using Word = Microsoft.Office.Interop.Word;
    
    public class PyScriptForm : System.Windows.Forms.Form
    {
        private System.Windows.Forms.OpenFileDialog openFileDialog;
        private System.Windows.Forms.Button btnRun;
        private System.Windows.Forms.Button btnCancel;
        private System.Windows.Forms.Button btnBrowseForScript;
        private System.Windows.Forms.TextBox txtScriptFile;
        private System.Windows.Forms.TextBox txtArgs;
        private System.Windows.Forms.CheckBox chkCaptureStdOut;

        private readonly Word.Application __application;
        private const string DEFAULT_SCRIPT_DIRECTORY = 
                            @"C:\Program Files\Python\Python24\Scripts";

        public PyScriptForm( Word.Application application )
        {
            //
            // Required for Windows Form Designer support
            //
            InitializeComponent();

            __application = application;
        }
        
        private void BrowseForScript_Click(object sender, System.EventArgs e)
        {
            if ( this.openFileDialog.ShowDialog() == DialogResult.OK )
            {
                this.txtScriptFile.Clear();
                this.txtScriptFile.Focus();
                this.txtScriptFile.AppendText( openFileDialog.FileName);
            }
        }

        private void btnRun_Click(object sender, System.EventArgs e)
        {
            ProcessStartInfo startInfo;
            Process process;
            string directory;
            string pyArgs;
            string script;

            script = this.txtScriptFile.Text.Trim();

            if ( script == null || script.Length == 0 )
            {
                return;
            }

            try
            {
                directory = Path.GetDirectoryName( script );
                script = Path.GetFileName( script );
            }
            catch (ArgumentException)
            {
                MessageBox.Show("The script file path contains invalid characters.",
                                "Invalid Script Path",
                                MessageBoxButtons.OK, 
                                MessageBoxIcon.Error);
                return;
            }
                    
            if ( script.Length == 0 )
            {
                MessageBox.Show("No script file has been specified.",
                                "Invalid Script Path",
                                MessageBoxButtons.OK, 
                                MessageBoxIcon.Error);
                return;
            }

            if ( directory == null || directory.Length == 0 )
            {
                directory = DEFAULT_SCRIPT_DIRECTORY;
            }

            pyArgs = this.txtArgs.Text.Trim();

            startInfo = new ProcessStartInfo("python");
            startInfo.WorkingDirectory = directory;
            startInfo.Arguments = script + " " + pyArgs;
            startInfo.UseShellExecute = false;
            startInfo.CreateNoWindow = true;
            startInfo.RedirectStandardOutput = true;
            startInfo.RedirectStandardError = true;
            
            process = new Process();
            process.StartInfo = startInfo;
            process.Start();

            string s;
            while ((s = process.StandardOutput.ReadLine()) != null)
            {
                this.__application.Selection.TypeText( s + "\n" );
            }

            while ((s = process.StandardError.ReadLine()) != null)
            {
                this.__application.Selection.TypeText( s + "\n" );
            }
        }
    }