FF-1646: Added support for sh/bat/ps1 scripts

BasicNodes/Scripting/PowerShellScript.cs

@@ -0,0 +1,127 @@
+using System.ComponentModel;
+using System.ComponentModel.DataAnnotations;
+using System.Diagnostics;
+using FileFlows.Plugin;
+using FileFlows.Plugin.Attributes;
+
+namespace FileFlows.BasicNodes.Scripting;
+
+/// <summary>
+/// Flow element that executes a PowerShell script
+/// </summary>
+public class PowerShellScript : Node
+{
+    /// <inheritdoc />
+    public override int Inputs => 1;
+    /// <inheritdoc />
+    public override int Outputs => 2;
+    /// <inheritdoc />
+    public override FlowElementType Type => FlowElementType.Process;
+    /// <inheritdoc />
+    public override string Icon => "svg:ps1";
+    /// <inheritdoc />
+    public override bool FailureNode => true;
+    /// <inheritdoc />
+    public override string HelpUrl => "https://fileflows.com/docs/plugins/basic-nodes/powershell-script";
+    
+    /// <summary>
+    /// Gets or sets the code to execute
+    /// </summary>
+    [Required]
+    [DefaultValue(@"# This is a template PowerShell script
+
+# Replace {file.FullName} and {file.Orig.FullName} with actual values
+$WorkingFile = '{file.FullName}'
+$OriginalFile = '{file.Orig.FullName}'
+
+# Example commands using the variables
+Write-Output ""Working on file: $WorkingFile""
+Write-Output ""Original file location: $OriginalFile""
+
+# Add your actual PowerShell commands below
+# Example: Copy the working file to a backup location
+# Copy-Item -Path $WorkingFile -Destination ""C:\Backup\$([System.IO.Path]::GetFileName($WorkingFile))""
+
+# Set the exit code to 0
+exit 0
+")]
+    [Code(1, "powershell")]
+    public string Code { get; set; }
+
+    /// <inheritdoc />
+    public override int Execute(NodeParameters args)
+    {
+        if (string.IsNullOrEmpty(Code))
+        {
+            args.FailureReason = "No code specified in PowerShell script";
+            args.Logger?.ELog(args.FailureReason);
+            return -1; // no code, flow cannot continue doesn't know what to do
+        }
+
+        if (OperatingSystem.IsWindows() == false)
+        {
+            args.FailureReason = "Cannot run a PowerShell file on a non Windows system";
+            args.Logger?.ELog(args.FailureReason);
+            return -1;
+        }
+        
+        var ps1File = System.IO.Path.Combine(args.TempPath, Guid.NewGuid() + ".ps1");
+
+        try
+        {
+            var code = args.ReplaceVariables(Code);
+            args.Logger?.ILog("Executing code: \n" + code);
+            System.IO.File.WriteAllText(ps1File, code);
+            args.Logger?.ILog($"Temporary PowerShell file created: {ps1File}");
+
+            var processStartInfo = new ProcessStartInfo
+            {
+                FileName = "powershell.exe",
+                Arguments = $"-NoProfile -ExecutionPolicy Bypass -File \"{ps1File}\"",
+                WorkingDirectory = args.TempPath,
+                RedirectStandardOutput = true,
+                RedirectStandardError = true,
+                UseShellExecute = false,
+                CreateNoWindow = true
+            };
+
+            using var process = new Process { StartInfo = processStartInfo };
+            process.Start();
+
+            string standardOutput = process.StandardOutput.ReadToEnd();
+            string standardError = process.StandardError.ReadToEnd();
+
+            process.WaitForExit();
+            int exitCode = process.ExitCode;
+            
+            if(string.IsNullOrWhiteSpace(standardOutput) == false)
+                args.Logger?.ILog($"Standard Output:\n{standardOutput}");
+            if(string.IsNullOrWhiteSpace(standardError) == false)
+                args.Logger?.WLog($"Standard Error:\n{standardError}");
+            args.Logger?.ILog($"Exit Code: {exitCode}");
+
+            return exitCode == 0 ? 1 : 2;
+        }
+        catch (Exception ex)
+        {
+            args.FailureReason = "Failed executing PowerShell script: " + ex.Message;
+            args.Logger?.ELog(args.FailureReason);
+            return -1;
+        }
+        finally
+        {
+            try
+            {
+                if (System.IO.File.Exists(ps1File))
+                {
+                    System.IO.File.Delete(ps1File);
+                    args.Logger?.ILog($"Temporary ps1 file deleted: {ps1File}");
+                }
+            }
+            catch (Exception ex)
+            {
+                args.Logger?.WLog($"Failed to delete temporary ps1 file: {ps1File}. Error: {ex.Message}");
+            }
+        }
+    }
+}