#include "headers/framerate_counter.hpp"

namespace asloengine
{
    
    FramerateCounter::FramerateCounter(sf::String _name, uint _update_interval)
        : GameObject(_name)
    {

        set_update_interval(_update_interval);

        prefix = "";
        postfix = "";

    }

    FramerateCounter::FramerateCounter(sf::String _name, std::shared_ptr<sf::Text> _target_text, uint _update_interval)
        : GameObject(_name), target_text(_target_text)
    {

        set_update_interval(_update_interval);

        prefix = "";
        postfix = "";

    }

    FramerateCounter::~FramerateCounter()
    {

        if (values)
        {
            delete[] values;
        }

    }

    void FramerateCounter::set_update_interval(uint _update_interval)
    {

        if (_update_interval < 1)
        {
            _update_interval = 1;
        }

        update_interval = _update_interval;

        values = new float[_update_interval];
        for (uint i; i < _update_interval; i++)
        {
            values[i] = 0;
        }

    }

    uint FramerateCounter::get_update_interval() const
    {

        return update_interval;

    }

    void FramerateCounter::on_start()
    {

        counter = 0;

    }

    void FramerateCounter::on_update(float delta_time)
    {

        if (counter == update_interval)
        {
            counter = 0;
            sf::String output_string = prefix + fmt::format("{:.1f}", (calculate_average(values, update_interval))) + postfix;
            if (target_text)
            {
                target_text->setString(output_string);
            }
            signal_on_counter_updated(output_string);
        }

        values[counter] = (1 / delta_time);
        counter++;

    }

}