#pragma once
#include <stdint.h>

typedef enum {
    EVT_BUTTON,          // GPIO edge: gpio, level, ts_us
    EVT_HOLD_EXPIRE,     // per-button hold timer fired: btn_idx
    EVT_COMBO_SLEEP,     // all-4 held 5s
    EVT_COMBO_SETTINGS,  // fwd+back held 1s
    EVT_BATT_TICK,       // 500ms periodic
    EVT_PEER_TICK,       // 1s periodic
    EVT_AUTOSAVE,        // one-shot 30s: flush NVS
    EVT_LIFE_DELTA_EXP,  // one-shot: clear life delta overlay
    EVT_RESET_CMD_EXP,   // one-shot: end reset_cmd broadcast
    EVT_IDLE_SLEEP,      // one-shot: idle timeout
    EVT_LED_BREATHE,     // 10ms periodic: breathing animation
} evt_type_t;

typedef struct {
    evt_type_t type;
    int        gpio;    // EVT_BUTTON only
    int        level;   // EVT_BUTTON only: 0=pressed 1=released
    int64_t    ts_us;   // EVT_BUTTON only
    int        btn_idx; // EVT_HOLD_EXPIRE only: 0=fwd 1=left 2=right 3=back
} app_event_t;

#define BTN_IDX_FWD   0
#define BTN_IDX_LEFT  1
#define BTN_IDX_RIGHT 2
#define BTN_IDX_BACK  3