Added support for exporting chat templates & profiles (#772)

app/SharedTools/LuaTools.cs

@@ -2,9 +2,49 @@ namespace SharedTools;
 
 public static class LuaTools
 {
-    public static string EscapeLuaString(string value)
+    public static string EscapeLuaString(string? value)
     {
+        if (string.IsNullOrEmpty(value))
+            return string.Empty;
+
         // Replace backslashes with double backslashes and escape double quotes:
-        return value.Replace("\\", @"\\").Replace("\"", "\\\"");
+        return value
+            .Replace("\\", @"\\")
+            .Replace("\"", "\\\"")
+            .Replace("\r", "\\r")
+            .Replace("\n", "\\n");
+    }
+
+    public static string ToLuaStringLiteral(string? value, bool forceLongString = false, int longStringLengthThreshold = 80)
+    {
+        value ??= string.Empty;
+        if (!forceLongString &&
+            value.Length <= longStringLengthThreshold &&
+            !value.Contains('\n') &&
+            !value.Contains('\r'))
+            return $"\"{EscapeLuaString(value)}\"";
+
+        return $"{CreateLongStringOpeningDelimiter(value)}{value}{CreateLongStringClosingDelimiter(value)}";
+    }
+
+    private static string CreateLongStringOpeningDelimiter(string value)
+    {
+        var equals = CreateLongStringEquals(value);
+        return $"[{equals}[";
+    }
+
+    private static string CreateLongStringClosingDelimiter(string value)
+    {
+        var equals = CreateLongStringEquals(value);
+        return $"]{equals}]";
+    }
+
+    private static string CreateLongStringEquals(string value)
+    {
+        var equalsCount = 3;
+        while (value.Contains($"]{new string('=', equalsCount)}]"))
+            equalsCount++;
+
+        return new string('=', equalsCount);
     }
 }