#ifndef QPDF_DICTIONARY_HH
#define QPDF_DICTIONARY_HH

#include <qpdf/QPDFValue.hh>

#include <map>
#include <set>

#include <qpdf/QPDFObjectHandle.hh>

class QPDF_Dictionary: public QPDFValue
{
  public:
    ~QPDF_Dictionary() override = default;
    static std::shared_ptr<QPDFObject> create(std::map<std::string, QPDFObjectHandle> const& items);
    static std::shared_ptr<QPDFObject> create(std::map<std::string, QPDFObjectHandle>&& items);
    std::shared_ptr<QPDFObject> copy(bool shallow = false) override;
    std::string unparse() override;
    void writeJSON(int json_version, JSON::Writer& p) override;
    void disconnect() override;

    // hasKey() and getKeys() treat keys with null values as if they aren't there.  getKey() returns
    // null for the value of a non-existent key.  This is as per the PDF spec.
    bool hasKey(std::string const&);
    QPDFObjectHandle getKey(std::string const&);
    std::set<std::string> getKeys();
    std::map<std::string, QPDFObjectHandle> const& getAsMap() const;

    // If value is null, remove key; otherwise, replace the value of key, adding it if it does not
    // exist.
    void replaceKey(std::string const& key, QPDFObjectHandle value);
    // Remove key, doing nothing if key does not exist
    void removeKey(std::string const& key);

  private:
    QPDF_Dictionary(std::map<std::string, QPDFObjectHandle> const& items);
    QPDF_Dictionary(std::map<std::string, QPDFObjectHandle>&& items);
    std::map<std::string, QPDFObjectHandle> items;
};

#endif // QPDF_DICTIONARY_HH