#include "areas.hpp"
#include "position_vector.hpp"
#include "serialization.hpp"

namespace vanetza
{
namespace geonet
{

constexpr std::size_t LongPositionVector::length_bytes;
constexpr std::size_t ShortPositionVector::length_bytes;

LongPositionVector::LongPositionVector() : position_accuracy_indicator(false)
{
}

GeodeticPosition LongPositionVector::position() const
{
    return GeodeticPosition {
        static_cast<units::GeoAngle>(latitude),
        static_cast<units::GeoAngle>(longitude)
    };
}

ShortPositionVector::ShortPositionVector(const LongPositionVector& lpv) :
    gn_addr(lpv.gn_addr), timestamp(lpv.timestamp),
    latitude(lpv.latitude), longitude(lpv.longitude)
{
}

bool operator==(const LongPositionVector& lhs, const LongPositionVector& rhs)
{
    return lhs.gn_addr == rhs.gn_addr
        && lhs.timestamp == rhs.timestamp
        && lhs.latitude == rhs.latitude
        && lhs.longitude == rhs.longitude
        && lhs.speed == rhs.speed
        && lhs.heading == rhs.heading
        && lhs.position_accuracy_indicator == rhs.position_accuracy_indicator;
}

bool operator!=(const LongPositionVector& lhs, const LongPositionVector& rhs)
{
    return !(lhs == rhs);
}

bool operator==(const ShortPositionVector& lhs, const ShortPositionVector& rhs)
{
    return lhs.gn_addr == rhs.gn_addr
        && lhs.timestamp == rhs.timestamp
        && lhs.latitude == rhs.latitude
        && lhs.longitude == rhs.longitude;
}

bool operator!=(const ShortPositionVector& lhs, const ShortPositionVector& rhs)
{
    return !(lhs == rhs);
}

bool is_empty(const LongPositionVector& pv)
{
    static const LongPositionVector zero;
    return pv == zero;
}

bool is_valid(const LongPositionVector& pv)
{
    static const geo_angle_i32t limit_lat { 90.0 * units::degree };
    static const geo_angle_i32t limit_lon { 180.0 * units::degree };
    static const heading_u16t limit_hdg { 360.0 * units::degree };

    if (is_empty(pv)) {
         return false;
    } else if (pv.latitude < -limit_lat || pv.latitude > limit_lat) {
         return false;
    } else if (pv.longitude < -limit_lon || pv.longitude > limit_lon) {
         return false;
    } else if (pv.heading > limit_hdg) {
         return false;
    }

    return true;
}

void serialize(const LongPositionVector& lpv, OutputArchive& ar)
{
    serialize(lpv.gn_addr, ar);
    serialize(lpv.timestamp, ar);
    serialize(lpv.latitude, ar);
    serialize(lpv.longitude, ar);
    uint16_t paiAndSpeed = lpv.speed.value().raw();
    paiAndSpeed |= lpv.position_accuracy_indicator ?  0x8000 : 0x0000;
    serialize(host_cast(paiAndSpeed), ar);
    serialize(lpv.heading, ar);
}

void deserialize(LongPositionVector& lpv, InputArchive& ar)
{
    deserialize(lpv.gn_addr, ar);
    deserialize(lpv.timestamp, ar);
    deserialize(lpv.latitude, ar);
    deserialize(lpv.longitude, ar);
    uint16_t paiAndSpeed = 0;
    deserialize(paiAndSpeed, ar);
    lpv.position_accuracy_indicator = ((paiAndSpeed & 0x8000) != 0);
    lpv.speed = LongPositionVector::speed_u15t::from_value(paiAndSpeed);
    deserialize(lpv.heading, ar);
}

} // namespace geonet
} // namespace vanetza