// Copyright (c) 2013-2015 IONU Security, Inc. All rights reserved.
// Copyright (c) 2016 Sequence Logic, Inc. All rights reserved.
//
// JSON utility class

#ifndef eyejson_h
#define eyejson_h

#include <string>
#include <iostream>
#include <vector>

#ifndef LIBEYE_DLL
#ifdef WIN32
#  ifdef DLLEXPORT
#    define LIBEYE_DLL __declspec(dllexport)
#  else
#    define LIBEYE_DLL __declspec(dllimport)
#  endif
#else
#define LIBEYE_DLL
#endif
#endif

#ifdef ANDROID
#include "stdlib.h"
#endif

namespace sequencelogic {

// Enumeration of the JSON types and JSON utility classes
enum JSON_TYPE {
   JSON_NULL,
   JSON_ARRAY,
   JSON_BOOL,
   JSON_FLOAT,
   JSON_INT,
   JSON_OBJECT,
   JSON_STRING
};

class EyeJSONNode
{
 public:
   virtual ~EyeJSONNode ();
   virtual void GetJSONString (std::string& json) = 0;
   virtual char* GetKey () = 0;
   virtual void ReplaceKey (const char* key) = 0;
   JSON_TYPE GetType () {return _type;}
 protected:
   char* ParseString (const char* str);
   int ProcessEscape (const char* jsonstr, char* value, int* escbytes);
   JSON_TYPE _type;
};

// Scalar type (BOOL, FLOAT, INT, STRING, NULL)
class EyeJSONScalar : public EyeJSONNode
{
 public:
   LIBEYE_DLL EyeJSONScalar (const char* key, const char* value, JSON_TYPE type);
   LIBEYE_DLL ~EyeJSONScalar ();
   LIBEYE_DLL void GetJSONString (std::string& json);
   LIBEYE_DLL char* GetKey () {return _key;}
   LIBEYE_DLL char* GetValue () {return _value;}
   LIBEYE_DLL int GetIntValue () {return atoi(_value);}
   LIBEYE_DLL void ReplaceKey (const char* key);
   LIBEYE_DLL void ReplaceValue (const char* value);
 private:
   char* _key;
   char* _value;
};

// Container type (ARRAY, OBJECT)
class EyeJSONObject : public EyeJSONNode
{
 public:
   LIBEYE_DLL EyeJSONObject (const char* jsonstr);
   LIBEYE_DLL EyeJSONObject (const char* key, JSON_TYPE type, EyeJSONObject* parent);
   LIBEYE_DLL ~EyeJSONObject ();
   LIBEYE_DLL bool AddMember (EyeJSONNode* member);
   LIBEYE_DLL bool RemoveMember (const char* member);
   LIBEYE_DLL bool RemoveMember (size_t member);
   LIBEYE_DLL bool UpdateMember (EyeJSONNode* member);
   LIBEYE_DLL EyeJSONNode* GetMember (const char* member);
   LIBEYE_DLL EyeJSONNode* GetMember (size_t member);
   size_t GetNumMembers () {return _members.size();}
   LIBEYE_DLL void Empty ();
   LIBEYE_DLL void GetJSONString (std::string& json);
   LIBEYE_DLL std::string Stringify ();
   EyeJSONObject* GetParent () {return _parent;}
   char* GetKey () {return _key;}
   LIBEYE_DLL void ReplaceKey (const char* key);
 private:
   char* _key;
   EyeJSONObject* _parent;
   std::vector<EyeJSONNode*> _members;
};

} //namespace sequencelogic
#endif