using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Media.Imaging;
using Tango.Core.Commands;
using Tango.Scripting.IDE.Controls;
using Tango.Scripting.IDE.Projects;
using Tango.Scripting.IDE.ProjectTypes;
using Tango.SharedUI;

namespace Tango.Scripting.IDE
{
    public class ScriptIDEViewVM : ViewModel
    {
        private List<IProjectType> _projectTypes;
        public ObservableCollection<ErrorData> ErrorList { get; set; }

        #region Properties

        private Solution _solution;
        public Solution Solution
        {
            get { return _solution; }
            set { _solution = value; RaisePropertyChangedAuto(); }
        }

        private IProject _selectedProject;
        public IProject SelectedProject
        {
            get { return _selectedProject; }
            set { _selectedProject = value; RaisePropertyChangedAuto(); }
        }

        private IProjectItem _selectedProjectItem;
        public IProjectItem SelectedProjectItem
        {
            get { return _selectedProjectItem; }
            set { _selectedProjectItem = value; RaisePropertyChangedAuto(); }
        }

        private ObservableCollection<IProjectItem> _openProjectItems;
        public ObservableCollection<IProjectItem> OpenProjectItems
        {
            get { return _openProjectItems; }
            set { _openProjectItems = value; RaisePropertyChangedAuto(); }
        }
        
        #endregion

        #region Commands
        public RelayCommand NewProjectCommand { get; set; }
        public RelayCommand<IProjectItem> OpenProjectItemCommand { get; set; }

        public RelayCommand<IProjectItem> CloseProjectItemCommand { get; set; }

        #endregion

        #region Constructors

        public ScriptIDEViewVM()
        {
            _projectTypes = new List<IProjectType>();
            OpenProjectItems = new ObservableCollection<IProjectItem>();
            ErrorList = new ObservableCollection<ErrorData>();

            RegisterProjectType(new StubProjectType());
            RegisterProjectType(new UnitTestProjectType());

            Solution = new Solution();
            Solution.Projects.Add(_projectTypes.First().NewProject("Test Project.stub"));

            //Init Commands
            NewProjectCommand = new RelayCommand(AddNewProject);
            OpenProjectItemCommand = new RelayCommand<IProjectItem>(OpenProjectItem);
            CloseProjectItemCommand = new RelayCommand<IProjectItem>(CloseProjectItem);
        }

        #endregion

        #region Public Methods

        private void OpenProjectItem(IProjectItem projectItem)
        {
            if (!OpenProjectItems.Contains(projectItem))
            {
                OpenProjectItems.Add(projectItem);
            }

            SelectedProjectItem = projectItem;
        }

        private void CloseProjectItem(IProjectItem projectItem)
        {
            OpenProjectItems.Remove(projectItem);

            SelectedProjectItem = OpenProjectItems.FirstOrDefault();
        }

        public void RegisterProjectType(IProjectType projectType)
        {
            _projectTypes.Add(projectType);
        }

        public void UnRegisterProjectItemHandler(IProjectType projectType)
        {
            _projectTypes.Remove(projectType);
        }
        /// <summary>
        /// Open a dialog to create a new project 
        /// </summary>
        private void AddNewProject()
        {
            Dialogs.NewProjectDialog dialog = new Dialogs.NewProjectDialog(true);
            if(dialog.ShowDialog() == true)
            {
                MessageBox.Show("You said: OK");
            }
        }
        #endregion
    }
}