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

namespace Client
{
    public partial class Form1 : Form
    {
        // note !-> all the consts' values mean this.width (OR height) / value
        private const int ALLIGMENT_FROM_TOP = 20; // the alligment from the top of the screen
        private const int ALLIGMENT_FROM_LEFT = 20; // the alligment from the Left of the screen
        private const int LOG_IN_FORM_TXT_X_SIZE = 4; // the size of the text boxes in x axis which will be shown on the screen
        private const int LOG_IN_FORM_TEXT_SECTOR_HEIGHT = 2; // the height of the username password and email text boxes
        private const int LOG_IN_FORM_ALLGIMENT_FROM_TEXT_TO_LABEL = 50; // alligment from label to textbox
        private const int LOG_IN_FORM_PICBOX_HEIGHT = 4; // the height of the buttons (width / 4)
        private const int SIGN_OUT_FORM_BACK_HEIGHT_WIDTH = 6; // the height and width of the back button
        private const int CLOSE_GAME_BUTTON_WIDTH = 7; // the width of the close button
        private const int CLOSE_GAME_BUTTON_HEIGHT = 16; // the height of the close button
        private const int MAIN_FORM_PICBOX_HEIGHT = 10; // the height of the picture boxes in main form
        private const int MAIN_FORM_PICBOX_WIDTH = 5; // the width of the picture boxes in the main form
        private const int MAIN_FORM_LOG_OUT_HEIGHT = 12; // the height of the log out button
        private const int MAIN_FORM_LOG_OUT_WIDTH = 7; // the width of the log out button
        private const int BEST_SCORES_FORM_PB_HEIGHT = 4; // the height of the best scores pictures
        private const int BEST_SCORES_FORM_PB_WIDTH = 5; // the width of the best scores picture
        private const int JOIN_ROOM_FORM_ROOMS_LB_WIDTH = 4; // the width of the rooms list
        private const int JOIN_ROOM_FORM_USERS_LB_WIDTH = 5; // the width of the users list
        private const int JOIN_ROOM_FORM_BUTTON_SECTOR_Y = 4; // the height of the button sector
        private const int JOIN_ROOM_FORM_REFRESH_HEIGHT = 2; // the height of the refresh button
        private const int JOIN_ROOM_FORM_REFRESH_WIDTH = 8; // the width of the refresh button
        private const int JOIN_ROOM_FORM_JOIN_HEIGHT = 8; // the height of the join button
        private const int JOIN_ROOM_FORM_JOIN_WIDTH = 4; // the width of the join button

        private MyPictureBox PBClose; // the close button, <> needs to be disposed
        private Thread t; // Thread to handle messages from the server
        private Stream stream; // creates a connection with the server by ip and port
        private int alligmentFromSubjectY; // the alligment in y axis from the subject
        private string uid; // the username of the signed in user

        public Form1()
        {
            //this.stream = new Stream("127.0.0.1", 8686);

            //t = new Thread(handleMessage);
            //t.Start();

            InitializeComponent();

            this.Width = Screen.PrimaryScreen.Bounds.Width;
            this.Height = Screen.PrimaryScreen.Bounds.Height;

            InitStaticVars();
            InitJoinRoom(null, EventArgs.Empty);
            changeRoomsList(new List<string> { "tal", "Dolev", "I", "J", "K", "L", "M", "N" });
            changeUsersInRoom(new List<string> { "tal", "yarini" });
            changeRoomsList(new List<string> { "tal", "Dolev", "I", "J", "K", "L", "M", "N" });
            //InitPersonalStatus(null, EventArgs.Empty);
            //ChangePersonalStatus(new string[4] { "4", "10", "5", "3" });
            //InitLoginScreen(null, EventArgs.Empty);
            //InitSignUp(null, EventArgs.Empty);
            //InitMainScreen(null, EventArgs.Empty);
            //InitBestScores(null, EventArgs.Empty);
            //KeyValuePair<string, string>[] arr = new KeyValuePair<string, string>[3];
            //arr[0] = new KeyValuePair<string, string>("tal", "100");
            //arr[1] = new KeyValuePair<string, string>("Dolev", "0");
            //arr[2] = new KeyValuePair<string, string>("yarin", "10");
            //changeBestScores(arr);
            //CleanAllControlers();
        }

        /// <summary>
        /// initializes all static variables of custom classes, and current class
        /// </summary>
        public void InitStaticVars()
        {
            // MyTxtBox Class:
            // the default width of the text box
            MyTxtBox._width = (this.Width / LOG_IN_FORM_TXT_X_SIZE);

            // current class:
            // sets the close button
            PBClose = new MyPictureBox("PBClose", "close", new Size(this.Width / CLOSE_GAME_BUTTON_WIDTH, this.Height / CLOSE_GAME_BUTTON_HEIGHT));
            PBClose.Location = new Point(this.Width / 2 - PBClose.Width / 2, this.Height - PBClose.Height - this.Height / ALLIGMENT_FROM_TOP);
            PBClose.Click += PBClose_Click;
            this.Controls.Add(PBClose);

