using System;
using System.Windows.Forms;
using Tanshu.Accounts.Repository;
using Tanshu.Accounts.Entities;
using System.Linq;
using System.Collections.Generic;

namespace Tanshu.Accounts.PointOfSale
{
    public partial class ModifierEditForm : Form
    {
        private Guid? _modifierID;
        public ModifierEditForm(Guid modifierID)
            : this()
        {
            _modifierID = modifierID;
        }

        public ModifierEditForm()
        {
            InitializeComponent();
        }

        private void ModifierEditForm_Load(object sender, EventArgs e)
        {
            Modifier modifier;
            using (var bi = new ModifierBI())
            {
                var groups = bi.ProductGroupList();
                clbGroups.DataSource = groups;
                if (_modifierID.HasValue)
                {

                    modifier = bi.Get(x => x.ModifierID == _modifierID.Value);

                    txtName.Text = modifier.Name;
                    chkShowInBill.Checked = modifier.ShowInBill;
                    txtPrice.Text = modifier.Price.ToString();
                    if (modifier.ProductGroupModifiers.Any(x => x.ProductGroup == null))
                    {
                        chkShowForAll.Checked = true;
                        clbGroups.Hide();
                    }
                    else
                    {
                        chkShowForAll.Checked = false;
                    }
                    for (int i = 0; i < clbGroups.Items.Count; i++)
                    {
                        var item = (ProductGroup)clbGroups.Items[i];
                        if (item.ProductGroupModifiers.Any(x => x.Modifier == modifier))
                        {
                            clbGroups.SetItemChecked(i, true);
                        }
                    }
                }
                else
                {
                    txtName.Focus();
                }
            }
        }

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

        private void btnOk_Click(object sender, EventArgs e)
        {
            Modifier modifier;
            using (var bi = new ModifierBI())
            {
                if (_modifierID.HasValue)
                    modifier = bi.Get(x => x.ModifierID == _modifierID.Value);
                else
                    modifier = new Modifier();

                if (string.IsNullOrEmpty(txtName.Text.Trim()))
                    return;
                modifier.Name = txtName.Text.Trim();
                decimal price;
                if (!decimal.TryParse(txtPrice.Text, out price))
                    return;
                if (price < 0)
                    return;
                modifier.Price = price;
                modifier.ShowInBill = chkShowInBill.Checked;
                if (_modifierID.HasValue)
                    bi.Update(modifier, chkShowForAll.Checked, clbGroups.CheckedItems.OfType<ProductGroup>());
                else
                    bi.Insert(modifier, chkShowForAll.Checked, clbGroups.CheckedItems.OfType<ProductGroup>());
                bi.SaveChanges();
            }
            MessageBox.Show("Update / Save Successful");
            this.Close();
        }
        private void clbGroups_Format(object sender, ListControlConvertEventArgs e)
        {
            e.Value = ((ProductGroup)e.ListItem).Name;
        }

        private void chkShowForAll_CheckedChanged(object sender, EventArgs e)
        {
            if (chkShowForAll.Checked)
                clbGroups.Hide();
            else
                clbGroups.Show();
        }
    }
}