private readonly string file;
+
+        public CustomReplacement(Configuration config)
+        {
+            file = Path.Combine(config.DataPath, "logreplacements.json");
+        }
+
+        public void Load()
+        {
+            replacements.Clear();
+            if (!File.Exists(file)) return;
+
+            var replaces = JsonConvert.DeserializeObject<ReplaceJson[]>(File.ReadAllText(file));
+            if (replaces == null) return;
+
+            foreach (var replace in replaces)
+            {
+                replacements.Add(replace.From, replace.To);
+            }
+        }
 
         public void Add(string from, string to)
         {
@@ -14,11 +36,13 @@
             {
                 replacements.Add(from, to);
             }
+            Save();
         }
 
         public void Remove(string from)
         {
             replacements.Remove(from);
+            Save();
         }
 
         public string Apply(string msg)
@@ -30,5 +54,25 @@
             }
             return result;
         }
+
+        private void Save()
+        {
+            ReplaceJson[] replaces = replacements.Select(pair =>
+            {
+                return new ReplaceJson
+                {
+                    From = pair.Key,
+                    To = pair.Value
+                };
+            }).ToArray();
+
+            File.WriteAllText(file, JsonConvert.SerializeObject(replaces));
+        }
+
+        private class ReplaceJson
+        {
+            public string From { get; set; } = string.Empty;
+            public string To { get; set; } = string.Empty;
+        }
     }
 }