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 ChildrenForm : Form
	{
		private readonly ColumnConf[] tableMainColumns = {
			new ColumnConf(name: "№"),
			new ColumnConf(name: "Таб. №", size: 80),
			new ColumnConf(name: "Фамилия И.О.", size: 140),
			new ColumnConf(name: "Должность", size: 140)
		};
		private readonly ColumnConf[] tableHistoryColumns =
		{
			new ColumnConf(name: "№"),
			new ColumnConf(name: "Таб. №", size: 80),
			new ColumnConf(name: "Должность", size: 140),
			new ColumnConf(name: "Дата начала", size: 80),
			new ColumnConf(name: "Дата конца", size: 80)
		};
		private readonly ColumnConf[] tableStajColumns =
		{
			new ColumnConf(name: "№"),
			new ColumnConf(name: "Тип стажа", size: 120),
		};

		private void resetRabotnikTable()
		{
			try
			{
				var res = FuncDB.RabotnikTableMain(findBox.Text);
				this.ResetTable(
					workerGridView,
					tableMainColumns,
					res
				);
			}
			catch (Exception e)
			{
				this.ShowError(errorLabel, e.Message);
			}
		}
		private Rabotnik selectedRabotnikTable()
		{
			try
			{
				if (workerGridView.SelectedRows.Count != 1)
					throw new Exception("Человек не выбран.");
				if (int.TryParse((string)workerGridView.SelectedRows[0].Cells[0].Value, out int value))
					return FuncDB.RabotnikGetById(value);
				else
					throw new Exception("Ошибка в таблице.");
			}
			catch (Exception e)
			{
				this.ShowError(errorLabel, e.Message);
				return null;
			}
		}
		private void workerGridView_SelectionChanged(object sender, EventArgs e)
		{
			resetHistoryWorkTable();
		}

		private void resetHistoryWorkTable()
    {
			try
			{
				var rabotnik = selectedRabotnikTable();
				var res = (rabotnik == null) ? Array.Empty<string[]>() : FuncDB.RabotnikByChelIdTable(rabotnik.ChelId);
				this.ResetTable(
					historyWorkGridView,
					tableHistoryColumns,
					res
				);
			}
			catch (Exception e)
			{
				this.ShowError(errorLabel, e.Message);
			}
		}
		private Rabotnik selectedHistoryWorkTable()
		{
			try
			{
				if (historyWorkGridView.SelectedRows.Count != 1)
					throw new Exception("Человек не выбран.");
				if (int.TryParse((string)historyWorkGridView.SelectedRows[0].Cells[0].Value, out int value))
					return FuncDB.RabotnikGetById(value);
				else
					throw new Exception("Ошибка в таблице.");
			}
			catch (Exception e)
			{
				this.ShowError(errorLabel, e.Message);
				return null;
			}
		}
		private void historyWorkGridView_SelectionChanged(object sender, EventArgs e)
		{
			resetRabotnikStajTable();
		}

		private void resetRabotnikStajTable()
    {
			try
			{
				var rabotnik = selectedHistoryWorkTable();
				var res = (rabotnik == null) ? Array.Empty<string[]>() :
					FuncDB.RabotnikTypeStajListString(rabotnik.Id);
				this.ResetTable(
					stajGridView,
					tableStajColumns,
					res
				);
			}
			catch (Exception e)
			{
				this.ShowError(errorLabel, e.Message);
			}
		}
		private RabotnikTypeStaj selectedRabotnikStajTable()
		{
			try
			{
				if (stajGridView.SelectedRows.Count != 1)
					throw new Exception("Стаж сотрудника не выбран.");
				if (int.TryParse((string)stajGridView.SelectedRows[0].Cells[0].Value, out int value))
					return FuncDB.RabotnikTypeStajGetById(value);
				else
					throw new Exception("Ошибка в таблице.");
			}
			catch (Exception e)
			{
				this.ShowError(errorLabel, e.Message);
				return null;
			}
		}

		private void resetTypeStajComboBox()
    {
      try
      {
				var list = FuncDB.TypeStajListString();
				comboBox1.Items.Clear();
				comboBox1.Items.AddRange(list);
				comboBox1.SelectedIndex = -1;
			}
			catch (Exception e)
      {
				this.ShowError(errorLabel, e.Message);
			}
    }

		public RabForm()
		{
			InitializeComponent();
			this.correctUpperMenu(menuStrip, 1);
			resetRabotnikTable();
			resetTypeStajComboBox();
		}

		private void addWorkerButton_Click(object sender, EventArgs e)
		{
			var form = new SupportForms.WorkerForm();
			form.ShowDialog();
			if (!form.isCanceled)
				resetRabotnikTable();
		}
		private void addWorkPlaceButton_Click(object sender, EventArgs e)
		{
			var form = new SupportForms.WorkerForm(selectedHistoryWorkTable(), true);
			form.ShowDialog();
			if (!form.isCanceled)
				resetRabotnikTable();
		}
		private void addTypeStajButton_Click(object sender, EventArgs e)
		{
			try
			{
				var typestaj = FuncDB.TypeStajGetByName(comboBox1.Text);
				if (typestaj == null)
				{
					FuncDB.TypeStajAdd(new TypeStaj() { Name = comboBox1.Text });
					typestaj = FuncDB.TypeStajGetByName(comboBox1.Text);
				}
				var rabotnik = selectedHistoryWorkTable();
				if (rabotnik == null)
					throw new Exception("Не выбран сотрудник");
				FuncDB.RabotnikTypeStajAdd(new RabotnikTypeStaj() { RabitnikId = rabotnik.Id, TypeStajId = typestaj.Id });
				resetTypeStajComboBox();
				resetRabotnikStajTable();
			}
			catch (Exception ex)
			{
				this.ShowError(errorLabel, ex.Message);
			}
		}
		private void changeWorkPlaceButton_Click(object sender, EventArgs e)
		{
			var form = new SupportForms.WorkerForm(selectedHistoryWorkTable());
			form.ShowDialog();
			if (!form.isCanceled)
				resetRabotnikTable();
		}
		private void delWorkPlaceButton_Click(object sender, EventArgs e)
		{
			var res = selectedHistoryWorkTable();
			FuncDB.RabotnikDelete(res);
			resetHistoryWorkTable();
		}
		private void delTypeStajButton_Click(object sender, EventArgs e)
		{
			var res = selectedRabotnikStajTable();
			FuncDB.RabotnikTypeStajDelete(res);
			resetRabotnikStajTable();
		}

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


  }
}