using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Reflection;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Forms;
using Comal.Classes;
using InABox.Clients;
using InABox.Configuration;
using InABox.Core;
using InABox.Database;
using InABox.Database.SQLite;
using InABox.DynamicGrid;
using InABox.WPF;
using Org.BouncyCastle.Math.EC.Multiplier;
using Syncfusion.Windows.Controls;
using MessageBox = System.Windows.MessageBox;

namespace PRSDesktop
{
    

    
    public class Utility
    {
        //private void UpgradeShipmentLinks(Entity[] notifications)
        //{
        //    int i = 1;
        //    foreach (DeliveryNotification notification in notifications)
        //    {
        //        Progress.SetMessage(String.Format("Converting Delivery Notifications {0} / {1}", i, notifications.Length));
        //        notification.ShipmentLink = new ShipmentLink();
        //        if (notification.Shipment != null)
        //        {
        //            notification.ShipmentLink.ID = notification.Shipment.ID;
        //            notification.Shipment = null;
        //        }
        //        i++;
        //    }
        //}

        private static bool HasDocumentLinks<T>()
        {
            var props = typeof(T).GetProperties().Where(x =>
                x.PropertyType.Equals(typeof(DocumentLink)) || x.PropertyType.Equals(typeof(ImageDocumentLink)) ||
                x.PropertyType.Equals(typeof(PDFDocumentLink)));
            return props.Any();
        }

        private static Guid[] GetDocuments<T>(T entity)
        {
            var result = new List<Guid>();
            var props = typeof(T).GetProperties().Where(x =>
                x.PropertyType.Equals(typeof(DocumentLink)) || x.PropertyType.Equals(typeof(ImageDocumentLink)) ||
                x.PropertyType.Equals(typeof(PDFDocumentLink)));
            foreach (var prop in props)
            {
                var link = (IEntityLink)prop.GetValue(entity);
                if (link.IsValid())
                    result.Add(link.ID);
            }

            return result.ToArray();
        }

        //private static bool CopyType<T>(int typeno, int typecount, IProvider source, IProvider target) where T : Entity, new()
        //{

        //    String name = typeof(T).EntityName().Split('.').Last();

        //    //if (!HasDocumentLinks<T>())
        //    //    return false;


        //    Progress.SetMessage(String.Format("[{0}/{1}] {2}: Loading Source Items..", typeno, typecount, name));
        //    var sourceitems = source.Load<T>();

        //    Progress.SetMessage(String.Format("[{0}/{1}] {2}: Loading Target Items..", typeno, typecount, name));
        //    var targetitems = target.Load<T>();

        //    //if (sourceitems.Count() == targetitems.Count())
        //    //    return false;

        //    //Progress.SetMessage(String.Format("[{0}/{1}] {2}: Deleting Target Items..", typeno, typecount, name));
        //    //foreach (var targetitem in targetitems)
        //    //    target.Delete(targetitem);


        //    for (int i=0; i<sourceitems.Length; i++)
        //    {
        //        Progress.SetMessage(String.Format("[{0}/{1}] {2}: Copying Items ({3:F2}% complete)..", typeno, typecount, name, (double)i * 100.0F / (double)sourceitems.Length));
        //        var sourceitem = sourceitems[i];

        //        if (ClientFactory.IsSupported<AuditTrail>())
        //        {
        //            var audits = source.Load<AuditTrail>(new Filter<AuditTrail>(x => x.EntityID).IsEqualTo(sourceitem.ID));
        //            foreach (var audit in audits)
        //                target.Save(audit);
        //        }
        //        if (sourceitem is IEntityDocument)
        //        {
        //            var entdoc = (IEntityDocument)sourceitem;
        //            if (entdoc.DocumentLink.ID != Guid.Empty)
        //            {
        //                var doc = source.Load(new Filter<Document>(x => x.ID).IsEqualTo(entdoc.DocumentLink.ID)).FirstOrDefault();
        //                if (doc != null)
        //                    target.Save(doc);
        //                else
        //                    entdoc.DocumentLink.ID = Guid.Empty;
        //            }
        //        }

