using InABox.Core;
using Plugin.Media;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Comal.Classes;
using Xamarin.Forms;
using Xamarin.Forms.Xaml;
using XF.Material.Forms.UI.Dialogs;
using comal.timesheets.CustomControls;
using InABox.Clients;

namespace comal.timesheets
{
    [XamlCompilation(XamlCompilationOptions.Compile)]
    public partial class NewReplyNotification : ContentPage
    {
        Guid notificationID = new Guid();
        List<Document> newDocuments = new List<Document>();
        Notification notification = new Notification();
        public NewReplyNotification(Guid id = new Guid())
        {
            InitializeComponent();
            NavigationPage.SetHasBackButton(this, false);
            notificationID = id;
            notification.Sender.ID = App.Data.Me.ID;
            if (App.DeviceString == "i")
            {
                photosFrame.Margin = new Thickness(5, 5, 5, 15);
            }
            if (notificationID != Guid.Empty)
            {              
                LoadExistingNotification();
            }           
        }

        private void ExitBtn_Clicked(object sender, EventArgs e)
        {
            Navigation.PopAsync();
        }

        void LoadExistingNotification()
        {
            Task.Run(() =>             
            {
                CoreTable table = new Client<Notification>().Query(
                    new Filter<Notification>(x => x.ID).IsEqualTo(notificationID),
                    new Columns<Notification>(
                        x => x.ID,
                        x => x.Title,
                        x => x.Description,
                        x => x.EntityID,
                        x => x.EntityType,
                        x => x.Sender.ID,
                        x => x.Sender.Name)
                    );
                if (table.Rows.Any())
                {
                    notification = table.Rows.FirstOrDefault().ToObject<Notification>();
                    Device.BeginInvokeOnMainThread(() => 
                    {
                        try
                        {
                            titleEdt.Text = notification.Title;
                            StringBuilder sb = new StringBuilder();
                            if (!string.IsNullOrWhiteSpace(notification.Sender.Name))
                            {
                                titleLbl.Text = "Replying " + notification.Sender.Name;

                                sb.AppendFormat("Hi {0},\n\n\nAt {1:HH:mmtt} on {1:dd MMM yy}, {2} wrote:\n", notification.Sender.Name.Split(" ").FirstOrDefault(), notification.Created, notification.Sender.Name);
                                notification.Employee.ID = notification.Sender.ID;
                                notification.Employee.Name = notification.Sender.Name;
                                recipientNameLbl.Text = notification.Employee.Name;
                            }
                            var origtext = CoreUtils.StripHTML(notification.Description);
                            foreach (var line in origtext.Split(new char[] { '\n' }, StringSplitOptions.RemoveEmptyEntries).Where(x => !String.IsNullOrWhiteSpace(x)))
                            {
                                sb.AppendFormat(">> {0}\n", line.Trim());
                            }
                            descriptionEdt.Text = sb.ToString();

                            LoadPhotos();
                            ForceLayout();
                        }
                        catch { }
                    });
                }
            });
        }

        void LoadPhotos()
        {
            Task.Run(() =>
            {
                CoreTable table = new Client<NotificationDocument>().Query(
                    new Filter<NotificationDocument>(x => x.EntityLink.ID).IsEqualTo(notificationID),
                    new Columns<NotificationDocument>(x => x.ID, x => x.DocumentLink.ID)
                    );
                if (table.Rows.Any())
                {
                    Device.BeginInvokeOnMainThread(() => 
                    {
                        photosLbl.Text = "Loading " + table.Rows.Count + " Photos";
                        photosLbl.TextColor = Color.Orange;
                    });
                    foreach (CoreRow row in table.Rows)
                    {                        
                        CoreTable table2 = new Client<Document>().Query(new Filter<Document>(x => x.ID).IsEqualTo(Guid.Parse(row.Values[1].ToString())), new Columns<Document>(x => x.Data));
                        DataToImage(table2.Rows.FirstOrDefault().ToObject<Document>().Data);                        
                    }
                    Device.BeginInvokeOnMainThread(() =>
                    {
                        photosLbl.Text = "Photos";
                        photosLbl.TextColor = Color.Default;
                    });
                }
            });
        }

