using DesktopTools.BaseControls;
using DesktopTools.Enums;
using DesktopTools.Helpers;
using DesktopTools.Interfaces;
using DesktopTools.Models;
using ModuleTools.Attributes;
using ModuleTools.BindingModels;
using ModuleTools.BusinessLogics;
using ModuleTools.Enums;
using ModuleTools.Extensions;
using ModuleTools.ViewModels;
using System;
using System.Linq;
using System.Reflection;
using System.Windows.Forms;
using System.Xml.Linq;

namespace DesktopTools.Controls
{
	public partial class GenericControlEntityElement<G, S, L, E, BL> : MainControlViewEntityElement, IControlViewEntityElement
		where G : GetBindingModel, new()
		where S : SetBindingModel, new()
		where L : ListViewModel<E>
		where E : ElementViewModel
		where BL : GenericBusinessLogic<G, S, L, E>
	{
		/// <summary>
		/// Объект бизнес-логики для получения данных
		/// </summary>
		private readonly BL _businessLogic;

		/// <summary>
		/// Методы для реализации в generic-контроле
		/// </summary>
		protected IGenericControlEntityElement _genericControlViewEntityElement;

		/// <summary>
		/// Признак налиичия изменений
		/// </summary>
		private bool _haveChages = false;

		/// <summary>
		/// Ширина контрола по умолчанию
		/// </summary>
		private readonly int _defaultControlWidth = 350;

		private E _element = null;

		/// <summary>
		/// Событие, вызываемое при закрытии контрола
		/// </summary>
		private event Action<Guid> CloseElementEvent;

		/// <summary>
		/// События установки одинаковой ширины для заголовков контролов
		/// </summary>
		private event Action<int> SetTitleWidth;

		/// <summary>
		/// Событие установки значения
		/// </summary>
		private event Action<object> SetValues;

		/// <summary>
		/// Событие сброса значения в исходное состояние
		/// </summary>
		private event Action DropValues;

		/// <summary>
		/// Событие проверки заполненности контрола
		/// </summary>
		private event Func<bool> CheckValues;

		/// <summary>
		/// Событие получения значения из контрола
		/// </summary>
		private event Action<object> GetValues;

		private E Element
		{
			get { return _element; }
			set
			{
				try
				{
					_element = value;
					SetValues?.Invoke(_element);
					if (tabControl.Visible)
					{
						foreach (TabPage page in tabControl.TabPages)
						{
							if (page.Name == tabPageMain.Name)
							{
								continue;
							}
							if (page.Controls[0] is IControlChildEntity cntrl)
							{
								cntrl.ParentId = _element.Id;
								cntrl.Open(new ControlOpenModel { OpenMode = ControlOpenMode.Child });
							}
						}
					}
					_haveChages = false;
				}
				catch (Exception ex)
				{
					DialogHelper.MessageException(ex.Message, $"{Title}. Ошибка при установки значений");
				}
			}
		}

		public GenericControlEntityElement()
		{
			InitializeComponent();
			InitEvents();
			_businessLogic = DependencyManager.Instance.Resolve<BL>();
			_controlViewEntityElement = this;
		}

		public void OpenControl(ControlOpenModel model)
		{
			if (model.CloseElement != null)
			{
				CloseElementEvent += model.CloseElement;
			}
			if (panelContainer.Controls.Count == 0)
			{
				try
				{
					Configurate();
				}
				catch (Exception ex)
				{
					DialogHelper.MessageException(ex.Message, $"{Title}. Ошибка при конфигурации");
				}
			}
			if (model.ElementId.HasValue)
			{
				Element = _businessLogic.GetElement(new G { Id = model.ElementId });
				if (Element == null)
				{
					DialogHelper.MessageException(_businessLogic.Errors, $"{Title}. Ошибки при получении элемента");
				}
			}
			Dock = DockStyle.Fill;
		}

		public IControl GetInstanceControl() => _genericControlViewEntityElement?.GetInstanceGenericControl();

		public string SaveControlToXml() => new XElement("Control",
				new XAttribute("Type", GetType().FullName),
				new XAttribute("ControlId", ControlId),
				new XAttribute("Title", Title)).ToString();

		public void LoadControlFromXml(string xml)
		{
			var control = XElement.Parse(xml).Element("Control");
			ControlId = new Guid(control.Attribute("ControlId").Value.ToString());
			Title = control.Attribute("Title").Value.ToString();
		}

		private void InitEvents()
		{
			toolStripButtonSave.Click += (object sender, EventArgs e) => { Save(); };
			toolStripButtonReload.Click += (object sender, EventArgs e) =>
			{
				if (DialogHelper.MessageQuestion("Отменить все внесенные изменения?") == DialogResult.Yes)
				{
					try
					{
						DropValues?.Invoke();
					}
					catch (Exception ex)
					{
						DialogHelper.MessageException(ex.Message, $"{Title}. Ошибка при сбросе значений");
					}
				}
			};
			toolStripButtonClose.Click += (object sender, EventArgs e) => {
				if (_haveChages && DialogHelper.MessageQuestion("Имеется несохраненные данные, вы действительно хотите закрыть элемент?", "Закрытие элемента") == DialogResult.Yes)
				{
					if (Save())
					{
						return;
					}
				}
				CloseElementEvent?.Invoke(ControlId);
				Dispose();
			};
		}

		private void Configurate()
		{
			var attributeClass = typeof(E).GetCustomAttribute<ViewModelControlElementClassAttribute>();
			if (attributeClass == null)
			{
				return;
			}
			tabControl.Visible = attributeClass.HaveDependenceEntities;
			panelContainer.Visible = !attributeClass.HaveDependenceEntities;
			Width = attributeClass.Width != 0 ? attributeClass.Width : _defaultControlWidth;

