#pragma once

#include <AggregateFunctions/IAggregateFunction_fwd.h>

#include <DataTypes/Serializations/ISerialization.h>


namespace DB
{

class SerializationAggregateFunction final : public ISerialization
{
private:
    AggregateFunctionPtr function;
    String type_name;
    size_t version;

public:
    static constexpr bool is_parametric = true;

    SerializationAggregateFunction(const AggregateFunctionPtr & function_, String type_name_, size_t version_)
        : function(function_), type_name(std::move(type_name_)), version(version_) {}

    /// NOTE These two functions for serializing single values are incompatible with the functions below.
    void serializeBinary(const Field & field, WriteBuffer & ostr, const FormatSettings &) const override;
    void deserializeBinary(Field & field, ReadBuffer & istr, const FormatSettings &) const override;

    void serializeBinary(const IColumn & column, size_t row_num, WriteBuffer & ostr, const FormatSettings &) const override;
    void deserializeBinary(IColumn & column, ReadBuffer & istr, const FormatSettings &) const override;
    void serializeBinaryBulk(const IColumn & column, WriteBuffer & ostr, size_t offset, size_t limit) const override;
    void deserializeBinaryBulk(IColumn & column, ReadBuffer & istr, size_t limit, double avg_value_size_hint) const override;
    void serializeText(const IColumn & column, size_t row_num, WriteBuffer & ostr, const FormatSettings &) const override;
    void serializeTextEscaped(const IColumn & column, size_t row_num, WriteBuffer & ostr, const FormatSettings &) const override;
    void deserializeTextEscaped(IColumn & column, ReadBuffer & istr, const FormatSettings &) const override;
    void serializeTextQuoted(const IColumn & column, size_t row_num, WriteBuffer & ostr, const FormatSettings &) const override;
    void deserializeTextQuoted(IColumn & column, ReadBuffer & istr, const FormatSettings &) const override;
    void deserializeWholeText(IColumn & column, ReadBuffer & istr, const FormatSettings &) const override;

    void serializeTextJSON(const IColumn & column, size_t row_num, WriteBuffer & ostr, const FormatSettings &) const override;
    void deserializeTextJSON(IColumn & column, ReadBuffer & istr, const FormatSettings &) const override;
    void serializeTextXML(const IColumn & column, size_t row_num, WriteBuffer & ostr, const FormatSettings &) const override;
    void serializeTextCSV(const IColumn & column, size_t row_num, WriteBuffer & ostr, const FormatSettings &) const override;
    void deserializeTextCSV(IColumn & column, ReadBuffer & istr, const FormatSettings & settings) const override;
};

}