#include "AP_Stats.h"

// table of user settable parameters
const AP_Param::GroupInfo AP_Stats::var_info[] = {

    // @Param: _BOOTCNT
    // @DisplayName: Boot Count
    // @Description: Number of times board has been booted
    // @User: Standard
    AP_GROUPINFO("_BOOTCNT",    0, AP_Stats, params.bootcount, 0),

    // @Param: _FLTTIME
    // @DisplayName: Total FlightTime
    // @Description: Total FlightTime (seconds)
    // @User: Standard
    AP_GROUPINFO("_FLTTIME",    1, AP_Stats, params.flttime, 0),

    // @Param: _RUNTIME
    // @DisplayName: Total RunTime
    // @Description: Total time autopilot has run
    // @User: Standard
    AP_GROUPINFO("_RUNTIME",    2, AP_Stats, params.runtime, 0),

    AP_GROUPEND
};

void AP_Stats::init()
{
    params.bootcount.set_and_save(params.bootcount+1);

    // initialise our variables from parameters:
    flttime = params.flttime;
    runtime = params.runtime;
}


void AP_Stats::flush()
{
    params.flttime.set_and_save(flttime);
    params.runtime.set_and_save(runtime);
}

void AP_Stats::update_flighttime()
{
    if (_flying_ms) {
        const uint32_t now = AP_HAL::millis();
        const uint32_t delta = (now - _flying_ms)/1000;
        flttime += delta;
        _flying_ms += delta*1000;
    }
}

void AP_Stats::update_runtime()
{
    const uint32_t now = AP_HAL::millis();
    const uint32_t delta = (now - _last_runtime_ms)/1000;
    runtime += delta;
    _last_runtime_ms += delta*1000;
}

void AP_Stats::update()
{
    const uint32_t now_ms = AP_HAL::millis();
    if (now_ms -  last_flush_ms > flush_interval_ms) {
        update_flighttime();
        update_runtime();
        flush();
        last_flush_ms = now_ms;
    }
}

void AP_Stats::set_flying(const bool is_flying)
{
    if (is_flying) {
        if (!_flying_ms) {
            _flying_ms = AP_HAL::millis();
        }
    } else {
        update_flighttime();
        _flying_ms = 0;
    }
}