#region Disclaimer / License

// Copyright (C) 2010, Jackie Ng
// http://trac.osgeo.org/mapguide/wiki/maestro, jumpinjackie@gmail.com
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
//

#endregion Disclaimer / License

using Maestro.Editors.Generic;
using Maestro.Shared.UI;
using OSGeo.MapGuide.MaestroAPI;
using OSGeo.MapGuide.MaestroAPI.Services;
using OSGeo.MapGuide.ObjectModels;
using OSGeo.MapGuide.ObjectModels.LayerDefinition;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Diagnostics;
using System.Windows.Forms;

namespace Maestro.Editors.LayerDefinition.Drawing
{
    [ToolboxItem(false)]
    internal partial class DrawingLayerSettingsCtrl : CollapsiblePanel, IEditorBindable
    {
        public DrawingLayerSettingsCtrl()
        {
            InitializeComponent();
            _sheets = new BindingList<OSGeo.MapGuide.ObjectModels.Common.DrawingSectionListSection>();
        }

        private IEditorService _service;
        private IDrawingLayerDefinition _dlayer;
        private readonly BindingList<OSGeo.MapGuide.ObjectModels.Common.DrawingSectionListSection> _sheets;

        public void Bind(IEditorService service)
        {
            _service = service;
            _service.RegisterCustomNotifier(this);

            var lyr = service.GetEditedResource() as ILayerDefinition;
            Debug.Assert(lyr != null);

            _dlayer = lyr.SubLayer as IDrawingLayerDefinition;
            Debug.Assert(_dlayer != null);

            TextBoxBinder.BindText(txtDrawingSource, _dlayer, nameof(_dlayer.ResourceId));
            cmbSheet.DisplayMember = "Title"; //NOXLATE
            cmbSheet.ValueMember = "Name"; //NOXLATE
            cmbSheet.DataSource = _sheets;
            PopulateSheets();
            cmbSheet_SelectedIndexChanged(this, EventArgs.Empty);
            ComboBoxBinder.BindSelectedIndexChanged(cmbSheet, nameof(cmbSheet.SelectedValue), _dlayer, nameof(_dlayer.Sheet));

            var minBinding = new Binding(nameof(txtMinScale.Text), _dlayer, nameof(_dlayer.MinScale));
            var maxBinding = new Binding(nameof(txtMaxScale.Text), _dlayer, nameof(_dlayer.MaxScale));

            minBinding.Format += (sender, ce) =>
            {
                if (ce.DesiredType != typeof(string)) return;

                ce.Value = Convert.ToDouble(ce.Value);
            };
            minBinding.Parse += (sender, ce) =>
            {
                if (ce.DesiredType != typeof(double)) return;
                double val;
                if (!double.TryParse(ce.Value.ToString(), out val))
                    return;

                ce.Value = val;
            };
            maxBinding.Format += (sender, ce) =>
            {
                if (ce.DesiredType != typeof(string)) return;

                ce.Value = Convert.ToDouble(ce.Value);
            };
            maxBinding.Parse += (sender, ce) =>
            {
                if (ce.DesiredType != typeof(double)) return;
                double val;
                if (!double.TryParse(ce.Value.ToString(), out val))
                    return;

                ce.Value = val;
            };

            TextBoxBinder.BindText(txtMinScale, minBinding);
            TextBoxBinder.BindText(txtMaxScale, maxBinding);

            //This is not the root object so no change listeners have been subscribed
            _dlayer.PropertyChanged += WeakEventHandler.Wrap<PropertyChangedEventHandler>(OnDrawingLayerPropertyChanged, (eh) => _dlayer.PropertyChanged -= eh);
        }

        private void OnDrawingLayerPropertyChanged(object sender, PropertyChangedEventArgs e) => OnResourceChanged();

        private void PopulateSheets()
        {
            _sheets.Clear();
            var drawSvc = (IDrawingService)_service.CurrentConnection.GetService((int)ServiceType.Drawing);
            var sheets = drawSvc.EnumerateDrawingSections(_dlayer.ResourceId);
            foreach (var sht in sheets.Section)
            {
                _sheets.Add(sht);
            }
        }

        private void OnResourceChanged() => this.ResourceChanged?.Invoke(this, EventArgs.Empty);

        public event EventHandler ResourceChanged;

        private void cmbSheet_SelectedIndexChanged(object sender, EventArgs e)
        {
            chkListDwfLayers.Items.Clear();

            var drawSvc = (IDrawingService)_service.CurrentConnection.GetService((int)ServiceType.Drawing);
            var layers = drawSvc.EnumerateDrawingLayers(_dlayer.ResourceId, _dlayer.Sheet);
            if (string.IsNullOrEmpty(_dlayer.LayerFilter)) //All layers
            {
                foreach (var lyr in layers)
                {
                    chkListDwfLayers.Items.Add(lyr, true);
                }
            }
            else
            {
                string[] visible = _dlayer.LayerFilter.Split(','); //NOXLATE
                foreach (var lyr in layers)
                {
                    if (Array.IndexOf<string>(visible, lyr) >= 0)
                        chkListDwfLayers.Items.Add(lyr, true);
                    else
                        chkListDwfLayers.Items.Add(lyr, false);
                }
            }
        }

        private bool IsAllLayersChecked() => chkListDwfLayers.CheckedIndices.Count == chkListDwfLayers.Items.Count;

        private string GetLayerFilter()
        {
            if (chkListDwfLayers.CheckedIndices.Count == 0)
            {
                return string.Empty;
            }
            else if (IsAllLayersChecked())
            {
                return null;
            }
            else
            {
                var list = new List<string>();
                foreach (var obj in chkListDwfLayers.CheckedItems)
                {
                    list.Add(obj.ToString());
                }
                return string.Join(",", list.ToArray()); //NOXLATE
            }
        }

        private void chkListDwfLayers_ItemCheck(object sender, ItemCheckEventArgs e) => _dlayer.LayerFilter = GetLayerFilter();

        private void lnkCheckAll_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e)
        {
            for (int i = 0; i < chkListDwfLayers.Items.Count; i++)
            {
                chkListDwfLayers.SetItemChecked(i, true);
            }
            Debug.Assert(chkListDwfLayers.CheckedIndices.Count == chkListDwfLayers.Items.Count);
            _dlayer.LayerFilter = GetLayerFilter();
        }

        private void btnGoToDrawingSource_Click(object sender, EventArgs e) => _service.OpenResource(txtDrawingSource.Text);

        private void btnBrowse_Click(object sender, EventArgs e)
        {
            using (var picker = new ResourcePicker(_service.CurrentConnection,
                                                   ResourceTypes.DrawingSource.ToString(),
                                                   ResourcePickerMode.OpenResource))
            {
                if (picker.ShowDialog() == DialogResult.OK)
                {
                    if (!txtDrawingSource.Text.Equals(picker.ResourceID))
                    {
                        txtDrawingSource.Text = picker.ResourceID;
                        _dlayer.LayerFilter = string.Empty;
                        PopulateSheets();
                        _dlayer.Sheet = _sheets[0].Name;
                        cmbSheet_SelectedIndexChanged(this, EventArgs.Empty);
                    }
                }
            }
        }
    }
}