package audio

// WaveformData holds pre-computed waveform samples
type WaveformData struct {
	Samples   []float64
	MaxValue  float64
}

// NewWaveformData creates waveform data from raw samples
func NewWaveformData(samples []float64) *WaveformData {
	wd := &WaveformData{
		Samples: samples,
	}

	// Find max value for normalization
	for _, s := range samples {
		if s > wd.MaxValue {
			wd.MaxValue = s
		}
	}

	if wd.MaxValue == 0 {
		wd.MaxValue = 1 // Avoid division by zero
	}

	return wd
}

// Normalized returns samples normalized to 0-1 range
func (w *WaveformData) Normalized() []float64 {
	normalized := make([]float64, len(w.Samples))
	for i, s := range w.Samples {
		normalized[i] = s / w.MaxValue
	}
	return normalized
}