#include "AbstractTag.h"

#include "TagEnd.h"
#include "TagByte.h"
#include "TagShort.h"
#include "TagInt.h"
#include "TagLong.h"
#include "TagFloat.h"
#include "TagDouble.h"

#include <QtCore/QDataStream>

AbstractTag::AbstractTag(const quint8 id) : m_id(id) {}

const quint8 AbstractTag::id() const {
    return m_id;
}

const quint8 AbstractTag::extractId(const QByteArray &data) {
    QDataStream stream(data);

    quint8 id;
    stream >> id;

    return id;
}
AbstractTag *AbstractTag::extractEmptyTag(const QByteArray &data) {
    switch (extractId(data)) {
        case TagEnd::ID:
            return new TagEnd();

        case TagByte::ID:
            return new TagByte();

        case TagShort::ID:
            return new TagShort();

        case TagInt::ID:
            return new TagInt();

        case TagLong::ID:
            return new TagLong();

        case TagFloat::ID:
            return new TagFloat();

        case TagDouble::ID:
            return new TagDouble();
    }

    return nullptr;
}

QDataStream &operator<<(QDataStream &data, const AbstractTag &tag) {
    data << tag.id();
    tag.writeToData(data);

    return data;
}
QDataStream &operator>>(QDataStream &data, AbstractTag &tag) {
    quint8 id;
    data >> id;

    tag.readFromData(data);

    return data;
}