using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Graphics;
using Microsoft.Xna.Framework.Input;
using System.Collections.Generic;
using System;

namespace Asteroids;

public class Player
{
    public Texture2D Texture;
    public Texture2D BTexture;
    public List<bullet> Bullets;
    public List<powerup> Ups;
    public Rectangle Rect;
    public Vector2 force;
    public Vector2 pos;
    public int wait;
    public bool waitb;
    public Rectangle[] Boxes;
    public float boost;
    public float maxboost;
    public bool boosting;
    public bool regboost;
    public int Health;
    public int maxHP;
    public Player(Texture2D Texture, Texture2D BTexture)
    {
        this.Texture = Texture;
        this.BTexture = BTexture;
        Rect = new Rectangle(0,0,Texture.Width/2, Texture.Height/2);
        pos = new Vector2(vars.PlayArea.X + vars.PlayArea.Width/2 - Rect.Width/2, vars.PlayArea.Y + vars.PlayArea.Height - 100);
        Rect = new Rectangle((int)pos.X, (int)pos.Y, Rect.Width, Rect.Height);
        Bullets = new List<bullet>();
        Ups = new List<powerup>();
        Health = 100;
        maxHP = Health;
        maxboost = 10;
        boost = maxboost/2;
    }
    public void input(GameTime gameTime)
    {
        KeyboardState KEY = Keyboard.GetState();
        if(KEY.IsKeyDown(Keys.W))
        {
            force.Y -= 0.1f;
        }
        if(KEY.IsKeyDown(Keys.S))
        {
            force.Y += 0.1f;
        }
        if(KEY.IsKeyDown(Keys.A))
        {
            force.X -= 0.1f;
        }
        if(KEY.IsKeyDown(Keys.D))
        {
            force.X += 0.1f;
        }
        if(KEY.IsKeyDown(Keys.LeftShift))
        {
            if(!regboost)
            {
                boosting = true;
            }
        }
        else
        {
            boosting = false;
        }
        if(KEY.IsKeyDown(Keys.Space))
        {
            wait--;
            if(wait <= 0)
            {
                wait = 10;
                bulletspawner();
            }
        }
        else
        {
            wait = 0;
        }
        if(KEY.IsKeyDown(Keys.Escape) && waitb)
        {
            vars.Scens.Scene = 2;
            vars.Scens.wait = false;
        }
        if(KEY.IsKeyUp(Keys.Escape)){waitb = true;}
        //Checking boost numbs
        if(!boosting)
        {
            boost += (float)gameTime.ElapsedGameTime.TotalSeconds;
        }
        if(boost <= 0)
        {
            regboost = true;
            boosting = false;
            boost = 0;
        }
        if(boost >= maxboost)
        {
            regboost = false;
            boost = maxboost;
        }
        //exiting if no force applied
        if(force == Vector2.Zero)
        {
            return;
        }
        force.X = MathHelper.Clamp(force.X, -1, 1);
        force.Y = MathHelper.Clamp(force.Y, -1, 1);
        if(force.Y > 0 && KEY.IsKeyUp(Keys.S)){force.Y -= 0.1f;}
        if(force.Y < 0 && KEY.IsKeyUp(Keys.W)){force.Y += 0.1f;}
        if(force.X > 0 && KEY.IsKeyUp(Keys.D)){force.X -= 0.1f;}
        if(force.X < 0 && KEY.IsKeyUp(Keys.A)){force.X += 0.1f;}
        force.Y = MathF.Round(force.Y, 1);
        force.X = MathF.Round(force.X, 1);
        if(boosting)
        {
            pos += force * 5;
            boost -= (float)gameTime.ElapsedGameTime.TotalSeconds *3;
        }
        else{pos += force * 3;}
    }
    public void Draw(SpriteBatch _spriteBatch, GameTime gameTime)
    {
        foreach(var item in Ups)
        {
            item.Update(gameTime);
        }
        foreach(var item in Bullets)
        {
            item.Draw(_spriteBatch);
        }
        Rect = new Rectangle((int)pos.X, (int)pos.Y, Rect.Width, Rect.Height);
        _spriteBatch.Draw(Texture, Rect, null, Color.White);
    }
    public void Collision(Rectangle[] Boxes)
    {
        this.Boxes = Boxes;
        if(!Boxes[0].Contains(Rect))
        {
            if(Rect.Left < Boxes[0].Left)
            {
                pos.X += Boxes[0].Left - Rect.Left;
            }
            if(Rect.Right > Boxes[0].Right)
            {
                pos.X -= Rect.Right - Boxes[0].Right;
            }
            if(Rect.Top < Boxes[0].Top)
            {
                pos.Y += Boxes[0].Top - Rect.Top;
            }
            if(Rect.Bottom > Boxes[0].Bottom)
            {
                pos.Y -= Rect.Bottom - Boxes[0].Bottom;
            }
        }
        Bullets.RemoveAll(pred);
        Ups.RemoveAll(powPred);
    }
    public bool pred(bullet b)
    {
        return b.Collision(Boxes);
    }
    public bool powPred(powerup P)
    {
        if(P.TimeLeft <= 0)
        {
            return true;
        }
        return false;
    }
    public void bulletspawner()
    {
        Bullets.Add(new bullet(BTexture, new Vector2(pos.X + Rect.Width/2 - BTexture.Width/2, pos.Y), 10f, 0f, Color.White));
        foreach(var item in Ups)
        {
            item.bullets(Bullets, this);
        }
    }
}
public class bullet
{
    public Texture2D Texture;
    public float Speed;
    public Vector2 pos;
    public Rectangle Rect;
    public float Rot;
    public Color C;
    public bullet(Texture2D Texture, Vector2 pos, float Speed, float rot, Color C)
    {
        this.Texture = Texture;
        this.pos = pos;
        this.Speed = Speed;
        this.Rot = rot;
        this.C = C;
        Rect = new Rectangle((int)pos.X, (int)pos.Y, Texture.Width, Texture.Height);
        AudioEn.playsound(2);
    }
    public void Draw(SpriteBatch _spriteBatch)
    {
        Vector2 e = new Vector2(MathF.Cos(Rot - 1.5707963268f) * Speed, MathF.Sin(Rot - 1.5707963268f) * Speed);
        pos += e;
        Rect = new Rectangle((int)pos.X, (int)pos.Y, Texture.Width, Texture.Height);
        _spriteBatch.Draw(Texture, Rect, null, C, Rot, Vector2.Zero, SpriteEffects.None, 0f);
    }
    public bool Collision(Rectangle[] Boxes)
    {
        if(!Boxes[0].Contains(Rect))
        {
            return true;
        }
        return false;
    }
}
public class powerup
{
    public float TimeLeft;
    public float[] rots;
    public powerup()
    {
        Random r = new Random();
        TimeLeft = r.Next(5, 20);
        rots = new float[r.Next(1, 2)];
        for(int i = 0; i < rots.Length;i++)
        {
            rots[i] = r.Next(-45, 45);
        }
    }
    public void Update(GameTime gameTime)
    {
        TimeLeft -= (float)gameTime.ElapsedGameTime.TotalSeconds;
    }
    public void bullets(List<bullet> Bullets, Player PL)
    {
        foreach(var item in rots)
        {
            Bullets.Add(new bullet(PL.BTexture, new Vector2(PL.pos.X + PL.Rect.Width/2 - PL.BTexture.Width/2, PL.pos.Y), 10f, MathHelper.ToRadians(item), Color.BlanchedAlmond));
        }
    }
}