using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Xml.Linq;
using System.IO;
using System.Xml;

namespace MehmetDuran
{
	public class SitemapItem
	{
		public string loc { get; set; }
		public DateTime lastmod { get; set; }
		public string changefreq { get; set; }
		public string priority { get; set; }
	}

	public class Sitemap
	{
		public List<SitemapItem> Veriler { get; set; }

		public Sitemap(List<SitemapItem> veriler)
		{
			this.Veriler = veriler;
		}

		public string SitemapSonuc()
		{
			XNamespace xmlns = "http://www.sitemaps.org/schemas/sitemap/0.9";
                        XNamespace xsi = "http://www.w3.org/2001/XMLSchema-instance";
			XNamespace schemaLocation = "http://www.sitemaps.org/schemas/sitemap/0.9 http://www.sitemaps.org/schemas/sitemap/0.9/sitemap.xsd";
			
			XDocument doc = new XDocument
			(
				new XDeclaration("1.0", "UTF-8", ""),
				new XElement(
					xmlns + "urlset", 
                                        new XAttribute(xsi + "schemaLocation", schemaLocation), 
                                        new XAttribute(XNamespace.Xmlns + "xsi", xsi)
				)
			);
			foreach (SitemapItem item in Veriler)
			{
				XElement i = new XElement
				(
					xmlns + "url",
					new XElement(xmlns + "loc", item.loc),
					new XElement(xmlns + "lastmod", item.lastmod.ToString("yyyy-MM-dd")),
					new XElement(xmlns + "changefreq", item.changefreq),
					new XElement(xmlns + "priority", item.priority)
				);
				doc.Root.Add(i);
			}
			MemoryStream ms = new MemoryStream();
			XmlWriter xw = XmlWriter.Create(ms, new XmlWriterSettings() { Indent = true });
			doc.Save(xw);
			xw.Close();
			return new System.Text.UTF8Encoding().GetString(ms.ToArray());
		}
	}
}