#include "PgConstraintContainer.h"
#include "Pgsql_Col.h"
#include <algorithm>

std::string PgConstraintContainer::getLoadQuery() const
{
	std::string q =  R"__(
SELECT oid, conname, connamespace, contype, condeferrable,
	condeferred, convalidated, conrelid, contypid, conindid,
	confrelid, confupdtype, confdeltype, confmatchtype,
	conislocal, coninhcount, connoinherit, conkey, confkey,
	conpfeqop, conppeqop, conffeqop, conexclop, conbin, consrc,
	pg_get_constraintdef(oid)
FROM pg_constraint)__";

//	auto cat = m_catalogue.lock();
//	if (cat && cat->serverVersion() >= 90400)
//		q += ", indisreplident ";
//	q += "\nFROM pg_index";
	return q;
}

//void operator<<(std::vector<int16_t> &s, const Pgsql::Value &v)
//{

//}

//void operator<<(std::vector<Oid> &s, const Pgsql::Value &v)
//{

//}




PgConstraint PgConstraintContainer::loadElem(const Pgsql::Row &row)
{
	Pgsql::Col col(row);
	PgConstraint v;
	col >> v.oid >> v.name >> v.connamespace >> v.type >> v.deferrable
		>> v.deferred >> v.validated >> v.relid >> v.typid >> v.indid
		>> v.frelid >> v.fupdtype >> v.fdeltype >> v.fmatchtype
		>> v.islocal >> v.inhcount >> v.noinherit;
	col.getAsArray<int16_t>(std::back_inserter(v.key));
	col.getAsArray<int16_t>(std::back_inserter(v.fkey));
	col.getAsArray<Oid>(std::back_inserter(v.pfeqop));
	col.getAsArray<Oid>(std::back_inserter(v.ppeqop));
	col.getAsArray<Oid>(std::back_inserter(v.ffeqop));
	col.getAsArray<Oid>(std::back_inserter(v.exclop));
	col >> v.bin >> v.src >> v.definition;
	return v;
}

const PgConstraint* PgConstraintContainer::getFKeyForTableColumn(Oid relid, int16_t attnum) const
{
	const PgConstraint *result = nullptr;
	// WHat do we want to find here? On ly single column constraints or all contstraints.
//	auto res = std::find_if(m_container.begin(), m_container.end(),
//		[relid, attnum] (const auto &c) {
//			// the find on v.key may not look super efficient but remember it in general only has one or two elements.
//			return relid == c.relid &&
//					(std::find(attnum.begin(), attnum.end(), v.key) != attnum.end());
//		});
	return result;
}