using System;
using System.Collections;
using System.Drawing;
using System.IO.Ports;
using System.Runtime.InteropServices;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace iClicker {
    class Program {
        static ArrayList[] answerLists = new ArrayList[5];
        static bool answerListsUpdated = true;
        static int mostAnswer;

        static NotifyIcon notifyIcon = new NotifyIcon();
        static bool consoleVisibility = true;
        static String channel = "#AA";
        static void Main(String[] args) {
            if (args.Length < 1) return;
            if (args.Length == 2) channel = "#" + args[1].ToUpper();

            for (int i = 0; i < 5; i++) answerLists[i] = new ArrayList();

            // notify icon menu
            notifyIcon.Visible = true;
            SetConsoleWindowVisibility(false);
            notifyIcon.DoubleClick += (s, e) => { consoleVisibility = !consoleVisibility; SetConsoleWindowVisibility(consoleVisibility); };
            var contextMenu = new ContextMenuStrip();
            contextMenu.Items.Add("Reset", null, (s, e) => { for (int i = 0; i < 5; i++) answerLists[i].Clear(); answerListsUpdated = true; });
            contextMenu.Items.Add("Exit", null, (s, e) => { Application.Exit(); });
            notifyIcon.ContextMenuStrip = contextMenu;

            SerialPort mySerialPort = new SerialPort(args[0].ToUpper());

            mySerialPort.BaudRate = 115200;
            mySerialPort.Parity = Parity.None;
            mySerialPort.StopBits = StopBits.One;
            mySerialPort.DataBits = 8;
            mySerialPort.Handshake = Handshake.None;
            mySerialPort.RtsEnable = true;
            mySerialPort.DataReceived += new SerialDataReceivedEventHandler(DataReceivedHandler);

            mySerialPort.Open();

            mySerialPort.WriteLine(channel);

            System.Timers.Timer timer = new System.Timers.Timer(1000);
            timer.Elapsed += async (sender, e) => await Task.Run(() => updateResult());
            timer.Start();

            Application.Run();
            mySerialPort.Close();
        }
        private static void DataReceivedHandler(object sender, SerialDataReceivedEventArgs e) {
            SerialPort sp = (SerialPort)sender;
            String indata = sp.ReadExisting();
            if (indata[0] == '$') { // received answer
                char ans = indata[1];
                String id = indata.Substring(2, 8);
                if (ans >= 'A' && ans <= 'E') {
                    for (int i = 0; i < 5; i++) answerLists[i].Remove(id);
                    answerLists[ans - 'A'].Add(id);
                    answerListsUpdated = true;
                }
            }
        }
        private static void updateResult() {
            if (!answerListsUpdated) return;
            Console.Clear();
            notifyIcon.Text = "";
            int total = answerLists[0].Count + answerLists[1].Count + answerLists[2].Count + answerLists[3].Count + answerLists[4].Count;
            if (total == 0) total = 1;

            mostAnswer = 0;
            for (int i = 1; i < 5; i++)
                if (answerLists[i].Count > answerLists[mostAnswer].Count) mostAnswer = i;

            for (int i = 0; i < 5; i++) {
                if (i == mostAnswer) Console.ForegroundColor = ConsoleColor.Red;
                Console.WriteLine("{0}: {1}\t{2} {3:F}%", (char)(i + 'A'), answerLists[i].Count, new String('▄', answerLists[i].Count * 50 / total), answerLists[i].Count * 100.0 / total);
                if (i == mostAnswer) Console.ForegroundColor = ConsoleColor.White;
            }

            for (int i = 0; i < 5; i++) {
                if (i == mostAnswer) notifyIcon.Text += String.Format(" - ");
                notifyIcon.Text += String.Format("{0}: {1:F}%\n", (char)(i + 'A'), answerLists[i].Count * 100.0 / total);
            }

            updateIcon(((char)(mostAnswer + 'A')).ToString(), answerLists[mostAnswer].Count * 100 / total + "%");

            answerListsUpdated = false;
        }
        public static void SetConsoleWindowVisibility(bool visible) {
            IntPtr hWnd = FindWindow(null, Console.Title);
            if (hWnd != IntPtr.Zero) {
                if (visible) ShowWindow(hWnd, 1); //1 = SW_SHOWNORMAL           
                else ShowWindow(hWnd, 0); //0 = SW_HIDE               
            }
        }

        public static void updateIcon(String line1, String line2) {
            Font line1Font = new Font("Arial Black", 128, FontStyle.Regular, GraphicsUnit.Pixel);
            Font line2Font = new Font("Arial Black", 104, FontStyle.Regular, GraphicsUnit.Pixel);
            Brush brushToUse = new SolidBrush(Color.White);
            Bitmap bitmapText = new Bitmap(256, 256);
            Graphics g = System.Drawing.Graphics.FromImage(bitmapText);

            IntPtr hIcon;

            g.Clear(Color.Transparent);
            g.TextRenderingHint = System.Drawing.Text.TextRenderingHint.SingleBitPerPixelGridFit;
            g.DrawString(line1, line1Font, brushToUse, 56, 0);
            g.DrawString(line2, line2Font, brushToUse, 0, 140);
            hIcon = (bitmapText.GetHicon());
            notifyIcon.Icon = System.Drawing.Icon.FromHandle(hIcon);
        }

        [DllImport("user32.dll")] public static extern IntPtr FindWindow(string lpClassName, string lpWindowName);
        [DllImport("user32.dll")] static extern bool ShowWindow(IntPtr hWnd, int nCmdShow);

    }
}