#ifndef YAP_PACKAGES_CLPBN_HORUS_BAYESBALLGRAPH_H_
#define YAP_PACKAGES_CLPBN_HORUS_BAYESBALLGRAPH_H_

#include <vector>
#include <unordered_map>

#include "Var.h"
#include "Horus.h"

namespace Horus {

class BBNode : public Var {
  public:
    BBNode (Var* v) : Var (v), visited_(false),
        markedOnTop_(false), markedOnBottom_(false) { }

    const std::vector<BBNode*>& childs (void) const { return childs_; }

    std::vector<BBNode*>& childs (void) { return childs_; }

    const std::vector<BBNode*>& parents (void) const { return parents_; }

    std::vector<BBNode*>& parents (void) { return parents_; }

    void addParent (BBNode* p) { parents_.push_back (p); }

    void addChild (BBNode* c) { childs_.push_back (c); }

    bool isVisited (void) const { return visited_; }

    void setAsVisited (void) { visited_ = true; }

    bool isMarkedOnTop (void) const { return markedOnTop_; }

    void markOnTop (void) { markedOnTop_ = true; }

    bool isMarkedOnBottom (void) const { return markedOnBottom_; }

    void markOnBottom (void) { markedOnBottom_ = true; }

    void clear (void) { visited_ = markedOnTop_ = markedOnBottom_ = false; }

  private:
    bool visited_;
    bool markedOnTop_;
    bool markedOnBottom_;

    std::vector<BBNode*> childs_;
    std::vector<BBNode*> parents_;
};


class BayesBallGraph {
  public:
    BayesBallGraph (void) { }

    bool empty (void) const { return nodes_.empty(); }

    void addNode (BBNode* n);

    void addEdge (VarId vid1, VarId vid2);

    const BBNode* getNode (VarId vid) const;

    BBNode* getNode (VarId vid);

    void setIndexes (void);

    void clear (void);

    void exportToGraphViz (const char*);

  private:
    std::vector<BBNode*> nodes_;

    std::unordered_map<VarId, BBNode*> varMap_;
};

}  // namespace Horus

#endif  // YAP_PACKAGES_CLPBN_HORUS_BAYESBALLGRAPH_H_