        //        Guid[] docids = GetDocuments<T>(sourceitem);
        //        foreach (var docid in docids)
        //        {
        //            var doc = source.Load(new Filter<Document>(x => x.ID).IsEqualTo(docid)).FirstOrDefault();
        //            if (doc != null)
        //                target.Save(doc);
        //        }

        //        target.Delete(sourceitem);

        //        target.Save(sourceitem);
        //    }

        //    target.CommitTransaction();

        //    return true;

        //    #region oldcode
        //    //open.Invoke(target, new object[] { "Duplicate", true });
        //    ////if (items.Length != orig.Count)
        //    //{
        //    //    Progress.SetMessage(string.Format("{0}/{1} {2}: Clearing..", t + 1, types.Count, type.Name));
        //    //    for (int i = 0; i < orig.Count; i++)
        //    //    {
        //    //        //Progress.SetMessage(string.Format("{0}/{1} {2}: Resetting ({3:F2}% complete)..", t + 1, types.Length, type.Name, (double)i * 100.0F / (double)orig.Count));
        //    //        delete.Invoke(target, new object[] { orig[i] });
        //    //    }

        //    //    Progress.SetMessage(string.Format("{0}/{1} {2}: Rebuilding..", t + 1, types.Count, type.Name));
        //    //    for (int i = 0; i < items.Count; i++)
        //    //    {
        //    //        //if (i > 10)
        //    //        //    return;

        //    //        var item = items[i];


        //    //        //double progress = (double)i * 100.0F / (double)items.Length;
        //    //        ////Progress.SetMessage(string.Format("{0}/{1} {2}: Copying ({3:F2}% complete)..", t + 1, types.Length, type.Name, progress));

        //    //        //// Check and copy source document if required
        //    //        //if (item is IEntityDocument)
        //    //        //{
        //    //        //    var entdoc = (IEntityDocument)item;
        //    //        //    var doccli = new RemoteClient<Document>(URL, Port);
        //    //        //    doccli.UserID = "FROGSOFTWARE";
        //    //        //    doccli.Password = "FROGSOFTWARE";
        //    //        //    //Progress.SetMessage(string.Format("{0}/{1} {2}: Copying (Documents)", t + 1, types.Length, type.Name));

        //    //        //    var docfilter = new Filter<Document>(x => x.ID).IsEqualTo(entdoc.DocumentLink.ID);

        //    //        //    var document = doccli.Load(docfilter).FirstOrDefault(); ;
        //    //        //    if (document != null)
        //    //        //        target.Save(document);
        //    //        //}

        //    //        //Progress.SetMessage(string.Format("{0}/{1} {2}: Copying ({3:F2}% complete).. (Saving)", t + 1, types.Length, type.Name, progress));
        //    //        save.Invoke(target, new object[] { item });


        //    //        //Dictionary<String, Object> values = item.GetValues(true);
        //    //        //var member = CoreUtils.GetMemberExpression(type, "ID");
        //    //        //var filter = Activator.CreateInstance(typeof(Filter<>).MakeGenericType(type));
        //    //        //CoreUtils.SetPropertyValue(filter, "Expression", member);
        //    //        //CoreUtils.SetPropertyValue(filter, "Operator", Operator.IsEqualTo);
        //    //        //CoreUtils.SetPropertyValue(filter, "Value", item.ID);

        //    //        //BaseObject[] compare = (BaseObject[])(load.Invoke(provider, new object[] { filter, null }));
        //    //        //BaseObject newitem = compare.FirstOrDefault();
        //    //        //if (newitem != null)
        //    //        //{
        //    //        //    var changes = newitem.Compare(values);
        //    //        //    if (changes.Any())
        //    //        //        throw new Exception(String.Format("Object Values have changed!\n\n{0}", String.Join("\n", changes)));
        //    //        //}
        //    //    }