        void SelectRecipientBtn_Clicked(object sender, EventArgs e)
        {
            Navigation.PushAsync(new EmployeeSelectionPage(employee =>
            {
                recipientNameLbl.Text = employee.Name;
                notification.Employee.ID = employee.ID;
                notification.Employee.Name = employee.Name;
            }));
        }

        async void SendBtn_Clicked(object sender, EventArgs e)
        {
            if (notification.Employee.ID == Guid.Empty)
            {
                DisplayAlert("Unable to send", "Notification requires a recipient", "OK");
                return;
            }
            if (string.IsNullOrWhiteSpace(notification.Title))
            {
                DisplayAlert("Unable to send", "Notification requires a title", "OK");
                return;
            }

            using (await MaterialDialog.Instance.LoadingDialogAsync(message: "Sending"))
            {
                new Client<Notification>().Save(notification, "Notification sent on mobile device");
                if (newDocuments.Count > 0)
                {
                    SavePhotos();
                }
                DisplayAlert("Success", "Notification sent to " + notification.Employee.Name, "OK");
                Navigation.PopAsync();
            }
        }

        void SavePhotos()
        {
            List<NotificationDocument> nDocsToSave = new List<NotificationDocument>();
            new Client<Document>().Save(newDocuments, "Saved from Notifications on Mobile");
            foreach (Document doc in newDocuments)
            {
                NotificationDocument notificationDocument = new NotificationDocument();
                notificationDocument.EntityLink.ID = notification.ID;
                notificationDocument.DocumentLink.ID = doc.ID;
                nDocsToSave.Add(notificationDocument);
            }
            Task.Run(() => { new Client<NotificationDocument>().Save(nDocsToSave, "Saved from Notifications on Mobile"); }); 
        }

        void TitleEdt_Changed(object sender, EventArgs e)
        {
            notification.Title = titleEdt.Text;
        }
        void DescriptionEdt_Changed(object sender, EventArgs e)
        {
            notification.Description = descriptionEdt.Text;
        }

        #region Photos
        void TakePhoto_Clicked(object sender, EventArgs e)
        {
            TakeAPhoto();
        }

        void ChooseImage_Clicked(object sender, EventArgs e)
        {
            ChooseAPhoto();
        }
        private async void TakeAPhoto()
        {
            await CrossMedia.Current.Initialize();

            if (!CrossMedia.Current.IsCameraAvailable || !CrossMedia.Current.IsTakePhotoSupported)
            {
                await DisplayAlert("No Camera", ":( No camera available.", "OK");
                return;
            }

            String filename = String.Format("{0:yyyy-MM-dd HH:mm:ss.fff}.png", DateTime.Now);

            var file = await CrossMedia.Current.TakePhotoAsync(new Plugin.Media.Abstractions.StoreCameraMediaOptions
            {
                Name = filename,
                CompressionQuality = 10,
                PhotoSize = Plugin.Media.Abstractions.PhotoSize.Full
            });

            if (file == null)
                return;

            using (await MaterialDialog.Instance.LoadingDialogAsync(message: "Adding Photo"))
            {
                Image img = null;
                var memoryStream = new MemoryStream();
                file.GetStream().CopyTo(memoryStream);
                var data = memoryStream.ToArray();

                Document doc = new Document()
                {
                    FileName = filename,
                    Data = data,
                    CRC = CoreUtils.CalculateCRC(data),
                    TimeStamp = DateTime.Now
                };

