using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace Caisses
{
    public partial class Form1 : Form
    {
        // for the drag and drop of the form
        public const int WM_NCLBUTTONDOWN = 0xA1;
        public const int HT_CAPTION = 0x2;
        [DllImportAttribute("user32.dll")]
        public static extern int SendMessage(IntPtr hWnd, int Msg, int wParam, int lParam);
        [DllImportAttribute("user32.dll")]
        public static extern bool ReleaseCapture();
        // for the drag and drop of the form

        GraphicalStore store;
        public Form1()
        {
            InitializeComponent();
            DoubleBuffered = true;
            store = new GraphicalStore(10, 12, pbxCaisses.Size);
        }

        private void btnStartStop_Click(object sender, EventArgs e)
        {
            StartSimulation();
        }
        public void StartSimulation()
        {
            if (tmrRefresh.Enabled)
            {
                tmrRefresh.Stop();
                tmrDraw.Stop();
                btnStartStop.Text = "Start";
            }
            else
            {
                tmrRefresh.Start();
                tmrDraw.Start();
                btnStartStop.Text = "Stop";
            }
        }

        private void tmrRefresh_Tick(object sender, EventArgs e)
        {
            store.Tick();
        }

        private void tmrDraw_Tick(object sender, EventArgs e)
        {
            List<Bitmap> result = store.Draw(pbxRayons.Size, pbxWaitRoom.Size, pbxCaisses.Size);
            if (pbxRayons.Image != null)
            {
                pbxRayons.Image.Dispose();
            }
            if (pbxCaisses.Image != null)
            {
                pbxCaisses.Image.Dispose();
            }
            if (pbxWaitRoom.Image != null)
            {
                pbxWaitRoom.Image.Dispose();
            }
            pbxRayons.Image = result[0];
            pbxWaitRoom.Image = result[1];
            pbxCaisses.Image = result[2];

            lblClients.Text = "Clients : " + store.Clients.Count();
            lblClientsWithoutCheckout.Text = "Clients without checkout : " + store.WaitingClients.Count();
            lblAvaiblePlaces.Text = "Avaible places = " + store.TotalPlacesLeftCount;
            lblAvgWaitingTime.Text = "AverageWaitingTime = " + store.AverageWaitingTime;
            lblTime.Text = store.TimeOfTheDayInHours + ":" + store.TimeOfTheDayInMinuts % 60;
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            ResizeCanvas();
            pbxCaisses.MouseDown += Form1_MouseDown;
            pbxRayons.MouseDown += Form1_MouseDown;
            pbxWaitRoom.MouseDown += Form1_MouseDown;

            this.KeyPreview = true;
        }

        private void pbxWaitRoom_Click(object sender, EventArgs e)
        {

        }

        private void pbxCaisses_Click(object sender, EventArgs e)
        {

        }

        private void pbxRayons_Click(object sender, EventArgs e)
        {

        }

        private void Form1_Resize(object sender, EventArgs e)
        {
            ResizeCanvas();
        }
        private void ResizeCanvas()
        {
            /*
            pbxRayons.Size = new Size(this.Width, Convert.ToInt32((this.Height / 10.0) * 5.0));
            pbxRayons.Location = new Point(0, 0);
            pbxWaitRoom.Size = new Size(this.Width, Convert.ToInt32((this.Height / 10.0) * 2.0));
            pbxWaitRoom.Location = new Point(0, pbxRayons.Height);
            pbxCaisses.Size = new Size(this.Width, Convert.ToInt32((this.Height / 10.0) * 3.0));
            pbxCaisses.Location = new Point(0, pbxWaitRoom.Location.Y + pbxWaitRoom.Height);
            */
            pbxRayons.Size = new Size(this.Width, Convert.ToInt32((this.Height / 10.0) * 7.0));
            pbxRayons.Location = new Point(0, 0);

            pbxWaitRoom.Size = new Size(this.Width / 6, this.Height / 3);
            pbxWaitRoom.Location = new Point(this.Width - pbxWaitRoom.Width, 0);

            pbxCaisses.Size = new Size(this.Width, Convert.ToInt32((this.Height / 10.0) * 3.0));
            pbxCaisses.Location = new Point(0, pbxRayons.Height);
        }

        private void Form1_KeyPress(object sender, KeyPressEventArgs e)
        {
            if (e.KeyChar == 'f' || e.KeyChar == 'F')
            {
                //We need to put the form in fullScreen
                if (this.WindowState == FormWindowState.Normal)
                {
                    this.WindowState = FormWindowState.Maximized;
                }
                else
                {
                    this.WindowState = FormWindowState.Normal;
                }
            }
            if (e.KeyChar == (char)Keys.Escape)
                Application.Exit();
            if (e.KeyChar == 'o' || e.KeyChar == 'O')
                pnlOptions.Visible = !pnlOptions.Visible;
            if (e.KeyChar == (char)Keys.Space)
                StartSimulation();
            if(e.KeyChar == 'i' || e.KeyChar == 'I')
                pnlInfos.Visible = !pnlInfos.Visible;
            if(e.KeyChar == 'x' || e.KeyChar == 'X')
                pnlControls.Visible = !pnlControls.Visible;
        }

        private void Form1_MouseDown(object sender, MouseEventArgs e)
        {
            if (e.Button == MouseButtons.Left)
            {
                ReleaseCapture();
                SendMessage(Handle, WM_NCLBUTTONDOWN, HT_CAPTION, 0);
            }
        }

        private void btnAdd5Clients_Click(object sender, EventArgs e)
        {
            store.AddClients(5);
        }

        private void btnEmptyStore_Click(object sender, EventArgs e)
        {
            store.ClearStore();
        }

        private void btnEmptyWaitingRoom_Click(object sender, EventArgs e)
        {
            store.ClearWaitingRoom();
        }

        private void btnAddOneHour_Click(object sender, EventArgs e)
        {
            store.AddTime(60);
        }

        private void trackBar1_Scroll(object sender, EventArgs e)
        {
            store.UpdateCheckoutNumber(trckCheckouts.Value,pbxCaisses.Size);
        }

        private void trckClients_Scroll(object sender, EventArgs e)
        {
            store.ChangeClientMultiplier(trckClients.Value);
        }

        private void trckCrossover_Scroll(object sender, EventArgs e)
        {
            store.ChangeCrossoverTime(trckCrossover.Value);
        }
    }
}