#include "AP_Vehicle.h"

#include <AP_BLHeli/AP_BLHeli.h>
#include <AP_Common/AP_FWVersion.h>
#include <AP_Arming/AP_Arming.h>
#include <AP_Frsky_Telem/AP_Frsky_Parameters.h>
#include <AP_Mission/AP_Mission.h>
#include <AP_OSD/AP_OSD.h>

#define SCHED_TASK(func, rate_hz, max_time_micros) SCHED_TASK_CLASS(AP_Vehicle, &vehicle, func, rate_hz, max_time_micros)

/*
  2nd group of parameters
 */
const AP_Param::GroupInfo AP_Vehicle::var_info[] = {
#if HAL_RUNCAM_ENABLED
    // @Group: CAM_RC_
    // @Path: ../AP_Camera/AP_RunCam.cpp
    AP_SUBGROUPINFO(runcam, "CAM_RC_", 1, AP_Vehicle, AP_RunCam),
#endif

#if HAL_GYROFFT_ENABLED
    // @Group: FFT_
    // @Path: ../AP_GyroFFT/AP_GyroFFT.cpp
    AP_SUBGROUPINFO(gyro_fft, "FFT_",  2, AP_Vehicle, AP_GyroFFT),
#endif

#if HAL_VISUALODOM_ENABLED
    // @Group: VISO
    // @Path: ../AP_VisualOdom/AP_VisualOdom.cpp
    AP_SUBGROUPINFO(visual_odom, "VISO",  3, AP_Vehicle, AP_VisualOdom),
#endif
    // @Group: VTX_
    // @Path: ../AP_RCTelemetry/AP_VideoTX.cpp
    AP_SUBGROUPINFO(vtx, "VTX_",  4, AP_Vehicle, AP_VideoTX),

#if HAL_MSP_ENABLED
    // @Group: MSP
    // @Path: ../AP_MSP/AP_MSP.cpp
    AP_SUBGROUPINFO(msp, "MSP",  5, AP_Vehicle, AP_MSP),
#endif

#if HAL_WITH_FRSKY_TELEM_BIDIRECTIONAL
    // @Group: FRSKY_
    // @Path: ../AP_Frsky_Telem/AP_Frsky_Parameters.cpp
    AP_SUBGROUPINFO(frsky_parameters, "FRSKY_", 6, AP_Vehicle, AP_Frsky_Parameters),
#endif

#if GENERATOR_ENABLED
    // @Group: GEN_
    // @Path: ../AP_Generator/AP_Generator.cpp
    AP_SUBGROUPINFO(generator, "GEN_", 7, AP_Vehicle, AP_Generator),
#endif

#if HAL_EXTERNAL_AHRS_ENABLED
    // @Group: EAHRS
    // @Path: ../AP_ExternalAHRS/AP_ExternalAHRS.cpp
    AP_SUBGROUPINFO(externalAHRS, "EAHRS", 8, AP_Vehicle, AP_ExternalAHRS),
#endif

    AP_GROUPEND
};

// reference to the vehicle. using AP::vehicle() here does not work on clang
#if APM_BUILD_TYPE(APM_BUILD_UNKNOWN)
AP_Vehicle& vehicle = *AP_Vehicle::get_singleton();
#else
extern AP_Vehicle& vehicle;
#endif

/*
  setup is called when the sketch starts
 */
void AP_Vehicle::setup()
{
    // load the default values of variables listed in var_info[]
    AP_Param::setup_sketch_defaults();

    // initialise serial port
    serial_manager.init_console();

    hal.console->printf("\n\nInit %s"
                        "\n\nFree RAM: %u\n",
                        AP::fwversion().fw_string,
                        (unsigned)hal.util->available_memory());

    load_parameters();

    // initialise the main loop scheduler
    const AP_Scheduler::Task *tasks;
    uint8_t task_count;
    uint32_t log_bit;
    get_scheduler_tasks(tasks, task_count, log_bit);
    AP::scheduler().init(tasks, task_count, log_bit);

    // time per loop - this gets updated in the main loop() based on
    // actual loop rate
    G_Dt = scheduler.get_loop_period_s();

    // this is here for Plane; its failsafe_check method requires the
    // RC channels to be set as early as possible for maximum
    // survivability.
    set_control_channels();

    // initialise serial manager as early as sensible to get
    // diagnostic output during boot process.  We have to initialise
    // the GCS singleton first as it sets the global mavlink system ID
    // which may get used very early on.
    gcs().init();

    // initialise serial ports
    serial_manager.init();
    gcs().setup_console();

