/****************************************************************************
 *    Copyright (C) 2009-2020 Savoir-faire Linux Inc.                          *
 *   Author : Jérémy Quentin <jeremy.quentin@savoirfairelinux.com>          *
 *            Emmanuel Lepage Vallee <emmanuel.lepage@savoirfairelinux.com> *
 *                                                                          *
 *   This library is free software; you can redistribute it and/or          *
 *   modify it under the terms of the GNU Lesser General Public             *
 *   License as published by the Free Software Foundation; either           *
 *   version 2.1 of the License, or (at your option) any later version.     *
 *                                                                          *
 *   This library is distributed in the hope that it will be useful,        *
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of         *
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU      *
 *   Lesser General Public License for more details.                        *
 *                                                                          *
 *   You should have received a copy of the GNU General Public License      *
 *   along with this program.  If not, see <http://www.gnu.org/licenses/>.  *
 ***************************************************************************/
#pragma once

// Qt
#include <QtCore/QMetaType>
#include <QtCore/QMap>
#include <QtCore/QVector>
#include <QtCore/QString>
#include <QtCore/QDebug>
#include <QtCore/QDateTime>

// Typedefs (required to avoid '<' and '>' in the DBus XML)
typedef QMap<QString, QString> MapStringString;
typedef QMap<QString, int> MapStringInt;
typedef QVector<int> VectorInt;
typedef QVector<uint> VectorUInt;
typedef QVector<qulonglong> VectorULongLong;
typedef QVector<QMap<QString, QString>> VectorMapStringString;
typedef QVector<QString> VectorString;
typedef QMap<QString, QMap<QString, QVector<QString>>> MapStringMapStringVectorString;
typedef QMap<QString, QVector<QString>> MapStringVectorString;
typedef QMap<QString, QMap<QString, QStringList>> MapStringMapStringStringList;
typedef QMap<QString, QStringList> MapStringStringList;
typedef QVector<QByteArray> VectorVectorByte;

// Adapted from libring DRing::DataTransferInfo
struct DataTransferInfo
{
    QString accountId;
    quint32 lastEvent;
    quint32 flags;
    qlonglong totalSize;
    qlonglong bytesProgress;
    QString peer;
    QString displayName;
    QString path;
    QString mimetype;
};

struct Message
{
    QString from;
    MapStringString payloads;
    quint64 received;
};

typedef QVector<Message> messages;

/**
 * This function add a safe way to get an enum class size
 * @note it cannot be "const" due to some compiler issues
 * @note it cannot be unsigned to avoid some compiler warnings
 */
template<typename A>
constexpr int
enum_class_size()
{
    return static_cast<int>(A::COUNT__);
}

#ifdef LRC_IMPORT
#define LIB_EXPORT Q_DECL_IMPORT
#else
#if defined(_MSC_VER)
#define LIB_EXPORT
#else
#define LIB_EXPORT Q_DECL_EXPORT
#endif
#endif

// Doesn't work
#if ((__GNUC_MINOR__ > 8) || (__GNUC_MINOR__ == 8))
#define STRINGIFY(x) #x
#define IGNORE_NULL(content) \
    _Pragma(STRINGIFY(GCC diagnostic ignored "-Wzero-as-null-pointer-constant")) content
#else
#define IGNORE_NULL(content) content
#endif // ENABLE_IGNORE_NULL

/**
 * Create a safe pack of flags from an enum class.
 *
 * This class exist to ensure all sources come from the same enum and that it is
 * never accidentally accidentally into an integer.
 *
 * This assume that the enum has been setup as flags.
 */
template<class T>
class LIB_EXPORT FlagPack
{
public:
    FlagPack()
        : m_Flags(0)
    {}
    FlagPack(const T& base)
        : m_Flags(static_cast<uint>(base))
    {}
    FlagPack(const FlagPack<T>& other)
        : m_Flags(other.m_Flags)
    {}

    // Operator
    FlagPack<T>& operator|(const T& other)
    {
        m_Flags |= static_cast<uint>(other);
        return *this;
    }

    FlagPack<T>& operator|(const FlagPack<T>& other)
    {
        m_Flags |= other.m_Flags;
        return *this;
    }

    FlagPack<T>& operator|=(const T& other)
    {
        m_Flags |= static_cast<uint>(other);
        return *this;
    }

    FlagPack<T>& operator|=(const FlagPack<T>& other)
    {
        m_Flags |= other.m_Flags;
        return *this;
    }

    FlagPack<T>& operator^=(const T& other)
    {
        m_Flags ^= static_cast<uint>(other);
        return *this;
    }

    FlagPack<T>& operator^=(const FlagPack<T>& other)
    {
        m_Flags ^= other.m_Flags;
        return *this;
    }

    FlagPack<T> operator&(const T& other) const
    {
        return FlagPack<T>(m_Flags & static_cast<uint>(other));
    }

    FlagPack<T> operator&(const FlagPack<T>& other) const
    {
        return FlagPack<T>(m_Flags & other.m_Flags);
    }

    FlagPack<T>& operator=(const FlagPack<T>& other)
    {
        m_Flags = other.m_Flags;
        return *this;
    }

    bool operator!=(const T& other) const { return m_Flags != static_cast<uint>(other); }

    bool operator==(const T& other) const { return m_Flags == static_cast<uint>(other); }

    bool operator==(const FlagPack<T>& other) const { return m_Flags == other.m_Flags; }

    bool operator!() const { return !m_Flags; }

    operator bool() const { return m_Flags != 0; }

    uint value() const { return m_Flags; }

private:
    FlagPack(uint base)
        : m_Flags(base)
    {}
    uint m_Flags;
};

#ifdef _MSC_VER
#define DO_PRAGMA(x)     /*do nothing*/
#define __attribute__(A) /*do nothing*/
#include <ciso646>
#else
#define DO_PRAGMA(x) _Pragma(#x)
#endif // _MSC_VER

// Globally disable the "-Wunused-function" warning for GCC
// refs: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=55578
#if ((__GNUC_MINOR__ > 8) || (__GNUC_MINOR__ == 8))
#pragma GCC diagnostic ignored "-Wunused-function"
#endif

#define DECLARE_ENUM_FLAGS(T) \
    DO_PRAGMA(GCC diagnostic push) \
    DO_PRAGMA(GCC diagnostic ignored "-Wunused-function") \
    __attribute__((unused)) static FlagPack<T> operator|(const T& first, const T& second) \
    { \
        FlagPack<T> p(first); \
        return p | second; \
    } \
    DO_PRAGMA(GCC diagnostic pop)

#include <functional>
typedef std::function<void()> MigrationCb;