using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using Diplom_O.DataBase;

namespace Diplom_O
{
	public partial class SettingsForm : Form
	{
		private readonly ColumnConf[] tableUserColumns = {
			new ColumnConf(name: "Логин", size: 140)
		};
		private readonly ColumnConf[] tableAccessColumns = {
			new ColumnConf(name: "Форма", size: 140),
			new ColumnConf(name: "Просм.", size: 80),
			new ColumnConf(name: "Удал.", size: 80),
			new ColumnConf(name: "Изм.", size: 80),
			new ColumnConf(name: "Доб.", size: 80)
		};
		private readonly ColumnConf[] tableTypeStajColumns = {
			new ColumnConf(name: "Название", size: 140)
		};

		private void resetTypeStajTable()
		{
			try
			{
				var res = new List<string[]>();
				var subres = FuncDB.TypeStajListString();
				foreach (var a in subres)
					res.Add(new string[] { a });
				this.ResetTable(
					typeStajGridView,
					tableTypeStajColumns,
					res.ToArray()
				);
			}
			catch (Exception e)
			{
				this.ShowError(errorLabel, e.Message);
			}
		}
		private TypeStaj selectedTypeStajTable()
		{
			try
			{
				if (typeStajGridView.SelectedRows.Count != 1)
					return null;
				return FuncDB.TypeStajGetByName((string)typeStajGridView.SelectedRows[0].Cells[0].Value);
			}
			catch (Exception e)
			{
				this.ShowError(errorLabel, e.Message);
				return null;
			}
		}
		private void typeStajGridView_SelectionChanged(object sender, EventArgs e)
		{
			var type_staj = selectedTypeStajTable();
			textBox1.Text = type_staj == null ? "" : type_staj.Name;
		}

		private void resetUserTable()
		{
			try
			{
				this.ResetTable(
					userGridView,
					tableUserColumns,
					FuncDB.UserListTable(true)
				);
			}
			catch (Exception e)
			{
				this.ShowError(errorLabel, e.Message);
			}
		}
		private User selectedUserTable()
		{
			try
			{
				if (userGridView.SelectedRows.Count != 1)
					return null;
				return FuncDB.UserGetByLogin((string)userGridView.SelectedRows[0].Cells[0].Value);
			}
			catch (Exception e)
			{
				this.ShowError(errorLabel, e.Message);
				return null;
			}
		}
		private void userGridView_SelectionChanged(object sender, EventArgs e)
		{
			resetAccessTable();
		}

		private void initAccessTable()
    {
      try
      {
				accessGridView.Rows.Clear();
				accessGridView.Columns.Clear();
				var c = accessGridView.Columns;
				for (var i = 0; i < tableAccessColumns.Length; i++)
				{
					if (i != 0)
						c.Add(new DataGridViewCheckBoxColumn()
						{
							FalseValue = false,
							TrueValue = true,
							HeaderText = tableAccessColumns[i].name
						});
					else
						c.Add(tableAccessColumns[i].name, tableAccessColumns[i].name);
					c[i].Width = tableAccessColumns[i].size;
					if (tableAccessColumns[i].warp)
						c[i].DefaultCellStyle.WrapMode = DataGridViewTriState.True;
				}
				foreach (var formName in FormArray.formName)
				{
					accessGridView.Rows.Add();
					var row = accessGridView.Rows[accessGridView.Rows.Count - 1];
					row.Cells[0].Value = formName;
					for (var i = 0; i < FormArray.formAccess.Length; i++)
						((DataGridViewCheckBoxCell)row.Cells[i + 1]).Value = false;
				}
			}
			catch (Exception ex)
			{
				this.ShowError(errorLabel, ex.Message);
			}
		}
		private void accessGridView_CellClick(object sender, DataGridViewCellEventArgs e)
		{
			try
			{
				if (accessGridView.SelectedCells.Count != 1)
					return;
				var cell = accessGridView.SelectedCells[0];
				var accessId = cell.ColumnIndex;
				if (accessId == 0)
					return;
				else
					accessId--;
				var formId = cell.RowIndex;
				((DataGridViewCheckBoxCell)accessGridView.SelectedCells[0]).Value =
					!(bool)((DataGridViewCheckBoxCell)accessGridView.SelectedCells[0]).Value;
				var user = selectedUserTable();
				if (user == null)
					throw new Exception("Пользователь не выбран.");
				
				var access = FuncDB.AccessGetByUserIdFormIdAccessId(user.Id, formId, accessId);
				if (
					(access == null && !(bool)cell.Value) ||
					(access != null && (bool)cell.Value)
					)
					return;
				if ((bool)cell.Value)
				{
					if (FuncDB.AccessGetByUserIdFormIdAccessId(user.Id, formId, 0) == null)
						FuncDB.AccessAdd(new Access()
						{
							UserId = user.Id,
							FormId = formId,
							FormatAccess = 0
						});
					FuncDB.AccessAdd(new Access()
					{
						UserId = user.Id,
						FormId = formId,
						FormatAccess = accessId
					});
				}
				else
				{
					if (formId == 7 && FuncDB.AccessToSettingsFullCountWithoutUserId(user) == 0)
						throw new Exception("Должен хотя бы 1 польз. иметь полн. дост. к настр.");
					if (formId == user.Default && accessId == 0)
						throw new Exception("Нельзя снять разрешение для окна по умолчанию.");
					if (accessId == 0)
					{
						var list = FuncDB.AccessGetByUserIdFormId(user.Id, formId);
						foreach (var l in list)
							FuncDB.AccessDelete(l);
					}
					else
					{
						FuncDB.AccessDelete(access);
					}
				}
				resetAccessTable();
			}
			catch (Exception ex)
			{
				this.ShowError(errorLabel, ex.Message);
				resetAccessTable();
			}

