using BiskLog_Point_Of_Sale.Classes;
using BiskLog_Point_Of_Sale.Multiple_Login;
using BiskLog_Point_Of_Sale.Properties;
using Point_Of_Sale_Managment;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Data.SqlClient;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace BiskLog_Point_Of_Sale.Customer
{
    public partial class Finance : Form
    {
        SqlConnection cn;
        SqlCommand cm;
        SqlDataReader dr;
        DatabaseConn conn = new DatabaseConn();
        string customerID;
        List<CustomerFinance> finances = new List<CustomerFinance>();
        string currency;
        public Finance(string customerID)
        {
            InitializeComponent();
            cn = new SqlConnection(conn.MyConnection());
            this.customerID = customerID;
            holding.Left = (ClientSize.Width - holding.Width) / 2;
            holding.Top = (ClientSize.Height - holding.Height) / 2;
            currency = Settings.Default.currrencyCode + " ";


        }

        public int loadFinance()
        {
            try
            {
                cn.Open();
                cm = new SqlCommand("Select * from CustomerAccounts where branchID = @branchID and customerID = @customerID", cn);
                cm.Parameters.AddWithValue("@customerID", customerID);
                cm.Parameters.AddWithValue("@branchID", Settings.Default.BranchID);
                cm.ExecuteNonQuery();
                dr = cm.ExecuteReader();
                while (dr.Read())
                {
                    CustomerFinance customer = new CustomerFinance();
                    customer.description = dr["comments"].ToString();
                    customer.date = dr["date"].ToString();
                    customer.debit = decimal.Parse(dr["debit"].ToString());
                    customer.credit = decimal.Parse(dr["credit"].ToString());
                    customer.transactionID = dr["transactionID"].ToString();
                    customer.total = decimal.Parse(dr["balance"].ToString());
                    finances.Add(customer);
                }
                dr.Close();
                cn.Close();
                return 1;
            }
            catch (Exception ex)
            {
                ErrorLogging.WriteToFile(ex.ToString());
                cn.Close();
                return 0;
            }
        }

        private async void Finance_Load(object sender, EventArgs e)
        {
            Task<int> task = new Task<int>(loadFinance);
            holding.Visible = true;
            task.Start();
            int result = await task;
            if (result == 0)
            {
                string title = "Error Occurred";
                string message = "An error occurred while getting customer finance, please try again later.";
                NoAction noAction = new NoAction(title, message);
                noAction.BringToFront();
                noAction.ShowDialog();
            }
            else
            {
                if (finances.Count > 0)
                {
                    decimal debit = 0;
                    decimal credit = 0;
                    foreach (CustomerFinance finance in finances)
                    {
                        debit += finance.debit;
                        credit += finance.credit;
                        dataGridView1.Rows.Add(Convert.ToDateTime(finance.date).ToLongDateString(), finance.description, finance.transactionID, currency + finance.debit,
                            currency + finance.credit, currency + finance.total);
                    }
                    decimal total = debit - credit;
                    acBal.Text = "Account Balance : " + currency + total.ToString();
                }
            }
            holding.Visible = false;
        }
    }
}