        //    //}
        //    //target.CommitTransaction();
        //    //close.Invoke(target, new object[] { "Duplicate", true });  
        //    #endregion

        //}

        private static List<string> CompareType<T>(int typeno, int typecount, IProvider source, IProvider target) where T : Entity, new()
        {
            var result = new List<string>();

            var name = typeof(T).EntityName().Split('.').Last();

            Progress.SetMessage(string.Format("[{0}/{1}] {2}: Reloading Source Table..", typeno, typecount, name));
            //var items = local.Load();
            var sourcetable = source.Query<T>();
            Progress.SetMessage(string.Format("[{0}/{1}] {2}: Reloading Target Table..", typeno, typecount, name));
            var targettable = target.Query<T>();

            for (var i = 0; i < sourcetable.Rows.Count; i++)
            {
                Progress.SetMessage(string.Format("[{0}/{1}] {2}: Comparing Values ({3:F2}% complete)..", typeno, typecount, name,
                    (double)i * 100.0F / sourcetable.Rows.Count));
                var sourcerow = sourcetable.Rows[i];
                var id = sourcerow.Get<Guid>("ID");
                var targetrow = targettable.Rows.FirstOrDefault(r => r.Get<Guid>("ID").Equals(id));
                if (targetrow == null)
                    result.Add(string.Format("{0}: Row [{1}] is missing in target database", name, id));
                else
                    foreach (var col in targettable.Columns)
                    {
                        var targetvalue = targetrow[col.ColumnName];
                        var sourcevalue = sourcerow[col.ColumnName];
                        if (targetvalue == null)
                        {
                            if (sourcevalue != null)
                                result.Add(string.Format("{0}: Row [{1}].{2} is null in target, but [{3}] in source", name, id, col.ColumnName,
                                    sourcevalue));
                        }
                        else if (!targetvalue.Equals(sourcevalue))
                        {
                            result.Add(string.Format("{0}: Row [{1}].{2} is [{3}] in target, but [{4}] in source", name, id, col.ColumnName,
                                targetvalue,
                                sourcevalue));
                        }
                    }
            }

            return result;
        }

        private static void LoadType(Type type, List<Type> into, Type[] exclude)
        {
            if (exclude.Contains(type) || into.Contains(type))
                return;

            var props = type.GetProperties().Where(x => x.PropertyType.GetInterfaces().Contains(typeof(IEntityLink)));
            if (!props.Any())
            {
                into.Insert(0, type);
            }
            else
            {
                foreach (var prop in props)
                {
                    var subtype = prop.PropertyType.BaseType.GetGenericArguments().First();
                    if (subtype != type)
                        LoadType(subtype, into, exclude);
                }

                into.Add(type);
            }
        }

        public static void DuplicateDatabase()
        {
            using (var ofd = new OpenFileDialog())
            {
                ofd.Filter = "SQLite Database Files (*.dbs)|*.dbs";
                ofd.DefaultExt = "dbs";

                ofd.InitialDirectory = Path.GetDirectoryName(DbFactory.Provider.URL);
                ofd.FileName = "";
                ofd.Multiselect = false;
                ofd.CheckFileExists = true;
                var result = ofd.ShowDialog();

                if (result != DialogResult.OK || string.IsNullOrWhiteSpace(ofd.FileName))
                    return;

                BaseObject.GlobalObserving = false;

                IProvider source = new SQLiteProvider(ofd.FileName);

