/*

  Copyright (c) 2015, 2016 Hubert Denkmair

  This file is part of cangaroo.

  cangaroo is free software: you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation, either version 2 of the License, or
  (at your option) any later version.

  cangaroo 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 General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with cangaroo.  If not, see <http://www.gnu.org/licenses/>.

*/

#pragma once

#include "../CanInterface.h"
#include <linux/can/netlink.h>

class SocketCanDriver;

typedef struct {
    bool supports_canfd;
    bool supports_timing;
    uint32_t state;
    uint32_t base_freq;
    uint32_t sample_point;
    uint32_t ctrl_mode;
    uint32_t restart_ms;
    struct can_bittiming bit_timing;
} can_config_t;

typedef struct {
    uint32_t can_state;

    uint64_t rx_count;
    int rx_errors;
    uint64_t rx_overruns;

    uint64_t tx_count;
    int tx_errors;
    uint64_t tx_dropped;
} can_status_t;

class SocketCanInterface: public CanInterface {
public:
    SocketCanInterface(SocketCanDriver *driver, int index, QString name);
	virtual ~SocketCanInterface();

    virtual QString getName() const;
    void setName(QString name);

    virtual QList<CanTiming> getAvailableBitrates();

    virtual void applyConfig(const MeasurementInterface &mi);
    virtual bool readConfig();
    virtual bool readConfigFromLink(struct rtnl_link *link);

    bool supportsTimingConfiguration();
    bool supportsCanFD();
    bool supportsTripleSampling();

    virtual unsigned getBitrate();
    virtual uint32_t getCapabilities();


	virtual void open();
    virtual bool isOpen();
	virtual void close();

    virtual void sendMessage(const CanMessage &msg);
    virtual bool readMessage(CanMessage &msg, unsigned int timeout_ms);

    virtual bool updateStatistics();
    virtual uint32_t getState();
    virtual int getNumRxFrames();
    virtual int getNumRxErrors();
    virtual int getNumRxOverruns();

    virtual int getNumTxFrames();
    virtual int getNumTxErrors();
    virtual int getNumTxDropped();


    int getIfIndex();

private:
    typedef enum {
        ts_mode_SIOCSHWTSTAMP,
        ts_mode_SIOCGSTAMPNS,
        ts_mode_SIOCGSTAMP
    } ts_mode_t;

    int _idx;
    bool _isOpen;
	int _fd;
    QString _name;

    can_config_t _config;
    can_status_t _status;
    ts_mode_t _ts_mode;

    const char *cname();
    bool updateStatus();

    QString buildIpRouteCmd(const MeasurementInterface &mi);
    QStringList buildCanIfConfigArgs(const MeasurementInterface &mi);
};