using BeWo.ServiceProxy;
using BeWo.Services;
using BeWo.ViewModel.ListViewModel;
using BS.Shared;
using BS.Shared.DataContracts;
using BS.Shared.DataContracts.Compact;
using BS.Shared.DataContracts.Feature.AI;
using BS.Shared.Extensions.CustomInterfaces;
using DevExpress.Mvvm;
using DevExpress.Xpf.Layout.Core;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Input;

namespace BeWo.ViewModel.View.Administration
{
	public class AiPromptbausteinComplexTreeViewModel : WindowViewModel
	{
		private AiPromptbausteinFolderVM _SelectedFolder;

		private IBeWoWindowService WindowService { get; set; }
		private AiActionType AiActionType { get; set; }

		public AiPromptbausteinFolderListVM Folders { get; set; }
		public AiPromptbausteinPromptVM SelectedPrompt { get; set; }
		public AiPromptbausteinFolderVM CopiedFolder { get; set; }
		public AiPromptbausteinPromptVM CopiedPrompt { get; set; }

		public DelegateCommand OpenAddFolderDialogCommand { get; private set; }
		public DelegateCommand OpenEditFolderDialogCommand { get; private set; }
		public DelegateCommand CopyFolderCommand { get; private set; }
		public DelegateCommand PasteFolderCommand { get; private set; }
		public DelegateCommand DeleteFolderCommand { get; private set; }

		public DelegateCommand OpenAddPromptDialogCommand { get; private set; }
		public DelegateCommand OpenEditPromptDialogCommand { get; private set; }
		public DelegateCommand CopyPromptCommand { get; private set; }
		public DelegateCommand PastePromptCommand { get; private set; }
		public DelegateCommand DeletePromptCommand { get; private set; }

		public bool IsEditingMode { get; set; }

		public AiPromptbausteinFolderVM SelectedFolder
		{
			get => _SelectedFolder;
			set => SetProperty(ref _SelectedFolder, value, nameof(SelectedFolder));
		}


		public AiPromptbausteinComplexTreeViewModel() : this(null, AiActionType.ServiceRecordConversation)
		{
			if (BeWoApp.IsInDesignMode)
			{
				ReloadVMList();
				SelectedFolder = Folders.VMList.FirstOrDefault();
				return;
			}
		}
		public AiPromptbausteinComplexTreeViewModel(IBeWoWindowService windowService, AiActionType aiActionType)
		{
			WindowService = windowService;
			AiActionType = aiActionType;

			OpenAddFolderDialogCommand = new DelegateCommand(OpenAddFolderDialog, canOpenAddFolderDialog, false);
			OpenEditFolderDialogCommand = new DelegateCommand(OpenEditFolderDialog, canOpenEditFolderDialog, false);
			CopyFolderCommand = new DelegateCommand(CopyFolder, canCopyFolder, false);
			PasteFolderCommand = new DelegateCommand(PasteFolder, canPasteFolder, false);
			DeleteFolderCommand = new DelegateCommand(DeleteFolder, canDeleteFolder, false);

			OpenAddPromptDialogCommand = new DelegateCommand(OpenAddPromptDialog, canOpenAddPromptDialog, false);
			OpenEditPromptDialogCommand = new DelegateCommand(OpenEditPromptDialog, canOpenEditPromptDialog, false);
			CopyPromptCommand = new DelegateCommand(CopyPrompt, canCopyPrompt, false);
			PastePromptCommand = new DelegateCommand(PastePrompt, canPastePrompt, false);
			DeletePromptCommand = new DelegateCommand(OpenDeletePromptDialog, canOpenDeletePromptDialog, false);

			IsEditingMode = true;
		}


		public override bool IsDirty
		{
			get
			{
				return false;
			}
		}
		public bool HasCopiedFolder => CopiedFolder is object;
		public bool HasCopiedPrompt => CopiedPrompt  is object;
		public CompactEmployeeDC CurrentEmployee => BeWoApp.CompactLoggedOnEmployee;


		public void UpdateFolderCommands()
		{
			OpenAddFolderDialogCommand.RaiseCanExecuteChanged();
			OpenEditFolderDialogCommand.RaiseCanExecuteChanged();
			CopyFolderCommand.RaiseCanExecuteChanged();
			PasteFolderCommand.RaiseCanExecuteChanged();
			DeleteFolderCommand.RaiseCanExecuteChanged();
		}		
		public void UpdatePromptCommands()
		{
			OpenAddPromptDialogCommand.RaiseCanExecuteChanged();
			OpenEditPromptDialogCommand.RaiseCanExecuteChanged();
			CopyPromptCommand.RaiseCanExecuteChanged();
			PastePromptCommand.RaiseCanExecuteChanged();
			DeletePromptCommand.RaiseCanExecuteChanged();
		}

		public void SaveVMList()
		{

		}
		internal void ReloadVMList()
		{
			var folders_dc = PredefinedAiPromptbausteinFolders.CreateSubTree(AiActionType);

			Folders = new AiPromptbausteinFolderListVM(folders_dc);

			FirePropertyChanged(nameof(Folders));
		}
		public void UpdateVMList(AiPromptbausteinTreeListVM new_list)
		{

