using System;
using System.Collections.Generic;
using System.Windows.Forms;
using System.Drawing;
using Tanshu.Accounts.Entities;
using System.Collections;
using Tanshu.Common.KeyboardControl;

namespace Tanshu.Accounts.Helpers
{
    public delegate void ButtonClickDelegate(object sender, EventArgs e);

    public static class ControlFactory
    {
        public static void GenerateTables(ref FlowLayoutPanel panel, Point size, int start, IList<FoodTable> inList, ButtonClickDelegate bcDelegate, ButtonClickDelegate pageDelegate)
        {
            IList<FoodTable> list = new List<FoodTable>();
            int pageLength, stop;
            PageSetup(panel, start, inList as IList, size, out pageLength, out stop);
            if (start != 0)
                list.Add(new FoodTable() { FoodTableID = Guid.Empty, Name = "Previous" });
            for (int i = start; i < stop; i++)
            {
                list.Add(inList[i]);
            }
            if (stop < inList.Count)
                list.Add(new FoodTable() { FoodTableID = Guid.Empty, Name = "Next" });

            for (int i = 0; i < list.Count; i++)
            {
                var item = list[i];
                Button control;
                var status = "";
                if (item.FoodTableID == Guid.Empty)
                {
                    var pageLocation = item.Name == "Previous" ? start - pageLength : stop;
                    control = new Button()
                    {
                        Name = string.Format("p{0}", i),
                        Text = item.Name,
                        Width = size.X,
                        Height = size.Y,
                        Tag = pageLocation,
                    };
                    control.Click += new EventHandler(pageDelegate);
                    status = "paging";
                }
                else
                {
                    status = item.Status;
                    control = new Button()
                    {
                        Name = string.Format("g{0}", i),
                        Text = item.Name,
                        Width = size.X,
                        Height = size.Y,
                        Tag = item,
                    };
                    control.Click += new EventHandler(bcDelegate);
                }
                if (status == "printed")
                    control.BackColor = Color.Green;
                else if (status == "running")
                    control.BackColor = Color.Red;
                panel.Controls.Add(control);
            }
        }
        public static void GenerateProducts(ref FlowLayoutPanel panel, Point size, int start, IList<Product> inList, ButtonClickDelegate bcDelegate, ButtonClickDelegate pageDelegate)
        {
            IList<Product> list = new List<Product>();
            int pageLength, stop;
            PageSetup(panel, start, inList as IList, size, out pageLength, out stop);
            if (start != 0)
                list.Add(new Product() { ProductID = Guid.Empty, Name = "Previous" });
            for (int i = start; i < stop; i++)
            {
                list.Add(inList[i]);
            }
            if (stop < inList.Count)
                list.Add(new Product() { ProductID = Guid.Empty, Name = "Next" });

            for (var i = 0; i < list.Count; i++)
            {
                var item = list[i];
                Button control;
                if (item.ProductID == Guid.Empty)
                {
                    var pageLocation = item.Name == "Previous" ? start - pageLength : stop;
                    control = new Button()
                    {
                        Name = string.Format("p{0}", i),
                        Text = item.Name,
                        Width = size.X,
                        Height = size.Y,
                        Tag = pageLocation,
                    };
                    control.Click += new EventHandler(pageDelegate);
                }
                else
                {
                    control = new Button()
                    {
                        Name = string.Format("p{0}", i),
                        Text = (item.HasHappyHour ? "H H " : "") + item.FullName,
                        Width = size.X,
                        Height = size.Y,
                        Tag = item,
                    };
                    control.Click += new EventHandler(bcDelegate);
                    if (item.HasHappyHour)
                        control.BackColor = Color.Yellow;
                    if (item.IsNotAvailable)
                        control.BackColor = Color.Red;
                }
                panel.Controls.Add(control);
            }
        }
        // For Discount Form
        public static void GenerateGroups(ref FlowLayoutPanel panel, Point size, IList<string> list, ButtonClickDelegate bcDelegate)
        {
            panel.Controls.Clear();
            for (int i = 0; i < list.Count; i++)
            {
                var item = list[i];
                var control = GetUnselectableCheckbox(i.ToString(), item, size, item, bcDelegate);
                panel.Controls.Add(control);
            }
        }
        // For Main Form
        public static void GenerateGroups(ref FlowLayoutPanel panel, Point size, int start, IList<ProductGroup> inList, ButtonClickDelegate bcDelegate, ButtonClickDelegate pageDelegate)
        {
            IList<ProductGroup> list = new List<ProductGroup>();
            int pageLength, stop;
            PageSetup(panel, start, inList as IList, size, out pageLength, out stop);
            if (start != 0)
                list.Add(new ProductGroup() { ProductGroupID = Guid.Empty, Name = "Previous" });
            for (int i = start; i < stop; i++)
            {
                list.Add(inList[i]);
            }
            if (stop < inList.Count)
                list.Add(new ProductGroup() { ProductGroupID = Guid.Empty, Name = "Next" });

