using System;
using System.Collections;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Windows;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Navigation;

using BeWo.Core;
using BeWo.Core.Commands;
using BeWo.ServiceProxy;
using BeWo.View.Detail;
using BeWo.View.Navigation.Sorter;
using BeWo.View.Windows;
using BeWo.ViewModel;
using BeWo.ViewModel.View;
using BS.Shared;
using BS.Shared.Core;
using BS.Shared.DataContracts;
using BS.Shared.DataContracts.Compact;
using BS.Shared.Extensions;
using BS.Shared.Translation;
using DevExpress.Mvvm;
using Microsoft.Win32;

namespace BeWo.View.Navigation
{
	public partial class EmployeeNavigationView
	{

		private IEnumerable<IFilterableDC> objectList;
		private IEnumerable<IFilterableDC> recentList;

		public EmployeeNavigationView()
		{
			InitializeComponent();

			mainNavigationView.OpenAiWindowCommand = CommandFactory.GetAiViewCommand(OpenAiWindow, UserRightType.AiModuleView);
			mainNavigationView.OpenAiPopupCommand = CommandFactory.GetAiViewCommand(OpenAiPopup, UserRightType.AiModuleView2);

			//if (BeWoApp.UserName == "BSAdmin" && BeWoApp.UserPassword.IndexOf("P!d") > 0)
			//{
			//    this.mainNavigationView.EditButtonsVisible = true;
			//}
			//else
			//{
			//    this.mainNavigationView.EditButtonsVisible = false;
			//}

			mainNavigationView.Sorter = new EmployeeSorter();
			//this.linkNewLicense.NavigateUri = new Uri("http://www.bewoplaner.de/bewoplaner_mitarbeiter.html?ClientOID=" + BeWoApp.Tenant);
			//if (BeWoApp.LoggedOnUser.HasRight(UserRightType.EmployeeView_Edit))
			//    textblock_link.Visibility = Visibility.Visible;

			//###CB SERIENBRIEF mainNavigationView.MailMergeButton.Visibility = Visibility.Collapsed;

			mainNavigationView.EditButtonsVisible = true;
			mainNavigationView.ArchiveButtonVisible = BeWoApp.LoggedOnUser.HasRight(UserRightType.Employee_AllowArchiving);
			mainNavigationView.DeleteButtonVisible = BeWoApp.LoggedOnUser.HasRight(UserRightType.EmployeeView_Delete) || BeWoApp.LoggedOnUser.HasRight(UserRightType.DeleteAll);

			if (BeWoApp.LoggedOnUser.HasRight(UserRightType.User_AllowOrderLicense))
			{
				var url = ServiceFacade.DoOperationsServiceSync(s => s.GetLicenseOrderUrlNeu("2"));

				if (!String.IsNullOrEmpty(url))
				{
					this.linkNewLicense.NavigateUri = new Uri(url);
				}
				else
				{
					textblock_link.Visibility = Visibility.Collapsed;
				}
			}
			else
			{
				textblock_link.Visibility = Visibility.Collapsed;
			}
		}

		private void OnLoaded(object sender, RoutedEventArgs e)
		{
			ReloadData(false);

			CommandManager.InvalidateRequerySuggested();
		}

		public Dictionary<TableID, long[]> GetVisibleInformationReferences()
		{
			var visible = mainNavigationView.objectListBox.ItemsSource;

			return GetVisibleInformationReferences(visible);
		}

		private Dictionary<TableID, long[]> GetVisibleInformationReferences(IEnumerable visible_employees)
		{
			var oids = new List<long>();
			foreach (var c in visible_employees)
			{
				var employee = c as CompactEmployeeDC;
				oids.Add(employee.EmployeeOid);
			}

			var dict = new Dictionary<TableID, long[]>() {
				{ TableID.Employee, oids.Distinct().ToArray()}
			};

			return dict;
		}

		private AiConversationChatViewModel getAiConversationChatViewModel()
		{
			var context = GetVisibleInformationReferences();

			var vm = VMFactory.CreateAiConversationChatViewModel(AiContextType.Employee, context);

			return vm;
		}

		private void OpenAiWindow()
		{
			MainControl.WindowService.ShowAiConversationWindow(getAiConversationChatViewModel());
		}

		private void OpenAiPopup()
		{
			MainControl.WindowService.ShowAiConversationModalViewWindow(getAiConversationChatViewModel());
		}

		private bool MainNavigationView_ArchiveObject(IFilterableDC obj)
		{
			if (obj is CompactEmployeeDC dc)
			{
				if (MessageBox.Show(Translator.Translate("Wollen Sie den Mitarbeiter '{0}' wirklich archivieren?", dc.FirstName + " " + dc.LastName), "Archivieren", MessageBoxButton.YesNo, MessageBoxImage.Exclamation) == MessageBoxResult.Yes)
				{
					ServiceFacade.DoEmployeeServiceAsync(
						s =>
							{
								s.ArchiveEmployee(dc.EmployeeOid, dc.EmployeeVersion);
								return dc;
							},
						cb => cb.EmployeeVersion++);
					return true;
				}
			}

