using Microsoft.Win32;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Tango.Core.Commands;
using Tango.MachineStudio.Common;
using Tango.MachineStudio.Common.Notifications;
using Tango.MachineStudio.UI.TFS;
using Tango.Settings;
using Tango.SharedUI;
using Tango.SharedUI.Components;
using Tango.TFS;

namespace Tango.MachineStudio.UI.ViewModels
{
    public class ReportIssueViewVM : DialogViewVM
    {
        private MachineStudioSettings _settings;

        public SelectedObjectCollection<Tag> SelectedTags { get; set; }

        public Project Project { get; set; }

        [WorkItemValidation]
        public WorkItem WorkItem { get; set; }

        private String _imageFile;
        public String ImageFile
        {
            get { return _imageFile; }
            set { _imageFile = value; RaisePropertyChangedAuto(); }
        }

        public RelayCommand BrowseImageCommand { get; set; }

        public ReportIssueViewVM() : base()
        {
            _settings = SettingsManager.Default.GetOrCreate<MachineStudioSettings>();
            BrowseImageCommand = new RelayCommand(BrowseImage);
        }

        public ReportIssueViewVM(Project project, WorkItem workItem) : this()
        {
            Project = project;
            WorkItem = workItem;

            var area = project.GetAreaByName(_settings.DefaultIssueReportArea);
            if (area != null)
            {
                workItem.Area = area;
            }

            var assignedTo = project.Members.FirstOrDefault(x => x.Email == _settings.DefaultIssueReportAssignTo);
            if (assignedTo != null)
            {
                workItem.AssignedTo = assignedTo;
            }

            var tags = project.Tags.Where(x => _settings.DefaultIssueReportTags.Contains(x.Name)).ToList();
            if (tags != null)
            {
                workItem.Tags = tags;
            }

            SelectedTags = new SelectedObjectCollection<Tag>(Project.Tags.ToObservableCollection(), workItem.Tags.ToObservableCollection());
        }

        private void BrowseImage()
        {
            OpenFileDialog dlg = new OpenFileDialog();
            dlg.Title = "Select image file";
            dlg.Filter = "Image Files|*.jpg;*.bmp;*.png";
            if (dlg.ShowDialog().Value)
            {
                ImageFile = dlg.FileName;
            }
        }

        protected override void Accept()
        {
            if (Validate())
            {
                WorkItem.Tags = SelectedTags.SynchedSource.ToList();

                if (ImageFile != null && File.Exists(ImageFile))
                {
                    WorkItem.Attachments.Add(new Attachment()
                    {
                        Description = "User Image",
                        FilePath = ImageFile,
                        Name = Path.GetFileName(ImageFile),
                    });
                }

                try
                {
                    _settings.DefaultIssueReportArea = WorkItem.Area.Name;
                    _settings.DefaultIssueReportAssignTo = WorkItem.AssignedTo.Email;
                    _settings.DefaultIssueReportTags = WorkItem.Tags.Select(x => x.Name).ToList();
                    _settings.Save();
                }
                catch { }

                base.Accept();
            }
        }
    }
}