Smooth out potential issues using ResetDevSite (#5310)

* Ensure full db path is used

SQL Server can't handle paths with forward slashes instead of
backslashes

* Proactively validate DnnConnectionString setting

Build/Tasks/CopyWebConfigToDevSite.cs

@@ -17,6 +17,11 @@ public sealed class CopyWebConfigToDevSite : FrostingTask<Context>
         /// <inheritdoc/>
         public override void Run(Context context)
         {
+            if (string.IsNullOrWhiteSpace(context.Settings.DnnConnectionString))
+            {
+                throw new InvalidOperationException("DnnConnectionString was blank and must have a value when the CopyWebConfigToDevSite task is run");
+            }
+
             var conf = context.FileReadText("./Website/web.config");
             var transFile = "./Build/Tasks/webconfig-transform.local.xsl";
             if (!context.FileExists(transFile))

Build/Tasks/ResetDatabase.cs

@@ -5,6 +5,7 @@ namespace DotNetNuke.Build.Tasks
 {
     using System;
     using System.Data.SqlClient;
+    using System.IO;
     using System.Linq;
 
     using Cake.Common.Diagnostics;
@@ -46,8 +47,12 @@ private static string LoadScript(ICakeContext context, string scriptName)
 
         private static string ReplaceScriptVariables(Context context, string script)
         {
+            var dbPath = context.FileSystem.GetDirectory(context.Settings.DatabasePath);
+            dbPath.Create();
+            var fullDbPath = Path.GetFullPath(dbPath.Path.FullPath);
+
             return script.Replace("{DBName}", context.Settings.DnnDatabaseName)
-                .Replace("{DBPath}", context.Settings.DatabasePath)
+                .Replace("{DBPath}", fullDbPath)
                 .Replace("{DBLogin}", context.Settings.DnnSqlUsername);
         }