using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Windows.Data.Xml.Dom;
using Windows.UI;
using Windows.UI.Notifications;
using Windows.UI.Xaml;
using Windows.UI.Xaml.Controls;
using Windows.UI.Xaml.Media;
using Windows.UI.Xaml.Media.Imaging;

namespace FoxTube.Background
{
    public enum NotificationType
    {
        Video, Comment, Post, Internal, Changelog
    }

    public sealed class Notification
    {
        public string Channel { get; set; }
        public string Content { get; set; }
        public DateTimeOffset TimeStamp { get; set; }
        public NotificationType Type { get; set; }
        public string Avatar { get; set; }
        public string Thumbnail { get; set; }
        public string Id { get; set; }

        public Notification(string type, string id,
            string channelName, string content, DateTimeOffset date,
            string thumbnailUrl, string avatarUrl)
        {
            Channel = channelName;
            Content = content;
            TimeStamp = date;
            Id = id;
            Type = TypeConversion(type);
            Avatar = avatarUrl ?? "ms-appx:///Assets/Icons/Profile.png";
            Thumbnail = thumbnailUrl;
        }

        public Notification(string xmlSource)
        {
            System.Xml.XmlDocument d = new System.Xml.XmlDocument();
            d.InnerXml = xmlSource;
            System.Xml.XmlElement xml = d["item"];

            Channel = xml["channelName"].InnerText;
            Content = xml["content"].InnerText;
            TimeStamp = DateTimeOffset.Parse(xml.GetAttribute("time"));
            Id = xml.GetAttribute("id");
            Type = TypeConversion(xml.GetAttribute("type"));
            Avatar = xml["images"].GetAttribute("avatar");
            Thumbnail = xml["images"].GetAttribute("thumbnail");
        }

        public string GetXml()
        {
            return  $@"<item time='{TimeStamp.ToString("YYYY-MM-DDThh:mm:ss")}' type='{TypeConversion(Type)}' id='{Id}'>
                            <images thumbnail='{Thumbnail}' avatar='{Avatar}'/>
                            <channelName>{Channel}</channelName>
                            <content>{Content}</content>
                        </item>";
        }

        public Button GetNotification()
        {
            StackPanel stackPanel = new StackPanel() { Margin = new Thickness(10, 0, 0, 0) };

            //Channel
            switch (Type)
            {
                case NotificationType.Internal:
                    stackPanel.Children.Add(new TextBlock()
                    {
                        FontSize = 14,
                        FontStyle = Windows.UI.Text.FontStyle.Italic,
                        Foreground = new SolidColorBrush(Colors.Gray),
                        Text = "Developer's message"
                    });
                    break;

                case NotificationType.Changelog:
                    stackPanel.Children.Add(new TextBlock()
                    {
                        FontSize = 14,
                        FontStyle = Windows.UI.Text.FontStyle.Italic,
                        Foreground = new SolidColorBrush(Colors.Gray),
                        Text = "Changelog"
                    });
                    break;

                case NotificationType.Video:
                    stackPanel.Children.Add(new TextBlock()
                    {
                        FontSize = 14,
                        FontStyle = Windows.UI.Text.FontStyle.Italic,
                        Foreground = new SolidColorBrush(Colors.Gray),
                        Text = $"{Channel} uploaded new video"
                    });
                    break;
            }

            //Content
            stackPanel.Children.Add(new TextBlock()
            {
                TextWrapping = TextWrapping.WrapWholeWords,
                Text = Content,
            });
            //Time
            stackPanel.Children.Add(new TextBlock()
            {
                FontSize = 13,
                Foreground = new SolidColorBrush(Colors.Gray),
                Text = TimeStamp.ToString()
            });
            PersonPicture avatar = new PersonPicture()
            {
                Height = 50,
                VerticalAlignment = VerticalAlignment.Top,
                ProfilePicture = string.IsNullOrWhiteSpace(Avatar) ? null : new BitmapImage(new Uri(Avatar))
            };

            Grid grid = new Grid();
            grid.ColumnDefinitions.Add(new ColumnDefinition() { Width = new GridLength(50) });
            grid.ColumnDefinitions.Add(new ColumnDefinition());

            grid.Children.Add(avatar);
            Grid.SetColumn(stackPanel, 1);
            grid.Children.Add(stackPanel);

            Button item = new Button()
            {
                HorizontalAlignment = HorizontalAlignment.Stretch,
                HorizontalContentAlignment = HorizontalAlignment.Left,
                Background = new SolidColorBrush(Colors.Transparent),
                Content = grid
            };

            return item;
        }

        public ToastNotification GetToast()
        {
            XmlDocument template = new XmlDocument();
            switch (Type)
            {
                case NotificationType.Video:
                    template.LoadXml($@"<toast launch='video={Id}'>
                                            <visual>
                                                <binding template='ToastGeneric'>
                                                    <image placement='appLogoOverride' hint-crop='circle' src='{Avatar}'/>
                                                    <text>{Content}</text>
                                                    <text>{Channel} uploaded a new video</text>
                                                    <image src='{Thumbnail}'/>
                                                </binding>
                                            </visual>

                                            <actions>
                                                <action content='Watch later'
                                                        activationType='background'
                                                        arguments='video&{Id}&later'/>
                                                <action content='Go to channel'
                                                        arguments='video&{Id}&channel'/>
                                            </actions>
                                        </toast>");
                    break;

                case NotificationType.Changelog:
                    template.LoadXml($@"<toast launch='{Id}'>
                                            <visual>
                                                <binding template='ToastGeneric'>
                                                    <image placement='hero' src='http://foxgame.hol.es/FoxTubeAssets/WhatsNewThumb.png'/>
                                                    <image placement='appLogoOverride' hint-crop='circle' src='http://foxgame.hol.es/FoxTubeAssets/NewsAvatar.png'/>
                                                    <text>{Content}</text>
                                                    <text>{Channel}</text>
                                                </binding>
                                            </visual>
                                        </toast>");
                    break;

                case NotificationType.Internal:
                    template.LoadXml($@"<toast launch='internal={Id}'>
                                            <visual>
                                                <binding template='ToastGeneric'>
                                                    <image placement='hero' src='{Thumbnail}'/>
                                                    <image placement='appLogoOverride' hint-crop='circle' src='{Avatar}'/>
                                                    <text>{Content}</text>
                                                    <text hint-maxLines='5'>{Channel}</text>
                                                </binding>
                                            </visual>
                                        </toast>");
                    break;
            }

            return new ToastNotification(template);
        }

        private string TypeConversion(NotificationType type)
        {
            switch(type)
            {
                case NotificationType.Comment:
                    return "comment";
                case NotificationType.Post:
                    return "post";
                case NotificationType.Video:
                    return "video";
                case NotificationType.Changelog:
                    return "changelog";
                default:
                    return "internal";
            }
        }

        private NotificationType TypeConversion(string type)
        {
            switch (type)
            {
                case "comment":
                    return NotificationType.Comment;
                case "post":
                    return NotificationType.Post;
                case "video":
                    return NotificationType.Video;
                case "changelog":
                    return NotificationType.Changelog;
                default:
                    return NotificationType.Internal;
            }
        }
    }
}