using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Collections;

using System.Collections.ObjectModel;

using SmartMe.Core.Pipeline;

using System.Xml.Serialization;



namespace SmartMe.Core.Data

{

    /// <summary>

    /// 搜索返回的结果

    /// </summary>

    public class QueryResult : Message

    {

		#region fields

        private InputQuery _query;

        private List<SearchEngineResult> _searchEngineResultItems = new List<SearchEngineResult>();

        private List<SuggestionResult> _suggestionResultItems = new List<SuggestionResult>();

        private List<DictResult> _dictResultItems = new List<DictResult>();

        private List<IQueryResultItem> _items = new List<IQueryResultItem>();

        #endregion

        

        #region constructor



        public QueryResult()

        {

            // do nothing

        }



        public QueryResult(InputQuery query)

        {

            _query = query;

        }



        #endregion



        #region properties



        public InputQuery Query

        {

            get

            {

                return _query;

            }

            set 

            {

                _query = value;

            }

        }



        [XmlIgnore]

        public List<IQueryResultItem> Items

        {

            get {

                _items.Clear();

                foreach ( IQueryResultItem item in _searchEngineResultItems )

                {

                    _items.Add( item );

                }



                

                foreach ( IQueryResultItem item in _suggestionResultItems )

                {

                    _items.Add( item );

                }



                

                foreach ( IQueryResultItem item in _dictResultItems )

                {

                    _items.Add( item );

                }



                return _items;



                

            }

        }



        public List<SearchEngineResult> SearchEngineResultItems

        {

            get

            {

                return _searchEngineResultItems;

            }

        }



        [XmlIgnore]

        public List<SuggestionResult> SuggestionResultItems

        {

            get

            {

                return _suggestionResultItems;

            }

        }





        public List<DictResult> DictResultItems

        {

            get

            {

                return _dictResultItems;

            }

        }



        public DateTime LastUpdateTime

        {

            get;

            set;

        }





        #region IMessage Members



        public override MessageType MessageType

        {

            get

            {

                return MessageType.QueryResult;

            }

        }



        #endregion



        #endregion



        #region methods



        public bool IsEmpty()

        {

            

            foreach (SearchEngineResult r in _searchEngineResultItems)

            {

                if(r.Results.Count!=0)

                {

                    return false;

                }

            }

            foreach (DictResult  r in _dictResultItems)

            {

                if (r.Word!=string.Empty)

                {

                    return false;

                }

            }

            foreach (SuggestionResult r in _suggestionResultItems)

            {

                if (r.Results.Count!=0)

                {

                    return false;

                }

            }

            return true;

           

        }



        public override string ToString()

        {

            StringBuilder stringBuilder = new StringBuilder(_query.ToString());

            stringBuilder.Append( "\n" + _searchEngineResultItems.Count );

            foreach ( IQueryResultItem item in _searchEngineResultItems )

            {

                stringBuilder.Append("\n").Append(item);

            }



            stringBuilder.Append( "\n" + _suggestionResultItems.Count );

            foreach ( IQueryResultItem item in _suggestionResultItems )

            {

                stringBuilder.Append( "\n" ).Append( item );

            }



            stringBuilder.Append( "\n" + _dictResultItems.Count );

            foreach ( IQueryResultItem item in _dictResultItems )

            {

                stringBuilder.Append( "\n" ).Append( item );

            }





            return stringBuilder.ToString();

        }



        public override bool Equals(object obj)

        {

            QueryResult result = obj as QueryResult;

            if (result != null)

            {

                return (result.ToString() == this.ToString());

            }

            else

            {

                return false;

            }

        }



        public override int GetHashCode()

        {

            return ToString().GetHashCode();

        }



        #endregion

    }

}