#pragma once
#include <stddef.h>
#include <stdint.h>
#include "esp_err.h"

// All runtime-tunable parameters in one struct. Defaults come from Kconfig, the
// saved copy (NVS) wins when present and layout-compatible.
typedef struct {
    float    threshold;      // cosine similarity needed for a frame to "match"
    float    min_rms;        // loudness gate (int16 RMS); quieter frames never match
    uint32_t win_n;          // sliding window length (frames), 1..32
    uint32_t win_m;          // matches needed inside the window, 1..win_n
    uint32_t cooldown_ms;    // quiet tail that groups matches into one buzz event
    float    noise_mult;     // learn/adapt gate = noise floor * this
    float    adapt_weight;   // weight of the NEW template in `adapt` (0..1)
    uint32_t monitor_ms;     // min interval between `monitor` lines
} app_config_t;

esp_err_t config_init(void);              // nvs_flash_init + load
void config_get(app_config_t *out);       // thread-safe copy
esp_err_t config_set_param(const char *name, const char *value, char *err, size_t err_len);
esp_err_t config_reset_defaults(void);
int config_param_count(void);
const char *config_param_name(int i);
void config_param_format(int i, char *buf, size_t len);   // "0.800  (range 0.1..0.999)  help"