#pragma once
#include <cstddef>
#include <complex>
#include <vector>

struct DetectorBand {
    float fc;    // band center freq (Hz)
    float q;     // resonance Q
    float sens;  // XML sens (dB); internal sens_stored = sens * 2.054
    float level_scale = 1.0f;  // calibration: level = am * res * level_scale
};

// FramedDetector — C++ transcription of the real soothe2 mask-apply chain
// (FUN_180529fe0 mono path, 0x5408b8==0), bit-exact structure.
//
// Per band, per bin (exact decomp /tmp/consumers_out.txt:638-1111):
//   1. scale:      x  = level * (fVar30/0x1a0) * 0x540870 * 0x54088c
//   2. IIR1 leaky: y[i] = A1[i]*acc + B1[i]*x[i]   (A1/B1 ramp attack, live tables)
//   3. IIR2 leaky: same with A2/B2 (slow release)
//   4. blend:      b = freqaxis*(1-mix) + mix*0.8;  mask = exp2(0.5*(mask-b))
//   5. combine:    acc[band] = mask - b; mirror; += w_att*upper; += w_rel*lower; += mask
//   6. warp:       mask *= 0x540768[band]; mask *= warp  (dual tilt)
//   7. IIR3 leaky: twice with A3/B3
//   8. dry/wet:    mask = mask*(fVar30*0x540888) + (1-fVar30)
// final = min over bands.
class FramedDetector {
public:
    FramedDetector(size_t nfft, float sample_rate);
    ~FramedDetector();

    void setParams(const std::vector<DetectorBand>& bands);

    void processFrame(const std::complex<double>* spectrum, float* mask);

private:
    size_t nfft_;
    float sample_rate_;
    double wsum_;

    std::vector<DetectorBand> bands_;
    std::vector<std::vector<float>> res_;   // per band, per bin |2B/A|
    std::vector<float> am_;                 // smoothed per-bin amplitude
    std::vector<std::vector<float>> track_; // per band, per bin accumulator 0x5407c8
};