using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Diagnostics;
using System.Linq;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Input;
using System.Windows.Media.Imaging;
using Comal.Classes;
using InABox.Clients;
using InABox.Configuration;
using InABox.Core;
using InABox.DynamicGrid;
using InABox.WPF;

namespace PRSDesktop
{
    
    
    public class EquipmentPanelSettings : BaseObject, IGlobalConfigurationSettings
    {
        public bool CustomerFilterEnabled { get; set; }

        public EquipmentPanelSettings()
        {
            CustomerFilterEnabled = false;
        }
    }
    
    /// <summary>
    ///     Interaction logic for EquipmentPanel.xaml
    /// </summary>
    public partial class EquipmentPanel : UserControl, IPanel<Equipment>
    {

        private EquipmentPanelSettings _settings = null;
        
        private String _searchfilter = "";
        
        public ObservableCollection<Tuple<string, Guid, BitmapImage>> GroupList { get; private set; }

        public bool IsReady { get; set; }

        private String _customercode = "";
        private List<Tuple<Guid, String, String>> _customers;

        public EquipmentPanel()
        {
            GroupList = new ObservableCollection<Tuple<string, Guid, BitmapImage>>();
            
            InitializeComponent();
        }
        
        public Type DataType()
        {
            return typeof(Equipment);
        }


        public event DataModelUpdateEvent OnUpdateDataModel;

        public Dictionary<string, object[]> Selected()
        {
            return new Dictionary<string, object[]> { { typeof(Equipment).EntityName(), _Equipment.SelectedRows } };
        }

        public void Setup()
        {
            
            _Equipment.CustomerID = Guid.Empty;
            _Equipment.GroupID = CoreUtils.FullGuid;
            
            _settings = new GlobalConfiguration<EquipmentPanelSettings>().Load();
            ReconfigurePanel();
            
            _Equipment.Refresh(true, false);
            
            GroupList.Add(new Tuple<string, Guid, BitmapImage>("All Items", CoreUtils.FullGuid, PRSDesktop.Resources.edit.AsBitmapImage()));
            var groups = new Client<EquipmentGroup>().Query(
                null,
                new Columns<EquipmentGroup>(x=>x.ID)
                    .Add(x=>x.Description)
                    .Add(x=>x.Thumbnail.ID),
                new SortOrder<EquipmentGroup>(x => x.Code)
            );
                
            var ids = groups.ExtractValues<EquipmentGroup, Guid>(c => c.Thumbnail.ID).Distinct().Where(x => x != Guid.Empty).ToArray();
            var Images = ids.Any()
                ? new Client<Document>().Load(new Filter<Document>(x=>x.ID).InList(ids))
                : new Document[] { };
            
            foreach (var row in groups.Rows)
            {
                var image = Images.FirstOrDefault(x => x.ID.Equals(row.Get<EquipmentGroup,Guid>(c=>c.Thumbnail.ID)));
                BitmapImage img =  (image != null && image.Data != null && image.Data.Length > 0)
                    ? ImageUtils.LoadImage(image.Data)
                    : PRSDesktop.Resources.specifications.AsBitmapImage();

                GroupList.Add(
                    new Tuple<string, Guid, BitmapImage>(
                        row.Get<EquipmentGroup,String>(c=>c.Description), 
                        row.Get<EquipmentGroup,Guid>(c=>c.ID), 
                        img
                    )
                );
            }
            
            Groups.Visibility = groups.Rows.Any() ? Visibility.Visible : Visibility.Collapsed;
            Groups.ItemsSource = GroupList;
            Groups.SelectedIndex = 0;
        }

        public void Shutdown()
        {
        }

        public void CreateToolbarButtons(IPanelHost host)
        {
            host.CreateSetupAction(new PanelAction() { Caption = "Equipment Settings", Image = PRSDesktop.Resources.specifications, OnExecute = EquipmentSettingsClick });
        }

        private void EquipmentSettingsClick(PanelAction obj)
        {
            var pages = new DynamicEditorPages();
            var buttons = new DynamicEditorButtons();
            buttons.Add(
                "",
                PRSDesktop.Resources.help.AsBitmapImage(),
                _settings,
                (f, i) =>
                {
                    Process.Start(new ProcessStartInfo("https://prsdigital.com.au/wiki/index.php/" + typeof(Equipment).Name.SplitCamelCase().Replace(" ", "_"))
                        { UseShellExecute = true });
                }
            );
            var propertyEditor = new DynamicEditorForm(typeof(EquipmentPanelSettings), pages, buttons);

            propertyEditor.Items = new BaseObject[] { _settings };

            if (propertyEditor.ShowDialog() == true)
            {
                new GlobalConfiguration<EquipmentPanelSettings>().Save(_settings);
                ReconfigurePanel();
            }

