using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Microsoft.Xna.Framework.Input;
using VBXSE;

namespace SnakeRPG
{
    public static partial class Main
    {
        static KeyboardState oldKeyboardState = Keyboard.GetState();
        static KeyboardState newKeyBoardState = Keyboard.GetState();

        public static void HandleInput()
        {
            oldKeyboardState = newKeyBoardState;
            newKeyBoardState = Keyboard.GetState();

            if (!onTitleScreen)
            {
                //Movement
                if (KeyPressed(Keys.Left) || KeyPressed(Keys.A) || KeyPressed(Keys.NumPad4)) RotateSnake(-1);
                else if (KeyPressed(Keys.Right) || KeyPressed(Keys.D) || KeyPressed(Keys.NumPad6)) RotateSnake(1);

                //Dev stuff
                if (DEBUGMODE)
                {
                    if (KeyPressed(Keys.P))
                    {
                        snake.speed += 0.5f;
                        LogVerbose("Speed now " + snake.speed);
                    }
                    if (KeyPressed(Keys.O))
                    {
                        snake.speed -= 0.5f;
                        LogVerbose("Speed now " + snake.speed);
                    }

                    if (KeyPressed(Keys.Z))
                    {
                        wallhack = !wallhack;
                        LogVerbose("Wallhack now " + wallhack + ".");
                    }

                    if (KeyPressed(Keys.S)) Save();
                    if (KeyPressed(Keys.L)) Load();
                }
            }

            //Title screen
            if (onTitleScreen)
            {
                if (KeyPressed(Keys.Up) || KeyPressed(Keys.W)) TitleScreenMoveSelect(-1);
                if (KeyPressed(Keys.Down) || KeyPressed(Keys.S)) TitleScreenMoveSelect(1);
                if (KeyPressed(Keys.Enter) || KeyPressed(Keys.Space) || KeyPressed(Keys.Z)) TitleScreenConfirm();
            }
            
            //Meta
            if (KeyPressed(Keys.F) || ((newKeyBoardState.IsKeyDown(Keys.LeftAlt) || newKeyBoardState.IsKeyDown(Keys.RightAlt)) && KeyPressed(Keys.Enter))) SpriteEngine.ToggleFullscreen();
            if (KeyPressed(Keys.Escape)) Main.running = false;
            if (KeyPressed(Keys.Space) && !onTitleScreen)
            {
                if (paused)
                {
                    paused = false;
                    pausedSprite.enabled = false;
                }
                else
                {
                    paused = true;
                    pausedSprite.enabled = true;
                }
            }
        }

        public static bool KeyPressed(Keys key)
        {
            if (newKeyBoardState.IsKeyDown(key) && oldKeyboardState.IsKeyUp(key)) return true;
            return false;
        }
    }
}