using DesktopTools.BusinessLogics;
using DesktopTools.Enums;
using DesktopTools.Interfaces;
using DesktopTools.Models;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Windows.Forms;
using System.Xml.Linq;

namespace DepartmentPortalDesctop
{
	public partial class FormMain : Form
	{
		private readonly Dictionary<Guid, IControl> _baseControls;

		private readonly Dictionary<Guid, IControl> _controls;

		private readonly string _fileForXmlConfig = "ControlsConfig.xml";

		public FormMain()
		{
			InitializeComponent();
			_baseControls = new Dictionary<Guid, IControl>();
			_controls = new Dictionary<Guid, IControl>();

			var extensions = DesktopLoader.GetWindowDesktopExtensions();
			foreach (var extens in extensions)
			{
				ToolStripMenuItem menu = null;
				var list = extens?.GetListControlEntityList()?.ToList();
				if (list != null && list.Count > 0)
				{
					menu = new ToolStripMenuItem { Text = list[0].Title };
					for (int i = 0; i < list.Count; i++)
					{
						if (list[i].Control is IControl control)
						{
							if (_baseControls.ContainsKey(list[i].Id))
							{
								continue;
							}

							_baseControls.Add(list[i].Id, control);
							var submenu = new ToolStripMenuItem { Text = list[i].Title, Tag = list[i].Id };
							submenu.Click += (object sender, EventArgs e) =>
							{
								OpenControl(new Guid((sender as ToolStripMenuItem).Tag.ToString()));
							};
							menu.DropDownItems.Add(submenu);
						}
					}

				}
				list = extens?.GetListControlSpecialList()?.ToList();
				if (list != null && list.Count > 0)
				{
					if (menu == null)
					{
						menu = new ToolStripMenuItem { Text = list[0].Title };
					}
					else if (menu.Text != list[0].Title)
					{
						menuMain.Items.Add(menu);
						menu = new ToolStripMenuItem { Text = list[0].Title };
					}
					menu.DropDownItems.Add(new ToolStripSeparator());

					for (int i = 0; i < list.Count; i++)
					{
						if (list[i].Control is IControl control)
						{
							if (_baseControls.ContainsKey(list[i].Id))
							{
								continue;
							}

							_baseControls.Add(list[i].Id, control);
							var submenu = new ToolStripMenuItem { Text = list[i].Title, Tag = list[i].Id };
							submenu.Click += (object sender, EventArgs e) =>
							{
								OpenControl(new Guid((sender as ToolStripMenuItem).Tag.ToString()));
							};
							menu.DropDownItems.Add(submenu);
						}
					}
				}

				if (menu != null)
				{
					menuMain.Items.Add(menu);
				}
			}

			if (File.Exists(_fileForXmlConfig))
			{
				var xml = XDocument.Load(_fileForXmlConfig).Element("Controls");
				Guid? id = null;
				if (xml != null)
				{
					foreach (XElement node in xml.Elements("Control"))
					{
						var type = node.Attribute("Type").Value.ToString();
						var control = _baseControls.Values.FirstOrDefault(x => x.GetType().FullName == type);
						if (control != null)
						{
							var ctrl = control.GetInstance();
							ctrl.Open(new ControlOpenModel { OpenMode = ControlOpenMode.List, LazyLoading = true, CloseList = CloseControl });
							ctrl.LoadFromXml(node.ToString());
							_controls.Add(ctrl.ControlId, ctrl);
							dataGridViewControls.Rows.Insert(0, new object[] { ctrl.ControlId, ctrl.Title });
							id = ctrl.ControlId;
						}
					}
					if (id.HasValue)
					{
						ShowControl(id.Value);
					}
				}
			}
		}

		/// <summary>
		/// Добавление нового контрола
		/// </summary>
		/// <param name="id"></param>
		private void OpenControl(Guid id)
		{
			if (!_baseControls.ContainsKey(id))
			{
				return;
			}
			if (_baseControls[id] == null)
			{
				return;
			}

			var ctrl = _baseControls[id].GetInstance();
			if (!_controls.ContainsKey(ctrl.ControlId))
			{
				ctrl.Open(new ControlOpenModel { OpenMode = ControlOpenMode.List, CloseList = CloseControl });
				_controls.Add(ctrl.ControlId, ctrl);

				panelControl.Controls.Clear();
				panelControl.Controls.Add(ctrl as UserControl);
				dataGridViewControls.Rows.Add(new object[] { ctrl.ControlId, ctrl.Title });
				dataGridViewControls.Rows[^1].Selected = true;
			}
		}

		/// <summary>
		/// Закрытие контрола
		/// </summary>
		/// <param name="id"></param>
		private void CloseControl(Guid id)
		{
			if (!_controls.ContainsKey(id))
			{
				return;
			}
			var ctrl = _controls[id];
			if (ctrl == null)
			{
				return;
			}
			for (int i = 0; i < dataGridViewControls.Rows.Count; ++i)
			{
				if (dataGridViewControls.Rows[i].Cells[0].Value.ToString() == ctrl.ControlId.ToString())
				{
					dataGridViewControls.Rows.RemoveAt(i);
					if (i < dataGridViewControls.Rows.Count - 1)
					{
						dataGridViewControls.Rows[i].Selected = true;
						ShowControl(new Guid(dataGridViewControls.Rows[i].Cells[0].Value.ToString()));
					}
					else if (i > 0)
					{
						dataGridViewControls.Rows[i - 1].Selected = true;
						ShowControl(new Guid(dataGridViewControls.Rows[i - 1].Cells[0].Value.ToString()));
					}
					break;
				}
			}
			_controls.Remove(ctrl.ControlId);
		}

		/// <summary>
		/// Отображение контрола
		/// </summary>
		/// <param name="id"></param>
		private void ShowControl(Guid id)
		{
			if (!_controls.ContainsKey(id))
			{
				return;
			}
			var ctrl = _controls[id];
			if (ctrl == null)
			{
				return;
			}
			panelControl.Controls.Clear();
			panelControl.Controls.Add(ctrl as UserControl);
		}

		private void ButtonShowHideControlList_Click(object sender, EventArgs e)
		{
			ButtonShowHideControlList.Text = panelControls.Visible ? ">" : "<";
			panelControls.Visible = !panelControls.Visible;
		}

		private void DataGridViewControls_CellClick(object sender, DataGridViewCellEventArgs e) => ShowControl(new Guid(dataGridViewControls.Rows[e.RowIndex].Cells[0].Value.ToString()));

		private void FormMain_FormClosing(object sender, FormClosingEventArgs e)
		{
			var xml = new XElement("Controls");
			foreach (var cntrl in _controls)
			{
				xml.AddFirst(XElement.Parse(cntrl.Value.SaveToXml()));
			}
			if (File.Exists(_fileForXmlConfig))
			{
				File.Delete(_fileForXmlConfig);
			}
			xml.Save(_fileForXmlConfig);
		}
	}
}