#include "Instrument.hpp"

#include "string"

Instrument::Instrument(ConfigService* config, LoggerService* logger) :
    config_(config), logger_(logger) {

}

void Instrument::noteOn(float frequency, float velocity) {

    phaseIncrement_ = 2.0f * pi * frequency / sampleRate_;

    envelope_ += 0.01f; // so it triggers as active

    active_ = true;
}

void Instrument::noteOff() {
    active_ = false;
}

bool Instrument::isActive() {
    return (envelope_ > 0.0f);
}

float Instrument::process(bool& scopeTrigger) {

    if(active_ && envelope_ < 1.0f) envelope_ += 0.01f;
    if(!active_ && envelope_ > 0.0f) envelope_ -= 0.01f;

    phase_ += phaseIncrement_;
    if(phase_ > 2.0f * pi) {
        phase_ -= 2.0f * pi;
        scopeTrigger = true;
    }

    if(!isActive()) return 0.0f;
    return sin(phase_) * envelope_;

}