using DevExpress.Mvvm.Native;
using DevExpress.PivotGrid.DataCalculation;
using DevExpress.XtraPrinting.Preview;
using DevExpress.XtraReports.UI;
using DigitalData.Modules.Database;
using DigitalData.Modules.Language;
using DigitalData.Modules.Logging;
using System.Data;
using System.Data.SqlClient;
using System.Text;

namespace ReportViewer
{
    public class ReportDataLoader
    {
        private LogConfig _logConfig;
        private Logger _logger;
        private Config _config;
        private DocumentViewer _documentViewer;
        private MSSQLServer _database;

        public ReportDataLoader(LogConfig logConfig, Config config, MSSQLServer database, DocumentViewer documentViewer)
        {
            _logConfig = logConfig;
            _logger = logConfig.GetLogger();
            _config = config;
            _documentViewer = documentViewer;
            _database = database;
        }

        public void Load(DateTime? date, Config.ServiceProvider provider)
        {
            var orders = LoadFromDatabase(date, provider).Where(o => o.ShipmentIdentifiers.Length > 0).ToList();
            var data = new ReportData { Orders = orders };

            LoadIntoViewer(data);
        }

        public void Print()
        {
            if (_documentViewer.DocumentSource == null)
                return;

            ReportTemplate report = (ReportTemplate)_documentViewer.DocumentSource;
            ReportPrintTool printTool = new ReportPrintTool(report);

            printTool.PreviewRibbonForm.PrintControl.UseDirectXPaint = DevExpress.Utils.DefaultBoolean.True;
            printTool.PrintDialog();
        }

        private void LoadIntoViewer(ReportData data)
        {
            var report = new ReportTemplate() { DataSource = data, DataMember = "Orders" };
            report.CreateDocument(false);

            _documentViewer.DocumentSource = report;
        }

        public class PackagingInfo
        {
            public string Identifier = "";
            public int? LoadingAmount;
            public string? LoadingType;

            public string Loading
            {
                get
                {
                    return $"{LoadingAmount} {LoadingType}";
                }
            }
        }  


        public static List<PackagingInfo> ParsePackagingInfo(string packagingInfo)
        {
            if (packagingInfo == null) 
                return new List<PackagingInfo>();

            var lines = packagingInfo.Split("\n");
            var result = new List<PackagingInfo>();

            // Example:
            // 310055680000000387 | EP
            // 310055680000000394 | GP
            // 310055680000000400 | KW
            // 310055680000000417 | HP

            foreach (var line in lines)
            {
                var list = line.Split("|").Select(s => s.Trim()).ToList();

                if (list.Count == 0)
                    continue;

                var identifier = list[0];

                result.Add(new PackagingInfo()
                {
                    Identifier = identifier,
                    LoadingType = GetLoadingType(list),
                    LoadingAmount = 1
                });
            };

            return result;
        }

        public static string GetLoadingType(List<string> list)
        {
            var colliOnlyRegex = new System.Text.RegularExpressions.Regex("\\d{0,2}\\s?(\\w+)");

            if (list.Count == 0)
            {
                return "";
            } 
            else
            {
                var value = (list[1] ?? "").Trim();

                if (colliOnlyRegex.IsMatch(value))
                {
                    var match = colliOnlyRegex.Match(value);
                    return match.Groups[1].Value;
                } 
                else
                {
                    return value;
                }
            }
        }

        private List<ReportData.Order> LoadFromDatabase(DateTime? date, Config.ServiceProvider provider)
        {
            var orders = new List<ReportData.Order>();
    
            try
            {
                var sqlCommand = new SqlCommand("SELECT * FROM t025 WHERE c044 IS NOT NULL AND c045 IS NOT NULL AND U047 IS NOT NULL");

                if (date != null)
                {
                    sqlCommand = new SqlCommand("SELECT * FROM t025 WHERE c044 IS NOT NULL AND c045 IS NOT NULL WHERE c029 = '@DATE'");
                    sqlCommand.Parameters.Add("DATE", SqlDbType.DateTime).Value = date;
                }

                var table = _database.GetDatatable(sqlCommand);               
                var position = 1;

                foreach (DataRow row in table.Rows)
                {
                    var trackingNumber = row.ItemEx<string>("U047", "");
                    var list = ParsePackagingInfo(trackingNumber);
                    var identifiers = list.Select(i => i.Identifier).JoinString(Environment.NewLine);
                    var loadings = list.Select(i => i.Loading).JoinString(Environment.NewLine);

                    orders.Add(new ReportData.Order()
                    {
                        Id = position++,
                        OrderDate = row.ItemEx<DateTime>("c029"),
                        OrderNumber = row.ItemEx<string>("c044", ""),
                        WeightAmount = row.ItemEx<double>("c154"),
                        WeightUnit = "kg",
                        ShipmentIdentifiers = identifiers,
                        Loadings = loadings,
                        InformationForDriver = row.ItemEx("u046", ""),
                        InformationForDeliveryNotice = row.ItemEx("u048", ""),
                        InformationForDevlieryAdditional = row.ItemEx("u049", ""),
                        Receiver = new ReportData.Address()
                        {
                            Name = row.ItemEx<string>("c010", ""),
                            Street = row.ItemEx<string>("c012", ""),
                            City = row.ItemEx<string>("c014", ""),
                            Zip = row.ItemEx<string>("c013", ""),
                            Country = row.ItemEx<string>("c017", "")
                        },
                        Head = new ReportData.HeadData()
                        {
                            Title = provider.Title,
                            Receiver = new ReportData.Address()
                            {
                                Name = provider.Name,
                                Street = provider.Street,
                                Zip = provider.ZipCode,
                                City = provider.City
                            }
                        }
                    });

                }
            }
            catch (Exception e)
            {
                _logger.Error(e);               
            }         

            return orders;

            //return new List<ReportData.Order>()
            //{
            //    new ReportData.Order()
            //    {
            //        Id = 1,
            //        OrderDate = DateTime.Now,
            //        OrderNumber = "SchaumGLS37564",
            //        WeightAmount = 17.4,
            //        WeightUnit = "kg",
            //        ShipmentIdentifiers = "9378556904370895740985",
            //        Receiver = new ReportData.Receiver()
            //        {
            //            Name = "Ernst Stein GmbH & Co. KG",
            //            Street = "Herrbert von Ingenhausenweg 21",
            //            City = "Hemer - Westig",
            //            Zip = "12345",
            //            Country = "D"
            //        }
            //    },
            //    new ReportData.Order()
            //    {
            //        Id = 1,
            //        OrderDate = DateTime.Now,
            //        OrderNumber = "SchaumGLS37564",
            //        WeightAmount = 17.4,
            //        WeightUnit = "kg",
            //        ShipmentIdentifiers = "9378556904370895740985",
            //        Receiver = new ReportData.Receiver()
            //        {
            //            Name = "Ernst Stein GmbH & Co. KG",
            //            Street = "Herrbert von Ingenhausenweg 21",
            //            City = "Hemer - Westig",
            //            Zip = "12345",
            //            Country = "D"
            //        }
            //    }
            //};
        }
    }
}