using System;
using System.Net;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Ink;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;
using System.Collections.Generic;
using System.Xml.Linq;
using Tumblife.Model;
using Tumblife.Util;

namespace Tumblife.Tumblr
{
  public class TLPostParser
  {
    public static ICollection<TLPost> Parse(String xml)
    {
      Log.debug("TLPostParser / Parse");

      ICollection<TLPost> posts = new List<TLPost>(50);

      XDocument document = XDocument.Parse(xml);

      foreach (XElement _post in document.Descendants("post")) {

        TLPost post = new TLPost();
        XElement element;

        post.Id = (long)_post.Attribute("id");
        post.Url = (String)_post.Attribute("url");
        post.UrlWithSlug = (String)_post.Attribute("url-with-slug");
        post.Type = (String)_post.Attribute("type");
        post.DateGmt = (String)_post.Attribute("date-gmt");
        post.Date = (String)_post.Attribute("date");
        post.UnixTimestamp = (int)_post.Attribute("unix-timestamp");
        post.Format = (String)_post.Attribute("format");
        post.ReblogKey = (String)_post.Attribute("reblog-key");
        post.Slug = (String)_post.Attribute("slug");
        post.NoteCount = (int)_post.Attribute("note-count");

        var tumblelog = _post.Element("tumblelog");
        post.TumblelogTitle = (String)tumblelog.Attribute("title");
        post.TumblelogName = (String)tumblelog.Attribute("name");
        post.TumblelogUrl = (String)tumblelog.Attribute("url");
        post.TumblelogTimezone = (String)tumblelog.Attribute("timezone");

        element = _post.Element("tag");
        post.Tag = (element == null) ? null : (String)element.Value;

        switch (post.Type) {
          case "quote":
            element = _post.Element("quote-text");
            post.QuoteText = (element == null) ? null : (String)element.Value;

            element = _post.Element("quote-source");
            post.QuoteSource = (element == null) ? null : (String)element.Value;

            break;

          case "photo":
            post.IsPhoto = true;

            element = _post.Element("photo-caption");
            post.PhotoCaption = (element == null) ? null : (String)element.Value;

            element = _post.Element("photo-link-url");
            post.PhotoLinkUrl = (element == null) ? null : (String)element.Value;

            foreach (XElement photoUrl in _post.Descendants("photo-url")) {
              String maxWidth = (String)photoUrl.Attribute("max-width");
              String value = (String)photoUrl.Value;
              switch (maxWidth) {
                case "1280":
                  post.PhotoUrlMaxWidth1280 = value;
                  break;
                case "500":
                  post.PhotoUrlMaxWidth500 = value;
                  break;
                case "400":
                  post.PhotoUrlMaxWidth400 = value;
                  break;
                case "250":
                  post.PhotoUrlMaxWidth250 = value;
                  break;
                case "100":
                  post.PhotoUrlMaxWidth100 = value;
                  break;
                case "75":
                  post.PhotoUrlMaxWidth75 = value;
                  break;
              }
            }

            break;

          case "regular":
            element = _post.Element("regular-title");
            post.RegularTitle = (element == null) ? null : (String)element.Value;

            element = _post.Element("regular-body");
            post.RegularBody = (element == null) ? null : (String)element.Value;

            break;

          case "link":
            element = _post.Element("link-text");
            post.LinkText = (element == null) ? null : (String)element.Value;

            element = _post.Element("link-url");
            post.LinkUrl = (element == null) ? null : (String)element.Value;

            element = _post.Element("link-description");
            post.LinkDescription = (element == null) ? null : (String)element.Value;

            break;

          case "video":
            element = _post.Element("video-caption");
            post.VideoCaption = (element == null) ? null : (String)element.Value;

            element = _post.Element("video-source");
            post.VideoSource = (element == null) ? null : (String)element.Value;

            element = _post.Element("video-player");
            post.VideoPlayer = (element == null) ? null : (String)element.Value;

            break;

          case "audio":
            element = _post.Element("audio-caption");
            post.AudioCaption = (element == null) ? null : (String)element.Value;

            element = _post.Element("audio-player");
            post.AudioPlayer = (element == null) ? null : (String)element.Value;

            element = _post.Element("download-url");
            post.DownloadUrl = (element == null) ? null : (String)element.Value;

            break;

          case "conversation":
            element = _post.Element("conversation-title");
            post.ConversationTitle = (element == null) ? null : (String)element.Value;

            element = _post.Element("conversation-text");
            post.ConversationText = (element == null) ? null : (String)element.Value;

            String lines = "";
            foreach (XElement line in _post.Descendants("line")) {
              String label = (String)line.Attribute("label");
              String value = (String)line.Value;
              lines += "<p>" + label + value + "</p>";
            }
            post.Conversation = lines;

            break;
        }

        posts.Add(post);
      }

      return posts;
    }
  }
}