// -*- indent-tabs-mode: nil -*-

#ifndef __ARC_DATAPOINTDIRECT_H__
#define __ARC_DATAPOINTDIRECT_H__

#include <list>
#include <string>

#include <arc/data/DataPoint.h>

#define MAX_PARALLEL_STREAMS 20
#define MAX_BLOCK_SIZE (10 * 1024 * 1024)

namespace Arc {

  class DataBuffer;
  class DataCallback;

  /// DataPointDirect represents "physical" data objects.
  /**
   * This class should never be used directly, instead inherit from it to
   * provide a class for a specific access protocol.
   * \ingroup data
   * \headerfile DataPointDirect.h arc/data/DataPointDirect.h
   */
  class DataPointDirect
    : public DataPoint {
  public:
    virtual ~DataPointDirect();

    virtual bool IsIndex() const;
    virtual bool IsStageable() const;

    virtual long long int BufSize() const;
    virtual int BufNum() const;

    virtual bool Local() const;
    virtual bool ReadOnly() const;

    virtual void ReadOutOfOrder(bool v);
    virtual bool WriteOutOfOrder() const;

    virtual void SetAdditionalChecks(bool v);
    virtual bool GetAdditionalChecks() const;

    virtual void SetSecure(bool v);
    virtual bool GetSecure() const;

    virtual void Passive(bool v);

    virtual void Range(unsigned long long int start = 0,
                       unsigned long long int end = 0);

    virtual int AddCheckSumObject(CheckSum *cksum);

    virtual const CheckSum* GetCheckSumObject(int index) const;

    virtual DataStatus Stat(std::list<FileInfo>& files,
                            const std::list<DataPoint*>& urls,
                            DataPointInfoType verb = INFO_TYPE_ALL);

    // Not supported for direct data points:
    virtual DataStatus Resolve(bool source);
    virtual DataStatus Resolve(bool source, const std::list<DataPoint*>& urls);
    virtual bool Registered() const;
    virtual DataStatus PreRegister(bool replication, bool force = false);
    virtual DataStatus PostRegister(bool replication);
    virtual DataStatus PreUnregister(bool replication);
    virtual DataStatus Unregister(bool all);
    virtual DataStatus Finalise(const std::string& error_msg, const std::string& dn);
    virtual bool AcceptsMeta() const;
    virtual bool ProvidesMeta() const;
    virtual const URL& CurrentLocation() const;
    virtual DataPoint* CurrentLocationHandle() const;
    virtual const std::string& CurrentLocationMetadata() const;
    virtual DataStatus CompareLocationMetadata() const;
    virtual bool NextLocation();
    virtual bool LocationValid() const;
    virtual bool HaveLocations() const;
    virtual bool LastLocation();
    virtual DataStatus AddLocation(const URL& url, const std::string& meta);
    virtual DataStatus RemoveLocation();
    virtual DataStatus RemoveLocations(const DataPoint& p);
    virtual DataStatus ClearLocations();
    virtual void SortLocations(const std::string& /* pattern */,
                               const URLMap& /* url_map */) {};

  protected:
    DataBuffer *buffer;
    long long int bufsize;
    int bufnum;
    bool local;
    bool readonly;
    bool linkable;
    bool is_secure;
    bool force_secure;
    bool force_passive;
    bool additional_checks;
    bool allow_out_of_order;
    unsigned long long int range_start;
    unsigned long long int range_end;
    std::list<CheckSum*> checksums;
    DataPointDirect(const URL& url, const UserConfig& usercfg, PluginArgument* parg);
  };

} // namespace Arc

#endif // __ARC_DATAPOINTDIRECT_H__