		}

		private void resetAccessTable()
		{
			try
			{
				var user = selectedUserTable();
				var res = new bool[FormArray.formName.Length, FormArray.formAccess.Length];
				if (user != null)
					res = FuncDB.AccessListTable(user.Id);
				for (var i = 0; i < FormArray.formName.Length; i++)
					for (var j = 0; j < FormArray.formAccess.Length; j++)
						((DataGridViewCheckBoxCell)accessGridView.Rows[i].Cells[j + 1]).Value = res[i, j];
			}
			catch (Exception e)
			{
				this.ShowError(errorLabel, e.Message);
			}
		}

		public SettingsForm()
		{
			InitializeComponent();
			this.correctUpperMenu(menuStrip, 7);
			initAccessTable();
			resetTypeStajTable();
			resetUserTable();

			addUserButton.Enabled =
				changeUserButton.Enabled =
				delUserButton.Enabled =
				accessGridView.Enabled =
				button2.Enabled =
				button1.Enabled =
				button3.Enabled =
				false;
			var user = this.GetUser();
			if (user == null)
				return;
			accessGridView.Enabled =
				FuncDB.AccessGetByUserIdFormIdAccessId(user.Id, 7, 2) != null ||
				FuncDB.AccessGetByUserIdFormIdAccessId(user.Id, 7, 3) != null;

			delUserButton.Enabled =
				button1.Enabled =
				FuncDB.AccessGetByUserIdFormIdAccessId(user.Id, 7, 1) != null;
			changeUserButton.Enabled =
				button3.Enabled =
				FuncDB.AccessGetByUserIdFormIdAccessId(user.Id, 7, 2) != null;
			addUserButton.Enabled =
				button2.Enabled =
				FuncDB.AccessGetByUserIdFormIdAccessId(user.Id, 7, 3) != null;
		}

		private void addTypeStajButton_Click(object sender, EventArgs e)
		{
			try
			{
				var type = new TypeStaj()
				{
					Name = textBox1.Text
				};
				FuncDB.TypeStajAdd(type);
				resetTypeStajTable();
			}
			catch (Exception ex)
			{
				this.ShowError(errorLabel, ex.Message);
			}
		}
		private void changeTypeStajButton_Click(object sender, EventArgs e)
		{
			try
			{
				var type = selectedTypeStajTable();
				if (type == null)
					throw new Exception("Не вбран тип стажа.");
				type.Name = textBox1.Text;
				FuncDB.TypeStajChange(type);
				resetTypeStajTable();
			}
			catch (Exception ex)
			{
				this.ShowError(errorLabel, ex.Message);
			}
		}
		private void delTypeButton_Click(object sender, EventArgs e)
		{
			try
			{
				var type = selectedTypeStajTable();
				if (type == null)
					throw new Exception("Не вбран тип стажа.");
				FuncDB.TypeStajDelete(type);
				resetTypeStajTable();
			}
			catch (Exception ex)
			{
				this.ShowError(errorLabel, ex.Message);
			}
		}

		private void addUserButton_Click(object sender, EventArgs e)
		{
			try
			{
				var form = new SupportForms.LoginForm();
				form.ShowDialog();
				if (!form.isCanceled)
					resetUserTable();
			}
			catch (Exception ex)
			{
				this.ShowError(errorLabel, ex.Message);
			}
		}
		private void changeUserButton_Click(object sender, EventArgs e)
		{
			try
			{
				if (selectedUserTable() == null)
					throw new Exception("Не выбран пользователь.");
				var form = new SupportForms.LoginForm(selectedUserTable());
				form.ShowDialog();
				if (!form.isCanceled)
					resetUserTable();
			}
			catch (Exception ex)
			{
				this.ShowError(errorLabel, ex.Message);
			}
		}
		private void delUserButton_Click(object sender, EventArgs e)
		{
			try
			{
				var user = selectedUserTable();
				if (user == null)
					throw new Exception("Не выбран пользователь.");
				if (FuncDB.AccessToSettingsFullCountWithoutUserId(user) == 0)
					throw new Exception("Должен хотя бы 1 польз. иметь полн. дост. к настр.");
				FuncDB.UserDelete(selectedUserTable());
				resetUserTable();
			}
			catch (Exception ex)
			{
				this.ShowError(errorLabel, ex.Message);
			}
		}

		private void upperMenuClicked(object sender, ToolStripItemClickedEventArgs e)
		{
			this.upperMenuClicked((MenuStrip)sender);
			if (this.GetNextForm() != -1)
				Close();
		}


  }
}