#ifndef RADAR_MANAGER_H
#define RADAR_MANAGER_H

#include "typedef.h"
/*
 * radar_manager 的职责：
 * 1. 保存“当前最新雷达状态”
 * 2. 对上层提供一致快照
 * 3. 判断 fresh / valid / meaningful change
 *
 * 它不知道：
 * - UART
 * - R60 CTRL/CMD
 * - MQTT
 * - WiFi
 * - Flash
 */

struct radar_manager_input {
    u8 presence;
    u8 motion;
    u8 body_movement;

    u16 distance_cm;

    u16 heart_rate_x10;
    u16 breath_rate_x10;

    u8 sleep_state;

    s16 pos_x_mm;
    s16 pos_y_mm;
    s16 pos_z_mm;

    u8 abnormal_state;

    /*
     * 由调用者传入本次数据真正更新的系统时间。
     * manager 自己不依赖 AC79 timer API，
     * 保持模块纯净。
     */
    u32 update_ms;
};

struct radar_sensor_data {
    u8 presence;
    u8 motion;
    u8 body_movement;

    u16 distance_cm;

    u16 heart_rate_x10;
    u16 breath_rate_x10;

    u8 heart_valid;
    u8 breath_valid;

    u8 sleep_state;

    s16 pos_x_mm;
    s16 pos_y_mm;
    s16 pos_z_mm;

    u8 abnormal_state;

    u32 last_update_ms;
};

struct radar_change_flags {
    u8 presence_changed;
    u8 motion_changed;
    u8 sleep_state_changed;
    u8 body_movement_changed;
    u8 distance_changed;
    u8 heart_rate_changed;
    u8 breath_rate_changed;
    u8 abnormal_state_changed;
    u8 any_changed;
};

struct radar_report_snapshot {
    struct radar_sensor_data sensor;

    u8 has_person;
    u8 bed_occupied;
    u8 has_valid_vitals;
    u8 has_fresh_sample;
    u8 has_meaningful_change;

    u32 sample_age_ms;
};

int radar_manager_init(void);

int radar_manager_update(
    const struct radar_manager_input *input
);

int radar_manager_get_sensor_data(
    struct radar_sensor_data *out
);

int radar_manager_get_change_flags(
    struct radar_change_flags *out
);

int radar_manager_get_report_snapshot(
    u32 now_ms,
    u32 max_age_ms,
    struct radar_report_snapshot *out
);

int radar_manager_mark_snapshot_consumed(void);

#endif