using System;
using Lucene.Net.Analysis.Standard;
using Lucene.Net.Documents;
using Lucene.Net.QueryParsers;
using Lucene.Net.Search;
using NUnit.Framework;
using VideoGameQuotes.Api.Search.Lucene;

namespace VideoGameQuotes.Api.Tests {

	

	[TestFixture, Ignore]
	public class LuceneTests {

		[Test]
		public void Should_use_lucene() {
			var analyzer = new StandardAnalyzer(new [] { "the", "of", "a", "an" });
			const string indexDirectory = @"c:\users\tmont\code\lucene_index_test";
			var indexWriter = new Lucene.Net.Index.IndexWriter(indexDirectory, analyzer, true);

			indexWriter.AddDocument(CreateDocument(4, "cat"));
			indexWriter.AddDocument(CreateDocument(5, "catty"));
			indexWriter.AddDocument(CreateDocument(6, "Catherine"));
			indexWriter.AddDocument(CreateDocument(7, "vacate"));
			indexWriter.AddDocument(CreateDocument(8, "cat cat cat"));
			indexWriter.AddDocument(CreateDocument(9, "i'm trying to herd a cat, a cat, I say!"));
			indexWriter.AddDocument(CreateDocument(10, "the cat"));

			indexWriter.Optimize();
			indexWriter.Close();

			var parser = new QueryParser("text", analyzer);
			
			var query = parser.Parse("cat");


			var searcher = new IndexSearcher(indexDirectory);
			var hits = searcher.Search(query).ToEnumerable();
			foreach (var hit in hits) {
				Console.WriteLine("id: {0}, document: {1}, score: {2}", hit.GetId(), hit.GetDocument(), hit.GetScore());
			}
		}

		private static Document CreateDocument(int id, string text) {
			var document = new Document();
			document.Add(new Field("id", id.ToString(), Field.Store.YES, Field.Index.UN_TOKENIZED));
			document.Add(new Field("text", text, Field.Store.YES, Field.Index.TOKENIZED));
			return document;
		}

	}
}