using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
using System.Data;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using BookShop.Forms;
using BookShop.Data;
using System.Drawing.Drawing2D;

namespace BookShop.UserControls
{
    public partial class UC_Sales : UserControl
    {
        private Business bs = new Business();
        book book = new book();
        public static float amount = 0;

        public UC_Sales()
        {
            InitializeComponent();
        }

        private void panel5_Paint(object sender, PaintEventArgs e)
        {

        }

        private void listView1_SelectedIndexChanged(object sender, EventArgs e)
        {

        }

        private void button7_Click(object sender, EventArgs e)
        {
            if (listView1.Items.Count == 0)
            {
                MessageBox.Show("Add books to cart please!");
            }
            else
            {
                using (Form_FinishOrder uf = new Form_FinishOrder())
                {
                    uf.ShowDialog();
                }
            }


        }

        private void button8_Click(object sender, EventArgs e)
        {
            if (string.IsNullOrWhiteSpace(textBox1.Text))
            {
                MessageBox.Show("Barcode can't be null or whitespace");
                return;
            }

            int parsedValue;
            if (!int.TryParse(textBox1.Text, out parsedValue))
            {
                MessageBox.Show("This is a number only field");
                return;
            }

            int barcodeText = int.Parse(textBox1.Text);

            button1.Enabled = false;
            if (barcodeText > 0 && barcodeText <= bs.GetAllBarcodesCount())
            {
                book = bs.GetBookByBarcode(int.Parse(textBox1.Text));
                textBox2.Text = book.Book1;
                textBox3.Text = book.Author;
                textBox4.Text = book.Price.ToString("N2");
                textBox5.Text = book.Publisher;
                button1.Enabled = true;
            }

            else
            {
                MessageBox.Show("Barcode is invalid, try another one.");
            }
        }

        private void button1_Click(object sender, EventArgs e)
        {
            if (string.IsNullOrWhiteSpace(textBox1.Text))
            {
                MessageBox.Show("Firstly type barcode.");
                button1.Enabled = false;
            }

            else
            {

                string[] row = { textBox2.Text, "1", textBox4.Text };
                var listViewItem = new ListViewItem(row);
                if (listView1.FindItemWithText(textBox2.Text) != null)
                {
                    amount = 0;
                    listView1.FindItemWithText(textBox2.Text).SubItems[1].Text = int.Parse(listView1.FindItemWithText(textBox2.Text).SubItems[1].Text) + 1 + "";
                    CalculateAmount();
                }
                else
                {
                    listView1.Items.Add(listViewItem);
                    CalculateAmount();
                }
            }
        }

        private void UC_Sales_Load(object sender, EventArgs e)
        {
            listView1.FullRowSelect = true;
            amount = 0;
        }

        private void textBox1_TextChanged(object sender, EventArgs e)
        {
            textBox2.Clear();
            textBox3.Clear();
            textBox4.Clear();
            textBox5.Clear();
            button1.Enabled = false;
        }

        private void button3_Click(object sender, EventArgs e)
        {
            if (listView1.SelectedItems.Count > 0)
            {
                ListViewItem item = listView1.SelectedItems[0];
                amount = 0;
                item.SubItems[1].Text = int.Parse(item.SubItems[1].Text) + 1 + "";
                CalculateAmount();
            }
            else
            {
                MessageBox.Show("Select row...");
            }

        }
        private void button2_Click(object sender, EventArgs e)
        {
            if (listView1.SelectedItems.Count > 0)
            {
                ListViewItem item = listView1.SelectedItems[0];
                amount = 0;

                if(int.Parse(item.SubItems[1].Text) > 1) { item.SubItems[1].Text = int.Parse(item.SubItems[1].Text) - 1 + ""; CalculateAmount(); }//PETUK
                else
                {
                    MessageBox.Show("Amount can't be less than 1");
                    item.SubItems[1].Text = 1 + "";
                }
            }
            else
            {
                MessageBox.Show("Select row...");
            }
        }

        private void button4_Click(object sender, EventArgs e)
        {
            if (listView1.SelectedItems.Count > 0)
            {
                ListViewItem item = listView1.SelectedItems[0];
                item.Remove();
                label3.Text = "0.00 $";
            }
            else
            {
                MessageBox.Show("Select row...");
            }
        }

        private void button6_Click(object sender, EventArgs e)
        {
            DialogResult result = MessageBox.Show("Your cart will be lost", "Warning", MessageBoxButtons.YesNo, MessageBoxIcon.Error);
            if (result == DialogResult.Yes)
            {
                listView1.Items.Clear();
            }
            else if(result == DialogResult.No)
            {
                return;
            }
            else
            {
                return;
            }

        }

        public void CalculateAmount()
        {

            for (int i = 0; i < listView1.Items.Count; i++)
            {
                amount += float.Parse(listView1.Items[i].SubItems[2].Text) * float.Parse(listView1.Items[i].SubItems[1].Text);

            }
            label3.Text = amount.ToString("N2") + " $";

        }
        public float amountValue
        {
            get
            {
                return amount;
            }
        }
    }
}