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#pragma once 
 
#include "consumer.h" 
#include "output.h" 
#include "scalar.h" 
#include "stream_type.h" 
 
#include <memory> 
 
namespace NYsonPull { 
    //! \brief YSON writer facade class
    //!
    //! Owns a YSON consumer and a corresponding output stream.
    //! Methods invoke corresponding \p NYsonPull::IConsumer methods and can be chained.
    class TWriter {
        THolder<NOutput::IStream> Stream_; 
        THolder<IConsumer> Impl_; 
 
    public:
        TWriter(
            THolder<NOutput::IStream> stream,
            THolder<IConsumer> impl)
            : Stream_{std::move(stream)} 
            , Impl_{std::move(impl)} { 
        }
 
        //! \brief Get a reference to underlying consumer.
        //!
        //! Useful with \p NYsonPull::bridge
        IConsumer& GetConsumer() { 
            return *Impl_; 
        }
 
        TWriter& BeginStream() { 
            Impl_->OnBeginStream(); 
            return *this;
        }
        TWriter& EndStream() { 
            Impl_->OnEndStream(); 
            return *this;
        }
 
        TWriter& BeginList() { 
            Impl_->OnBeginList(); 
            return *this;
        }
        TWriter& EndList() { 
            Impl_->OnEndList(); 
            return *this;
        }
 
        TWriter& BeginMap() { 
            Impl_->OnBeginMap(); 
            return *this;
        }
        TWriter& EndMap() { 
            Impl_->OnEndMap(); 
            return *this;
        }
 
        TWriter& BeginAttributes() { 
            Impl_->OnBeginAttributes(); 
            return *this;
        }
        TWriter& EndAttributes() { 
            Impl_->OnEndAttributes(); 
            return *this;
        }
 
        TWriter& Key(TStringBuf name) { 
            Impl_->OnKey(name); 
            return *this;
        }
 
        TWriter& Entity() { 
            Impl_->OnEntity(); 
            return *this;
        }
        TWriter& Boolean(bool value) { 
            Impl_->OnScalarBoolean(value); 
            return *this;
        }
        TWriter& Int64(i64 value) { 
            Impl_->OnScalarInt64(value); 
            return *this;
        }
        TWriter& UInt64(ui64 value) { 
            Impl_->OnScalarUInt64(value); 
            return *this;
        }
        TWriter& Float64(double value) { 
            Impl_->OnScalarFloat64(value); 
            return *this;
        }
        TWriter& String(TStringBuf value) { 
            Impl_->OnScalarString(value); 
            return *this;
        }
 
        TWriter& Scalar(const TScalar& value) { 
            Impl_->OnScalar(value); 
            return *this;
        }
        TWriter& Event(const TEvent& value) { 
            Impl_->OnEvent(value); 
            return *this;
        }
    };
 
    //! \brief Construct a writer for binary YSON format.
    TWriter MakeBinaryWriter( 
        THolder<NOutput::IStream> stream,
        EStreamType mode);
 
    //! \brief Construct a writer for text YSON format.
    TWriter MakeTextWriter( 
        THolder<NOutput::IStream> stream,
        EStreamType mode);
 
    //! \brief Construct a writer for pretty text YSON format.
    TWriter MakePrettyTextWriter( 
        THolder<NOutput::IStream> stream,
        EStreamType mode,
        size_t indent_size = 4);
 
}