[server] Add UniqueLineId to DrawnLine & use NCuid for id generation.

Also remove ChunkReference.Parse, as we're using JSON now

Next ContinuesIn/From need to be updated to use the new property.

Nibriboard/Nibriboard.csproj

@@ -56,6 +56,9 @@
     <Reference Include="SharpCompress">
       <HintPath>..\packages\SharpCompress.0.18.2\lib\net45\SharpCompress.dll</HintPath>
     </Reference>
+    <Reference Include="NCuid">
+      <HintPath>..\packages\NCuid.1.0.0\lib\net40\NCuid.dll</HintPath>
+    </Reference>
   </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="lib\GlidingSquirrel\GlidingSquirrel\GlidingSquirrel.csproj">

Nibriboard/RippleSpace/ChunkReference.cs

@@ -82,24 +82,6 @@ namespace Nibriboard.RippleSpace
 			return $"ChunkReference: {base.ToString()}";
 		}
 
-		public static ChunkReference Parse(Plane plane, string source)
-		{
-			if (!source.StartsWith("ChunkReference:"))
-				throw new InvalidDataException($"Error: That isn't a valid chunk reference. Chunk references start with 'ChunkReference:'.");
-
-			// Trim the extras off the reference
-			source = source.Substring("ChunkReference:".Length);
-			source = source.Trim("() \v\t\r\n".ToCharArray());
-
-			int x = int.Parse(source.Substring(0, source.IndexOf(",")));
-			int y = int.Parse(source.Substring(source.IndexOf(",") + 1));
-			return new ChunkReference(
-				plane,
-				x,
-				y
-			);
-		}
-
 		/// <summary>
 		/// Returns a clone of this ChunkReference.
 		/// </summary>

Nibriboard/RippleSpace/DrawnLine.cs

@@ -14,7 +14,14 @@ namespace Nibriboard.RippleSpace
 	public class DrawnLine
 	{
 		/// <summary>
-		/// The id of line that this <see cref="NibriboardServer.RippleSpace.DrawnLine" /> is part of.
+		/// This line (fragment?)'s unique id. Should be globally unique - please blow up
+		/// if it isn't!
+		/// </summary>
+		[JsonProperty]
+		public readonly string UniqueId = NCuid.Cuid.Generate();
+
+		/// <summary>
+		/// The id of line that this <see cref="DrawnLine" /> is part of.
 		/// Note that this id may not be unique - several lines that were all
 		/// drawn at once may also have the same id. This is such that a single
 		/// line that was split across multiple chunks can still be referenced and

Nibriboard/packages.config

@@ -1,6 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
   <package id="MimeSharp" version="1.0.0" targetFramework="net45" />
+  <package id="NCuid" version="1.0.0" targetFramework="net461" />
   <package id="Newtonsoft.Json" version="10.0.3" targetFramework="net461" />
   <package id="SharpCompress" version="0.18.2" targetFramework="net461" />
 </packages>