using PluginsConventionLibrary;
using System.Reflection;

namespace LibraryByPlugins
{
	public partial class FormMain : Form
	{
		private readonly Dictionary<string, IPluginsConvention> _plugins;
		private string _selectedPlugin;
		public FormMain()
		{
			InitializeComponent();
			_plugins = new();
			LoadPlugins();
			_selectedPlugin = string.Empty;
		}

		private void LoadPlugins()
		{
			List<IPluginsConvention> pluginsList = GetPlugins();

			foreach (var plugin in pluginsList)
			{
				_plugins[plugin.PluginName] = plugin;
				CreateMenuItem(plugin.PluginName);
			}
		}
		private List<IPluginsConvention> GetPlugins()
		{
			string currentDir = Environment.CurrentDirectory;
			string pluginsDir = Directory.GetParent(currentDir).Parent.Parent.Parent.FullName + "\\Plugins";
			string[] dllFiles = Directory.GetFiles(
				pluginsDir,
				"*.dll",
				SearchOption.AllDirectories
			);
			List<IPluginsConvention> plugins = new();
			foreach (string dllFile in dllFiles)
			{
				try
				{
					Assembly assembly = Assembly.LoadFrom(dllFile);
					Type[] types = assembly.GetTypes();
					foreach (Type type in types)
					{
						if (typeof(IPluginsConvention).IsAssignableFrom(type) && !type.IsInterface)
						{
							if (Activator.CreateInstance(type) is IPluginsConvention plugin)
							{
								plugins.Add(plugin);
							}
						}
					}
				}
				catch (Exception ex)
				{
					MessageBox.Show(
						ex.Message
					);
				}
			}
			return plugins;
		}
		private void CreateMenuItem(string pluginName)
		{
			ToolStripMenuItem menuItem = new ToolStripMenuItem(pluginName);
			menuItem.Click += (object? sender, EventArgs a) =>
			{
				_selectedPlugin = pluginName;
				IPluginsConvention plugin = _plugins[pluginName];
				UserControl userControl = plugin.GetControl;
				if (userControl != null)
				{
					panelControl.Controls.Clear();
					plugin.ReloadData();
					userControl.Dock = DockStyle.Fill;
					panelControl.Controls.Add(userControl);
				}
			};
			ControlsStripMenuItem.DropDownItems.Add(menuItem);
		}
		private void FormMain_KeyDown(object sender, KeyEventArgs e)
		{
			if (string.IsNullOrEmpty(_selectedPlugin) ||
			!_plugins.ContainsKey(_selectedPlugin))
			{
				return;
			}
			if (!e.Control)
			{
				return;
			}
			switch (e.KeyCode)
			{
				case Keys.I:
					ShowThesaurus();
					break;
				case Keys.A:
					AddNewElement();
					break;
				case Keys.U:
					UpdateElement();
					break;
				case Keys.D:
					DeleteElement();
					break;
				case Keys.S:
					CreateSimpleDoc();
					break;
				case Keys.T:
					CreateTableDoc();
					break;
				case Keys.C:
					CreateChartDoc();
					break;
			}
		}
		private void ShowThesaurus()
		{
			_plugins[_selectedPlugin].GetThesaurus()?.Show();
		}
		private void AddNewElement()
		{
			var form = _plugins[_selectedPlugin].GetForm(null);
			if (form != null && form.ShowDialog() == DialogResult.OK)
			{
				_plugins[_selectedPlugin].ReloadData();
			}
		}
		private void UpdateElement()
		{
			var element = _plugins[_selectedPlugin].GetElement;
			if (element == null)
			{
				MessageBox.Show("Не выбран элемент для обновления",
					"Ошибка",
				MessageBoxButtons.OK, MessageBoxIcon.Error);
				return;
			}
			var form = _plugins[_selectedPlugin].GetForm(element);
			if (form != null && form.ShowDialog() == DialogResult.OK)
			{
				_plugins[_selectedPlugin].ReloadData();
			}
		}
		private void DeleteElement()
		{
			if (MessageBox.Show("Удалить выбранный элемент?",
				"Удаление",
			MessageBoxButtons.YesNo, MessageBoxIcon.Question) != DialogResult.Yes)
			{
				return;
			}
			var element = _plugins[_selectedPlugin].GetElement;
			if (element == null)
			{
				MessageBox.Show("Не выбран элемент для удаления",
					"Ошибка",
				MessageBoxButtons.OK, MessageBoxIcon.Error);
				return;
			}
			if (_plugins[_selectedPlugin].DeleteElement(element))
			{
				_plugins[_selectedPlugin].ReloadData();
			}
		}
		private void CreateSimpleDoc()
		{
			SaveFileDialog saveFileDialog = new()
			{
				Filter = "PDF Files|*.pdf"
			};
			if (saveFileDialog.ShowDialog() == DialogResult.OK)
			{
				_plugins[_selectedPlugin].CreateSimpleDocument(new PluginsConventionSaveDocument() { FileName = saveFileDialog.FileName });

			}
		}
		private void CreateTableDoc()
		{
			SaveFileDialog saveFileDialog = new()
			{
				Filter = "Excel Files|*.xlsx"
			};
			if (saveFileDialog.ShowDialog() == DialogResult.OK)
			{
				_plugins[_selectedPlugin].CreateTableDocument(new PluginsConventionSaveDocument() { FileName = saveFileDialog.FileName });

			}
		}
		private void CreateChartDoc()
		{
			SaveFileDialog saveFileDialog = new()
			{
				Filter = "Word Files|*.docx"
			};
			if (saveFileDialog.ShowDialog() == DialogResult.OK)
			{
				_plugins[_selectedPlugin].CreateChartDocument(new PluginsConventionSaveDocument() { FileName = saveFileDialog.FileName });
			}
		}
		private void ThesaurusToolStripMenuItem_Click(object sender,
		EventArgs e) => ShowThesaurus();
		private void AddElementToolStripMenuItem_Click(object sender,
		EventArgs e) => AddNewElement();
		private void UpdElementToolStripMenuItem_Click(object sender,
		EventArgs e) => UpdateElement();
		private void DelElementToolStripMenuItem_Click(object sender,
		EventArgs e) => DeleteElement();
		private void SimpleDocToolStripMenuItem_Click(object sender,
		EventArgs e) => CreateSimpleDoc();
		private void TableDocToolStripMenuItem_Click(object sender, EventArgs
		e) => CreateTableDoc();
		private void ChartDocToolStripMenuItem_Click(object sender, EventArgs
		e) => CreateChartDoc();
		private void FormMain_Load(object sender, EventArgs e)
		{

		}
	}
}