#pragma once

#include <DataTypes/Serializations/SimpleTextSerialization.h>

namespace DB
{

class SerializationArray final : public SimpleTextSerialization
{
private:
    SerializationPtr nested;

public:
    explicit SerializationArray(const SerializationPtr & nested_) : nested(nested_) {}

    void serializeBinary(const Field & field, WriteBuffer & ostr, const FormatSettings & settings) const override;
    void deserializeBinary(Field & field, ReadBuffer & istr, const FormatSettings & settings) const override;
    void serializeBinary(const IColumn & column, size_t row_num, WriteBuffer & ostr, const FormatSettings & settings) const override;
    void deserializeBinary(IColumn & column, ReadBuffer & istr, const FormatSettings & settings) const override;

    void serializeText(const IColumn & column, size_t row_num, WriteBuffer & ostr, const FormatSettings &) const override;
    void deserializeText(IColumn & column, ReadBuffer & istr, const FormatSettings &, bool whole) const override;
    bool tryDeserializeText(IColumn & column, ReadBuffer & istr, const FormatSettings &, bool whole) 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;
    bool tryDeserializeTextJSON(IColumn & column, ReadBuffer & istr, const FormatSettings &) const override;
    void serializeTextJSONPretty(const IColumn & column, size_t row_num, WriteBuffer & ostr, const FormatSettings & settings, size_t indent) 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 &) const override;
    bool tryDeserializeTextCSV(IColumn & column, ReadBuffer & istr, const FormatSettings &) const override;

    /** Streaming serialization of arrays is arranged in a special way:
      * - elements placed in a row are written/read without array sizes;
      * - the sizes are written/read in a separate stream,
      * This is necessary, because when implementing nested structures, several arrays can have common sizes.
      */

    void enumerateStreams(
        EnumerateStreamsSettings & settings,
        const StreamCallback & callback,
        const SubstreamData & data) const override;

    void serializeBinaryBulkStatePrefix(
            const IColumn & column,
            SerializeBinaryBulkSettings & settings,
            SerializeBinaryBulkStatePtr & state) const override;

    void serializeBinaryBulkStateSuffix(
            SerializeBinaryBulkSettings & settings,
            SerializeBinaryBulkStatePtr & state) const override;

    void deserializeBinaryBulkStatePrefix(
            DeserializeBinaryBulkSettings & settings,
            DeserializeBinaryBulkStatePtr & state,
            SubstreamsDeserializeStatesCache * cache) const override;

    void serializeBinaryBulkWithMultipleStreams(
            const IColumn & column,
            size_t offset,
            size_t limit,
            SerializeBinaryBulkSettings & settings,
            SerializeBinaryBulkStatePtr & state) const override;

    void deserializeBinaryBulkWithMultipleStreams(
        ColumnPtr & column,
        size_t limit,
        DeserializeBinaryBulkSettings & settings,
        DeserializeBinaryBulkStatePtr & state,
        SubstreamsCache * cache) const override;

    struct SubcolumnCreator : public ISubcolumnCreator
    {
        const ColumnPtr offsets;

        explicit SubcolumnCreator(const ColumnPtr & offsets_) : offsets(offsets_) {}

        DataTypePtr create(const DataTypePtr & prev) const override;
        SerializationPtr create(const SerializationPtr & prev) const override;
        ColumnPtr create(const ColumnPtr & prev) const override;
    };

private:
    template <typename ReturnType>
    ReturnType deserializeTextJSONImpl(IColumn & column, ReadBuffer & istr, const FormatSettings & settings) const;
};

}