#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
};

// FramedDetector — C++ port of framed_render.py (Phase 5 pilot, mean=0.175 dB).
// Multi-band: each active band contributes gain_k = (1-C_k)*res_k^rp,
// final mask = min over bands (max suppression).
//   res_k[f] = |2B(z)/A(z)|     (twin resonance, sens-scaled GAIN)
//   am       = 2|X_k|/wsum      (smoothed per-bin amplitude)
//   xv_k     = log10(am / res_k)
//   C_k      = G_FIT*LUT(xv_k) + W_FIT*warp(f)^A_FIT
//   gain_k   = max(1-C_k, eps) * res_k^(rp0*Q_k^drp)
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> warp_;               // per-bin warp tilt
    std::vector<float> am_;                 // smoothed per-bin amplitude
    std::vector<float> rp_;                 // per-band res power
};