using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Graphics;
using Microsoft.Xna.Framework.Input;
using Microsoft.Xna.Framework.Content;

using GalacticSharp_Client.Modules.GUI;
using GalacticSharp_Client.Modules;
using Lidgren.Network;

namespace GalacticSharp_Client
{
    class MainMenu
    {
        string tmpUsername = string.Empty;
        // GameState..
        enum GameState
        {
            mainMenu,
            Login,
            Register,
            CreateChar,
            inGame,
        }

        GameState gameState;

        // GUI Work
        List<GUIElement> main = new List<GUIElement>();
        List<GUIElement> login = new List<GUIElement>();
        List<GUIElement> register = new List<GUIElement>();
        List<GUIElement> createChar = new List<GUIElement>();

        // GUITextbox's
        GUITextbox loginUsername = new GUITextbox("GUI/textbox");
        GUITextbox loginPassword = new GUITextbox("GUI/textbox");

        GUITextbox registerUsername = new GUITextbox("GUI/textbox");
        GUITextbox registerPassword = new GUITextbox("GUI/textbox");
        GUITextbox registerConfPassword = new GUITextbox("GUI/textbox");

        GUITextbox charName = new GUITextbox("GUI/textbox");

        private Keys[] lastPressedKeys = new Keys[5];

        private string myName = string.Empty;
        private SpriteFont font;

        Game1 game;

        // Constructor
        public MainMenu(Game1 game)
        {
            main.Add(new GUIElement("GUI/menu"));
            main.Add(new GUIElement("GUI/play"));
            main.Add(new GUIElement("GUI/nameBtn"));
            main.Add(new GUIElement("GUI/exit"));

            login.Add(new GUIElement("GUI/name"));
            login.Add(new GUIElement("GUI/done"));

            register.Add(new GUIElement("GUI/name"));
            register.Add(new GUIElement("GUI/doneRegister"));

            createChar.Add(new GUIElement("GUI/name"));
            createChar.Add(new GUIElement("GUI/charAccept"));

            this.game = game;
        }

        // Load our content
        public void LoadContent(ContentManager content)
        {
            // Loop through all the elements in main and load them, centre them, and add the events
            foreach(GUIElement element in main)
            {
                element.LoadContent(content);
                element.CentreElement(800, 600);
                element.clickEvent += OnClick;
            }
            // Move some elements
            main.Find(x => x.AssetName == "GUI/play").MoveElement(0, -125);
            main.Find(x => x.AssetName == "GUI/nameBtn").MoveElement(0, -92);
            main.Find(x => x.AssetName == "GUI/exit").MoveElement(0, -59);

            // Loop through all the elements in login and load them, centre them, and add the events
            foreach(GUIElement element in login)
            {
                element.LoadContent(content);
                element.CentreElement(800, 600);
                element.clickEvent += OnClick;
            }
            // Move the done button
            login.Find(x => x.AssetName == "GUI/done").MoveElement(0, 60);

            // Loop through all the elements in register and load them, centre them, and add the events
            foreach(GUIElement element in register)
            {
                element.LoadContent(content);
                element.CentreElement(800, 600);
                element.clickEvent += OnClick;
            }
            // Move the done button
            register.Find(x => x.AssetName == "GUI/doneRegister").MoveElement(0, 60);

            foreach(GUIElement element in createChar)
            {
                element.LoadContent(content);
                element.CentreElement(800, 600);
                element.clickEvent += OnClick;
            }
            // Move the done button
            createChar.Find(x => x.AssetName == "GUI/charAccept").MoveElement(0, 60);

            // Load our font!
            font = content.Load<SpriteFont>("GUI/MyFont");

            // Load, centre, and move our textboxes!
            loginUsername.LoadContent(content);
            loginUsername.element.CentreElement(800, 600);
            loginUsername.element.MoveElement(60, -65);

            loginPassword.LoadContent(content);
            loginPassword.element.CentreElement(800, 600);
            loginPassword.element.MoveElement(60, -35);

            registerUsername.LoadContent(content);
            registerUsername.element.CentreElement(800, 600);
            registerUsername.element.MoveElement(60, -65);

            registerPassword.LoadContent(content);
            registerPassword.element.CentreElement(800, 600);
            registerPassword.element.MoveElement(60, -35);

            registerConfPassword.LoadContent(content);
            registerConfPassword.element.CentreElement(800, 600);
            registerConfPassword.element.MoveElement(60, -5);

            charName.LoadContent(content);
            charName.element.CentreElement(800, 600);
            charName.element.MoveElement(60, -65);