            // sets the alligment from top of screen
            alligmentFromSubjectY = this.Height / ALLIGMENT_FROM_TOP;

            uid = "tal";
        }

        /// <summary>
        /// makes the login is screen
        /// </summary>
        public void InitLoginScreen(object sender, EventArgs args)
        {
            int reminingY = this.Height;
            int nextYPos = 0;
            int xOfTextBoxes = 0;
            int sizeOfPictureBox = 0;
            int alligmentFromPictureBox = 0;
            int alligmentFromTextBoxes = 0;
            int alligmentFromTextBoxesToLabels = this.Width / LOG_IN_FORM_ALLGIMENT_FROM_TEXT_TO_LABEL;
            int xOfPicBoxes = 0;
            List<Control> cont = new List<Control>();

            // sets the background of the page
            this.BackgroundImage = Client.Properties.Resources.loginBG;

            // sets the color of the letters
            this.ForeColor = Color.White;

            // sets the subject label
            Label LBLSubject = new MyLabel("Please Log In", "LBLSubject"); // i create a label to know the width of its text
            LBLSubject.Location = new Point((this.Width / 2) - (LBLSubject.Width / 2), alligmentFromSubjectY);
            cont.Add(LBLSubject);

            nextYPos = LBLSubject.Location.Y + alligmentFromSubjectY + LBLSubject.Height; // begining of details section
            reminingY -= nextYPos; // sets the space of details section

            // sets the text box of username
            TextBox TXTuserName = new MyTxtBox("TXTusername"); // i create a label to know the height of its font
            alligmentFromTextBoxes = ((reminingY / LOG_IN_FORM_TEXT_SECTOR_HEIGHT) - (TXTuserName.Height * 2)) / 3; // generates the needed alligment
            nextYPos += alligmentFromTextBoxes;
            reminingY -= reminingY / LOG_IN_FORM_TEXT_SECTOR_HEIGHT; // sets the space of buttons section

            TXTuserName.Location = new Point((this.Width / 2) - (TXTuserName.Width / 2), nextYPos);
            cont.Add(TXTuserName);

            // sets the label of username
            Label LBLusername = new MyLabel("UserName: ", "LBLusername"); // sets the label of the userName
            LBLusername.Location = new Point(TXTuserName.Location.X - LBLusername.Width - alligmentFromTextBoxesToLabels, nextYPos);
            cont.Add(LBLusername);

            nextYPos += (TXTuserName.Height + alligmentFromTextBoxes); // sets the position of the next textBox
            xOfTextBoxes = TXTuserName.Location.X;

            // sets the text box of password
            TextBox TXTpsw = new MyTxtBox(new Point(xOfTextBoxes, nextYPos), "TXTpsw");
            cont.Add(TXTpsw);

            // sets the label of password
            Label LBLpsw = new MyLabel("password: ", "LBLpsw"); // sets the password label
            LBLpsw.Location = new Point(xOfTextBoxes - LBLpsw.Width - alligmentFromTextBoxesToLabels, nextYPos);
            cont.Add(LBLpsw);

            nextYPos += (TXTuserName.Height + alligmentFromTextBoxes); // sets the begining of the buttons sector

            // sets the buttons section
            sizeOfPictureBox = reminingY / LOG_IN_FORM_PICBOX_HEIGHT;
            reminingY -= (sizeOfPictureBox * 2);
            alligmentFromPictureBox = reminingY / 2;

            // sets the sign in button
            PictureBox PBSignIn = new MyPictureBox("PBSignIn", "SignIn", new Size(TXTuserName.Width, sizeOfPictureBox));
            xOfPicBoxes = (this.Width / 2) - (PBSignIn.Width / 2); // sets the x of picture boxes
            PBSignIn.Location = new Point(xOfPicBoxes, nextYPos);
            PBSignIn.Click += (EventHandler)PBSign_In_Click;
            cont.Add(PBSignIn);

            nextYPos += alligmentFromPictureBox;

            // sets the signup button
            PictureBox PBSignUp = new MyPictureBox("PBSignUp", "SignUp", new Size(PBSignIn.Width, sizeOfPictureBox));
            PBSignUp.Location = new Point(xOfPicBoxes, nextYPos);
            PBSignUp.Click += (EventHandler)(CleanAllControlers);
            PBSignUp.Click += (EventHandler)InitSignUp;
            cont.Add(PBSignUp);

            this.Controls.AddRange(cont.ToArray());
        }

        /// <summary>
        /// sets the form to be sign up page
        /// </summary>
        public void InitSignUp(object sender, EventArgs args)
        {
            int reminingY = this.Height;
            int nextYPos = 0;
            int xOfTextBoxes = 0;
            int sizeOfPictureBox = 0;
            int alligmentFromPictureBox = 0;
            int alligmentFromTextBoxes = 0;
            int alligmentFromTextBoxesToLabels = this.Width / LOG_IN_FORM_ALLGIMENT_FROM_TEXT_TO_LABEL;
            int xOfPicBoxes = 0;
            List<Control> cont = new List<Control>();