    // Register scheduler_delay_cb, which will run anytime you have
    // more than 5ms remaining in your call to hal.scheduler->delay
    hal.scheduler->register_delay_callback(scheduler_delay_callback, 5);

#if HAL_MSP_ENABLED
    // call MSP init before init_ardupilot to allow for MSP sensors
    msp.init();
#endif

#if HAL_EXTERNAL_AHRS_ENABLED
    // call externalAHRS init before init_ardupilot to allow for external sensors
    externalAHRS.init();
#endif

    // init_ardupilot is where the vehicle does most of its initialisation.
    init_ardupilot();
    gcs().send_text(MAV_SEVERITY_INFO, "ArduPilot Ready");

    // gyro FFT needs to be initialized really late
#if HAL_GYROFFT_ENABLED
    gyro_fft.init(AP::scheduler().get_loop_period_us());
#endif
#if HAL_RUNCAM_ENABLED
    runcam.init();
#endif
#if HAL_HOTT_TELEM_ENABLED
    hott_telem.init();
#endif
#if HAL_VISUALODOM_ENABLED
    // init library used for visual position estimation
    visual_odom.init();
#endif
    vtx.init();

#if AP_PARAM_KEY_DUMP
    AP_Param::show_all(hal.console, true);
#endif

    send_watchdog_reset_statustext();

#if GENERATOR_ENABLED
    generator.init();
#endif
}

void AP_Vehicle::loop()
{
    scheduler.loop();
    G_Dt = scheduler.get_loop_period_s();

    if (!done_safety_init) {
        /*
          disable safety if requested. This is delayed till after the
          first loop has run to ensure that all servos have received
          an update for their initial values. Otherwise we may end up
          briefly driving a servo to a position out of the configured
          range which could damage hardware
        */
        done_safety_init = true;
        BoardConfig.init_safety();
    }
}

/*
 fast loop callback for all vehicles. This will get called at the end of any vehicle-specific fast loop.
 */
void AP_Vehicle::fast_loop()
{
#if HAL_GYROFFT_ENABLED
    gyro_fft.sample_gyros();
#endif
}

/*
  common scheduler table for fast CPUs - all common vehicle tasks
  should be listed here, along with how often they should be called (in hz)
  and the maximum time they are expected to take (in microseconds)
 */
const AP_Scheduler::Task AP_Vehicle::scheduler_tasks[] = {
#if HAL_RUNCAM_ENABLED
    SCHED_TASK_CLASS(AP_RunCam,    &vehicle.runcam,         update,                   50, 50),
#endif
#if HAL_GYROFFT_ENABLED
    SCHED_TASK_CLASS(AP_GyroFFT,   &vehicle.gyro_fft,       update,                  400, 50),
    SCHED_TASK_CLASS(AP_GyroFFT,   &vehicle.gyro_fft,       update_parameters,         1, 50),
#endif
    SCHED_TASK(update_dynamic_notch,                   200,    200),
    SCHED_TASK_CLASS(AP_VideoTX,   &vehicle.vtx,            update,                    2, 100),
    SCHED_TASK(send_watchdog_reset_statustext,         0.1,     20),
#if GENERATOR_ENABLED
    SCHED_TASK_CLASS(AP_Generator, &vehicle.generator,      update,                   10,  50),
#endif
#if OSD_ENABLED
    SCHED_TASK(publish_osd_info, 1, 10),
#endif
};

void AP_Vehicle::get_common_scheduler_tasks(const AP_Scheduler::Task*& tasks, uint8_t& num_tasks)
{
    tasks = scheduler_tasks;
    num_tasks = ARRAY_SIZE(scheduler_tasks);
}

/*
 *  a delay() callback that processes MAVLink packets. We set this as the
 *  callback in long running library initialisation routines to allow
 *  MAVLink to process packets while waiting for the initialisation to
 *  complete
 */
void AP_Vehicle::scheduler_delay_callback()
{
#if APM_BUILD_TYPE(APM_BUILD_Replay)
    // compass.init() delays, so we end up here.
    return;
#endif

    static uint32_t last_1hz, last_50hz, last_5s;

    AP_Logger &logger = AP::logger();

