using System;
using System.Collections.Generic;
using System.Data.SqlClient;
using System.IO;
using System.Linq;
using System.Text;
using NUnit.Framework;
using Rhino.Mocks;
using ScrewTurn.Wiki.SearchEngine;
using ScrewTurn.Wiki.SearchEngine.Tests;
using ScrewTurn.Wiki.PluginFramework;

namespace ScrewTurn.Wiki.Plugins.SqlServer.Tests {

	[TestFixture]
	public class SqlServerPagesStorageProvider_SqlIndexTests : IndexBaseTests {

		//private const string ConnString = "Data Source=(local)\\SQLExpress;User ID=sa;Password=password;";
		private const string ConnString = "Data Source=(local)\\SQLExpress;Integrated Security=SSPI;";
		private const string InitialCatalog = "Initial Catalog=ScrewTurnWikiTest;";

		private MockRepository mocks = new MockRepository();
		private string testDir = Path.Combine(Environment.GetEnvironmentVariable("TEMP"), Guid.NewGuid().ToString());

		private delegate string ToStringDelegate(PageInfo p, string input);

		protected IHostV30 MockHost() {
			if(!Directory.Exists(testDir)) Directory.CreateDirectory(testDir);

			IHostV30 host = mocks.DynamicMock<IHostV30>();
			Expect.Call(host.GetSettingValue(SettingName.PublicDirectory)).Return(testDir).Repeat.AtLeastOnce();
			Expect.Call(host.PrepareContentForIndexing(null, null)).IgnoreArguments().Do((ToStringDelegate)delegate(PageInfo p, string input) { return input; }).Repeat.Any();
			Expect.Call(host.PrepareTitleForIndexing(null, null)).IgnoreArguments().Do((ToStringDelegate)delegate(PageInfo p, string input) { return input; }).Repeat.Any();

			mocks.Replay(host);

			return host;
		}

		public IPagesStorageProviderV30 GetProvider() {
			SqlServerPagesStorageProvider prov = new SqlServerPagesStorageProvider();
			prov.Init(MockHost(), ConnString + InitialCatalog);
			return prov;
		}

		[TestFixtureSetUp]
		public void FixtureSetUp() {
			// Create database with no tables
			SqlConnection cn = new SqlConnection(ConnString);
			cn.Open();

			SqlCommand cmd = cn.CreateCommand();
			cmd.CommandText = "if (select count(*) from sys.databases where [Name] = 'ScrewTurnWikiTest') = 0 begin create database [ScrewTurnWikiTest] end";
			cmd.ExecuteNonQuery();

			cn.Close();
		}

		[TearDown]
		public void TearDown() {
			try {
				Directory.Delete(testDir, true);
			}
			catch { }

			// Clear all tables
			SqlConnection cn = new SqlConnection(ConnString);
			cn.Open();

			SqlCommand cmd = cn.CreateCommand();
			cmd.CommandText = "use [ScrewTurnWikiTest]; delete from [IndexWordMapping]; delete from [IndexWord]; delete from [IndexDocument]; delete from [ContentTemplate]; delete from [Snippet]; delete from [NavigationPath]; delete from [Message]; delete from [PageKeyword]; delete from [PageContent]; delete from [CategoryBinding]; delete from [Page]; delete from [Category]; delete from [Namespace] where [Name] <> '';";
			try {
				cmd.ExecuteNonQuery();
			}
			catch(SqlException sqlex) {
				Console.WriteLine(sqlex.ToString());
			}

			cn.Close();
		}

		[TestFixtureTearDown]
		public void FixtureTearDown() {
			// Delete database
			SqlConnection cn = new SqlConnection(ConnString);
			cn.Open();

			SqlCommand cmd = cn.CreateCommand();
			cmd.CommandText = "alter database [ScrewTurnWikiTest] set single_user with rollback immediate";
			try {
				cmd.ExecuteNonQuery();
			}
			catch(SqlException sqlex) {
				Console.WriteLine(sqlex.ToString());
			}

			cmd = cn.CreateCommand();
			cmd.CommandText = "drop database [ScrewTurnWikiTest]";
			try {
				cmd.ExecuteNonQuery();
			}
			catch(SqlException sqlex) {
				Console.WriteLine(sqlex.ToString());
			}

			cn.Close();

			// This is neede because the pooled connection are using a session
			// that is now invalid due to the commands executed above
			SqlConnection.ClearAllPools();
		}

		/// <summary>
		/// Gets the instance of the index to test.
		/// </summary>
		/// <returns>The instance of the index.</returns>
		protected override IIndex GetIndex() {
			SqlServerPagesStorageProvider prov = GetProvider() as SqlServerPagesStorageProvider;
			prov.SetFlags(true);
			return prov.Index;
		}

	}

}