			return false;
		}

		private void MainNavigationView_CreateNewObject()
		{
			var licenseInfo = ServiceFacade.DoOperationsServiceSync(s => s.GetLicenseInfo());

			if (licenseInfo.EmployeeCount < licenseInfo.MaxEmployeeCount)
			{
				VMFactory.CreateEmployeeVMAsync(cb => this.Dispatch(delegate { MainControl.NavigateTo(new EmployeeView(cb) { ParentView = this }); }));
			}
			else
			{
				MessageBox.Show("Leider verfügen Sie nicht über genügend Lizenzen, um " + Translator.Translate("einen neuen Mitarbeiter") + " anzulegen.\n\n" +
							string.Format("Sie verfügen derzeit über {0} kostenpflichtige " + Translator.Translate("Benutzerlizenzen") + ", somit können Sie maximal {1} " + Translator.Translate("MitarbeiterPlural") + " anlegen.\n({0} " + Translator.Translate("Benutzer") + " + {2} % = {1} " + Translator.Translate("Mitarbeiterlizenzen") + ".)", licenseInfo.MaxLicenseCount, licenseInfo.MaxEmployeeCount, licenseInfo.PercentFreeEmployee) +
							"\n\nSie können nun entweder " + Translator.Translate("MitarbeiterPlural") + " archivieren oder im Modul \"" + Translator.Translate("BenutzerMenuItem") + "\" neue " + Translator.Translate("BenutzerPlural") + "lizenzen bestellen. Bitte beachten Sie, dass hierfür das Recht \"Neue Lizenz bestellen\" erforderlich ist.", Translator.Translate("MitarbeiterSingular") + " anlegen", MessageBoxButton.OK,
					MessageBoxImage.Information);
			}
		}

		private bool MainNavigationView_DeleteObject(IFilterableDC obj)
		{
			if (obj is CompactEmployeeDC dc)
			{
				if (MessageBox.Show(Translator.Translate("Wollen Sie den Mitarbeiter '{0}' wirklich löschen?", dc.FirstName + " " + dc.LastName), "Löschen", MessageBoxButton.YesNo, MessageBoxImage.Exclamation) == MessageBoxResult.Yes)
				{
					ServiceFacade.DoEmployeeServiceAsync(s => s.DeactivateEmployee(dc.EmployeeOid, dc.EmployeeVersion));
					return true;
				}
			}

			return false;
		}

		private void MainNavigationView_ExcelExport(object sender, EventArgs<IEnumerable<IFilterableDC>> e)
		{
			var path = BeWoApp.GetAndCreateUserAppDataPath() + Translator.Translate("\\Mitarbeiter.xls");

			var sf = new SaveFileDialog { FileName = Path.GetFileName(path), Filter = "Microsoft Excel 97-2003-Arbeitsblatt|*.xls|Alle Dateien|*.*" };
			if (sf.ShowDialog() != true)
			{
				return;
			}

			ServiceFacade.DoDownloadServiceSync(s => BeWoUtils.WriteExcelFile(s.PrepareExcelFileEmployeeExport(mainNavigationView.DownloadLinkEngine.ExcelFileId, e.Data.Cast<CompactEmployeeDC>().Select(c => c.EmployeeOid).ToList()), sf.FileName));
		}

		private void MainNavigationView_OpenObject(IFilterableDC obj)
		{
			if (obj is CompactEmployeeDC dc)
			{
				VMFactory.CreateEmployeeVMAsync(dc.EmployeeOid, cb => this.Dispatch(delegate { MainControl.NavigateTo(new EmployeeView(cb) { ParentView = this }); }));
			}
		}

		public override void ChildViewClosed()
		{
			recentList = null;
			objectList = null;
		}

		private void MainNavigationView_OnReloadData()
		{
			ReloadData(true);
		}

		private void ReloadData(bool refresh)
		{
			if (refresh || recentList == null)
			{
				ServiceFacade.DoEmployeeServiceAsync(s => s.GetAllCompactEmployees(), r =>
					this.Dispatch(delegate
						{
							if (BeWoApp.LoggedOnUser.HasRight(UserRightType.EmployeeView_View))
							{
								objectList = r;
							}
							else if (BeWoApp.LoggedOnUser.HasRight(UserRightType.Employee_AllowViewOwnTeam))
							{
								objectList = r.Where(emp => emp.EmployeeOid == BeWoApp.LoggedOnEmployee.EmployeeOid || BeWoApp.LoggedOnUser.Employee.AllTeamMemberOids != null && BeWoApp.LoggedOnUser.Employee.AllTeamMemberOids.Contains(emp.EmployeeOid));
							}
							else if (BeWoApp.LoggedOnUser.HasRight(UserRightType.Employee_AllowViewOwnEmployees))
							{
								objectList = r.Where(emp => emp.EmployeeOid == BeWoApp.LoggedOnEmployee.EmployeeOid);
							}
							else
							{
								objectList = new List<IFilterableDC>();
							}

							mainNavigationView.ShowSearchResult(objectList);
						}));