    // don't allow potentially expensive logging calls:
    logger.EnableWrites(false);

    const uint32_t tnow = AP_HAL::millis();
    if (tnow - last_1hz > 1000) {
        last_1hz = tnow;
        gcs().send_message(MSG_HEARTBEAT);
        gcs().send_message(MSG_SYS_STATUS);
    }
    if (tnow - last_50hz > 20) {
        last_50hz = tnow;
        gcs().update_receive();
        gcs().update_send();
        _singleton->notify.update();
    }
    if (tnow - last_5s > 5000) {
        last_5s = tnow;
        if (AP_BoardConfig::in_config_error()) {
            gcs().send_text(MAV_SEVERITY_CRITICAL, "Config Error: fix problem then reboot");
        } else {
            gcs().send_text(MAV_SEVERITY_INFO, "Initialising ArduPilot");
        }
    }

    logger.EnableWrites(true);
}

// if there's been a watchdog reset, notify the world via a statustext:
void AP_Vehicle::send_watchdog_reset_statustext()
{
    if (!hal.util->was_watchdog_reset()) {
        return;
    }
    const AP_HAL::Util::PersistentData &pd = hal.util->last_persistent_data;
    gcs().send_text(MAV_SEVERITY_CRITICAL,
                    "WDG: T%d SL%u FL%u FT%u FA%x FTP%u FLR%x FICSR%u MM%u MC%u IE%u IEC%u TN:%.4s",
                    pd.scheduler_task,
                    pd.semaphore_line,
                    pd.fault_line,
                    pd.fault_type,
                    (unsigned)pd.fault_addr,
                    pd.fault_thd_prio,
                    (unsigned)pd.fault_lr,
                    (unsigned)pd.fault_icsr,
                    pd.last_mavlink_msgid,
                    pd.last_mavlink_cmd,
                    (unsigned)pd.internal_errors,
                    (unsigned)pd.internal_error_count,
                    pd.thread_name4
        );
}

bool AP_Vehicle::is_crashed() const
{
    if (AP::arming().is_armed()) {
        return false;
    }
    return AP::arming().last_disarm_method() == AP_Arming::Method::CRASH;
}

// @LoggerMessage: FTN
// @Description: Filter Tuning Messages
// @Field: TimeUS: microseconds since system startup
// @Field: NDn: number of active dynamic harmonic notches
// @Field: DnF1: dynamic harmonic notch centre frequency for motor 1
// @Field: DnF2: dynamic harmonic notch centre frequency for motor 2
// @Field: DnF3: dynamic harmonic notch centre frequency for motor 3
// @Field: DnF4: dynamic harmonic notch centre frequency for motor 4
void AP_Vehicle::write_notch_log_messages() const
{
    const float* notches = ins.get_gyro_dynamic_notch_center_frequencies_hz();
    AP::logger().Write(
        "FTN", "TimeUS,NDn,DnF1,DnF2,DnF3,DnF4", "s-zzzz", "F-----", "QBffff", AP_HAL::micros64(), ins.get_num_gyro_dynamic_notch_center_frequencies(),
            notches[0], notches[1], notches[2], notches[3]);
}

// reboot the vehicle in an orderly manner, doing various cleanups and
// flashing LEDs as appropriate
void AP_Vehicle::reboot(bool hold_in_bootloader)
{
    if (should_zero_rc_outputs_on_reboot()) {
        SRV_Channels::zero_rc_outputs();
    }

    // Notify might want to blink some LEDs:
    AP_Notify::flags.firmware_update = 1;
    notify.update();

    // force safety on
    hal.rcout->force_safety_on();

    // flush pending parameter writes
    AP_Param::flush();

    // do not process incoming mavlink messages while we delay:
    hal.scheduler->register_delay_callback(nullptr, 5);

    // delay to give the ACK a chance to get out, the LEDs to flash,
    // the IO board safety to be forced on, the parameters to flush, ...
    hal.scheduler->delay(200);

    hal.scheduler->reboot(hold_in_bootloader);
}

#if OSD_ENABLED
void AP_Vehicle::publish_osd_info()
{
    AP_Mission *mission = AP::mission();
    if (mission == nullptr) {
        return;
    }
    AP_OSD *osd = AP::osd();
    if (osd == nullptr) {
        return;
    }
    AP_OSD::NavInfo nav_info;
    if(!get_wp_distance_m(nav_info.wp_distance)) {
        return;
    }
    float wp_bearing_deg;
    if (!get_wp_bearing_deg(wp_bearing_deg)) {
        return;
    }
    nav_info.wp_bearing = (int32_t)wp_bearing_deg * 100; // OSD expects cd
    if (!get_wp_crosstrack_error_m(nav_info.wp_xtrack_error)) {
        return;
    }
    nav_info.wp_number = mission->get_current_nav_index();
    osd->set_nav_info(nav_info);
}
#endif

AP_Vehicle *AP_Vehicle::_singleton = nullptr;

AP_Vehicle *AP_Vehicle::get_singleton()
{
    return _singleton;
}

namespace AP {

AP_Vehicle *vehicle()
{
    return AP_Vehicle::get_singleton();
}

};