#ifndef BLE_H
#define BLE_H

#include "eis.h"

/* Commands: Cue → ESP32 (0x1x) */
#define CMD_SET_SWEEP   0x10
#define CMD_SET_RTIA    0x11
#define CMD_SET_RCAL    0x12
#define CMD_START_SWEEP 0x13
#define CMD_GET_CONFIG  0x14

/* Responses: ESP32 → Cue (0x0x) */
#define RSP_SWEEP_START 0x01
#define RSP_DATA_POINT  0x02
#define RSP_SWEEP_END   0x03
#define RSP_CONFIG      0x04

typedef struct {
    uint8_t type;
    union {
        struct { float freq_start, freq_stop; uint16_t ppd; } sweep;
        uint8_t rtia;
        uint8_t rcal;
    };
} BleCommand;

int  ble_init(void);
int  ble_is_connected(void);
void ble_wait_for_connection(void);

/* blocking receive from command queue */
int ble_recv_command(BleCommand *cmd, uint32_t timeout_ms);

/* outbound data */
int ble_send_sweep_start(uint32_t num_points, float freq_start, float freq_stop);
int ble_send_eis_point(uint16_t index, const EISPoint *pt);
int ble_send_sweep_end(void);
int ble_send_config(const EISConfig *cfg);

#endif