            // sets the background
            this.BackgroundImage = Properties.Resources.signUpBG;

            // sets the color of the letters
            this.ForeColor = Color.Black;

            // sets the subject label
            Label LBLSubject = new MyLabel("Please Sign Up", "LBLSubject"); // i create a label to know the width of its text
            LBLSubject.Location = new Point((this.Width / 2) - (LBLSubject.Width / 2), alligmentFromSubjectY);
            cont.Add(LBLSubject);

            nextYPos = LBLSubject.Location.Y + alligmentFromSubjectY + LBLSubject.Height; // begining of details section
            reminingY -= nextYPos; // sets the space of details section

            // sets the text box of username
            TextBox TXTuserName = new MyTxtBox("TXTusername"); // i create a label to know the height of its font
            alligmentFromTextBoxes = ((reminingY / LOG_IN_FORM_TEXT_SECTOR_HEIGHT) - (TXTuserName.Height * 3)) / 4; // generates the needed alligment
            nextYPos += alligmentFromTextBoxes;
            reminingY -= reminingY / LOG_IN_FORM_TEXT_SECTOR_HEIGHT; // sets the space of buttons section

            TXTuserName.Location = new Point((this.Width / 2) - (TXTuserName.Width / 2), nextYPos);
            cont.Add(TXTuserName);

            // sets the label of username
            Label LBLusername = new MyLabel("UserName: ", "LBLusername"); // sets the label of the userName
            LBLusername.Location = new Point(TXTuserName.Location.X - LBLusername.Width - alligmentFromTextBoxesToLabels, nextYPos);
            cont.Add(LBLusername);

            nextYPos += (TXTuserName.Height + alligmentFromTextBoxes); // sets the position of the next textBox
            xOfTextBoxes = TXTuserName.Location.X;

            // sets the text box of password
            TextBox TXTpsw = new MyTxtBox(new Point(xOfTextBoxes, nextYPos), "TXTpsw");
            cont.Add(TXTpsw);

            // sets the label of password
            Label LBLpsw = new MyLabel("password: ", "LBLpsw"); // sets the password label
            LBLpsw.Location = new Point(xOfTextBoxes - LBLpsw.Width - alligmentFromTextBoxesToLabels, nextYPos);
            cont.Add(LBLpsw);

            nextYPos += (TXTuserName.Height + alligmentFromTextBoxes); // sets the position of the next textBox

            // sets the text box of email
            TextBox TXTemail = new MyTxtBox(new Point(xOfTextBoxes, nextYPos), "TXTemail");
            cont.Add(TXTemail);

            // sets the label of email
            Label LBLemail = new MyLabel("email: ", "LBLemail");
            LBLemail.Location = new Point(xOfTextBoxes - LBLemail.Width - alligmentFromTextBoxesToLabels, nextYPos);
            cont.Add(LBLemail);

            nextYPos += (TXTuserName.Height + alligmentFromTextBoxes); // sets the begining of the buttons sector

            // sets the buttons section
            sizeOfPictureBox = reminingY / LOG_IN_FORM_PICBOX_HEIGHT;
            reminingY -= (sizeOfPictureBox * 2);
            alligmentFromPictureBox = reminingY / 2;

            // sets the sign up button
            PictureBox PBSignUp = new MyPictureBox("PBSignUp", "SignUp", new Size(TXTemail.Width, sizeOfPictureBox));
            xOfPicBoxes = (this.Width / 2) - (PBSignUp.Width / 2); // sets the x of picture boxes
            PBSignUp.Location = new Point(xOfPicBoxes, nextYPos);
            PBSignUp.Click += (EventHandler)PBSign_Up_Click;
            //PBSignUp.Click += (EventHandler)CleanAllControlers;
            cont.Add(PBSignUp);

            // sets the back button
            int PCHeight = this.Height / SIGN_OUT_FORM_BACK_HEIGHT_WIDTH;
            int PCWidth = this.Width / SIGN_OUT_FORM_BACK_HEIGHT_WIDTH;
            PictureBox PBBack = new MyPictureBox("PBBack", "back", new Size(PCWidth, PCHeight));
            PBBack.Location = new Point(this.Width - PCWidth, this.Height / ALLIGMENT_FROM_TOP);
            PBBack.Click += (EventHandler)CleanAllControlers;
            PBBack.Click += (EventHandler)InitLoginScreen;
            cont.Add(PBBack);

            this.Controls.AddRange(cont.ToArray());
        }

        /// <summary>
        /// builds the main screen
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="args"></param>
        public void InitMainScreen(object sender, EventArgs args)
        {
            int nextYPos = 0;
            int reminingY = PBClose.Location.Y;
            int heightOfPB = this.Height / MAIN_FORM_PICBOX_HEIGHT;
            int widthOfPB = this.Width / MAIN_FORM_PICBOX_WIDTH;
            int alligmentFromButtonsY = 0;
            int alligmentFromButtonsX = 0;

            // sets the background of the screen
            this.BackgroundImage = Properties.Resources.mainScreenBG;