		}

		void OpenAddFolderDialog()
		{
			var sel_folder = SelectedFolder;
			var new_vm = sel_folder.SubFolders.CreateNewVM();

			new_vm.Creator = CurrentEmployee;
			new_vm.Parent = sel_folder;
			new_vm.CanAdd = true;
			new_vm.CanEdit = true;

			var vm = new AiPromptbausteinFolderViewModel(new_vm, true);

			vm.Accept_Button_Clicked += (s, e) =>
			{
				sel_folder.SubFolders.VMList.Add(new_vm);
				sel_folder.IsExpanded = true;
			};

			WindowService.Show(vm);
		}
		void OpenEditFolderDialog()
		{
			var sel_folder = SelectedFolder;
			var sel_dc = sel_folder.CommitToDataContract();
			var edit_vm = new AiPromptbausteinFolderVM(sel_dc);

			var vm = new AiPromptbausteinFolderViewModel(edit_vm, false);

			vm.Accept_Button_Clicked += (s, e) =>
			{
				var edit_dc = edit_vm.CommitToDataContract();
				sel_folder.UpdateByDataContract(edit_dc);
			};

			WindowService.Show(vm);
		}
		void CopyFolder()
		{

		}
		void PasteFolder()
		{

		}
		void DeleteFolder()
		{
			var sel_folder = SelectedFolder;
			var parent = sel_folder.Parent;

			var txt = "Möchten Sie den ausgewählten Ordner wirklich löschen?";
			var result = MessageBox.Show(txt, "Hinweis", MessageBoxButton.OKCancel);

			if (result != MessageBoxResult.OK)
				return;

			parent.SubFolders.VMList.Remove(sel_folder);
		}

		bool canOpenAddFolderDialog()
		{
			return SelectedFolder?.CanAdd ?? true;
		}
		bool canOpenEditFolderDialog()
		{
			return SelectedFolder?.CanEdit ?? false;
		}
		bool canCopyFolder()
		{
			return false;
			//return SelectedFolder.CanEdit;
		}
		bool canPasteFolder()
		{
			return false;
			//return HasCopiedFolder && SelectedFolder.CanAdd;
		}
		bool canDeleteFolder()
		{
			return SelectedFolder?.CanEdit ?? false;
		}

		void OpenAddPromptDialog()
		{
			var sel_folder = SelectedFolder;
			var new_vm = sel_folder.SubPrompts.CreateNewVM();

			new_vm.Creator = CurrentEmployee;
			new_vm.ParentFolderOid = sel_folder.DataContract.Oid;
			new_vm.ShowPrompt = true;
			new_vm.ShowPromptByTenant = true;
			new_vm.CanEdit = true;

			var vm = new AiPromptbausteinPromptViewModel(new_vm, true);

			vm.Accept_Button_Clicked += (s, e) =>
			{
				sel_folder.SubPrompts.VMList.Add(new_vm);
				SelectedPrompt = new_vm;
			};

			WindowService.Show(vm);
		}
		void OpenEditPromptDialog()
		{
			var sel_prompt = SelectedPrompt;
			var sel_dc = sel_prompt.CommitToDataContract();
			var edit_vm = new AiPromptbausteinPromptVM(sel_dc);

			var vm = new AiPromptbausteinPromptViewModel(edit_vm, false);

			vm.Accept_Button_Clicked += (s, e) =>
			{
				var edit_dc = edit_vm.CommitToDataContract();
				sel_prompt.UpdateByDataContract(edit_dc);
			};

			WindowService.Show(vm);
		}
		void CopyPrompt()
		{
			CopiedPrompt = SelectedPrompt;
		}
		void PastePrompt()
		{
			var copied_dc = CopiedPrompt.CommitToDataContract();
			copied_dc.Creator = CurrentEmployee;
			copied_dc.CanEdit = true;
			copied_dc.IsPublic = false;
			copied_dc.Oid = null;
			copied_dc.Version = 0;
			var copied_vm = new AiPromptbausteinPromptVM(copied_dc);

			SelectedFolder.SubPrompts.VMList.Add(copied_vm);
		}
		void OpenDeletePromptDialog()
		{
			var sel_prompt = SelectedPrompt;
			var folder = SelectedFolder;

			var txt = "Möchten Sie den ausgewählten Prompt wirklich löschen?";
			var result = MessageBox.Show(txt, "Hinweis", MessageBoxButton.OKCancel);

			if (result != MessageBoxResult.OK)
				return;

			folder.SubPrompts.VMList.Remove(SelectedPrompt);
		}
		bool canOpenAddPromptDialog()
		{
			return SelectedFolder?.CanAdd ?? false;
		}
		bool canOpenEditPromptDialog()
		{
			return SelectedPrompt?.CanEdit ?? false;
		}
		bool canCopyPrompt()
		{
			return SelectedPrompt is object;
		}
		bool canPastePrompt()
		{
			return canOpenAddPromptDialog() && HasCopiedPrompt;
		}
		bool canOpenDeletePromptDialog()
		{
			return SelectedPrompt?.CanEdit ?? false;
		}
	}
}