            for (int i = 0; i < list.Count; i++)
            {
                var item = list[i];
                Button control;
                if (item.ProductGroupID == Guid.Empty)
                {
                    var pageLocation = item.Name == "Previous" ? start - pageLength : stop;
                    control = new Button()
                    {
                        Name = string.Format("p{0}", i),
                        Text = item.Name,
                        Width = size.X,
                        Height = size.Y,
                        Tag = pageLocation,
                    };
                    control.Click += new EventHandler(pageDelegate);
                }
                else
                {
                    control = new Button()
                    {
                        Name = string.Format("g{0}", i),
                        Text = item.Name,
                        Width = size.X,
                        Height = size.Y,
                        Tag = item,
                    };
                    control.Click += new EventHandler(bcDelegate);
                }
                panel.Controls.Add(control);
            }
        }
        public static void GenerateModifiers(ref FlowLayoutPanel panel, ref IList<CheckBox> controlList, IList<Modifier> selection, Point size, int count, IList<Modifier> list, ButtonClickDelegate bcDelegate)
        {
            if (controlList.Count != 0)
            {
                for (int i = controlList.Count - 1; i >= 0; i--)
                {
                    controlList[i].Dispose();
                }
                controlList = new List<CheckBox>();
            }
            if (count > list.Count)
                count = list.Count;
            for (int i = 0; i < count; i++)
            {
                var item = list[i];
                var control = GetCheckbox(i.ToString(), item.Name, size, item, bcDelegate);
                control.Checked = selection.Contains(item);
                panel.Controls.Add(control);
                controlList.Add(control);
            }
        }

        private static void PageSetup(FlowLayoutPanel panel, int start, ICollection inList, Point size, out int pageLength, out int stop)
        {
            panel.Controls.Clear();
            var marginWidth = panel.Margin.Right + panel.Margin.Left;
            var marginHeight = panel.Margin.Top + panel.Margin.Bottom;
            pageLength = panel.ClientSize.Height / (marginHeight + size.Y);
            pageLength *= panel.ClientSize.Width / (marginWidth + size.X);
            if (inList.Count <= pageLength)
            {
                start = 0;
                stop = inList.Count;
            }
            else
            {
                pageLength -= 2;
                if (start == 0)
                    pageLength += 1;
                stop = start + pageLength;
                if (stop > inList.Count)
                    stop = inList.Count;
            }
        }
        private static UnselectableCheckbox GetUnselectableCheckbox(string name, string text, Point size, object tag, ButtonClickDelegate bcDelegate)
        {
            var control = new UnselectableCheckbox()
            {
                Name = name,
                Text = text,
                Width = size.X,
                Height = size.Y,
                Tag = tag,
                Appearance = Appearance.Button,

            };
            if (bcDelegate != null)
                control.Click += new EventHandler(bcDelegate);
            return control;
        }
        private static CheckBox GetCheckbox(string name, string text, Point size, object tag, ButtonClickDelegate bcDelegate)
        {
            var control = new CheckBox()
            {
                Name = name,
                Text = text,
                Width = size.X,
                Height = size.Y,
                Tag = tag,
                Appearance = Appearance.Button,

            };
            if (bcDelegate != null)
                control.Click += new EventHandler(bcDelegate);
            return control;
        }
    }
}