            // sets the font color to black
            this.ForeColor = Color.Black;

            // sets the subject label
            Label LBLSubject = new MyLabel("Hello " + uid, "LBLSubject"); // i create a label to know the width of its text
            LBLSubject.Location = new Point((this.Width / 2) - (LBLSubject.Width / 2), alligmentFromSubjectY);
            this.Controls.Add(LBLSubject);

            // configures all the propeties needed for the button
            nextYPos = LBLSubject.Location.Y + alligmentFromSubjectY;
            reminingY -= (nextYPos - heightOfPB * 2);
            alligmentFromButtonsY = reminingY / 3;
            nextYPos += (alligmentFromButtonsY / 2);
            alligmentFromButtonsX = (this.Width - widthOfPB * 3) / 3;

            // sets the Join room button
            Button BTNJoin = new MyButton("BTNJoin", new Size(widthOfPB, heightOfPB), "Join Room");
            BTNJoin.Location = new Point(alligmentFromButtonsX, nextYPos);
            this.Controls.Add(BTNJoin);

            // sets the Create room button
            Button BTNCreate = new MyButton("BTNCreate", new Size(widthOfPB, heightOfPB), "Create Room");
            BTNCreate.Location = new Point(this.Width - widthOfPB - alligmentFromButtonsX, nextYPos);
            this.Controls.Add(BTNCreate);

            nextYPos += alligmentFromButtonsY;

            // sets the best scores button
            Button BTNBest = new MyButton("BTNBest", new Size(widthOfPB, heightOfPB), "Best Scores");
            BTNBest.Location = new Point(alligmentFromButtonsX, nextYPos);
            BTNBest.Click += (EventHandler)CleanAllControlers;
            BTNBest.Click += (EventHandler)InitBestScores;
            BTNBest.Click += (EventHandler)BTNBest_Click;
            this.Controls.Add(BTNBest);

            // sets the personal status
            Button BTNPersonal = new MyButton("BTNPersonal", new Size(widthOfPB, heightOfPB), "My Status");
            BTNPersonal.Location = new Point(this.Width - widthOfPB - alligmentFromButtonsX, nextYPos);
            BTNPersonal.Click += (EventHandler)CleanAllControlers;
            BTNPersonal.Click += (EventHandler)InitPersonalStatus;
            this.Controls.Add(BTNPersonal);

            // sets the logout button
            PictureBox PBLogOut = new MyPictureBox("PBLogOut", "signOut", new Size(this.Height / MAIN_FORM_LOG_OUT_WIDTH, this.Width / MAIN_FORM_LOG_OUT_HEIGHT));
            PBLogOut.Location = new Point(this.Width / ALLIGMENT_FROM_LEFT, this.Height / ALLIGMENT_FROM_TOP);
            PBLogOut.Click += (EventHandler)CleanAllControlers;
            PBLogOut.Click += (EventHandler)InitLoginScreen;
            PBLogOut.Click += (EventHandler)PBLogOut_Click;
            this.Controls.Add(PBLogOut);
        }

        /// <summary>
        /// inits the join room screen
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="args"></param>
        private void InitJoinRoom(object sender, EventArgs args)
        {
            int nextYPos = 0;
            int alligmentFromClose = this.Height - this.PBClose.Location.Y - this.PBClose.Height;
            int alligmentFromButtonsY = 0;
            int alligmentFromButtonsX = 0;
            int buttonSectorY = 0;
            int alligmentFromListsX = 0;
            int refreshY = 0;
            int joinY = 0;
            int reminingY = this.PBClose.Location.Y;

            // sets the form to join room bg
            this.BackgroundImage = Properties.Resources.joinRoomBG;

            // changes the fore color to black
            this.ForeColor = Color.Black;

            // sets the subject label
            Label LBLSubject = new MyLabel("Choose Room", "LBLSubject"); // i create a label to know the width of its text
            LBLSubject.Location = new Point((this.Width / 2) - (LBLSubject.Width / 2), alligmentFromSubjectY);
            this.Controls.Add(LBLSubject);

            nextYPos = LBLSubject.Location.Y + LBLSubject.Height + alligmentFromSubjectY;
            reminingY -= nextYPos;

            // configures the button sector properties
            buttonSectorY = reminingY / JOIN_ROOM_FORM_BUTTON_SECTOR_Y;
            refreshY = buttonSectorY / JOIN_ROOM_FORM_REFRESH_HEIGHT;
            joinY = buttonSectorY / JOIN_ROOM_FORM_JOIN_HEIGHT;
            alligmentFromButtonsY = (buttonSectorY - refreshY - joinY) / 2;
            alligmentFromButtonsX = (this.Width - this.Width / JOIN_ROOM_FORM_REFRESH_WIDTH - this.Width / JOIN_ROOM_FORM_JOIN_WIDTH) / 3;

