#include <SFML/Window.hpp>
#include <SFML/Graphics.hpp>
#include <iostream>
#include <cmath>
#include "animation.hpp"
#include "player.hpp"
#include "player_states.hpp"

using std::cout, std::endl;

PlayerState::PlayerState() 
{
}


void PlayerState::updateSprite(sf::Sprite& sprite, bool isFacedRight, float scaleFactor)
{
    mAnimation.updateSprite(sprite);

    if (!isFacedRight)
    {
        sprite.setScale({-scaleFactor, scaleFactor});
    }
    else
    {
        sprite.setScale({scaleFactor, scaleFactor});
    }
}


void PlayerState::jump(Player* player)
{
    player->mPosition.y -= 1;
    player->mVelocity.y = -kJumpingVelocity;
    startFalling(player);
}

PlayerState::~PlayerState() 
{
}



sf::FloatRect operator*(float x, sf::FloatRect rect)
{
    return {x * rect.left, x * rect.top, x * rect.width, x * rect.height};
}



Idle::Idle(Player* player) 
{
    player->mVelocity = {0, 0};
    mAnimation = Animation();
    mAnimation.setAnimationSpeed(6);
    mAnimation.addTextureRect({ 14, 6, 21, 30});
    mAnimation.addTextureRect({ 64, 6, 21, 30});
    mAnimation.addTextureRect({114, 6, 21, 30});
    mAnimation.addTextureRect({164, 6, 21, 30});

    player->mCollisionRect =  player->mScaleFactor * sf::FloatRect(-10, -15, 20, 30);

    cout << "Creating Idle state" << endl;
}


void Idle::hook(Player* player) 
{  
}

void Idle::update(Player* player, float dt)
{
    mAnimation.update(dt);
    if (sf::Keyboard::isKeyPressed(sf::Keyboard::Left) || sf::Keyboard::isKeyPressed(sf::Keyboard::Right))
    {
        player->setState(new Running(player));
    }
}

void Idle::handleEvents(Player* player, const sf::Event& event) 
{
    if (event.type == sf::Event::KeyPressed)
    {
        if (event.key.code == sf::Keyboard::Left || event.key.code == sf::Keyboard::Right)
        {
            player->setState(new Running(player));
        }

        else if (event.key.code == sf::Keyboard::Space)
        {
            jump(player);
        }
        else if (event.key.code == sf::Keyboard::LShift)
        {
            player->mVelocity.x = player->mIsFacedRight ? -100 : 100;
            player->setState(new Sitting(player));
        }
    }
}

void Idle::startFalling(Player* player)
{
    player->setState(new Falling(player));
}

void Idle::hitGround(Player* player)
{
}









Running::Running(Player* player) : PlayerState()
{
    mRunningSpeed = 900;
    mAnimation = Animation();
    mAnimation.setAnimationSpeed(12);
    mAnimation.addTextureRect({ 67, 45, 20, 27});
    mAnimation.addTextureRect({116, 46, 20, 27});
    mAnimation.addTextureRect({166, 48, 20, 27});
    mAnimation.addTextureRect({217, 45, 20, 27});
    mAnimation.addTextureRect({266, 46, 20, 27});
    mAnimation.addTextureRect({316, 48, 20, 27});

    player->mCollisionRect = player->mScaleFactor * sf::FloatRect(-10, -15, 20, 30);;

    cout << "Creating Running state" << endl;
}

void Running::hook(Player* player)
{
}


void Running::update(Player* player, float dt)
{
    mAnimation.update(dt);
    if (sf::Keyboard::isKeyPressed(sf::Keyboard::Left))
    {
        player->mVelocity.x = -mRunningSpeed;
        player->mIsFacedRight = false;
    }
    if (sf::Keyboard::isKeyPressed(sf::Keyboard::Right))
    {
        player->mVelocity.x = mRunningSpeed;
        player->mIsFacedRight = true;
    }
}

void Running::handleEvents(Player* player, const sf::Event& event)
{
    if (event.type == sf::Event::KeyPressed)
    {
        if (event.key.code == sf::Keyboard::Space)
        {
            jump(player);
            return;
        }

        else if (event.key.code == sf::Keyboard::LShift)
        {
            player->setState(new Sliding(player));
        }

    }
    else if (event.type == sf::Event::KeyReleased)
    {
        if (event.key.code == sf::Keyboard::Left && !sf::Keyboard::isKeyPressed(sf::Keyboard::Right))
        {
            player->setState(new Idle(player));
            player->mVelocity.x = 0;
        }

        else if (event.key.code == sf::Keyboard::Right && !sf::Keyboard::isKeyPressed(sf::Keyboard::Left))
        {
            player->setState(new Idle(player));
            player->mVelocity.x = 0;
        }
    }
}

void Running::startFalling(Player* player)
{
    player->setState(new Falling(player));
}

void Running::hitGround(Player* player)
{
}







Sliding::Sliding(Player* player) : PlayerState()
{
    if (player->mVelocity.x > 0)
        player->mVelocity.x = kSlidingVelocity;
    else if (player->mVelocity.x < 0)
        player->mVelocity.x = -kSlidingVelocity;

    mAnimation = Animation(Animation::AnimationType::OneIteration);
    mAnimation.setAnimationSpeed(10);
    mAnimation.addTextureRect({155, 119, 34, 28});
    mAnimation.addTextureRect({205, 119, 34, 28});
    mAnimation.addTextureRect({255, 119, 34, 28});
    mAnimation.addTextureRect({307, 119, 34, 28});
    mAnimation.addTextureRect({  9, 156, 34, 28});

