#region License Information
/* HeuristicLab
 * Copyright (C) 2002-2015 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
 *
 * This file is part of HeuristicLab.
 *
 * HeuristicLab is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * HeuristicLab is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
 */
#endregion

using HeuristicLab.Clients.Hive.WebJobManager.Services;
using HeuristicLab.Clients.Hive.WebJobManager.Services.Imports;
using HeuristicLab.Clients.OKB.Query;
using Microsoft.AspNetCore.SignalR;
using Newtonsoft.Json;
using Newtonsoft.Json.Linq;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Reflection;

namespace HeuristicLab.Clients.Hive.WebJobManager.Hubs
{
    public class QueryHub : Hub
    {
        private WebLoginService weblog;
        private Guid userId;
        private QueryWebClient queryclient;
        /// <summary>
        /// Loads up the services for the client (Instance is only created upon a call from a client)
        /// </summary>
        private void loader()
        {
            weblog = WebLoginService.Instance;
            string uid = Context.QueryString["userid"];
            if (uid == null || uid == "" || Guid.Parse(uid) == Guid.Empty)
            {
                userId = Guid.Empty;
            }
            else
            {
                userId = Guid.Parse(uid);
                queryclient = weblog.getQueryClient(userId);
            }
        }
        /// <summary>
        /// Initial client request for all user, group and resource information
        /// </summary>
        public void requestInfo()
        {
            loader();
            queryclient.Refresh();

            // var values = JsonConvert.SerializeObject(queryclient.ValueNames);
            var filters = JArray.FromObject(queryclient.Filters);
            for (int i = 0; i < queryclient.Filters.Count(); i++)
            {
                if (queryclient.Filters.ToList()[i].Label != "AND" && queryclient.Filters.ToList()[i].Label != "OR")
                    ((JObject)filters[i]).Add("CompareType", queryclient.Filters.ToList()[i].GetType().GetProperty("Comparison").PropertyType.ToString());
            }

            Clients.Caller.processData(filters.ToString());
        }

        public void runQuery(string content)
        {
            loader();
            JArray data = JArray.Parse(content);
            CombinedFilter mainFilt = (CombinedFilter)queryclient.Filters.ToList().Find(x => x.Label == "AND").Clone();
            queryclient.Refresh();
            mainFilt.Filters = new List<Filter>();
            for (var i = 0; i < data.Count(); i++)
            {
                mainFilt.Filters.Add(jsonParserFilt((JObject)data[i]));
            }
            var idcol = queryclient.GetRunIds(mainFilt).ToList();

            foreach (var id in idcol)
            {
                Console.WriteLine(id);
            }

            var json = JsonConvert.SerializeObject(idcol);
            Clients.Caller.processResults(json);
        }

        public void fetchResult(string resultId)
        {
            loader();
            long id = long.Parse(resultId);
            queryclient.Refresh();
            var dat = queryclient.GetRuns(new List<long> { id }, true).First();
            var json = JsonConvert.SerializeObject(dat);
            Clients.Caller.resultLoad(json);
        }
        private Filter jsonParserFilt(JObject current)
        {
            if (current["name"] == null)
            {
                Filter filter = queryclient.Filters.ToList().Find(x => x.Label == current["Label"].ToString()).Clone();
                Type filterType = filter.GetType();
                PropertyInfo compareProp = filterType.GetProperty("Comparison");
                PropertyInfo valueProp = filterType.GetProperty("Value");
                if ((current["CompareType"].ToString()  != "HeuristicLab.Clients.OKB.Query.EqualityComparison"))
                {
                    if (compareProp != null && valueProp != null)
                    {
                        Assembly asm = filterType.Assembly;
                        Type comtype = asm.GetType(current["CompareType"].ToString());
                        Object comob = Enum.ToObject(comtype, int.Parse(current["Comparison"].ToString()));
                        Object valob = Convert.ChangeType(current["Value"].ToString(), valueProp.PropertyType);
                        compareProp.SetValue(filter, comob);
                        valueProp.SetValue(filter, valob);
                    }
                }
                return filter;
            }
            else
            {
                return jsonParserComb(current);
            }
        }
        private Filter jsonParserComb(JObject current)
        {
            CombinedFilter filt;
            if (current["name"].ToString() == "AND")
                filt = (CombinedFilter)queryclient.Filters.ToList().Find(x => x.Label == "AND").Clone();
            else
                filt = (CombinedFilter)queryclient.Filters.ToList().Find(x => x.Label == "OR").Clone();
            for (var i = 0; i < current["columns"][0].Count(); i++)
            {
                filt.Filters.Add(jsonParserFilt((JObject)current["columns"][0][i]));
            }
            return filt;

        }
    }
}