            // Set the style of the textbox
            loginPassword.textStyle = GUITextbox.TextStyle.PASSWORD;
            registerPassword.textStyle = GUITextbox.TextStyle.PASSWORD;
            registerConfPassword.textStyle = GUITextbox.TextStyle.PASSWORD;
        }

        // Update
        public void Update(GameTime gameTime)
        {
            // Check our gameState
            switch(gameState)
            {
                // Main menu game state
                case GameState.mainMenu:
                    // Only update the elements in the main list
                    foreach (GUIElement element in main)
                    {
                        element.Update();
                    }

                    break;
                // Login game state
                case GameState.Login:
                    // Only update the elements in the login list
                    foreach (GUIElement element in login)
                    {
                       element.Update();
                    }
                    // Update our textboxes!
                    loginUsername.Update(gameTime);
                    loginPassword.Update(gameTime);

                    //Console.WriteLine(loginUsername.enter() + " | " + loginPassword.enter());

                    if(loginUsername.enter() || loginPassword.enter())
                    {
                        //if (loginUsername.text == "" || loginPassword.text == "")
                        //{
                        //    System.Windows.Forms.MessageBox.Show("One of the fields are blank!", "GalacticSharp");
                        //}
                        //else
                        //{
                        //    gameState = GameState.mainMenu;
                        //    ClientTCP.Login(loginUsername.text, loginPassword.text);
                        //    loginUsername.Clear();
                        //    loginPassword.Clear();
                        //}
                    }

                    break;
                // Register gameState
                case GameState.Register:
                    // Only update the elements in the register list
                    foreach(GUIElement element in register)
                    {
                        element.Update();
                    }

                    // Update our textboxes!
                    registerUsername.Update(gameTime);
                    registerPassword.Update(gameTime);
                    registerConfPassword.Update(gameTime);

                    if(registerUsername.enter() || registerPassword.enter() || registerConfPassword.enter())
                    {
                        //if (registerUsername.text == "" || registerPassword.text == "" || registerConfPassword.text == "")
                        //{
                        //    System.Windows.Forms.MessageBox.Show("One of the fields are blank!", "GalacticSharp");
                        //}
                        //else
                        //{
                        //    if (registerPassword.text == registerConfPassword.text)
                        //    {
                        //        gameState = GameState.mainMenu;
                        //        ClientTCP.Register(registerUsername.text, registerPassword.text);
                        //        registerUsername.Clear();
                        //        registerPassword.Clear();
                        //        registerConfPassword.Clear();
                        //    }
                        //    else
                        //    {
                        //        System.Windows.Forms.MessageBox.Show("The passwords don't match!", "GalacticSharp");
                        //    }
                        //}
                    }

                    break;
                case GameState.CreateChar:
                    // Only update the elements in the createChar list
                    foreach(GUIElement element in createChar)
                    {
                        element.Update();
                    }
                    // Update our textboxes!
                    charName.Update(gameTime);
                    break;

                // inGame gameState
                case GameState.inGame:
                    break;
            }
        }

        // Draw!
        public void Draw(SpriteBatch spriteBatch)
        {
            switch (gameState)
            {
                case GameState.mainMenu:
                    foreach (GUIElement element in main)
                    {
                        element.Draw(spriteBatch);
                    }

                    break;
                case GameState.Login:
                    foreach (GUIElement element in login)
                    {
                        element.Draw(spriteBatch);
                    }

                    loginUsername.Draw(spriteBatch);
                    loginPassword.Draw(spriteBatch);

                    spriteBatch.DrawString(font, "Username", new Vector2(login.Find(x => x.AssetName == "GUI/name").GUIRect.X + 15, loginUsername.element.GUIRect.Y + 5), Color.White);
                    spriteBatch.DrawString(font, "Password", new Vector2(login.Find(x => x.AssetName == "GUI/name").GUIRect.X + 15, loginPassword.element.GUIRect.Y + 5), Color.White);
                    break;
                case GameState.Register:
                    foreach (GUIElement element in register)
                    {
                        element.Draw(spriteBatch);
                    }