    player->mCollisionRect = sf::FloatRect(-80, -20, 160, 80);
    player->mCollisionRect = player->mScaleFactor * sf::FloatRect(-20, -5, 40, 20);;
    mCurrentTime = kSlidingTime;

    cout << "Creating Sliding state" << endl;    
}

void Sliding::hook(Player* player)
{
}


void Sliding::update(Player* player, float dt)
{
    mAnimation.update(dt);
    player->mVelocity.x *= kVelocityDecay;
    mCurrentTime -= dt;
    if (mCurrentTime < 0 && player->mIsColliding)
    {
        if (sf::Keyboard::isKeyPressed(sf::Keyboard::Left) || sf::Keyboard::isKeyPressed(sf::Keyboard::Right))
            player->setState(new Running(player));
        else
            player->setState(new Idle(player));
        return;
    }
}
void Sliding::handleEvents(Player* player, const sf::Event& event)
{
    if (event.type == sf::Event::KeyPressed)
    {
        if (event.key.code == sf::Keyboard::Left || event.key.code == sf::Keyboard::Right)
            player->setState(new Running(player));


        if (event.key.code == sf::Keyboard::Space && player->mIsColliding)
        {
            jump(player);
            player->setState(new Falling(player));
        }
    }
}

void Sliding::startFalling(Player* player)
{

}

void Sliding::hitGround(Player* player)
{
}







Falling::Falling(Player* player) : PlayerState()
{
    mAnimation = Animation();
    mAnimation.setAnimationSpeed(12);
    mAnimation.addTextureRect({321, 155, 15, 26});

    player->mCollisionRect = player->mScaleFactor * sf::FloatRect(-10, -15, 20, 30);;

    cout << "Creating Falling state" << endl;
}

void Falling::hook(Player* player)
{
    player->setState(new Hooked(player));
}


void Falling::update(Player* player, float dt)
{
    mAnimation.update(dt);
    if (sf::Keyboard::isKeyPressed(sf::Keyboard::Left))
    {
        player->mVelocity.x = -kHorizontalVelocity;
        player->mIsFacedRight = false;
    }

    if (sf::Keyboard::isKeyPressed(sf::Keyboard::Right))
    {
        player->mVelocity.x = kHorizontalVelocity;
        player->mIsFacedRight = true;
    }
}

void Falling::handleEvents(Player* player, const sf::Event& event)
{
    if (event.type == sf::Event::KeyPressed)
    {
        if (event.key.code == sf::Keyboard::Space && !hasJumped) {
            kJumpingVelocity = 1000;
            jump(player);
            hasJumped = true;
        }
    }
}

void Falling::startFalling(Player* player)
{
}

void Falling::hitGround(Player* player)
{
    player->setState(new Idle(player));
}







Hooked::Hooked(Player* player) : PlayerState()
{
    mAnimation = Animation(Animation::AnimationType::OneIteration);
    mAnimation.setAnimationSpeed(12);
    mAnimation.addTextureRect({ 70, 151, 16, 34});
    mAnimation.addTextureRect({119, 151, 16, 34});
    mAnimation.addTextureRect({169, 151, 16, 34});
    mAnimation.addTextureRect({219, 151, 16, 34});

    player->mCollisionRect = player->mScaleFactor * sf::FloatRect(-10, -15, 20, 30);;

    cout << "Creating Hooked state" << endl;
}

void Hooked::hook(Player* player)
{
}


void Hooked::update(Player* player, float dt)
{
    player->mVelocity = {0, 0};
    mAnimation.update(dt);
}

void Hooked::handleEvents(Player* player, const sf::Event& event)
{
    if (event.type == sf::Event::KeyPressed)
    {
        if (event.key.code == sf::Keyboard::Space)
            jump(player);

        else if (event.key.code == sf::Keyboard::Down)
        {
            player->mVelocity.x = player->mIsFacedRight ? -100 : 100;
            player->setState(new Falling(player));
        }
    }
}

void Hooked::startFalling(Player* player)
{
    player->setState(new Falling(player));
}

void Hooked::hitGround(Player* player)
{
    player->setState(new Idle(player));
}


/* Sitting */
Sitting::Sitting(Player* player) : PlayerState()
{
   // mAnimation = Animation(Animation::AnimationType::OneIteration);

   mAnimation = Animation();
   mAnimation.setAnimationSpeed(4);

    mAnimation.addTextureRect({168, 340, 18, 30});
    mAnimation.addTextureRect({219, 340, 18, 30});
    mAnimation.addTextureRect({267, 340, 18, 30});

//    player->mCollisionRect = player->mScaleFactor * sf::FloatRect(-20, -20, 20, 40);;
    player->mCollisionRect = sf::FloatRect(-80, -10, 160, 80);
    player->mCollisionRect = player->mScaleFactor * sf::FloatRect(-20, -5, 40, 20);;
    cout << "Creating Sitting state" << endl;
}

void Sitting::update(Player* player, float dt)
{
   player->mVelocity = {0, 0};
   mAnimation.update(dt);
}

void Sitting::handleEvents(Player* player, const sf::Event& event)
{
    if (event.type == sf::Event::KeyPressed)
    {
        if (event.key.code == sf::Keyboard::LShift)
        {
            player->mVelocity.x = player->mIsFacedRight ? -100 : 100;
            player->setState(new Idle(player));
        }
    }
}

void Sitting::hook(Player* player) {}

void Sitting::startFalling(Player* player) {}

void Sitting::hitGround(Player* player) {}