			int positionY = 5;
			int positionX = 5;
			int interval = 15;

			int titleWidth = 0;

			foreach (var property in typeof(E).GetProperties())
			{
				var attribute = property.GetCustomAttribute<ViewModelControlElementPropertyAttribute>();
				if (attribute != null)
				{
					AbstractBaseControl control = null;
					switch (attribute.ControlType)
					{
						case ControlType.ControlString:
							control = new BaseControlString(property.Name, attribute.MustHaveValue, attribute.ReadOnly, attribute.MaxLength);
							break;
						case ControlType.ControlText:
							control = new BaseControlText(property.Name, attribute.MustHaveValue, attribute.ReadOnly, attribute.MaxLength, attribute.Height);
							break;
						case ControlType.ControlInt:
							control = new BaseControlInt(property.Name, attribute.MustHaveValue, attribute.ReadOnly, attribute.MinValue, attribute.MaxValue);
							break;
						case ControlType.ControlDecimal:
							control = new BaseControlDecimal(property.Name, attribute.MustHaveValue, attribute.ReadOnly, attribute.MinValue,
								attribute.MaxValue, attribute.DecimalPlaces);
							break;
						case ControlType.ControlBool:
							control = new BaseControlBool(property.Name, attribute.MustHaveValue, attribute.ReadOnly);
							break;
						case ControlType.ControlDateTime:
							control = new BaseControlDateTime(property.Name, attribute.MustHaveValue, attribute.ReadOnly, attribute.MinDate,
								attribute.MaxDate, attribute.CustomDateFormat);
							break;
						case ControlType.ControlImage:
							control = new BaseControlImage(property.Name, attribute.MustHaveValue, attribute.ReadOnly, attribute.Width, attribute.Height);
							break;
						case ControlType.ControlEnum:
							control = new BaseControlEnum(property.Name, attribute.MustHaveValue, attribute.ReadOnly, property.PropertyType);
							break;
						case ControlType.ControlGuid:
							if (attribute.ControlTypeObject.IsNotEmpty() && Type.GetType(attribute.ControlTypeObject) != null)
							{
								control = new BaseControlGuid(property.Name, attribute.MustHaveValue, attribute.ReadOnly,
									DependencyManager.Instance.Resolve(Type.GetType(attribute.ControlTypeObject)) as IControlEntitySelectable, 
									property.Name == ParentPropertyName ? ParentId : null);
							}
							break;
					}
					if (control == null)
					{
						continue;
					}

					var widthTitle = control.SetTitle(attribute.DisplayName);
					if (widthTitle > titleWidth)
					{
						titleWidth = widthTitle;
					}

					control.OnValueChangeEvent += () => { _haveChages = true; };
					SetValues += control.SetValue;
					DropValues += control.DropValue;
					CheckValues += control.CheckValue;
					SetTitleWidth += control.SetTitleWidth;
					GetValues += control.GetValue;

					control.Location = new System.Drawing.Point(positionX, positionY);
					control.Width = Width - positionX * 2 - (tabControl.Visible ? 10 : 0);
					control.Anchor = AnchorStyles.Top | AnchorStyles.Left;
					if (panelContainer.Visible)
					{
						control.Anchor |= AnchorStyles.Right;
					}
					positionY += control.Height + interval;

					if (panelContainer.Visible)
					{
						panelContainer.Controls.Add(control);
					}
					if (tabControl.Visible)
					{
						tabPageMain.Controls.Add(control);
					}
				}
			}

			SetTitleWidth(titleWidth);
			Height = attributeClass.Height != 0 ? attributeClass.Height : positionY;

			if (attributeClass.HaveDependenceEntities)
			{
				var attrDependences = typeof(E).GetCustomAttributes<ViewModelControlElementDependenceEntityAttribute>();
				if (attrDependences != null)
				{
					foreach (var attr in attrDependences)
					{
						if (DependencyManager.Instance.Resolve(Type.GetType(attr.ControlTypeObject)) is IControlChildEntity control)
						{
							var cntrl = control.GetInstance() as IControlChildEntity;
							cntrl.ParentPropertyName = attr.ParentPropertyName;
							//cntrl.Open(null);
							var tabPage = new TabPage
							{
								Location = new System.Drawing.Point(4, 24),
								Name = "tabPage",
								Padding = new Padding(3),
								Size = new System.Drawing.Size(122, 99),
								TabIndex = 0,
								Text = attr.Title,
								UseVisualStyleBackColor = true
							};
							tabPage.Controls.Add(cntrl as UserControl);

							tabControl.TabPages.Add(tabPage);
							if (attr.IsActive)
							{
								tabPage.Select();
							}
						}
					}
				}
			}
		}

		private bool Save()
		{
			if (CheckValues.GetInvocationList().Select(x => (bool)x.DynamicInvoke()).ToList().Any(x => !x))
			{
				return false;
			}
			var model = Element == null ? new S() : Mapper.MapToClass<E, S>(Element, true);
			try
			{
				GetValues(model);
			}
			catch (Exception ex)
			{
				DialogHelper.MessageException(ex.Message, "Ошибка при получении значений");
			}

			if (model != null)
			{
				if (Element == null)
				{
					Element = _businessLogic.Create(model);
				}
				else
				{
					Element = _businessLogic.Update(model);
				}

				if (Element == null)
				{
					DialogHelper.MessageException(_businessLogic.Errors, "Ошибки при сохранении элемента");
				}

				_haveChages = false;
				DialogHelper.MessageInformation("Сохранение прошло успешно", "Сообщение");
				return true;
			}

			return false;
		}
	}
}