            // configures and adds the refresh button
            PictureBox PBRefresh = new MyPictureBox("PBRefresh", "refresh", new Size(this.Width / JOIN_ROOM_FORM_REFRESH_WIDTH, refreshY));
            PBRefresh.Location = new Point(alligmentFromButtonsX, PBClose.Location.Y - alligmentFromButtonsY - refreshY);
            PBRefresh.Click += (EventHandler)PBRefresh_Click;
            this.Controls.Add(PBRefresh);

            // configures and adds the join button
            PictureBox PBJoin = new MyPictureBox("PBJoin", "joinBTN", new Size(this.Width / JOIN_ROOM_FORM_JOIN_WIDTH, this.Height / JOIN_ROOM_FORM_JOIN_HEIGHT));
            PBJoin.Location = new Point(this.Width - PBJoin.Width - alligmentFromButtonsX, PBRefresh.Location.Y);
            PBJoin.Click += (EventHandler)PBJoin_Click;
            this.Controls.Add(PBJoin);

            reminingY = PBRefresh.Location.Y - LBLSubject.Location.Y - LBLSubject.Height - alligmentFromSubjectY;
            ListBox LBRooms = new MyListBox("LBRooms", new Size(this.Width / JOIN_ROOM_FORM_ROOMS_LB_WIDTH, reminingY / 4));
            ListBox LBUsers = new MyListBox("LBUsers", new Size(this.Width / JOIN_ROOM_FORM_USERS_LB_WIDTH, reminingY / 4));

            alligmentFromListsX = (this.Width - LBRooms.Width - LBUsers.Width) / 3;

            Label LBLRooms = new MyLabel("Rooms:", "LBLRooms");
            Label LBLUsers = new MyLabel("Users:", "LBLUsers");

            // adds the rooms list box
            LBRooms.Location = new Point(this.Width / 2 - LBRooms.Width / 2, nextYPos + LBLRooms.Height);
            this.Controls.Add(LBRooms);

            // sets the users list box
            LBUsers.Location = new Point(alligmentFromListsX, nextYPos + LBLUsers.Height);
            LBUsers.Visible = false;
            this.Controls.Add((LBUsers));

            // configures and adds the label of rooms
            LBLRooms.Location = new Point(LBRooms.Location.X + LBRooms.Width / 2 - LBLRooms.Width / 2, nextYPos);
            this.Controls.Add(LBLRooms);

            // configures and adds the label of users
            LBLUsers.Location = new Point(LBUsers.Location.X + LBUsers.Width / 2 - LBLRooms.Width / 2, nextYPos);
            LBLUsers.Visible = false;
            this.Controls.Add(LBLUsers);
        }

        /// <summary>
        /// changes the room list in the join room form
        /// should be called when the join room button or refresh button were clicked
        /// </summary>
        /// <param name="roomsNames">the names of the rooms that will be shown on the list box</param>
        private void changeRoomsList(List<string> roomsNames)
        {
            if (roomsNames.Count < 1) // so that the list will still be shown even if there are no available rooms
            {
                roomsNames.Add("");
            }

            ListBox LBUsers = this.Controls.Find("LBUsers", false).FirstOrDefault() as ListBox;
            Label LBLUsers = this.Controls.Find("LBLUsers", false).FirstOrDefault() as Label;

            // makes the users lists to disapear
            LBUsers.Visible = false;
            LBLUsers.Visible = false;

            ListBox LBRooms = this.Controls.Find("LBRooms", false).FirstOrDefault() as ListBox;
            if (LBRooms != null)
            {
                LBRooms.Items.Clear();
                foreach (string name in roomsNames)
                {
                    LBRooms.Items.Add(name);
                }

                Label LBLRooms = this.Controls.Find("LBLRooms", false).FirstOrDefault() as Label;
                PictureBox PBRefresh = this.Controls.Find("PBRefresh", false).FirstOrDefault() as PictureBox;

                // sets the height of the list box
                if (LBLRooms != null && PBRefresh != null)
                {
                    int maxHeight = PBRefresh.Location.Y - LBLRooms.Location.Y - LBLRooms.Height - alligmentFromSubjectY;
                    int height = TextRenderer.MeasureText("k", LBRooms.Font).Height;
                    int maxObj = maxHeight / height;

                    LBRooms.Height = roomsNames.Count > maxObj ? height * maxObj : roomsNames.Count * height;
                }

                // moves the list box to its proper place
                LBRooms.Location = new Point(this.Width / 2 - LBRooms.Width / 2, LBRooms.Location.Y);
                LBLRooms.Location = new Point(LBRooms.Location.X + LBRooms.Width / 2 - LBLRooms.Width / 2, LBLRooms.Location.Y);

                this.Update();
            }
        }

        /// <summary>
        /// changes the users in room list box
        /// should be called when an item on the rooms list is clicked
        /// </summary>
        /// <param name="users">the users that will be presented on the users list</param>
        private void changeUsersInRoom(List<string> users)
        {
            if(users.Count < 1)
            {
                users.Add("");
            }