                Progress.Show("Opening Source Database");
                source.Types = DbFactory.Provider.Types;
                source.Start();

                try
                {
                    var types = CoreUtils.TypeList(
                        AppDomain.CurrentDomain.GetAssemblies(),
                        x =>
                            x.IsClass
                            && !x.IsGenericType
                            && x.IsSubclassOf(typeof(Entity))
                            && !x.Equals(typeof(AuditTrail))
                            && x.Equals(typeof(Setout))
                            && x.GetInterfaces().Contains(typeof(IRemotable))
                    );

                    var orderedtypes = new List<Type>();
                    foreach (var type in types)
                        LoadType(type, orderedtypes,
                            new[] { typeof(Document), /* typeof(Comal.Classes.Calendar), */ typeof(Email), typeof(GPSTrackerLocation) });

                    var results = new List<string>();

                    orderedtypes = orderedtypes.Where(x => x.Equals(typeof(Setout))).ToList();

                    for (var i = 0; i < orderedtypes.Count; i++)
                    {
                        var type = orderedtypes[i];
                        var copy = typeof(Utility).GetMethod("CopyType", BindingFlags.Static | BindingFlags.NonPublic).MakeGenericMethod(type);
                        var copied = (bool)copy.Invoke(null, new object[] { i, orderedtypes.Count, source, DbFactory.Provider });

                        if (copied)
                        {
                            var compare = typeof(Utility).GetMethod("CompareType", BindingFlags.Static | BindingFlags.NonPublic)
                                .MakeGenericMethod(type);
                            compare.Invoke(null, new object[] { i, orderedtypes.Count, source, DbFactory.Provider });
                        }
                    }

                    File.WriteAllText("compare.text", string.Join("\n", results));

                    Progress.Close();
                    MessageBox.Show("All Done");
                }
                catch (Exception e)
                {
                    Progress.Close();
                    MessageBox.Show("Import Failed!\n\n" + e.Message + "\n\n" + e.StackTrace);
                }

                BaseObject.GlobalObserving = true;
            }
        }

        private static void EmptyStores(params Type[] entities)
        {
            foreach (var entity in entities)
            {
                var client = ClientFactory.CreateClient(entity);
                try
                {
                    var items = client.Load();
                    if (items != null)
                        foreach (var item in items)
                            client.Delete(item, "Emptying Store");
                }
                catch (Exception e)
                {
                    throw new Exception(string.Format("{1}\nType: {0}", entity.Name, e.Message));
                }
            }
        }

        private static void EmptyStores()
        {
            var entities = CoreUtils.TypeList(
                new[]
                {
                    typeof(Setout).Assembly
                },
                myType =>
                    myType.IsClass
                    && !myType.IsAbstract
                    && !myType.IsGenericType
                    && myType.IsSubclassOf(typeof(Entity))
                    && myType.GetInterfaces().Contains(typeof(IPersistent))
            ).ToArray();
            EmptyStores(entities);
        }

        public static string[] ProcessNotes(string[] notes, string description)
        {
            var Notes = notes != null ? notes.ToList() : new List<string>();
            if (!string.IsNullOrWhiteSpace(description) && !description.Equals("Enter Description of Task Here"))
            {
                var bFound = false;
                for (var i = 0; i < Notes.Count; i++)
                    if (!string.IsNullOrWhiteSpace(Notes[i]) && Notes[i].Contains(description))
                    {
                        Notes[i] = description;
                        bFound = true;
                    }

                if (!bFound)
                    Notes.Insert(0, description);
            }

            return Notes.Select(x => CoreUtils.StripHTML(x)).ToArray();
        }

        public static void SetupColumns()
        {
            var usercolumns = new DynamicGridColumns
            {
                new() { ColumnName = "UserID", Width = 0, Caption = "User ID" },
                new() { ColumnName = "Password", Width = 0, Caption = "Password" }
            };
            new GlobalConfiguration<DynamicGridColumns>(typeof(User).Name).Save(usercolumns);

            var empcolumns = new DynamicGridColumns
            {
                new() { ColumnName = "Code", Width = 200, Caption = "Code" },
                new() { ColumnName = "Name", Width = 0, Caption = "Name" },
                new() { ColumnName = "CanAllocateTasks", Width = 40, Caption = "Tasks?" },
                new() { ColumnName = "PayrollID", Width = 200, Caption = "Payroll ID" }
            };
            new GlobalConfiguration<DynamicGridColumns>(typeof(Employee).Name).Save(empcolumns);

