using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Linq;

using System.Text;

using System.Windows.Forms;

using TravelAgencyDAL;

using System.Text.RegularExpressions;



namespace Beginning

{

    public partial class frmMain : Form

    {

        private DataGridViewCellCollection current;



        public frmMain()

        {

            InitializeComponent();

            BindControls();

            BusesBindControls();

        }



        private void BindControls()

        {

            var data = from d in DAO.GetAllDestinations()

                       select new

                       {

                           ID = d.DestinationID,

                           Destination = d.DestistionName,

                           WeekSchedule = DAO.GetWeekSchedule(d.DestinationID)

                       };



            dgvMain.DataSource = data.ToList();

            dgvMain.Columns[0].Visible = false;

        }



        private void BusesBindControls()

        {

            var data = from b in DAO.GetAllBuses()

                       select new

                       {

                           ID = b.BusID,

                           RegNum = b.BusRegNumber,

                           Capacity = b.BusCapacity

                       };



            dgvBuses.DataSource = data.ToList();

            dgvBuses.Columns[0].Visible = false;

        }



        private void btnAddDestinationn_Click(object sender, EventArgs e)

        {

            AddDestination frmAdd = new AddDestination();

            frmAdd.Show();

            this.Hide();

        }



        private void btnShow_Click(object sender, EventArgs e)

        {

            current = dgvMain.CurrentRow.Cells;

            frmDestinationDetails frmDetails = new frmDestinationDetails(

                Convert.ToInt64(current["ID"].Value.ToString()));

            frmDetails.Show();

            this.Hide();

        }



        private void btnDelete_Click(object sender, EventArgs e)

        {

            current = dgvMain.CurrentRow.Cells;



            long id = Convert.ToInt64(current["ID"].Value.ToString());



            bool confirm =

                MessageBox.Show("Delete the selected destination?", "Confirmation", MessageBoxButtons.YesNo,

                 MessageBoxIcon.Question) == DialogResult.Yes;



            if (id != 0)

            {

                if (confirm)

                {

                    DAO.DeleteDestination(id);

                }

            }



            BindControls();

        }



        private void btnAddBus_Click(object sender, EventArgs e)

        {

            gbAddNewBus.Enabled = true;

        }



        private void btnCancel_Click(object sender, EventArgs e)

        {

            gbAddNewBus.Enabled = false;

            txtRegNum.Text = string.Empty;

            txtCapacity.Text = string.Empty;

        }



        private void btnOK_Click(object sender, EventArgs e)

        {            

            Buse newBus = new Buse();

            newBus.BusCapacity = Convert.ToInt32(txtCapacity.Text);

            newBus.BusRegNumber = txtRegNum.Text;



            bool confirm =

                MessageBox.Show("Add this bus?", "Confirmation", MessageBoxButtons.OKCancel,

                MessageBoxIcon.Question, MessageBoxDefaultButton.Button1) == DialogResult.OK;



            if (confirm)

            {

                DAO.AddNewBus(newBus);

                MessageBox.Show("A new Bus Added!");

                BusesBindControls();

                gbAddNewBus.Enabled = false;

            }

        }



        private void btnDeleteBus_Click(object sender, EventArgs e)

        {

            current = dgvBuses.CurrentRow.Cells;



            long id = Convert.ToInt64(current["ID"].Value.ToString());



            if (id != 0)

            {

                bool confirm =

                    MessageBox.Show("Delete this bus?", "Confirmation", MessageBoxButtons.OKCancel,

                    MessageBoxIcon.Question, MessageBoxDefaultButton.Button1) == DialogResult.OK;



                if (confirm)

                {

                    DAO.DeleteBus(id);

                    MessageBox.Show("The Bus was Deleted!");

                }

            }



            BusesBindControls();

        }



        private void button1_Click(object sender, EventArgs e)

        {

            frmBusesSchedules busSchedules = new frmBusesSchedules();

            busSchedules.Show();

            this.Hide();

        }



        private void frmMain_FormClosing(object sender, FormClosingEventArgs e)

        {

            Application.Exit();

        }



        #region Validation



        private void txtRegNum_Validating(object sender, CancelEventArgs e)

        {

            ValidateRegNum();

        }



        private void txtCapacity_Validating(object sender, CancelEventArgs e)

        {

            ValidateCapacity();

        }



        private bool ValidateRegNum()

        {

            if (IsRegNumValid(txtRegNum.Text))

            {

                epValidateData.SetError(txtRegNum, "");

                return true;

            }

            else

            {

                epValidateData.SetError(txtRegNum, "Not a valid reg. number!");

                return false;

            }

        }



        private bool IsRegNumValid(string regNum)

        {

            string pattern = @"[A-Z]{1,2}\s{1}[0-9]{4}\s{1}[A-Z]{1,2}";



            Match match = Regex.Match(regNum, pattern);



            if (match.Success)

            {

                return true;

            }

            else

            {

                return false;

            }

        }



        private bool ValidateCapacity()

        {

            if (IsCapacityValid(txtCapacity.Text))

            {

                epValidateData.SetError(txtCapacity, "");

                return true;

            }

            else

            {

                epValidateData.SetError(txtCapacity, "Not a valid capacity!");

                return false;

            }

        }



        private bool IsCapacityValid(string capacity)

        {

            try

            {

                if (Decimal.Parse(capacity) > 0)

                {

                    return true;

                }

                else

                {

                    return false;

                }

            }

            catch (FormatException)

            {

                return false;

            }

        }



        #endregion

    }

}