using System.Diagnostics;
using System.Linq;
using System.Text.RegularExpressions;
using Centron.BusinessLogic.Administration.Settings;
using Centron.BusinessLogic.IndexSearch;
using Centron.BusinessLogic.Sales.Support;
using Centron.BusinessLogic.WebServices.Sales.Support;
using Centron.DAO.AdoNETDataAccess;
using Centron.Data.Entities.Sales.Support;
using Centron.Interfaces.BL;
using Centron.Tests.EndToEnd.Infrastructure;
using Xunit.Abstractions;

namespace Centron.Tests.EndToEnd.Tests.IndexSearch;

public class IndexSearchTests : EndToEndTest
{
    public IndexSearchTests(ITestOutputHelper testOutputHelper) 
        : base(testOutputHelper)
    {
    }

    public override void Execute()
    {
        // First, index everything
        this.WithSession(s => s.GetBL<IndexSearchBL>().UpdateAllIndexes(default));
        this.Verifier.VerifySql("Index_Count", "SELECT Count = COUNT(*) FROM dbo.ObjectFulltextIndex");
        this.Verifier.VerifySql("IndexStats_Count", "SELECT Count = COUNT(*) FROM dbo.ObjectFulltextIndexStats");

        // Remove a ticket (it should get removed from the index)
        this.Sql("DELETE FROM dbo.hlpdsk_requests WHERE I3D = 10");

        // Set one ticket to "update requested"
        this.UpdateTicket();

        // Now, update all indexes again
        var sqlStatements = SqlDiagnosticObserver.Start(() =>
        {
            this.WithSession(s => s.GetBL<IndexSearchBL>().UpdateAllIndexes(default));
        });
        this.Verifier.Verify("Statements", sqlStatements.Select(f => NormalizeSqlAliasNumbers(f.CommandText)));
        
        // Try querying something
        var result = this.WithSession(s => s.GetBL<IndexSearchBL>().SearchIndex("gmbh ve"));
        this.Verifier.Verify("Search_Result", result.Select(f => new { Kind = f.Kind, ObjectI3D = f.ObjectI3D, }).Distinct().OrderBy(f => f.ObjectI3D));
        
        // Query tickets
        this.QueryTickets();
    }

    private void UpdateTicket()
    {
        var ticket = this.WithSession(s => s.GetBL<HelpdeskWebServiceBL>().GetHelpdeskByI3D(11, this.GetLoggedInUser())).ThrowIfError();
        this.WithSession(s => s.GetBL<HelpdeskWebServiceBL>().SaveHelpdesk(ticket, this.GetLoggedInUser()));
    }

    private static string NormalizeSqlAliasNumbers(string sqlStatement)
    {
        return Regex.Replace(sqlStatement, @"\b([A-Za-z][A-Za-z0-9]*\d+)_\d+_", "$1_alias_");
    }

    private void QueryTickets()
    {
        var filter = new HelpdeskFilter
        {
            SearchText = "Dell telefoniert", 
        };

        for (int i = 1; i <= 100; i++)
        {
            // Enable fulltext-search
            var settings2 = this.WithSession(s => s.GetBL<AppSettingsGroupBL>().GetFulltextIndexServiceSettings());
            settings2.IsFulltextIndexServiceActive = true;
            this.WithSession(s => s.GetBL<AppSettingsGroupBL>().UpdateFulltextIndexServiceSettings(settings2));

            var indexSearchWatch = Stopwatch.StartNew();
            var indexSearchTickets = this.WithSession(s => s.GetBL<HelpdeskSearchWebServiceBL>().GetHelpdesksThroughPaging(filter, HelpdeskSort.Number, true, 1, int.MaxValue, this.GetLoggedInUser()));
            indexSearchWatch.Stop();
            
            // Disable fulltext-search
            var settings1 = this.WithSession(s => s.GetBL<AppSettingsGroupBL>().GetFulltextIndexServiceSettings());
            settings1.IsFulltextIndexServiceActive = false;
            this.WithSession(s => s.GetBL<AppSettingsGroupBL>().UpdateFulltextIndexServiceSettings(settings1));
            
            var oldSearchWatch = Stopwatch.StartNew();
            var oldSearchTickets = this.WithSession(s => s.GetBL<HelpdeskSearchWebServiceBL>().GetHelpdesksThroughPaging(filter, HelpdeskSort.Number, true, 1, int.MaxValue, this.GetLoggedInUser()));
            oldSearchWatch.Stop();
            
            this.TestOutputHelper.WriteLine($"Run {i}: {(oldSearchWatch.Elapsed < indexSearchWatch.Elapsed ? "old" : "new")}");
        }
    }
}