using System;
using System.Collections.Generic;
using System.IO;
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.Core;
using InABox.DynamicGrid;
using InABox.Wpf;
using java.text;
using Syncfusion.Windows.Controls;

namespace PRSDesktop
{
    public partial class MeetingPanel : UserControl, IPanel<Meeting>
    {
        private DynamicGrid<MeetingItem> MeetingItemGrid = new DynamicDataGrid<MeetingItem>();
        
        public MeetingPanel()
        {
            InitializeComponent();
            MeetingItemGrid.OnEditorValueChanged += MeetingItemGrid_OnEditorValueChanged;
            MeetingItemGrid.OnCustomiseEditor += MeetingItemGrid_OnCustomiseEditor;
        }

        #region IPanel
        
        public void Setup()
        {
            foreach (var column in MeetingModel.Columns.Items)
                MeetingGrid.AddHiddenColumn(column.Property);
            MeetingGrid.Refresh(true, false);
            MeetingAssignments.Refresh(true, false);            
            MeetingItemDocuments.Refresh(true, false);
            MeetingItemTasks.Refresh(true, false);
            MeetingTasks.Refresh(true, false);
            MeetingDocuments.Refresh(true, false);
        }

        public void Shutdown()
        {
            
        }

        public void Refresh()
        {
            MeetingGrid.Refresh(false, true);

        }

        public string SectionName => "Meetings";
        
        public DataModel DataModel(Selection selection)
        {
            return new AutoDataModel<Meeting>(null);
        }

        public event DataModelUpdateEvent? OnUpdateDataModel;
        
        public bool IsReady { get; set; }
        
        public void CreateToolbarButtons(IPanelHost host)
        {
            
        }

        public Dictionary<string, object[]> Selected()
        {
            return new Dictionary<string, object[]>();
        }

        public void Heartbeat(TimeSpan time)
        {
            
        }
        
        #endregion

        private bool _meetingSelected = false;

        private TimeSpan _meetingstart = TimeSpan.Zero;
        private TimeSpan _meetingduration = TimeSpan.Zero;
        private TimeSpan _meetingfinish = TimeSpan.Zero;
        private bool _meetingitemSelected = false;
        
        private void Meetings_OnSelectItem(object sender, DynamicGridSelectionEventArgs e)
        {
            CoreRow? row = e.Rows?.FirstOrDefault();

            _meetingSelected = row != null;
            
            var meeting = row?.ToObject<Meeting>() ?? new Meeting();
            _meetingstart = meeting.Time.Start;
            _meetingduration = meeting.Time.Duration;
            _meetingfinish = meeting.Time.Finish;
            
            MeetingGrid.InitialiseEditorForm(MeetingDetailsForm, new Meeting[] { meeting });

            _meetingitemSelected = false;
            MeetingItemGrid.InitialiseEditorForm(MeetingItemDetailsForm, new MeetingItem[] { new MeetingItem() });

            var model = new MeetingModel(row);
            
            MeetingItems.Model = model;
            MeetingItems.Refresh();
            
            MeetingAssignments.Model = model;
            MeetingAssignments.Refresh(false,true);

            MeetingItemTasks.MeetingID = meeting.ID;

            MeetingTasks.Model = model;
            MeetingTasks.Refresh(false, true);
            
            MeetingDocuments.Model = model;
            MeetingDocuments.Refresh(false, true);
            
        }
        
        private void MeetingDetailsForm_OnBeforeLoad(IDynamicEditorForm form)
        {
            form.ReadOnly = !_meetingSelected;
        }
        
        private void Meetings_OnCustomiseEditor(IDynamicEditorForm sender, Meeting[]? items, DynamicGridColumn column, BaseEditor editor)
        {
            if (String.Equals(column.ColumnName, "Time"))
                editor.Editable = sender.ReadOnly ? Editable.Disabled : Editable.Enabled;
        }
        
        private Dictionary<string, object?> Meetings_OnEditorValueChanged(object sender, string name, object value)
        {
            var item = MeetingDetailsForm.Items.FirstOrDefault();
            if (item is Meeting meeting)
            {
                if (String.Equals(name, "Time.Start") && TimeSpan.Equals(meeting.Time.Start, _meetingstart))
                    return new Dictionary<string, object?>();
                if (String.Equals(name, "Time.Duration") && TimeSpan.Equals(meeting.Time.Duration, _meetingduration))
                    return new Dictionary<string, object?>();
                if (String.Equals(name, "Time.Finish") && TimeSpan.Equals(meeting.Time.Finish, _meetingfinish))
                    return new Dictionary<string, object?>();
                
                new Client<Meeting>().Save(meeting, "");
                var row = MeetingGrid.SelectedRows[0];
                MeetingGrid.Data.LoadRow(row, meeting);
                MeetingGrid.InvalidateRow(row);
                
