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 ShtatForm : Form
	{
		private readonly ColumnConf[] tableColumns =
		{
			new ColumnConf("№"),
			new ColumnConf("Должность", 140),
			new ColumnConf(name: "Кол-во"),
			new ColumnConf(name: "Своб.")
		};

		private void findBox_TextChanged(object sender, EventArgs e)
		{
			this.FindOnChanged(resetShatTable);
		}
		private void dropFindButton_Click(object sender, EventArgs e)
		{
			findBox.Text = "";
			this.FindOnChanged(null);
			resetShatTable();
		}

		private void resetShatTable()
		{
			try
			{
				var tmp = FuncDB.ShtatListTableMain(findBox.Text, freeShtatCheckBox.Checked);
				var res = new List<string[]>();
				foreach (var i in tmp)
					if (int.TryParse(i[0], out int t) && t != 0)
						res.Add(i);
				this.ResetTable(
					shtatGridView,
					tableColumns,
					freeShtatCheckBox.Checked ? 
						tmp :
						res.ToArray()
				);
			}
			catch ( Exception e )
			{
				this.ShowError( errorLabel, e.Message );
			}
		}
		private Shtat selectedShtat()
		{
			try
			{
				if ( shtatGridView.SelectedRows.Count != 1 )
					throw new Exception("Должность не выбрана.");
				if (int.TryParse((string)shtatGridView.SelectedRows[0].Cells[0].Value, out int value))
					return FuncDB.ShtatGetById(value);
				else
					throw new Exception("Ошибка в таблице.");
			}
			catch (Exception e)
			{
				this.ShowError(errorLabel, e.Message);
				return null;
			}
		}
		
		public bool isCanceled = true;
		public Shtat formResult = null;
		public ShtatForm(bool select = false)
		{
			try
			{
				InitializeComponent();
				selectButton.Visible = select;
				shtatMI.Enabled = !select;
				this.correctUpperMenu(menuStrip, 0);
				resetShatTable();

				addButton.Enabled =
					changeButton.Enabled =
					delButton.Enabled = false;
				var user = this.GetUser();
				if (user == null)
					return;
				delButton.Enabled = FuncDB.AccessGetByUserIdFormIdAccessId(user.Id, 0, 1) != null;
				changeButton.Enabled = FuncDB.AccessGetByUserIdFormIdAccessId(user.Id, 0, 2) != null;
				addButton.Enabled = FuncDB.AccessGetByUserIdFormIdAccessId(user.Id, 0, 3) != null;

			}
			catch { this.Close(); }
		}
		
		private void addButton_Click(object sender, EventArgs e)
		{
			var res = new SupportForms.WorkShtatForm();
			res.ShowDialog();
			if (!res.isCanceled)
				resetShatTable();
		}
		private void changeButton_Click(object sender, EventArgs e)
		{
			var shtat = selectedShtat();
			if (shtat == null)
				return;
			var res = new SupportForms.WorkShtatForm(shtat);
			res.ShowDialog();
			if (!res.isCanceled)
				resetShatTable();
		}
		private void delButton_Click(object sender, EventArgs e)
		{
			var shtat = selectedShtat();
			if (shtat == null)
				return;
			try
			{
				FuncDB.ShtatDelete(shtat);
				resetShatTable();
			}
			catch (Exception ex)
			{
				this.ShowError(errorLabel, ex.Message);
			}
		}
		private void selectButton_Click(object sender, EventArgs e)
		{
			formResult = selectedShtat();
			isCanceled = false;
			this.Close();
		}

		private void checkBox_CheckedChanged(object sender, EventArgs e)
		{
			resetShatTable();
		}

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


  }
}