#include "debughelper.h"

DebugHelper::DebugHelper(bool init) :
    _toggled(init),
    _red_pulse({0.f, 0.f}, sf::Color(255, 0, 0)),
    _green_pulse({460.f, 0.f}, sf::Color(0, 255, 0)),
    _blue_pulse({460.f, 360.f}, sf::Color(0, 100, 255))
{
    _font.loadFromFile("/usr/share/qtcreator/fonts/SourceCodePro-Regular.ttf");

    _time_print.setFont(_font);
    _time_print.setPosition(60, 60);
    _time_print.setFillColor(sf::Color(255, 255, 255));
    _time_print.setCharacterSize(25);
}

void DebugHelper::toggle()
{
    _toggled = !_toggled;
}

void DebugHelper::update(const microsec &microseconds)
{
    _time_print.setString(std::to_string(microseconds));

    _red_pulse.fade();
    _green_pulse.fade();
    _blue_pulse.fade();
}

void DebugHelper::draw(sf::RenderTarget& target, sf::RenderStates states) const
{
    if (_toggled)
    {
        target.draw(_green_pulse, states);
        target.draw(_red_pulse, states);
        target.draw(_blue_pulse, states);
        target.draw(_time_print, states);
    }
}

void DebugHelper::spawnGreenPulse()
{
    _green_pulse.appear();
}

void DebugHelper::spawnRedPulse()
{
    _red_pulse.appear();
}

void DebugHelper::spawnBluePulse()
{
    _blue_pulse.appear();
}

DebugHelper::Pulse::Pulse(sf::Vector2f position, sf::Color fill_color)
{
    _pulse_shape.setSize({480, 360});
    _pulse_shape.move(position.x, position.y);

    fill_color.a = 0;
    _pulse_shape.setFillColor(fill_color);
}

void DebugHelper::Pulse::appear()
{
    auto fill_color = _pulse_shape.getFillColor();
    fill_color.a = 255;
    _pulse_shape.setFillColor(fill_color);
}

void DebugHelper::Pulse::fade()
{
    auto fill_color = _pulse_shape.getFillColor();

    if (fill_color.a == 0)
        return;

    const auto new_alpha = fill_color.a - 25;
    fill_color.a = new_alpha < 0 ? 0 : new_alpha;

    _pulse_shape.setFillColor(fill_color);
}

void DebugHelper::Pulse::draw(sf::RenderTarget& target, sf::RenderStates states) const
{
    target.draw(_pulse_shape, states);
}