//
// (C) Copyright 2003-2019 by Autodesk, Inc.
//
// Permission to use, copy, modify, and distribute this software in
// object code form for any purpose and without fee is hereby granted,
// provided that the above copyright notice appears in all copies and
// that both that copyright notice and the limited warranty and
// restricted rights notice below appear in all supporting
// documentation.
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// DOES NOT WARRANT THAT THE OPERATION OF THE PROGRAM WILL BE
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// Use, duplication, or disclosure by the U.S. Government is subject to
// restrictions set forth in FAR 52.227-19 (Commercial Computer
// Software - Restricted Rights) and DFAR 252.227-7013(c)(1)(ii)
// (Rights in Technical Data and Computer Software), as applicable.
//


using System;
using System.Text;
using System.IO;
using System.Collections.Generic;

using Autodesk.Revit;
using Autodesk.Revit.DB;
using Autodesk.Revit.UI;

namespace Revit.SDK.Samples.PrintLog.CS
{
    /// <summary>
    /// Class used to call API to raise ViewPrint and DocumentPrint events
    /// </summary>
    [Autodesk.Revit.Attributes.Transaction(Autodesk.Revit.Attributes.TransactionMode.Manual)]
    [Autodesk.Revit.Attributes.Regeneration(Autodesk.Revit.Attributes.RegenerationOption.Manual)]
    [Autodesk.Revit.Attributes.Journaling(Autodesk.Revit.Attributes.JournalingMode.NoCommandData)]
    public class Command: IExternalCommand
    {
        #region IExternalCommand Members
        /// <summary>
        /// Implement this method as an external command for Revit.
        /// </summary>
        /// <param name="commandData">An object that is passed to the external application
        /// which contains data related to the command,
        /// such as the application object and active view.</param>
        /// <param name="message">A message that can be set by the external application
        /// which will be displayed if a failure or cancellation is returned by
        /// the external command.</param>
        /// <param name="elements">A set of elements to which the external application
        /// can add elements that are to be highlighted in case of failure or cancellation.</param>
        /// <returns>Return the status of the external command.
        /// A result of Succeeded means that the API external method functioned as expected.
        /// Cancelled can be used to signify that the user cancelled the external operation 
        /// at some point. Failure should be returned if the application is unable to proceed with
        /// the operation.</returns>
        public Autodesk.Revit.UI.Result Execute(ExternalCommandData commandData, 
            ref string message, Autodesk.Revit.DB.ElementSet elements)
        {
            // Filter all printable views in current document and print them,
            // the print will raise events registered in controlled application.
            // After run this external command please refer to log files under folder of this assembly.
            Document document = commandData.Application.ActiveUIDocument.Document;
            try
            {
                List<Autodesk.Revit.DB.Element> viewElems = new List<Autodesk.Revit.DB.Element>();
                FilteredElementCollector collector = new FilteredElementCollector(document);
                viewElems.AddRange(collector.OfClass(typeof(View)).ToElements());
                //
                // Filter all printable views 
                ViewSet printableViews = new ViewSet();
                foreach (View view in viewElems)
                {
                    // skip view templates because they're invalid for print
                    if (!view.IsTemplate && view.CanBePrinted)
                    {
                        printableViews.Insert(view);
                    }
                }
                // 
                // Print to file to folder of assembly
                String assemblyPath = Path.GetDirectoryName(System.Reflection.Assembly.GetExecutingAssembly().Location);
                PrintManager pm = document.PrintManager;
                pm.PrintToFile = true;
                pm.PrintToFileName = assemblyPath + "\\PrintOut.prn";
                pm.Apply();
                // 
                // Print views now to raise events:
                document.Print(printableViews);
            }
            catch(Exception ex)
            {
                message = ex.Message;
                return Autodesk.Revit.UI.Result.Failed;
            }
            //
            // return succeed by default
            return Autodesk.Revit.UI.Result.Succeeded;
        }
        #endregion
    }
}