            var jobcolumns = new DynamicGridColumns
            {
                new() { ColumnName = "Number", Width = 50, Caption = " Job #", /* Type = typeof(int),  */ Alignment = Alignment.MiddleCenter },
                new() { ColumnName = "Name", Width = 0, Caption = " Name" /* , Type = typeof(String) */ }
            };
            new GlobalConfiguration<DynamicGridColumns>(typeof(Job).Name).Save(jobcolumns);

            var setoutcolumns = new DynamicGridColumns
            {
                new() { ColumnName = "Number", Width = 80 /* , Type = typeof(String) */ },
                new() { ColumnName = "Title", Width = 200 /* , Type = typeof(String) */ },
                new() { ColumnName = "Description", Width = 0 /* , Type = typeof(String) */ },
                new() { ColumnName = "Quantity", Width = 50, /* Type=typeof(int),  */ Caption = "Qty", Alignment = Alignment.MiddleCenter },
                new() { ColumnName = "Status", Width = 0 /* , Type = typeof(String) */ },
                new() { ColumnName = "DueDate", Width = 60, /* Type = typeof(DateTime),  */ Format = "dd/MM/yy", Alignment = Alignment.MiddleCenter },
                new()
                {
                    ColumnName = "Forecast.ManufacturingDate", Width = 60, /* Type = typeof(DateTime),  */ Caption = "Est Date", Format = "dd/MM/yy",
                    Alignment = Alignment.MiddleCenter
                }
            };
            new GlobalConfiguration<DynamicGridColumns>(typeof(Setout).Name).Save(setoutcolumns);


            var deliverycolumns = new DynamicGridColumns
            {
                new() { ColumnName = "Barcode", Width = 100 /* , Type = typeof(String) */ },
                new() { ColumnName = "Setout.Job.Name", Width = 200 /* , Type = typeof(String) */ },
                new() { ColumnName = "Title", Width = 0 /* , Type = typeof(String) */ },
                new() { ColumnName = "Setout.Quantity", Width = 50, /* Type=typeof(int),  */ Caption = "Qty", Alignment = Alignment.MiddleCenter },
                new() { ColumnName = "Setout.Description", Width = 0 /* , Type = typeof(String) */ },
                new()
                {
                    ColumnName = "DueDate", Width = 60, /* Type = typeof(DateTime),  */ Caption = "Due Date", Format = "dd/MM/yy",
                    Alignment = Alignment.MiddleCenter
                },
                new()
                {
                    ColumnName = "Setout.Forecast.ManufacturingDate", Width = 60, /* Type = typeof(DateTime),  */ Caption = "Est Date",
                    Format = "dd/MM/yy", Alignment = Alignment.MiddleCenter
                },
                new()
                {
                    ColumnName = "ManufacturedDate", Width = 60, /* Type = typeof(DateTime),  */ Caption = "Ready", Format = "dd/MM/yy",
                    Alignment = Alignment.MiddleCenter
                },
                new() { ColumnName = "Setout.Status", Width = 150 /* , Type = typeof(String) */ }
            };
            new GlobalConfiguration<DynamicGridColumns>(typeof(DeliveryItem).Name).Save(deliverycolumns);


            var shipmentcolumns = new DynamicGridColumns
            {
                new() { ColumnName = "Code", Width = 80, /* Type = typeof(String), */ Alignment = Alignment.MiddleCenter },
                new() { ColumnName = "Description", Width = 0 /* , Type = typeof(String) */ }
            };
            new GlobalConfiguration<DynamicGridColumns>(typeof(Shipment).Name).Save(shipmentcolumns);