            ListBox LBUsers = this.Controls.Find("LBUsers", false).FirstOrDefault() as ListBox;
            Label LBLUsers = this.Controls.Find("LBLUsers", false).FirstOrDefault() as Label;
            Label LBLRooms = this.Controls.Find("LBLRooms", false).FirstOrDefault() as Label;
            PictureBox PBRefresh = this.Controls.Find("PBRefresh", false).FirstOrDefault() as PictureBox;
            ListBox LBRooms = this.Controls.Find("LBRooms", false).FirstOrDefault() as ListBox;

            // sets the height of the list box
            if (LBLUsers != null && PBRefresh != null && LBUsers != null)
            {
                int maxHeight = PBRefresh.Location.Y - LBLUsers.Location.Y - LBLUsers.Height - alligmentFromSubjectY;
                int height = TextRenderer.MeasureText("k", LBUsers.Font).Height;
                int maxObj = maxHeight / height;

                // changes the items in the list box
                LBUsers.Items.Clear();
                foreach(string user in users)
                {
                    LBUsers.Items.Add(user);
                }

                LBUsers.Height = users.Count > maxObj ? height * maxObj : users.Count * height;

                // sets the rooms stuff to their proper place
                LBRooms.Location = new Point(this.Width - LBRooms.Width - LBUsers.Location.X, LBRooms.Location.Y);
                LBLRooms.Location = new Point(LBRooms.Location.X + LBRooms.Width / 2 - LBLRooms.Width / 2, LBLRooms.Location.Y);

                LBUsers.Visible = true;
                LBLUsers.Visible = true;

                this.Update();
            }
        }

        /// <summary>
        /// changes the form to personal status
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="args"></param>
        private void InitPersonalStatus(object sender, EventArgs args)
        {
            int reminingY = this.PBClose.Location.Y;
            int nextYPos = 0;
            int alligmentFromLabelsY = 0;

            // sets the background of the form to personal status background
            this.BackgroundImage = Properties.Resources.personalStatusBG;

            // sets the font of the form to black
            this.ForeColor = Color.Black;

            // sets the subject label
            Label LBLSubject = new MyLabel("My Performance: ", "LBLSubject"); // i create a label to know the width of its text
            LBLSubject.Location = new Point((this.Width / 2) - (LBLSubject.Width / 2), alligmentFromSubjectY);
            this.Controls.Add(LBLSubject);

            nextYPos = LBLSubject.Location.Y + LBLSubject.Height + alligmentFromSubjectY;
            reminingY -= nextYPos;

            Label LBLnumOfGames = new MyLabel("number of Games: ", "LBLnumOfGames"); // i create a label so i can know the height of it

            alligmentFromLabelsY = (reminingY - LBLnumOfGames.Height * 4) / 5;
            nextYPos += alligmentFromLabelsY;

            // configures and adds the number of games label
            LBLnumOfGames.Location = new Point(0, nextYPos); // i put 0 in x of all labels because i change it to the middle when the real text arrives from server
            this.Controls.Add(LBLnumOfGames);

            nextYPos += alligmentFromLabelsY;

            // configures and adds the number of right answers label
            Label LBLnumOfRightAns = new MyLabel("number of right answers: ", "LBLnumOfRightAns");
            LBLnumOfRightAns.Location = new Point(0, nextYPos);
            this.Controls.Add(LBLnumOfRightAns);

            nextYPos += alligmentFromLabelsY;

            // configures and adds the number of wrong answers label
            Label LBLnumOfWrongAns = new MyLabel("number of wrong answers: ", "LBLnumOfWrongAns");
            LBLnumOfWrongAns.Location = new Point(0, nextYPos);
            this.Controls.Add(LBLnumOfWrongAns);

            nextYPos += alligmentFromLabelsY;

            // configures and adds the average time per answer
            Label LBLavgTimePerAns = new MyLabel("average time for answer: ", "LBLavgTimePerAns");
            LBLavgTimePerAns.Location = new Point(0, nextYPos);
            this.Controls.Add(LBLavgTimePerAns);

            // sets the back button
            int PCHeight = this.Height / SIGN_OUT_FORM_BACK_HEIGHT_WIDTH;
            int PCWidth = this.Width / SIGN_OUT_FORM_BACK_HEIGHT_WIDTH;
            PictureBox PBBack = new MyPictureBox("PBBack", "back", new Size(PCWidth, PCHeight));
            PBBack.Location = new Point(this.Width - PCWidth, this.Height / ALLIGMENT_FROM_TOP);
            PBBack.Click += (EventHandler)CleanAllControlers;
            PBBack.Click += (EventHandler)InitMainScreen;
            this.Controls.Add(PBBack);
        }

