#include "FieldNames.h"

#include <map>

#include <boost/thread/mutex.hpp>
#include <boost/lexical_cast.hpp>


// These must stay at the top of this file
std::map<int, SField::ptr> SField::codeToField;
boost::mutex SField::mapMutex;

SField sfInvalid(-1), sfGeneric(0);
SField sfLedgerEntry(FIELD_CODE(STI_LEDGERENTRY, 1), STI_LEDGERENTRY, 1, "LedgerEntry");
SField sfTransaction(FIELD_CODE(STI_TRANSACTION, 1), STI_TRANSACTION, 1, "Transaction");
SField sfValidation(FIELD_CODE(STI_VALIDATION, 1), STI_VALIDATION, 1, "Validation");

#define FIELD(name, type, index) SField sf##name(FIELD_CODE(STI_##type, index), STI_##type, index, #name);
#define TYPE(name, type, index)
#include "SerializeProto.h"
#undef FIELD
#undef TYPE


SField::ref SField::getField(int code)
{
	int type = code >> 16;
	int field = code % 0xffff;

	if ((type <= 0) || (type >= 256) || (field <= 0) || (field >= 256))
		return sfInvalid;

	boost::mutex::scoped_lock sl(mapMutex);

	std::map<int, SField::ptr>::iterator it = codeToField.find(code);
	if (it != codeToField.end())
		return *(it->second);

	switch (type)
	{ // types we are willing to dynamically extend

#define FIELD(name, type, index)
#define TYPE(name, type, index) case STI_##type:
#include "SerializeProto.h"
#undef FIELD
#undef TYPE

			break;
		default:
			return sfInvalid;
	}

	return *(new SField(code, static_cast<SerializedTypeID>(type), field, NULL));
}

int SField::compare(SField::ref f1, SField::ref f2)
{ // -1 = f1 comes before f2, 0 = illegal combination, 1 = f1 comes after f2
	if ((f1.fieldCode <= 0) || (f2.fieldCode <= 0))
		return 0;

	if (f1.fieldCode < f2.fieldCode)
		return -1;

	if (f2.fieldCode < f1.fieldCode)
		return 1;

	return 0;
}

SField::ref SField::getField(int type, int value)
{
	return getField(FIELD_CODE(type, value));
}

std::string SField::getName() const
{
	if (fieldName != NULL)
		return fieldName;
	if (fieldValue == 0)
		return "";
	return boost::lexical_cast<std::string>(static_cast<int>(fieldType)) + "/" +
		boost::lexical_cast<std::string>(fieldValue);
}