        }

        private void ReconfigurePanel()
        {
            CustomerLabel.Visibility = _settings.CustomerFilterEnabled ? Visibility.Visible : Visibility.Collapsed;
            Customer.Visibility = _settings.CustomerFilterEnabled ? Visibility.Visible : Visibility.Collapsed;
            CustomerSearch.Visibility = _settings.CustomerFilterEnabled ? Visibility.Visible : Visibility.Collapsed;
            CustomerName.Visibility = _settings.CustomerFilterEnabled ? Visibility.Visible : Visibility.Collapsed;
            
            if (!_settings.CustomerFilterEnabled)
            {
                _Equipment.CustomerID = CoreUtils.FullGuid;
                _customercode = "";
                Customer.Text = "";
                CustomerName.Text = "";
            }
            else if (_Equipment.CustomerID == CoreUtils.FullGuid)
                    _Equipment.CustomerID = Guid.Empty;
            
            if (IsReady)
                _Equipment.Refresh(false,true);
        }


        public void Refresh()
        {
            _Equipment.Refresh(false, true);
        }

        public string SectionName => "Equipment";

        public DataModel DataModel(Selection selection)
        {
            var ids = _Equipment?.ExtractValues(x => x.ID, selection)?.ToArray() ?? new Guid[] { };
            return new BaseDataModel<Equipment>(new Filter<Equipment>(x => x.ID).InList(ids));
        }

        public void Heartbeat(TimeSpan time)
        {
        }
        
        
        private bool _Equipment_OnFilterRecord(CoreRow row)
        {
            if (!String.IsNullOrWhiteSpace(_searchfilter))
            {
                for (int i=0; i<row.Table.Columns.Count; i++)
                {
                    if ((row.Table.Columns[i].DataType == typeof(String)))
                    {
                        string value = row.Values[i] as string;
                        if (!String.IsNullOrEmpty(value) && value.ToUpper().Contains(_searchfilter.ToUpper()))
                            return true;
                    }
                }

                return false;
            }
            
            return true;

        }

        private void Groups_SelectionChanged(object sender, SelectionChangedEventArgs e)
        {
            var sCur = _Equipment.GroupID;
            if (e.AddedItems.Count == 0 || Groups.SelectedIndex == 0)
            {
                _Equipment.GroupID = CoreUtils.FullGuid;
            }
            else
            {
                var selected = (Tuple<string, Guid, BitmapImage>)e.AddedItems[0];
                _Equipment.GroupID = selected.Item2;
            }

            if (sCur != _Equipment.GroupID)
                _Equipment.Refresh(false, true);
        }
        
        private void Search_OnTextChanged(object sender, TextChangedEventArgs e)
        {
            if (String.IsNullOrEmpty(Search.Text)  && !String.Equals(Search.Text, _searchfilter))
            {
                _searchfilter = "";
                _Equipment.Refresh(false, false);
            }
        }

        private void Search_OnKeyUp(object sender, KeyEventArgs e)
        {
            if (new Key[] { Key.Enter, Key.Return }.Contains(e.Key) && !String.Equals(Search.Text, _searchfilter))
            {
                _searchfilter = Search.Text;
                _Equipment.Refresh(false, false);
            }
        }

        private void CheckCustomerCache()
        {
            if (_customers == null)
            {
                _customers = new Client<Customer>().Query(
                    null,
                    new Columns<Customer>(x => x.ID).Add(x => x.Code).Add(x => x.Name),
                    new SortOrder<Customer>(x => x.Name)
                ).ToTuples<Customer,Guid,String,String>(x =>x.ID,x=>x.Code,x=>x.Name).ToList();
            }
        }
        
        private void DoSearchCustomers()
        {
            var dlg = new MultiSelectDialog<Customer>(null, new Columns<Customer>(x => x.ID).Add(x => x.Code).Add(x => x.Name), false);
            if (dlg.ShowDialog("Code",Customer.Text))
            {
                var customer = dlg.Items().First();
                _customercode = customer.Code;
                Customer.Text = customer.Code;
                CustomerName.Text = customer.Name;
                _Equipment.CustomerID = customer.ID;
            }
            else
            {
                _customercode = "";
                Customer.Text = "";
                CustomerName.Text = "";
                _Equipment.CustomerID = Guid.Empty;
            }

            _Equipment.Refresh(false, true);
        }
        
        private void CustomerSearch_OnClick(object sender, RoutedEventArgs e)
        {
            DoSearchCustomers();
        }

        
        private void Customer_OnKeyUp(object sender, KeyEventArgs e)
        {
            if (new Key[] { Key.Enter, Key.Return }.Contains(e.Key))
            {

                if (!String.Equals(Customer.Text, _customercode))
                {
                    CheckCustomerCache();
                    var lookup = _customers.FirstOrDefault(x => String.Equals(x.Item2, Customer.Text));
                    if (lookup != null)
                    {
                        _customercode = lookup.Item2;
                        CustomerName.Text = lookup.Item3;
                        _Equipment.CustomerID = lookup.Item1;
                        _Equipment.Refresh(false, true);
                    }
                    else
                        DoSearchCustomers();
                }
            }
        }

        private void Customer_OnTextChanged(object sender, TextChangedEventArgs e)
        {
            if (String.IsNullOrEmpty(Customer.Text)  && !String.Equals(Customer.Text, _customercode))
            {
                _Equipment.CustomerID = Guid.Empty;
                _customercode = "";
                CustomerName.Text = "";
                _Equipment.Refresh(false, true);
            }
        }
    }
}