#pragma once
#include "Osc.h"

class SpectrogramComponent   : public AudioAppComponent,
                               private Timer
{
public:
    SpectrogramComponent()
        : spectrogramImage(Image::RGB, 512, 512, true) {
        setOpaque(true);
        setAudioChannels(1, 0);
        startTimerHz(60);
        addAndMakeVisible(label, 1);
        setSize(700, 500);
    }

    ~SpectrogramComponent() override{
        shutdownAudio();
    }

    void prepareToPlay (int samplesPerBlockExpected, double sampleRate) override {
        lfo.setSampleRate(float(sampleRate));
        osc.setSampleRate(float(sampleRate));
    }
    void releaseResources() override          {}

    void getNextAudioBlock (const AudioSourceChannelInfo& bufferToFill) override {

        lfo.setFreq(.5f);
        float lfoData;

        auto* buffer = bufferToFill.buffer->getWritePointer(0, bufferToFill.startSample);
        for (auto sample = 0; sample < bufferToFill.numSamples; ++sample) {
            lfo.run();
            lfoData = (lfo.getSin() * .5f + .5f) * 420.f;
            osc.setFreq(lfoData);
            osc.run();
            wave = osc.getSin();

            buffer[sample] = wave;
        }
    }

    void paint (Graphics& g) override{
        g.fillAll (Colours::black);

        g.setOpacity (1.0f);
        g.drawImage (spectrogramImage, getLocalBounds().toFloat());

        String text = "freq: " + String(osc.getFreq()) + ", wave: " + String(wave);
        label.setText(text, NotificationType::dontSendNotification);
        label.setBounds(20, 20, 1000, 20);
    }

    void timerCallback() override {}

    void pushNextSampleIntoFifo(float) noexcept {
        // if the fifo contains enough data, set a flag to say
        // that the next line should now be rendered..
    }

    void drawNextLineOfSpectrogram() {}

private:
    Image spectrogramImage;
    Label label;
    Osc osc;
    float wave;
    Osc lfo;

    JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (SpectrogramComponent)
};