#include "classicnote.h"
#include "classicsprite.h"
#include <SFML/Graphics/RenderTarget.hpp>
#include <iostream>

ClassicNote::ClassicNote(const std::vector<microsec>& intervals, microsec perfect_offset,
                         Action action, const Coordinates& coord) :
    Note(perfect_offset),
    _coordinates(coord),
    _evaluator(intervals, _perfect_offset),
    _action(action),
    _appearance_time(0),
    _current_state(ClassicNoteState::NONE)
{}

bool ClassicNote::isActive() const
{
    return _states.at(_current_state)->value() == ClassicNoteState::ACTIVE;
}

void ClassicNote::putToGame(const microsec &offset)
{
    _appearance_time = offset;  // To animation manager
    _trail_path_percent = ((_perfect_offset - _appearance_time) * 0.01);

    _current_state = ClassicNoteState::FLYING;
    _states.at(_current_state)->onEntering(this);
}

bool ClassicNote::isExpired() const
{
    return _states.at(_current_state)->value() == ClassicNoteState::NONE;
}

static int getPt( float n1 , float n2 , float perc )
{
    float diff = n2 - n1;

    return n1 + ( diff * perc );
}

void ClassicNote::update(const microsec& music_offset)
{
    _states.at(_current_state)->update(this, music_offset);
    /*switch (_state)   // States will be objects
    {
    case State::DYING:
        _sprite->update();
        if (_sprite->isDead())
            setState(State::NONE);
        break;

    case State::FLYING:
    {
        float i;
        auto update_time = music_offset - _appearance_time;   // This all will be inside ::update
        i = update_time / _trail_path_percent * 0.01;      //         of an animation object

        float xa = getPt( _coordinates.x + 20.  , _coordinates.x + 90. , i );
        float ya = getPt( _coordinates.y - 600. , _coordinates.y - 150. , i );
        float xb = getPt( _coordinates.x + 90.  , _coordinates.x , i );
        float yb = getPt( _coordinates.y - 150. , _coordinates.y , i );

        _sprite->update(getPt( xa , xb , i ), getPt( ya , yb , i ));
        if (i >= 1)
        {
            _sprite->trailFade();
        }

        if (_evaluator.isActive(music_offset))
            setState(State::ACTIVE);
        break;
    }

    case State::ACTIVE:
    {
        float i;
        auto update_time = music_offset - _appearance_time;   // This all will be inside ::update
        i = update_time / _trail_path_percent * 0.01;      //         of an animation object

        float xa = getPt( _coordinates.x + 20.  , _coordinates.x + 90. , i );
        float ya = getPt( _coordinates.y - 600. , _coordinates.y - 150. , i );
        float xb = getPt( _coordinates.x + 90.  , _coordinates.x , i );
        float yb = getPt( _coordinates.y - 150. , _coordinates.y , i );

        _sprite->update(getPt( xa , xb , i ), getPt( ya , yb , i ));
        if (i >= 1)
        {
            _sprite->trailFade();
        }

        if (!_evaluator.isActive(music_offset))
            setState(State::DYING);
        break;
    }

    default:
        break;
    } */
}

void ClassicNote::draw(sf::RenderTarget& target, sf::RenderStates states) const
{
    target.draw(*_sprite, states);
}

auto ClassicNote::input(ClassicInputType&& input_data) -> Grade
{ 
    auto grade = ClassicNote::Grade::BAD;

    if (input_data == _action)
        grade = _evaluator.calculatePrecision(input_data.timestamp());

    _current_state = ClassicNoteState::DYING;
    _states.at(_current_state)->onEntering(this);

    std::cout << "User input: " << static_cast<int>(grade) << "\n";

    return grade;
}

Action ClassicNote::action() const
{
    return _action;
}

/*void ClassicNote::setState(State next_state)
{
    switch (next_state)   // States will be objects
    {
    case State::DYING:
        _sprite->pulse();
        break;

    case State::FLYING:
        _sprite->setCoordinates(_coordinates.x, _coordinates.y, _coordinates.x + 20, _coordinates.y - 600);
        break;

    case State::NONE:
        _sprite->reset();
        break;

    default:
        break;
    }

    _state = next_state;
} */

std::shared_ptr<ClassicSprite> ClassicNote::sprite() const noexcept
{
    return _sprite;
}

void ClassicNote::setSprite(const std::shared_ptr<ClassicSprite>& sprite) noexcept
{
    _sprite = sprite;
}

const Coordinates& ClassicNote::getCoordinates() const noexcept
{
    return _coordinates;
}