Biskilog/BISKILOG POS BASIC/Cashier Module/POS Module/settlePayment.cs

using BiskLog_Point_Of_Sale.Multiple_Login;
using BiskLog_Point_Of_Sale.Properties;
using System;
using System.Data.SqlClient;
using System.Drawing;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace Point_Of_Sale_Managment.CashierModule
{
    public partial class settlePayment : Form
    {
        string currency;
        NewSalesPOS selling;
        decimal balponit, paymentponit;
        public settlePayment(NewSalesPOS sales)
        {
            InitializeComponent();
            currency = Settings.Default.currrencyCode + " ";
            selling = sales;
            holding.Left = (this.Width - holding.Width) / 2;
        }

        private void settlePayment_KeyDown(object sender, KeyEventArgs e)
        {
            if (e.KeyCode == Keys.Escape)
            {
                this.Close();
            }
        }
        private void button16_Click(object sender, EventArgs e)
        {
            payment.AppendText("1");
        }
        private void button17_Click(object sender, EventArgs e)
        {
            payment.AppendText("2");
        }
        private void button18_Click(object sender, EventArgs e)
        {
            payment.AppendText("3");
        }
        private void button19_Click(object sender, EventArgs e)
        {
            payment.AppendText(".");
        }
        private void button15_Click(object sender, EventArgs e)
        {
            payment.AppendText("0");
        }
        private void button11_Click(object sender, EventArgs e)
        {
            payment.Text = "";
        }
        private void button14_Click(object sender, EventArgs e)
        {
            payment.AppendText("6");
        }
        private void button13_Click(object sender, EventArgs e)
        {
            payment.AppendText("5");
        }
        private void button12_Click(object sender, EventArgs e)
        {
            payment.AppendText("4");
        }
        private void button10_Click(object sender, EventArgs e)
        {
            payment.AppendText("9");
        }
        private void button9_Click(object sender, EventArgs e)
        {
            payment.AppendText("8");
        }
        private void btnSave_Click(object sender, EventArgs e)
        {
            payment.AppendText("7");
        }
        private void settlePayment_Load(object sender, EventArgs e)
        {
            payment.Focus();
            cost.Text = currency + NewSalesPOS.mainTotal.ToString();
            owe.Text = currency + NewSalesPOS.mainTotal.ToString();
        }
        private void payment_TextChanged(object sender, EventArgs e)
        {
            if (!String.IsNullOrEmpty(payment.Text))
            {
                decimal amount = decimal.Parse(payment.Text);
                if (!String.IsNullOrEmpty(payment.Text))
                {
                    arrangement(amount);
                }
                else
                {
                    arrangement(decimal.Parse("0.00"));
                }
            }

        }
        public void arrangement(decimal payment)
        {
            decimal paid = NewSalesPOS.mainTotal - payment;
            paymentponit = payment;

            if (paid < 0)
            {
                bal.Text = currency + (paid * -1).ToString();
                balponit = decimal.Parse((paid * -1).ToString());
                owe.Text = currency + 0.00;
            }
            else if (paid == 0)
            {
                bal.Text = currency + paid.ToString();
                balponit = decimal.Parse(paid.ToString());
                owe.Text = currency + 0.00;
            }
            else
            {
                owe.Text = currency + paid.ToString();
                bal.Text = currency + 0.00;
                balponit = decimal.Parse("00.00");
            }
        }
        private void payment_KeyPress(object sender, KeyPressEventArgs e)
        {
            if (e.KeyChar == 8)
            {
                //accepts backspace
            }
            else if ((e.KeyChar < 48) || (e.KeyChar > 57)) //ascii code 48-57 between 0-9
            {
                e.Handled = true;
            }
            else if (e.KeyChar == 46)
            {
                // accepts . character
            }
        }

        private void Close_Click(object sender, EventArgs e)
        {
            this.Close();
        }

        private void Close_MouseEnter(object sender, EventArgs e)
        {
            close.BackColor = Color.Crimson;
        }

        private void Close_MouseLeave(object sender, EventArgs e)
        {
            close.BackColor = Color.Transparent;
        }

        private async void Button21_Click(object sender, EventArgs e)
        {
            if (owe.Text.Equals(currency + 0.00))
            {
                Task<int> task = new Task<int>(() => selling.makePayment(balponit, paymentponit));
                holding.Visible = true;
                task.Start();
                int result = await task;
                if (result == 1)
                {
                    holding.Visible = false;
                    string title = "Success";
                    string message = "Payment made successfully";
                    NoAction noAction = new NoAction(title, message);
                    noAction.BringToFront();
                    noAction.ShowDialog();
                    this.Close();
                }
                else
                {
                    holding.Visible = false;
                    string title = "Error Occurred";
                    string message = "Sorry an error occurred while making payment, please try again";
                    NoAction noAction = new NoAction(title, message);
                    noAction.BringToFront();
                    noAction.ShowDialog();
                }
            }
            else
            {
                holding.Visible = false;
                string title = "Full amount not paid";
                string message = "Bill needs to be fully settled to continue";
                NoAction noAction = new NoAction(title, message);
                noAction.BringToFront();
                noAction.ShowDialog();
            }
        }
    }
}