#ifndef UDst_h
#define UDst_h

// ROOT headers
#include "TClonesArray.h"

// UniGen headers
#include "UArrays.h"

// Forward declarations
class UEvent;
class URun;
class UParticle;

//________________
class UDst {

 public:
  /// Default constructor
  UDst()  { /* emtpy */ }
  /// Destructor
  ~UDst() { /* emtpy */ }

  /// Set pointers to the TClonesArrays
  static void set(TClonesArray** array);
  /// Reset pointers to the TClonesArrays to 0
  static void unset();
  /// Return pointer to the i-th TClonesArray
  static TClonesArray* uArray(Int_t type) { return uArrays[type]; }
  /// Return pointer to the URun information
  static URun* run() { return (URun*)uArrays[UArrays::Run]->UncheckedAt(0); }
  /// Return pointer to the UEvent information
  static UEvent* event() { return (UEvent*)uArrays[UArrays::Event]->UncheckedAt(0); }
  /// Return pointer to the i-th particle
  static UParticle* particle(Int_t i) { return (UParticle*)uArrays[UArrays::Particle]->UncheckedAt(i); }
  /// Return number of particles in the current events
  static UInt_t numberOfParticles() { return uArrays[UArrays::Particle]->GetEntries(); }

  /// Print information
  static void print();
  /// Print run information
  static void printRunInfo();
  /// Print event information
  static void printEventInfo();
  /// Print particle information
  static void printParticles();

 private:
  /// Array of TClonesArrays
  static TClonesArray** uArrays;
};

#endif // #define UDst_h