        /// <summary>
        /// changes the labels of personal status' form, has to be be used after InitPersonalStatus function used
        /// </summary>
        /// <param name="arr">an array that contains the values of the fields example { 4, 5, 10, 3 }</param>
        private void ChangePersonalStatus(string[] arr)
        {
            if(arr.Length > 3)
            {
                Label[] labels = new Label[4];
                labels[0] = this.Controls.Find("LBLnumOfGames", false).FirstOrDefault() as Label;
                labels[1] = this.Controls.Find("LBLnumOfRightAns", false).FirstOrDefault() as Label;
                labels[2] = this.Controls.Find("LBLnumOfWrongAns", false).FirstOrDefault() as Label;
                labels[3] = this.Controls.Find("LBLavgTimePerAns", false).FirstOrDefault() as Label;

                for(int i = 0; i < 4; i++)
                {
                    if(labels[i] != null)
                    {
                        labels[i].Text += arr[i];
                        labels[i].Width = TextRenderer.MeasureText(labels[i].Text, labels[i].Font).Width;
                        labels[i].Location = new Point(this.Width / 2 - labels[i].Width / 2, labels[i].Location.Y);
                    }
                }
            }
        }

        /// <summary>
        /// changes the form to show the best scores
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="args"></param>
        private void InitBestScores(object sender, EventArgs args)
        {
            int reminingY = PBClose.Location.Y;
            int nextYPos = 0;
            int pictureBoxHeight = 0;
            int pictureBoxWidth = 0;
            int alligmentFromPicturesY = 0;
            int alligmentFromPictureX = 0;

            // sets the background image to best scores BG
            this.BackgroundImage = Properties.Resources.winners;

            // sets the font of the form to black
            this.ForeColor = Color.Black;

            // sets the subject label
            Label LBLSubject = new MyLabel("Best Scores: ", "LBLSubject"); // i create a label to know the width of its text
            LBLSubject.Location = new Point((this.Width / 2) - (LBLSubject.Width / 2), alligmentFromSubjectY);
            this.Controls.Add(LBLSubject);

            // creates the label that contains the first player's scores
            Label LBL1st = new MyLabel("ABCD", "LBL1st"); // i put text in the label so i can know its properties

            // sets the next position for the picture boxes sector
            nextYPos += (LBLSubject.Location.Y + LBLSubject.Height + alligmentFromSubjectY);
            reminingY -= nextYPos;

            // configures the properties of the picture boxes
            pictureBoxHeight = reminingY / BEST_SCORES_FORM_PB_HEIGHT;
            pictureBoxWidth = this.Width / BEST_SCORES_FORM_PB_WIDTH;

            // configures the picture box sector
            alligmentFromPicturesY = (reminingY - pictureBoxHeight * 2 - LBL1st.Height * 2) / 2;
            alligmentFromPictureX = (this.Width - pictureBoxWidth * 3) / 4;
            nextYPos += alligmentFromPicturesY;

            // sets the first place picture box
            PictureBox PB1st = new MyPictureBox("PB1st", "_1st", new Size(pictureBoxWidth, pictureBoxHeight));
            PB1st.Location = new Point(alligmentFromPictureX * 2 + pictureBoxWidth, nextYPos);
            this.Controls.Add(PB1st);

            LBL1st.Location = new Point(PB1st.Location.X + PB1st.Width / 2, nextYPos - LBL1st.Height);
            this.Controls.Add(LBL1st);

            // sets the postion to the next picture box
            nextYPos += alligmentFromPicturesY;

            // sets the second best score picture box
            PictureBox PB2nd = new MyPictureBox("PB2nd", "_2nd", new Size(pictureBoxWidth, pictureBoxHeight));
            PB2nd.Location = new Point(alligmentFromPictureX, nextYPos);
            this.Controls.Add(PB2nd);

            // sets the label of the second best score
            Label LBL2nd = new MyLabel("ABCD", "LBL2nd"); // i put text in the label so i can know its properties
            LBL2nd.Location = new Point(PB2nd.Location.X + PB2nd.Width / 2, PB2nd.Location.Y - LBL2nd.Height);
            this.Controls.Add(LBL2nd);

            // sets the picture box of the second best score
            PictureBox PB3rd = new MyPictureBox("PB3rd", "_3rd", new Size(pictureBoxWidth, pictureBoxHeight));
            PB3rd.Location = new Point(this.Width - alligmentFromPictureX - PB3rd.Width, nextYPos);
            this.Controls.Add(PB3rd);

            // sets the label of th ethird best score
            Label LBL3rd = new MyLabel("ABCD", "LBL3rd"); // i put text in the label so i can know its properties
            LBL3rd.Location = new Point(PB3rd.Location.X + PB3rd.Width / 2, nextYPos - LBL3rd.Height);
            this.Controls.Add(LBL3rd);

            // sets the back button
            int PCHeight = this.Height / SIGN_OUT_FORM_BACK_HEIGHT_WIDTH;
            int PCWidth = this.Width / SIGN_OUT_FORM_BACK_HEIGHT_WIDTH;
            PictureBox PBBack = new MyPictureBox("PBBack", "back", new Size(PCWidth, PCHeight));
            PBBack.Location = new Point(this.Width - PCWidth, this.Height / ALLIGMENT_FROM_TOP);
            PBBack.Click += (EventHandler)CleanAllControlers;
            PBBack.Click += (EventHandler)InitMainScreen;
            this.Controls.Add(PBBack);
        }