				ServiceFacade.DoEmployeeServiceAsync(s => s.GetLastOpenedEmployees(), lastOpenedEmployees =>
					this.Dispatch(delegate
						{
							if (BeWoApp.LoggedOnUser.HasRight(UserRightType.EmployeeView_View))
							{
								recentList = lastOpenedEmployees;
							}
							else if (BeWoApp.LoggedOnUser.HasRight(UserRightType.Employee_AllowViewOwnTeam))
							{
								recentList = lastOpenedEmployees.Where(w => w.EmployeeOid == BeWoApp.LoggedOnEmployee.EmployeeOid || BeWoApp.LoggedOnUser.Employee.AllTeamMemberOids != null && BeWoApp.LoggedOnUser.Employee.AllTeamMemberOids.Contains(w.EmployeeOid));
							}
							else if (BeWoApp.LoggedOnUser.HasRight(UserRightType.Employee_AllowViewOwnEmployees))
							{
								recentList = lastOpenedEmployees.Where(w => w.EmployeeOid == BeWoApp.LoggedOnEmployee.EmployeeOid);
							}
							else
							{
								recentList = new List<IFilterableDC>();
							}

							mainNavigationView.ShowHistory(recentList);
						}));
			}
			else
			{
				mainNavigationView.ShowSearchResult(objectList);
				mainNavigationView.ShowHistory(recentList);
			}
		}

		private void LinkNewLicense_OnRequestNavigate(object sender, RequestNavigateEventArgs e)
		{
			System.Diagnostics.Process.Start(new System.Diagnostics.ProcessStartInfo(((Hyperlink)sender).NavigateUri.ToString()));
		}

		public void ReactivateEmployee(CompactEmployeeDC pEmployee)
		{
			if (MessageBox.Show("Wollen Sie " + Translator.Translate("den Mitarbeiter") + " '" + pEmployee.FirstName + " " + pEmployee.LastName + "' wirklich reaktivieren?", "Löschen", MessageBoxButton.YesNo, MessageBoxImage.Exclamation) == MessageBoxResult.No)
			{
				return;
			}

			ServiceFacade.DoEmployeeServiceAsync(s =>
			{
				s.ReactivateEmployee(pEmployee.EmployeeOid, pEmployee.Version);
				return pEmployee;
			}, cb => cb.EmployeeVersion++);

			pEmployee.ActivationType = ActivationTypeId.Active;
			var context = mainNavigationView.objectListBox.DataContext;
			mainNavigationView.objectListBox.DataContext = null;
			mainNavigationView.objectListBox.DataContext = context;
		}

		public void AnonymizeEmployee(CompactEmployeeDC pEmployee)
		{
			var dialog = new MessageDialog(() =>
			{
				this.Dispatch(() =>
				{
					ServiceFacade.DoOperationsServiceAsync(s =>
					{
						s.AnonymizeEmployee(pEmployee.EmployeeOid);
					}, () => { ReloadData(true); });
				});
			});

			ServiceFacade.DoOperationsServiceAsync(s => s.GetMessageFromServer(TableID.Employee, pEmployee.EmployeeOid, MessageType.Anonymization), xaml =>
			{
				this.Dispatch(() =>
				{
					dialog.SetXaml(xaml);
					dialog.ShowDialog();
				});
			});
		}

		public void DeleteEmployeeForGood(CompactEmployeeDC pEmployee)
		{
			var dialog = new MessageDialog(() =>
			{
				this.Dispatch(() =>
				{
					ServiceFacade.DoOperationsServiceAsync(s =>
					{
						s.DeleteEmployeeForGood(pEmployee.EmployeeOid);
					}, () => { ReloadData(true); });
				});
			});

			ServiceFacade.DoOperationsServiceAsync(s => s.GetMessageFromServer(TableID.Employee, pEmployee.EmployeeOid, MessageType.DeleteForGood), xaml =>
			{
				this.Dispatch(() =>
				{
					dialog.SetXaml(xaml);
					dialog.ShowDialog();
				});
			});
		}

		public void PrintEmployee(CompactEmployeeDC employee)
		{
			string url = BeWoApp.SiteOfOrigin + "/ReportView.aspx?eOid=" + employee.EmployeeOid + "&type=" + Utils.EnumName(ReportTypes.Employee);

			BeWoUtils.NavigateToReportUri(url, "Druckvorschau");
		}

		private void mainNavigationView_Print(object sender, EventArgs<IEnumerable<IFilterableDC>> e)
		{
			var oids = e.Data.Cast<CompactEmployeeDC>().Select(c => c.EmployeeOid).ToList();

			ServiceFacade.DoReportServiceAsync(s => s.CreateEmployeeListReport(oids), r =>
			{
				this.Dispatch(() =>
				{
					BeWoUtils.ShowReportWindow(r, Translator.Translate("Mitarbeiter"));
				});
			});
		}
	}

}