                    registerUsername.Draw(spriteBatch);
                    registerPassword.Draw(spriteBatch);
                    registerConfPassword.Draw(spriteBatch);

                    spriteBatch.DrawString(font, "Username", new Vector2(login.Find(x => x.AssetName == "GUI/name").GUIRect.X + 15, registerUsername.element.GUIRect.Y + 5), Color.White);
                    spriteBatch.DrawString(font, "Password", new Vector2(login.Find(x => x.AssetName == "GUI/name").GUIRect.X + 15, registerPassword.element.GUIRect.Y + 5), Color.White);
                    spriteBatch.DrawString(font, "Confirm Password", new Vector2(login.Find(x => x.AssetName == "GUI/name").GUIRect.X + 15, registerConfPassword.element.GUIRect.Y + 5), Color.White);

                    break;
                case GameState.CreateChar:
                    foreach(GUIElement element in createChar)
                    {
                        element.Draw(spriteBatch);
                    }
                    charName.Draw(spriteBatch);

                    spriteBatch.DrawString(font, "Character Name", new Vector2(createChar.Find(x => x.AssetName == "GUI/name").GUIRect.X + 15, charName.element.GUIRect.Y + 5), Color.White);

                    break;
                case GameState.inGame:
                    break;
            }
        }

        // Our click event
        public void OnClick(string element)
        {
            if(element == "GUI/play")
            {
                // Play the game
                gameState = GameState.Register;
            }

            if(element == "GUI/nameBtn")
            {
                gameState = GameState.Login;
            }

            if(element == "GUI/done")
            {
                // Check if a textbox is blank...
                if (loginUsername.text == "" || loginPassword.text == "")
                {
                    // Tell user one of the fields are blank
                    System.Windows.Forms.MessageBox.Show("One of the fields are blank!", "GalacticSharp");
                }
                else
                {
                    // Change gameState
                    gameState = GameState.inGame;
                    // Call the Login method (username as String, password as String )
                    ClientTCP.Login(loginUsername.text, loginPassword.text);
                    ClientTCP.GetPlayerName(loginUsername.text);
                    // Clear the textboxes
                    loginUsername.Clear();
                    loginPassword.Clear();
                }
            }

            if (element == "GUI/doneRegister")
            {
                // Check if a textbox is blank...
                if (registerUsername.text == "" || registerPassword.text == "" || registerConfPassword.text == "")
                {
                    // tell user one of the fields are blank
                    System.Windows.Forms.MessageBox.Show("One of the fields are blank!", "GalacticSharp");
                }
                else
                {
                    // Make sure the passwords match!
                    if (registerPassword.text == registerConfPassword.text)
                    {
                        tmpUsername = registerUsername.text;
                        // Change gameState
                        gameState = GameState.CreateChar;
                        // Call the Register method (username as String, password as String )
                        ClientTCP.Register(registerUsername.text, registerPassword.text);
                        // Clear the textboxes
                        registerUsername.Clear();
                        registerPassword.Clear();
                        registerConfPassword.Clear();
                    }
                    else
                    {
                        // tell user that the passwords don't match!
                        System.Windows.Forms.MessageBox.Show("The passwords don't match!", "GalacticSharp");
                    }
                }
            }

            if(element == "GUI/charAccept")
            {
                if (charName.text == "")
                {
                    // tell user one of the fields are blank
                    System.Windows.Forms.MessageBox.Show("One of the fields are blank!", "GalacticSharp");
                }
                else
                {
                    gameState = GameState.inGame;
                    ClientTCP.SendNewChar(tmpUsername, charName.text, Vector2.Zero, 0);
                    Globals.playerName = tmpUsername;
                    // Clear the textboxes
                    charName.Clear();
                }
            }

            if (element == "GUI/exit")
            {
                // Simply exit the game via .Exit() method
                Game1.client.Disconnect("ExitClosed");
                game.Exit();
            }
        }
    }
}