                _meetingstart = meeting.Time.Start;
                _meetingduration = meeting.Time.Duration;
                _meetingfinish = meeting.Time.Finish;
                
            }
            return new Dictionary<string, object?>();
        }
        
        private void MeetingItemGrid_OnSelectItem(DynamicTreeNode node)
        {

            _meetingitemSelected = node != null;

            MeetingItemDocuments.MeetingItemID = node != null ? node.ID : Guid.Empty;
            MeetingItemDocuments.Refresh(false, true);
            
            MeetingItemTasks.MeetingItemID = node != null ? node.ID : Guid.Empty;
            MeetingItemTasks.Refresh(false, true);
            
            var row = node != null
                ? MeetingItems.Data?.Rows.FirstOrDefault(r => r.Get<MeetingItem, Guid>(x => x.ID) == node.ID)
                : null;
            
            var meetingitem = row != null ? row.ToObject<MeetingItem>() : new MeetingItem();
            
            MeetingItemGrid.InitialiseEditorForm(MeetingItemDetailsForm, new MeetingItem[] { meetingitem });
        }
        
        private void MeetingItemDetailsForm_OnBeforeLoad(IDynamicEditorForm form)
        {
            form.ReadOnly = !_meetingSelected || !_meetingitemSelected;
        }
        
        private void MeetingItemGrid_OnCustomiseEditor(IDynamicEditorForm sender, MeetingItem[] items, DynamicGridColumn column, BaseEditor editor)
        {

        }
        
        private Dictionary<string, object?> MeetingItemGrid_OnEditorValueChanged(object sender, string name, object value)
        {
            var item = MeetingItemDetailsForm.Items.FirstOrDefault();
            if(item is MeetingItem meetingitem)
            {
                new Client<MeetingItem>().Save(meetingitem, "");
                var row = MeetingItems.Data.Rows.FirstOrDefault(r => r.Get<MeetingItem, Guid>(c => c.ID) == meetingitem.ID);
                MeetingItems.Data.LoadRow(row, meetingitem);
                var node = MeetingItems.Nodes[meetingitem.ID];
                node.Description = meetingitem.Title;

            }
            return new Dictionary<string, object?>();
        }
        
        private void MeetingItemTasks_OnOnChanged(IDynamicGrid sender)
        {
            MeetingTasks.Refresh(false, true);
        }


        #region MeetingItemDocuments
        
        private void MeetingItemDocuments_OnChanged(IDynamicGrid sender)
        {
            MeetingDocuments.Refresh(false, true);
        }
        
        private void MeetingDocumentPreview_OnSizeChanged(object sender, SizeChangedEventArgs e)
        {
        }

        private void MeetingDocuments_OnOnSelectItem(object sender, DynamicGridSelectionEventArgs e)
        {

            var doc = e.Rows?.FirstOrDefault()?.ToObject<MeetingItemDocument>();
            if (doc == null)
            {
                DocumentSplitPanel.Detail = null;
                return;
            }
            
            IDocumentEditor editor = null;

            var extension = Path.GetExtension(doc.DocumentLink.FileName).ToLower();

            if (extension.Equals(".pdf"))
            {
                var pdf = new PDFEditorControl();
                //pdf.PrintAllowed = PrintAllowed;
                pdf.SaveAllowed = false;
                pdf.ButtonsVisible = false;
                pdf.Watermark = "";
                editor = pdf;
            }
            else if (extension.Equals(".png") || extension.Equals(".bmp") || extension.Equals(".jpg") || extension.Equals(".jpeg"))
            {
                editor = new ImageEditorControl();
            }
            else if (extension.Equals(".xls") || extension.Equals(".xlsx") )
            {
                editor = new SpreadsheetEditorControl();
            }
            else if (extension.Equals(".doc") || extension.Equals(".docx")  || extension.Equals(".rtf")  || extension.Equals(".html")  || extension.Equals(".htm")  || extension.Equals(".txt"))
            {
                editor = new RTFEditorControl();
            }

            if (editor != null)
            {
                DocumentSplitPanel.Detail = editor as FrameworkElement;
                editor.Document = doc;
            }
            else
            {
                DocumentSplitPanel.Detail = null;
            }

        }
        
        #endregion



    }
}