using System;
using System.Net;
using System.Collections;
using System.Collections.Specialized;
using System.Web;
using System.Threading;
using System.Threading.Tasks;

using System.IO;
using System.Linq;
using System.ComponentModel;
using System.Collections.Generic;
using System.Windows.Forms;

using SwissAcademic.Citavi;
using SwissAcademic.Citavi.Metadata;
using SwissAcademic.Citavi.Shell;
using SwissAcademic.Collections;


public static class CitaviMacro
{

	public static void Main()
	{

			int counter = 0;
			int counterTotal = 0;
		
			//if this macro should ALWAYS affect all titles in active project, choose first option
			//if this macro should affect just filtered rows if there is a filter applied and ALL if not, choose second option
			
			//ProjectReferenceCollection references = Program.ActiveProjectShell.Project.References;		
			List<Reference> references = Program.ActiveProjectShell.PrimaryMainForm.GetFilteredReferences();
			
			//if we need a ref to the active project
			SwissAcademic.Citavi.Project activeProject = Program.ActiveProjectShell.Project;

			foreach (Reference reference in references)
			{
				counterTotal += 1;
				
				ReferenceType referenceType = reference.ReferenceType;
				
				if(reference.Locations.Count>1){
					// skipp all where there are already 2 locations (1 online, 1 pdf)
					MessageBox.Show(string.Format("SKIPPING: \n{0}\n{1}\n{2}\n",reference.ToString(),reference.BibTeXKey.ToString(),reference.Locations.Count.ToString()));
					continue;
				}
				
				foreach (Location location in reference.Locations)
				{
					//if(location.LocationType != LocationType.ElectronicAddress){
					//	counterTotal += 1;
					//}
					if (location == null) return;
					if (location.Address == null) continue;
					if (location.Address.UriString == null) continue;
					
					//MessageBox.Show(string.Format("cur: \n{0}\n{1}",reference.ToString(),reference.Locations.Count));
					
					if (location.LocationType == LocationType.ElectronicAddress)
					{
						if(location.Address.ToString().StartsWith("http") || location.Address.ToString().StartsWith("www")){
							// try A
							string pdfTarget = @"C:\Users\xxx\Desktop\aaa\" + location.Address.UriString.Substring(location.Address.UriString.LastIndexOf("/")+1)+".pdf";
							// this would need some conversion?
							//File.Create(p);
							//PdfExportOptions a = new PdfExportOptions();
							MessageBox.Show(string.Format("Will Download for \n{0}\n{1}\n{2}\n{3}",reference.ToString(),location.Address.ToString(),reference.BibTeXKey.ToString(),pdfTarget));
							
							// try B
							System.Threading.CancellationToken ct = new System.Threading.CancellationToken();
							IProgress<System.Threading.Tasks.PercentageAndTextProgressInfo> progress = new Progress<System.Threading.Tasks.PercentageAndTextProgressInfo>();
							System.Threading.Tasks.Task t = location.DownloadFullTextExtractionAsync(progress,ct);
					        //Console.WriteLine("taskA Status: {0}", taskA.Status);
					        try {
								t.RunSynchronously();
								t.Start();
					         	t.Wait();
					       } 
					       catch (AggregateException) {
								MessageBox.Show(string.Format("error \n{0}","unknown"));
					       }   
							
							counter +=1;
							
							MessageBox.Show(string.Format("done for \n{0}\n{1}\n{2}",reference.ToString(),location.Address.ToString(),t.Status.ToString()));
							
							// try C
							//var fbd = new FolderBrowserDialog();
							//DialogResult result = fbd.ShowDialog();
							//p = fbd.SelectedPath;


							// try ???
							//location.ExportPdf(p,a, true);
							//client.OpenRead(location.Address);
							//client.DownloadFile(location.Address, p);
						}
					}
				}
			
			//	MessageBox.Show(string.Format("cur: ",reference.Locations[0].AddressUri);
			
				if (counterTotal>3){
					break;
				}
			}
			MessageBox.Show(string.Format("Macro has finished execution.\r\n{0} changes were made (total {1} touched)", counter.ToString(), counterTotal.ToString()), "Citavi", MessageBoxButtons.OK, MessageBoxIcon.Information);
	}
}