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;
using BiskLog_Point_Of_Sale.Classes;
using BiskLog_Point_Of_Sale.Delivery;
using BiskLog_Point_Of_Sale.Multiple_Login;
using BiskLog_Point_Of_Sale.Properties;

namespace Point_Of_Sale_Managment
{
    public partial class AddProductTruck : Form
    {
        SqlConnection cn;
        SqlCommand command;
        DatabaseConn conn = new DatabaseConn();
        SqlDataReader dr;
        string currency;
        public static string id, product_name, price, quantity, unitname, unitcode, distinctive;
        FreeLoading formSale;
        string truckID;

        public AddProductTruck(FreeLoading formsales, string truckID)
        {
            InitializeComponent();
            cn = new SqlConnection(conn.MyConnection());
            formSale = formsales;
            this.truckID = truckID;
            currency = Settings.Default.currrencyCode + " ";
        }

        private void DataGridView1_CellClick(object sender, DataGridViewCellEventArgs e)
        {
            if (e.RowIndex != -1)
            {
                id = dataGridView1.Rows[e.RowIndex].Cells[0].Value.ToString();
                product_name = dataGridView1.Rows[e.RowIndex].Cells[1].Value.ToString();
                price = (dataGridView1.Rows[e.RowIndex].Cells[2].Value.ToString()).Substring(Settings.Default.currrencyCode.Length);
                quantity = dataGridView1.Rows[e.RowIndex].Cells[3].Value.ToString();
                unitname = dataGridView1.Rows[e.RowIndex].Cells[4].Value.ToString();
                unitcode = dataGridView1.Rows[e.RowIndex].Cells[5].Value.ToString();
                distinctive = dataGridView1.Rows[e.RowIndex].Cells[6].Value.ToString();

                if (int.Parse(quantity) <= 0)
                {
                    string title = "Out of stock";
                    string message = "Sorry, " + product_name + " is out of stock!!";
                    NoAction noAction = new NoAction(title, message);
                    noAction.BringToFront();
                    noAction.ShowDialog();
                }
                else
                {
                    quantityTruck quant = new quantityTruck(this, int.Parse(quantity));
                    quant.BringToFront();
                    quant.ShowDialog();
                }
            }
        }
        public async void AddtoCart(int quantity, decimal pPrice)
        {
            Task<int> task = new Task<int>(() => restock(quantity));
            task.Start();
            int result = await task;
            if (result == 1)
            {
                formSale.loadProductManual(product_name, quantity, pPrice, id, unitname, unitcode, distinctive);
            }
            else
            {
                string title = "Error Occurred";
                string message = "An error occurred while adding product to truck inventory";
                NoAction noAction = new NoAction(title, message);
                noAction.BringToFront();
                noAction.ShowDialog();
            }
            dataGridView1.Rows.Clear();
            proID.Text = "";
            proNAME.Text = "";
        }
        public void products(string key)
        {
            dataGridView1.Rows.Clear();
            cn.Open();
            command = new SqlCommand("Select tblProduct.pcode,tblProduct.product_name,tblInventory.quantity,tblProduct.price,u.unitname as unitname,tblProduct.baseUnit as unitCode " +
               "from tblProduct Inner Join tblInventory On tblInventory.pcode = tblProduct.pcode Inner Join UnitOfMeasure u On u.unitCode = tblProduct.baseUnit " +
               "where tblProduct.branchID = @branch and tblProduct.status = 'ACTIVE' and tblProduct.pcode like '%" + key + "%' or " +
               "tblProduct.branchID = @branch and tblProduct.status = 'ACTIVE' and tblProduct.product_name like '%" + key + "%' " +
               "SELECT PAU.pcode,tp.product_name,uni.unitname as unitname,[price/unit] as price,(ti.quantity / [quantity/unit]) as quantity,PAU.unitCode ,distinctiveCode " +
               "FROM ProductAltUnit PAU Inner Join UnitOfMeasure uni On uni.unitCode = PAU.unitCode Inner Join tblProduct tp On tp.pcode = PAU.pcode " +
               "Inner Join tblInventory ti On ti.pcode = PAU.pcode where tp.branchID = @branch and tp.status = 'ACTIVE' and PAU.pcode like '%" + key + "%' or " +
               "tp.branchID = @branch and tp.status = 'ACTIVE' and tp.product_name like '%" + key + "%'", cn);
            command.Parameters.AddWithValue("@branch", Settings.Default.BranchID);
            command.ExecuteNonQuery();
            dr = command.ExecuteReader();
            while (dr.Read())
            {
                dataGridView1.Rows.Add(dr[0].ToString(), dr["product_name"].ToString(), currency + dr["price"].ToString(), dr["quantity"].ToString(),
                    dr["unitname"].ToString(), dr["unitCode"].ToString(), dr[0].ToString());
            }
            dr.NextResult();
            while (dr.Read())
            {
                dataGridView1.Rows.Add(dr[0].ToString(), dr["product_name"].ToString(), currency + dr["price"].ToString(), dr["quantity"].ToString(),
                    dr["unitname"].ToString(), dr["unitCode"].ToString(), dr["distinctiveCode"].ToString());
            }
            dr.Close();
            cn.Close();
        }