        /// <summary>
        /// changes the best scores labels
        /// should be used when clicked on get best scores button, after InitBestScores was called
        /// </summary>
        /// <param name="arr">an array of pairs in which the key is the name of the user and the value is his score</param>
        private void changeBestScores(KeyValuePair<string, string>[] arr)
        {
            Label[] labels = new Label[3];

            labels[0] = this.Controls.Find("LBL1st", false).FirstOrDefault() as Label;
            labels[1] = this.Controls.Find("LBL2nd", false).FirstOrDefault() as Label;
            labels[2] = this.Controls.Find("LBL3rd", false).FirstOrDefault() as Label;

            for (int i = 0; i < 3; i++ )
            {
                if(labels[i] != null)
                {
                    labels[i].Text = arr[i].Key + ": " + arr[i].Value;
                    labels[i].Width = TextRenderer.MeasureText(labels[i].Text, labels[i].Font).Width;
                    labels[i].Location = new Point(labels[i].Location.X - labels[i].Width / 2, labels[i].Location.Y);
                }
            }
        }

        /// <summary>
        /// cleans the screen from all the controls on it
        /// </summary>
        private void CleanAllControlers(object sender, EventArgs args)
        {
            //foreach (Control c in this.Controls)
            //{
            //    MessageBox.Show(c.GetType().ToString());
            //    this.Controls.Remove(c);
            //}

            this.Controls.Clear();
            this.Controls.Add(PBClose);
        }

        private void PBClose_Click(object sender, EventArgs args)
        {
            this.Close();
        }

        private void BTNBest_Click(object sender, EventArgs args)
        {
            // ... executed when best scores button clicked
        }

        private void PBLogOut_Click(object sender, EventArgs args)
        {
            // ... executed when log out button is clicked
        }

        private void PBRefresh_Click(object sender, EventArgs args)
        {
            // .. executed when refresh button is clicked
        }

        private void PBJoin_Click(object sender, EventArgs args)
        {
            //... executed when join button clicked (on join rooms form)
        }

        /// <summary>
        /// sends the username, password and email to server according to the format for sign up
        /// </summary>
        private void PBSign_Up_Click(object sender, EventArgs args)
        {
            TextBox txtUserName = (TextBox)this.Controls.Find("TXTusername", false)[0];
            TextBox txtPassword = (TextBox)this.Controls.Find("TXTpsw", false)[0];
            TextBox txtEmail = (TextBox)this.Controls.Find("TXTemail", false)[0];

            if (txtUserName != null && txtPassword != null && txtEmail != null)
            {
                this.stream.sendData(String.Format("203{0:00}{1}{2:00}{3}{4:00}{5}", txtUserName.Text.Length, txtUserName.Text, txtPassword.Text.Length, txtPassword.Text, txtEmail.Text.Length, txtEmail.Text));
            }
        }

        /// <summary>
        /// sends the username and password to server according to the format for sign in
        /// </summary>
        private void PBSign_In_Click(object sender, EventArgs e)
        {
            TextBox txtUserName = (TextBox)this.Controls.Find("TXTusername", false)[0];
            TextBox txtPassword = (TextBox)this.Controls.Find("TXTpsw", false)[0];

            if (txtUserName != null && txtPassword != null)
            {
                this.stream.sendData(String.Format("200{0:00}{1}{2:00}{3}", txtUserName.Text.Length, txtUserName.Text, txtPassword.Text.Length, txtPassword.Text));
            }
        }

        private void handleMessage()
        {
            string msg = "";
            while (true)
            {
                msg = this.stream.recvData();

                switch (int.Parse(msg))
                {
                    case 1020:
                        MessageBox.Show("Success Sign in");
                        uid = ((TextBox)this.Controls.Find("TXTusername", false)[0]).Text;
                        Invoke((MethodInvoker) (() => CleanAllControlers(null, EventArgs.Empty)));
                        Invoke((MethodInvoker) (() => InitMainScreen(null, EventArgs.Empty)));
                        break;
                    case 1021:
                        MessageBox.Show("Wrong Details Sign in");
                        break;
                    case 1022:
                        MessageBox.Show("User is already connected Sign in");
                        break;
                    case 1040:
                        MessageBox.Show("Success Sign up");
                        Invoke((MethodInvoker) (() => CleanAllControlers(null, EventArgs.Empty)));
                        Invoke((MethodInvoker) (() => this.InitLoginScreen(null, EventArgs.Empty)));
                        break;
                    case 1041:
                        MessageBox.Show("WPass illegal Sign up");
                        break;
                    case 1042:
                        MessageBox.Show("Username is already exists Sign up");
                        break;
                    case 1043:
                        MessageBox.Show("Username is illegal Sign up");
                        break;
                    case 1044:
                        MessageBox.Show("Other Sign up");
                        break;
                }
            }
        }

        private void Form1_FormClosing(object sender, FormClosingEventArgs e)
        {
            //this.t.Abort();
            //this.stream.sendData("299");
            //this.stream.CloseStream();
            this.PBClose.Dispose();
        }
    }
}


// TODO:
// set font according to resulution
// remove the size of the Close button from the login and signup pages