#pragma once

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

#include "../include/typedefs.h"
#include "../include/RelationalWriter.h"
#include "DataTypeWriterBase.h"
#include "BooleanDataTypeWriter.h"
#include "IntegerDataTypeWriter.h"
#include "StringDataTypeWriter.h"

namespace relpipe {
namespace writer {

class StreamRelationalWriter : public RelationalWriter {
private:
	std::ostream &output;
	BooleanDataTypeWriter booleanWriter;
	IntegerDataTypeWriter integerWriter;
	StringDataTypeWriter stringWriter;
	vector<DataTypeWriterBase*> writers = {&booleanWriter, &integerWriter, &stringWriter};

	void writeString(const string_t &stringValue, const integer_t typeId) {
		for (DataTypeWriterBase* writer : writers) if (writer->supports(typeId)) return writer->writeString(output, stringValue);
		throw RelpipeWriterException(L"Unsupported data type: " + typeId);
	}

public:

	StreamRelationalWriter(std::ostream &output) :
	output(output) {
	}

	integer_t toTypeId(const string_t typeCode) override {
		for (DataTypeWriterBase* writer : writers) if (writer->supports(typeCode)) return writer->getTypeId();
		throw RelpipeWriterException(L"Unsupported data type: " + typeCode);
	}

	string_t toTypeCode(const integer_t typeId) override {
		for (DataTypeWriterBase* writer : writers) if (writer->supports(typeId)) return writer->getTypeCode();
		throw RelpipeWriterException(L"Unsupported data type: " + typeId);
	}

	void startRelation(std::vector<std::pair<string_t, string_t> > attributes, boolean_t writeHeader) override {
		output << "startRelation(…)" << std::endl;
	}

	void writeRecord(std::vector<string_t> attributes) override {
		output << "writeRecord(…)" << std::endl;
	}

};

}
}