using System;
using System.Windows.Forms;
using Tanshu.Accounts.Entities;
using Tanshu.Accounts.Repository;

namespace Tanshu.Accounts.PointOfSale
{
    public partial class CustomerForm : Form
    {
        private Guid? _customerID;
        private Customer _customer;
        private readonly string phone;
        #region Form Load
        public CustomerForm(Guid? customerID)
        {
            InitializeComponent();
            this._customerID = customerID;
        }
        public CustomerForm(Guid? customerID, string phone)
        {
            InitializeComponent();
            this._customerID = customerID;
            this.phone = phone;
        }
        private void CustomerForm_Load(object sender, EventArgs e)
        {
            if (_customerID.HasValue)
            {
                _customer = CustomerBI.Get(_customerID.Value);
                btnDelete.Enabled = true;
                txtName.Text = _customer.Name;
                txtPhone.Text = _customer.Phone;
                txtAddress.Text = _customer.Address;
                txtRemarks.Text = _customer.Remarks;
                chkImportant.Checked = _customer.Important;
            }
            else
                txtPhone.Text = phone;

            btnSave.Text = _customerID.HasValue ? "&Update" : "&Save";
        }
        #endregion

        #region Buttons
        private void btnSave_Click(object sender, EventArgs e)
        {
            if (!ValidateValues())
            {
                MessageBox.Show("Missing Information: Please check the form.");
                txtName.Focus();
            }
            else
            {
                Save();
                btnCancel_Click(sender, e);
            }
        }
        private void btnDelete_Click(object sender, EventArgs e)
        {
            CustomerBI.Delete(_customer.CustomerID);
            btnCancel_Click(sender, e);
        }
        private void btnCancel_Click(object sender, EventArgs e)
        {
            this.Close();
        }
        #endregion

        #region Add / Edit / Delete
        private bool ValidateValues()
        {
            return txtName.Text.Trim().Length != 0;
        }

        private void Save()
        {
            if (_customer == null)
                _customer = new Customer();

            _customer.Name = txtName.Text;
            _customer.Phone = txtPhone.Text;
            _customer.Address = txtAddress.Text;
            _customer.Remarks = txtRemarks.Text;
            _customer.Important = chkImportant.Checked;
            if (_customer.CustomerID == Guid.Empty)
                CustomerBI.Insert(_customer);
            else
                CustomerBI.Update(_customer);
        }
        private void Delete(Guid customerID)
        {
            CustomerBI.Delete(customerID);
        }
        #endregion

        public Customer Customer
        {
            get { return _customer; }
        }
    }
}