            var employeecolumns = new DynamicGridColumns
            {
                new() { ColumnName = "Code", Width = 120 /* , Type = typeof(String) */ },
                new() { ColumnName = "Name", Width = 0 /* , Type = typeof(String) */ },
                new() { ColumnName = "Address.Street", Width = 0 /* , Type = typeof(String) */ },
                new() { ColumnName = "Address.City", Width = 150 /* , Type = typeof(String) */ },
                new() { ColumnName = "Type.Name", Width = 120 /* , Type = typeof(String) */ },
                new()
                {
                    ColumnName = "StartDate", Width = 60, /* Type = typeof(DateTime),  */ Caption = "Started", Format = "dd/MM/yy",
                    Alignment = Alignment.MiddleCenter
                },
                new()
                {
                    ColumnName = "FinishDate", Width = 60, /* Type = typeof(DateTime),  */ Caption = "Finished", Format = "dd/MM/yy",
                    Alignment = Alignment.MiddleCenter
                }
            };
            new GlobalConfiguration<DynamicGridColumns>(typeof(Employee).Name).Save(employeecolumns);

            var customercolumns = new DynamicGridColumns
            {
                new() { ColumnName = "Code", Width = 200 /* , Type = typeof(String) */ },
                new() { ColumnName = "Name", Width = 0 /* , Type = typeof(String) */ },
                new() { ColumnName = "Delivery.Street", Width = 0 /* , Type = typeof(String) */ },
                new() { ColumnName = "Delivery.City", Width = 150 /* , Type = typeof(String) */ }
            };
            new GlobalConfiguration<DynamicGridColumns>(typeof(Customer).Name).Save(customercolumns);

            var gpstrackercolumns = new DynamicGridColumns
            {
                new() { ColumnName = "DeviceID", Width = 200 /* , Type = typeof(String) */ },
                new() { ColumnName = "Description", Width = 0 /* , Type = typeof(String) */ },
                new()
                {
                    ColumnName = "Location.Latitude", Width = 100, /* Type = typeof(double),  */ Caption = "Latitude", Format = "F6",
                    Alignment = Alignment.MiddleCenter
                },
                new()
                {
                    ColumnName = "Location.Longitude", Width = 100, /* Type = typeof(double),  */ Caption = "Longitude", Format = "F6",
                    Alignment = Alignment.MiddleCenter
                },
                new()
                {
                    ColumnName = "Location.Timestamp", Width = 100, /* Type = typeof(DateTime),  */ Caption = "Last Update",
                    Format = "dd/MM/yy HH:mm",
                    Alignment = Alignment.MiddleCenter
                }
            };
            new GlobalConfiguration<DynamicGridColumns>(typeof(GPSTracker).Name).Save(gpstrackercolumns);
        }
        
        private class RequisitionItemLine
        {
            public Guid ID { get; private set; }
            public InvoiceLine Line { get; private set; }
            public CostCentre CostCentre { get; private set; }
            public double? Charge { get; set; }

            public RequisitionItemLine(Guid id, CostCentre costcentre, String description, double? charge)
            {
                ID = id;
                Line = new InvoiceLine() { Description = description };
                CostCentre = costcentre;
                Charge = charge;
            }
        }
        





        

        //public void InvoiceTimeSheets()
        //{
        //    TimeSheet[] times = new Client<TimeSheet>().Load(
        //        new Filter<TimeSheet>(x => x.Processed).IsEqualTo(DateTime.MinValue).And(x => x.Approved).IsNotEqualTo(DateTime.MinValue).And(x => x.InvoiceLink.ID).IsEqualTo(Guid.Empty).And(x => x.JobLink.ID).IsNotEqualTo(Guid.Empty)
        //    );
        //    List<Job> jobs = new List<Job>();
        //    foreach (var time in times)
        //    {
        //        if (!jobs.Contains(time.JobLink.ID))
        //            jobs.Add(time.JobLink.ID);
        //    }
        //    foreach (Guid jobid in jobs)
        //    {
        //        Invoice invoice = new Invoice();
        //        invoice.JobLink.ID = jobid;

        //    }
        //}
    }
}