                ImageSource src = ImageSource.FromStream(() => new MemoryStream(data));
                img = new Image();
                img.HeightRequest = 150;
                img.WidthRequest = 150;
                img.Aspect = Aspect.AspectFit;
                img.Source = src;
                img.GestureRecognizers.Add(new TapGestureRecognizer
                {
                    Command = new Command(OnTap),
                    CommandParameter = src,
                    NumberOfTapsRequired = 1
                });

                newDocuments.Add(doc);

                file.Dispose();
                if (img != null)
                {
                    Device.BeginInvokeOnMainThread(() =>
                    {
                        ImageScroller.IsVisible = true;
                        images.Children.Add(img);
                    });
                }
            }
        }
        private async void ChooseAPhoto()
        {
            await CrossMedia.Current.Initialize();

            if (!CrossMedia.Current.IsPickPhotoSupported)
            {
                await DisplayAlert("No Library", ":( No Photo Library available.", "OK");
                return;
            }

            var file = await CrossMedia.Current.PickPhotoAsync(new Plugin.Media.Abstractions.PickMediaOptions()
            {
                CompressionQuality = 10,
                PhotoSize = Plugin.Media.Abstractions.PhotoSize.Full
            });

            if (file == null)
                return;

            using (await MaterialDialog.Instance.LoadingDialogAsync(message: "Adding Photo"))
            {
                Image img = null;
                var memoryStream = new MemoryStream();
                file.GetStream().CopyTo(memoryStream);
                var data = memoryStream.ToArray();

                Document doc = new Document()
                {
                    FileName = Path.GetFileName(file.Path),
                    Data = data,
                    CRC = CoreUtils.CalculateCRC(data),
                    TimeStamp = DateTime.Now
                };

                ImageSource src = ImageSource.FromStream(() => new MemoryStream(data));
                img = new Image();
                img.HeightRequest = 150;
                img.WidthRequest = 150;
                img.Aspect = Aspect.AspectFit;
                img.Source = src;
                img.GestureRecognizers.Add(new TapGestureRecognizer
                {
                    Command = new Command(OnTap),
                    CommandParameter = src,
                    NumberOfTapsRequired = 1
                });

                newDocuments.Add(doc);

                file.Dispose();
                if (img != null)
                {
                    Device.BeginInvokeOnMainThread(() =>
                    {
                        ImageScroller.IsVisible = true;
                        images.Children.Add(img);
                    });
                }
            }
        }
        private void OnTap(object obj)
        {
            ImageViewerEditor viewer = new ImageViewerEditor(obj as ImageSource, false);
            Navigation.PushAsync(viewer);
            viewer.OnSaveSelected += ImageViewEditor_OnSaveSelected;
        }
        private void ImageViewEditor_OnSaveSelected(byte[] array)
        {
            String filename = String.Format("{0:yyyy-MM-dd HH:mm:ss.fff}.png", DateTime.Now);
            DataToImage(array, filename);
        }

        public void DataToImage(byte[] data, string filename = "")
        {
            try
            {
                ImageSource src = ImageSource.FromStream(() => new MemoryStream(data));

                Image image = new Image();
                image.HeightRequest = 200;
                image.WidthRequest = 200;
                image.Aspect = Aspect.AspectFit;
                image.VerticalOptions = LayoutOptions.FillAndExpand;
                image.HorizontalOptions = LayoutOptions.FillAndExpand;
                image.Source = src;
                image.GestureRecognizers.Add(new TapGestureRecognizer
                {
                    Command = new Command(OnTap),
                    CommandParameter = src,
                    NumberOfTapsRequired = 1
                });
                if (image != null)
                {
                    Device.BeginInvokeOnMainThread(() =>
                    {
                        images.Children.Add(image);
                    });
                }

                if (!string.IsNullOrWhiteSpace(filename))
                {
                    Document doc = new Document()
                    {
                        FileName = filename,
                        Data = data,
                        CRC = CoreUtils.CalculateCRC(data),
                        TimeStamp = DateTime.Now
                    };
                    newDocuments.Add(doc);
                }
            }
            catch
            { }
        }
        #endregion
    }
}