#pragma once

#include "dtcore/inc/dtstream.h"

namespace dt
{

    struct _json_value;
    class JsonValue;

    class StreamJsonInput : public Stream
    {
    public:
        DT_CORE_DLL_ENTRY StreamJsonInput(const String& document);
        DT_CORE_DLL_ENTRY StreamJsonInput(const JsonValue& jsonVal);
        DT_CORE_DLL_ENTRY ~StreamJsonInput();

        DT_CORE_DLL_ENTRY virtual void SerializeBinary(const ByteBuffer& data) override;
        DT_CORE_DLL_ENTRY virtual bool SerializeBinary(ByteBuffer& data) override;

        DT_CORE_DLL_ENTRY virtual void SerializeString(const String& data) override;
        DT_CORE_DLL_ENTRY virtual bool SerializeString(String& data) override;

        DT_CORE_DLL_ENTRY virtual void SerializeNumeral(const S8& data) override;
        DT_CORE_DLL_ENTRY virtual bool SerializeNumeral(S8& data) override;

        DT_CORE_DLL_ENTRY virtual void SerializeNumeral(const S16& data) override;
        DT_CORE_DLL_ENTRY virtual bool SerializeNumeral(S16& data) override;

        DT_CORE_DLL_ENTRY virtual void SerializeNumeral(const S32& data) override;
        DT_CORE_DLL_ENTRY virtual bool SerializeNumeral(S32& data) override;

        DT_CORE_DLL_ENTRY virtual void SerializeNumeral(const S64& data) override;
        DT_CORE_DLL_ENTRY virtual bool SerializeNumeral(S64& data) override;

        DT_CORE_DLL_ENTRY virtual void SerializeNumeral(const U8& data) override;
        DT_CORE_DLL_ENTRY virtual bool SerializeNumeral(U8& data) override;

        DT_CORE_DLL_ENTRY virtual void SerializeNumeral(const U16& data) override;
        DT_CORE_DLL_ENTRY virtual bool SerializeNumeral(U16& data) override;

        DT_CORE_DLL_ENTRY virtual void SerializeNumeral(const U32& data) override;
        DT_CORE_DLL_ENTRY virtual bool SerializeNumeral(U32& data) override;

        DT_CORE_DLL_ENTRY virtual void SerializeNumeral(const U64& data) override;
        DT_CORE_DLL_ENTRY virtual bool SerializeNumeral(U64& data) override;

        DT_CORE_DLL_ENTRY virtual void SerializeNumeral(const float& data) override;
        DT_CORE_DLL_ENTRY virtual bool SerializeNumeral(float& data) override;

        DT_CORE_DLL_ENTRY virtual void SerializeNumeral(const double& data) override;
        DT_CORE_DLL_ENTRY virtual bool SerializeNumeral(double& data) override;

        DT_CORE_DLL_ENTRY virtual void SerializeBool(const bool& data) override;
        DT_CORE_DLL_ENTRY virtual bool SerializeBool(bool& data) override;

        DT_CORE_DLL_ENTRY virtual void SerializeSize(const SizeT& data) override;
        DT_CORE_DLL_ENTRY virtual bool SerializeSize(SizeT& data) override;

        DT_CORE_DLL_ENTRY virtual bool SerializeMember(const char* name) override;

        DT_CORE_DLL_ENTRY virtual void SerializeKey(const String& name) override;
        DT_CORE_DLL_ENTRY virtual bool SerializeKey(String& name) override;

        DT_CORE_DLL_ENTRY virtual void SerializeVersion(U8& data) override;

        DT_CORE_DLL_ENTRY virtual void ObjectStart(const void* pointer) override;
        DT_CORE_DLL_ENTRY virtual void ObjectEnd(const void* pointer) override;

        DT_CORE_DLL_ENTRY virtual void ListStart(const void* pointer) override;
        DT_CORE_DLL_ENTRY virtual void ListEnd(const void* pointer) override;

        DT_CORE_DLL_ENTRY virtual bool IsInput() const override;

        DT_CORE_DLL_ENTRY bool HasSucceeded() const;

    private:
        friend class HttpServerImpl;

        StreamJsonInput(_json_value* document);

    private:
        struct Scope
        {
            Scope(const void* pointer, _json_value* value)
                : m_Pointer(pointer)
                , m_LastMemberIndex(0)
                , m_Value(value)
            {}

            const void* m_Pointer;
            int m_LastMemberIndex;
            _json_value* m_Value;
        };


        Vector<Scope> m_ScopeStack;
        _json_value* m_Document;
        bool m_Success;
        bool m_Owner;

        Scope& GetTopScope();
        bool GetCurrentValue(_json_value** value);
        void Fail();
        template <typename T> bool SerializeIntegerOrDouble(T& data);
    };

}