package feeder

import "os"
import "xmlx"

func (this *Feed) readAtom(doc *xmlx.Document) (err os.Error) {
	ns := "http://www.w3.org/2005/Atom";
	channels := doc.SelectNodes(ns, "feed");
	for _, node := range channels {
		ch := Channel{};
		ch.Title = node.GetValue(ns, "title");
		ch.LastBuildDate = node.GetValue(ns, "updated");
		ch.Id = node.GetValue(ns, "id");
		ch.Rights = node.GetValue(ns, "rights");

		list := node.SelectNodes(ns, "link");
		ch.Links = make([]Link, len(list));
		for i, v := range list {
			ch.Links[i].Href = v.GetAttr("", "href");
			ch.Links[i].Rel = v.GetAttr("", "rel");
			ch.Links[i].Type = v.GetAttr("", "type");
			ch.Links[i].HrefLang = v.GetAttr("", "hreflang");

		}

		tn := node.SelectNode(ns, "subtitle");
		if tn != nil {
			ch.SubTitle = SubTitle{};
			ch.SubTitle.Type = tn.GetAttr("", "type");
			ch.SubTitle.Text = tn.Value;
		}

		tn = node.SelectNode(ns, "generator");
		if tn != nil {
			ch.Generator = Generator{};
			ch.Generator.Uri = tn.GetAttr("", "uri");
			ch.Generator.Version = tn.GetAttr("", "version");
			ch.Generator.Text = tn.Value;
		}

		tn = node.SelectNode(ns, "author");
		if tn != nil {
			ch.Author = Author{};
			ch.Author.Name = tn.GetValue("", "name");
			ch.Author.Uri = tn.GetValue("", "uri");
			ch.Author.Email = tn.GetValue("", "email");
		}

		list = node.SelectNodes(ns, "entry");
		ch.Items = make([]Item, len(list));
		for _, v := range list {
			item := Item{};
			item.Title = v.GetValue(ns, "title");
			item.Id = v.GetValue(ns, "id");
			item.PubDate = v.GetValue(ns, "updated");
			item.Description = v.GetValue(ns, "summary");

			list = v.SelectNodes(ns, "link");
			item.Links = make([]Link, 0);
			for _, lv := range list {
				if tn.GetAttr(ns, "rel") == "enclosure" {
					enc := Enclosure{};
					enc.Url = lv.GetAttr("", "href");
					enc.Type = lv.GetAttr("", "type");
					item.addEnclosure(enc);
				} else {
					lnk := Link{};
					lnk.Href = lv.GetAttr("", "href");
					lnk.Rel = lv.GetAttr("", "rel");
					lnk.Type = lv.GetAttr("", "type");
					lnk.HrefLang = lv.GetAttr("", "hreflang");
					item.addLink(lnk);
				}
			}

			list = v.SelectNodes(ns, "contributor");
			item.Contributors = make([]string, len(list));
			for ci, cv := range list {
				item.Contributors[ci] = cv.GetValue("", "name");
			}

			tn = v.SelectNode(ns, "content");
			if tn != nil {
				item.Content = Content{};
				item.Content.Type = tn.GetAttr("", "type");
				item.Content.Lang = tn.GetValue("xml", "lang");
				item.Content.Base = tn.GetValue("xml", "base");
				item.Content.Text = tn.Value;
			}
			ch.addItem(item);
		}

		this.addChannel(ch);
	}
	return
}