        private void Label2_Click(object sender, EventArgs e)
        {
            this.Close();
        }

        private void Label2_MouseEnter(object sender, EventArgs e)
        {
            label2.BackColor = Color.Crimson;
        }

        private void Label2_MouseLeave(object sender, EventArgs e)
        {
            label2.BackColor = Color.FromArgb(20, 158, 37);
        }

        private void AddProducttoCart_KeyDown(object sender, KeyEventArgs e)
        {
            if (e.KeyCode == Keys.Escape)
            {
                this.Close();
            }
        }

        private void ProID_TextChanged(object sender, EventArgs e)
        {
            if (String.IsNullOrEmpty(proID.Text))
            {
                dataGridView1.Rows.Clear();
            }
            else
            {
                products(proID.Text);
            }

        }

        private void ProNAME_TextChanged(object sender, EventArgs e)
        {
            if (String.IsNullOrEmpty(proNAME.Text))
            {
                dataGridView1.Rows.Clear();
            }
            else
            {
                products(proNAME.Text);
            }
        }
        private int restock(int quantity)
        {
            cn.Open();
            SqlTransaction transaction;
            transaction = cn.BeginTransaction();
            try
            {
                command = new SqlCommand("; With NewValues AS (Select truckID = @truckID,pcode = @pcode,quantity = @quantity,countID = @countID,unit = @unit) " +
                    "Merge Into tblTruckInventory As T Using NewValues As NV On(T.pcode = NV.pcode and NV.truckID = t.truckID and T.unit = NV.unit) When Not Matched By Target Then " +
                    "Insert(truckID, pcode, quantity, countID,unit) Values(NV.truckID, NV.pcode, NV.quantity, NV.countID,NV.unit) When Matched Then " +
                    "Update set T.quantity = T.quantity + NV.quantity; ", cn, transaction);
                command.Parameters.AddWithValue("@truckID", truckID);
                command.Parameters.AddWithValue("@quantity", quantity);
                command.Parameters.AddWithValue("@pcode", id);
                command.Parameters.AddWithValue("@unit", unitcode);
                command.Parameters.AddWithValue("@countID", id + Form1.branch + DateTime.Now.ToString("yyyyMMddHHmmssfff"));
                command.ExecuteNonQuery();

                command = new SqlCommand("Declare @baseunit varchar(150) = (Select baseUnit from tblProduct where pcode = @pcode) " +
                        "Declare @dquantity int = Case when @baseUnit = @unit then 1 * @quantity else " +
                        "(Select[quantity/unit] * @quantity as quantity from ProductAltUnit where pcode = @pcode and unitCode = @unit and branchID = @branchID) " +
                        "end Declare @newQuantity int = (Select MAX(quantity) - MIN(@dquantity) from tblInventory where pcode = @pcode and branchID = @branchID) " +
                        "Update tblInventory set quantity = @newQuantity where pcode = @pcode and branchID = @branchID " +
                        "Insert into tblInventoryEntries(pcode, quantity, date, countID, branchID) values (@pcode, @newQuantity, @date, @countID, @branchID)", cn, transaction);
                command.Parameters.AddWithValue("@pcode", id);
                command.Parameters.AddWithValue("@date", DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss.fff"));
                command.Parameters.AddWithValue("@branchID", Form1.branch);
                command.Parameters.AddWithValue("@countID", id + Form1.branch + DateTime.Now.ToString("yyyyMMddHHmmssfff"));
                command.Parameters.AddWithValue("@quantity", quantity);
                command.Parameters.AddWithValue("@unit", unitcode);
                command.ExecuteNonQuery();
                transaction.Commit();
                cn.Close();
                return 1;
            }
            catch (Exception ex)
            {
                cn.Close();
                ErrorLogging.WriteToFile(ex.ToString());
                return 0;
            }
        }
    }
}