using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using EchoNest.Artist;
using Elasticsearch.Net;
using MoreLinq;
using Nest;
using Sony.Filtr.Utility.Extensions;

namespace Sony.Filtr.PlaylistGeneration.Autocomplete
{
    //public class ElasticSearchAutocompleteFactory : IAutocompleteFactory
    //{
    //    public void IndexArtistAsync(string artistName)
    //    {
    //        return;
    //    }

    //    public async Task IndexArtists(IEnumerable<ArtistAutocompleteEntry> artistAutocompleteEntries)
    //    {
    //        var client = GetElasticClient();
    //        await SetupIndexAsync();
    //        await artistAutocompleteEntries.Batch(2000).ForEachAsync(4, async artistsBatch =>
    //        {
    //            await client.IndexManyAsync(artistsBatch);
    //        });
    //    }
        
    //    private async Task SetupIndexAsync()
    //    {
    //        var client = GetElasticClient();

    //        var deleteResponse = await client.DeleteIndexAsync("filtr-autocomplete", descriptor => descriptor);

    //        var createIndexRequest = new CreateIndexRequest("filtr-autocomplete");
    //        createIndexRequest.IndexSettings = new IndexSettings()
    //        {
    //            Analysis = new AnalysisSettings()
    //            {
    //                Analyzers = new Dictionary<string, AnalyzerBase>()
    //                {
    //                    {
    //                        "MyAnalyzer", new CustomAnalyzer()
    //                        {
    //                            Tokenizer = "standard",
    //                            Filter = new List<string>() { "standard", "lowercase" },
    //                            //CharFilter = new List<string>() { },
    //                        }
    //                    }
    //                },
                    
    //            }
    //        };
    //        var indexResponse = await client.CreateIndexAsync(createIndexRequest);
    //        await client.MapAsync<ArtistAutocompleteEntry>(
    //            map =>
    //                map.SearchAnalyzer("MyAnalyzer")
    //                    .IndexAnalyzer("MyAnalyzer"));
    //    }

    //    private static ElasticClient GetElasticClient()
    //    {
    //        var node = new Uri("http://ipv4.fiddler:9200");

    //        var settings = new ConnectionSettings(
    //            node,
    //            defaultIndex: "filtr-autocomplete"
    //            );
    //        settings.DisableAutomaticProxyDetection(false);
    //        var client = new ElasticClient(settings);
    //        return client;
    //    }

    //    public IEnumerable<ArtistAutocompleteResult> SearchArtists(string search, int count)
    //    {
    //        var result =
    //            GetElasticClient()
    //                .Search<ArtistAutocompleteEntry>(
    //                    s => s.Query(q=>
    //                            q.FunctionScore(descriptor => 
    //                                descriptor.
    //                                    Functions(fu=> fu.FieldValueFactor(a=> a.Field(ai=> ai.Familiarity).Factor(1))))
    //                         && (
    //                            q.Match(m=> m.Query(search + "*").Fuzziness(1).Boost(2).OnField(k=> k.Name))
    //                            || q.Match(m=> m.Query(search).Fuzziness(1).OnField(k=> k.Name))
    //                            || q.Match(m => m.Query(search).Fuzziness(1).OnField(k => k.Aliases))
    //                         )
    //                    ));


    //        return result.Hits.Select(t => new ArtistAutocompleteResult()
    //        {
    //            Name = t.Source.Name,
    //            Score = t.Score,
    //        });
    //    }
    //}
}