#pragma once

#include "../FXProcessor.h"

namespace serum
{

// ===========================================================================
// Reverb — Freeverb-style Schroeder reverb (8 combs + 4 allpasses per channel)
// with predelay. p[0]=size, p[1]=damping, p[2]=width, p[3]=predelay.
// ===========================================================================
class ReverbUnit : public FXUnit
{
public:
    void prepare (double sampleRate, int maxBlockSize) override;
    void reset() override;
    void process (float* l, float* r, int numSamples, const float p[4]) override;

private:
    double sr = 44100.0;

    std::array<std::vector<float>, 8> combL, combR;
    std::array<int, 8> combPosL {}, combPosR {};
    std::array<float, 8> combFiltL {}, combFiltR {};

    std::array<std::vector<float>, 4> apL, apR;
    std::array<int, 4> apPosL {}, apPosR {};

    std::vector<float> preL, preR;
    int prePos = 0;
};

} // namespace serum