FF-1612: New flow element Set Working File

BasicNodes/File/SetWorkingFile.cs

@@ -0,0 +1,65 @@
+using FileFlows.Plugin;
+using FileFlows.Plugin.Attributes;
+
+namespace BasicNodes.File;
+
+/// <summary>
+/// Flow element that sets the working file
+/// </summary>
+public class SetWorkingFile : Node
+{
+    /// <inheritdoc />
+    public override int Inputs => 1;
+    /// <inheritdoc />
+    public override int Outputs => 1;
+    /// <inheritdoc />
+    public override FlowElementType Type => FlowElementType.Process;
+    /// <inheritdoc />
+    public override string Icon => "fas fa-file-invoice-dollar";
+    /// <inheritdoc />
+    public override string HelpUrl => "https://fileflows.com/docs/plugins/basic-nodes/set-working-file";
+
+    /// <summary>
+    /// Gets or sets the file to set as the working file
+    /// </summary>
+    [TextVariable(1)]
+    public string File { get; set; }
+    
+    /// <summary>
+    /// Gets or sets if the old temporary working file should not be deleted
+    /// </summary>
+    [Boolean(2)]
+    public bool DontDeletePrevious { get; set; }
+
+    /// <inheritdoc />
+    public override int Execute(NodeParameters args)
+    {
+        var file = args.ReplaceVariables(File ?? string.Empty, stripMissing: true);
+        if (string.IsNullOrWhiteSpace(file))
+        {
+            args.FailureReason = "No file set";
+            args.Logger?.ELog(args.FailureReason);
+            return -1;
+        }
+        
+        if (args.FileService.FileExists(file))
+        {
+            args.Logger?.ILog("Setting new working file to: " + file);
+            args.Logger?.ILog("Dont Delete Previous Temporary Working File: " + DontDeletePrevious);
+            args.SetWorkingFile(file, DontDeletePrevious);
+            return 1;
+        }
+        
+        if (args.FileService.DirectoryExists(file))
+        {
+            args.Logger?.ILog("Setting new working file to folder: " + file);
+            args.Logger?.ILog("Dont Delete Previous Temporary Working File: " + DontDeletePrevious);
+            args.SetWorkingFile(file, DontDeletePrevious);
+            return 1;
+        }
+        
+        args.FailureReason = $"File or Folder '{file}' does not exist";
+        args.Logger?.ELog(args.FailureReason);
+        return -1;
+    }
+}