using System;
using System.Linq;
using System.Threading.Tasks;
using InABox.Clients;
using InABox.Core;
using InABox.Mobile;
using Xamarin.Forms.Xaml;
using XF.Material.Forms.UI.Dialogs;

namespace PRS.Mobile
{

    public enum EmployeeQualificationImageType
    {
        Front,
        Back,
        Other
    }
    
    [XamlCompilation(XamlCompilationOptions.Compile)]
    public partial class EmployeeQualificationEditImagesView
    {
        public EmployeeQualificationEditImagesView()
        {
            InitializeComponent();
        }

        public override void Refresh()
        {
            if (ViewModel == null)
                return;
            
            _otherImages.ParentID = ViewModel.Item.ID;
            _otherImages.ItemsSource = ViewModel.Documents;
            var front = ViewModel.Photos.FirstOrDefault(x => x.ID == ViewModel.Item.FrontPhotoID);
            var back = ViewModel.Photos.FirstOrDefault(x => x.ID == ViewModel.Item.BackPhotoID); 
            _frontImage.Load(front?.FileName, front?.Data);
            _backImage.Load(back?.FileName, back?.Data);
        }

        public EmployeeQualificationImageType ImageType => 
            _accordion.SelectedItem == _frontitem
                ? EmployeeQualificationImageType.Front
                : _accordion.SelectedItem == _backitem
                    ? EmployeeQualificationImageType.Back
                    : EmployeeQualificationImageType.Other;
        
        public async Task AddImage<T, TOptions>(TOptions options) 
            where T : MobileImageSource<T,TOptions>
            where TOptions : MobileImageOptions<T>, new()
        {

            if (_accordion.SelectedItem == _otheritem)
            {
                await _otherImages.AddImage<T, TOptions, EmployeeQualificationDocumentShell>(options);
                return;
            }
            
            MobileDocument file = null;
            try
            {
                file = await MobileDocument.From(options);
            }
            catch (Exception e)
            {
                await MaterialDialog.Instance.AlertAsync(e.Message, "ERROR");
            }
            
            if (file != null)
            {
                using (await MaterialDialog.Instance.LoadingDialogAsync("Saving Image"))
                {

                    Document doc = new Document()
                    {
                        FileName = file.FileName,
                        Data = file.Data,
                        CRC = CoreUtils.CalculateCRC(file.Data),
                        TimeStamp = DateTime.Now
                    };
                    new Client<Document>().Save(doc, "Created on Mobile Device");
                    
                    if (_accordion.SelectedItem == _frontitem)
                    {
                        ViewModel.Item.FrontPhotoID = doc.ID;
                        ViewModel.Item.Save("Front Image Loaded from Mobile Device");
                        _frontImage.Load(file.FileName,file.Data);
                    }
                    
                    else if (_accordion.SelectedItem == _backitem)
                    {
                        ViewModel.Item.BackPhotoID = doc.ID;
                        ViewModel.Item.Save("Back Image Loaded from Mobile Device");
                        _backImage.Load(file.FileName,file.Data);
                    }

                }
            }
        }
    }
}