using System;
using System.IO;
using System.Collections;
using System.Xml.Serialization;

namespace ProcessInfo
{
	[ XmlInclude( typeof( Site ) ) ]
	[ XmlRoot( "settings" ) ]
	public class Settings
	{
		Site[] sites;

		public Settings()
		{
			sites = new Site[ 0 ];
		}

		public void Save( string filename )
		{
			XmlSerializer serializer = new XmlSerializer( typeof( Settings ) );
			serializer.Serialize( new FileStream( filename, FileMode.Create ), this );
		}

		public static Settings Load( string filename )
		{
			XmlSerializer serializer = new XmlSerializer( typeof( Settings ) );
			Settings settings = (Settings)serializer.Deserialize( new FileStream( filename, FileMode.Open ) );

			foreach ( Site site in settings.Sites )
			{
				if ( site.Name == null )
				{
					throw new InvalidOperationException( "Every site must have a name" );
				}

				if ( site.UrlTemplate == null )
				{
					throw new InvalidOperationException( "Every site must have a url template" );
				}
			}

			return settings;
		}

		[ XmlArray( "sites" ) ]
		[ XmlArrayItem( "site", typeof( Site ) ) ]
		public Site[] Sites
		{
			get { return sites; }
			set { sites = value; }
		}
	}
}