/*
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/* 
 * File:   Layer.cpp
 * Author: jens
 * 
 * Created on 25. Oktober 2019, 08:13
 */

#include "Layer.hpp"
using namespace std;

Layer::Layer(const string &name, size_t id, size_t numVisibleX, size_t numVisibleY, size_t numHidden, size_t numContext)
: Rbm(numVisibleX*numVisibleY+numContext, numHidden)
, next(nullptr)	
, prev(nullptr)	
, m_name(name)
, m_id(id)
, m_numVisibleX(numVisibleX)
, m_numVisibleY(numVisibleY)
, m_numContext(numContext)
, m_context(0, numContext)
{
	cout << "Create Layer " << m_name << "." << to_string((int)m_id) << endl;
}

Layer::Layer(const Layer& orig)
: Rbm(orig.bv().n_elem, orig.bh().n_elem)
, next(nullptr)	
, prev(nullptr)	
, m_name(orig.m_name)
, m_id(orig.m_id)
, m_numVisibleX(orig.m_numVisibleX)
, m_numVisibleY(orig.m_numVisibleY)
{
}

Layer::~Layer()
{
}

bool Layer::weightsLoad(std::string const &dir, std::string const &prj)
{
	arma::mat w;
	arma::mat bh;
	arma::mat bv;
	bool result = true;
	result &= w.load(filePrefix(dir, prj) + ".w.dat", arma::arma_ascii);
	result &= bh.load(filePrefix(dir, prj) + ".bh.dat", arma::arma_ascii);
	result &= bv.load(filePrefix(dir, prj) + ".bv.dat", arma::arma_ascii);

	if (result)
	{
		std::cout << "Layer " << m_id << ": Importing weights" << std::endl;
		weightsAssign(w, bh, bv);
	}

	return result;
}

bool Layer::weightsSave(std::string const &dir, std::string const &prj)
{
	bool result = true;
	result &= whv().save(filePrefix(dir, prj) + ".w.dat", arma::arma_ascii);
	result &= bh().save(filePrefix(dir, prj) + ".bh.dat", arma::arma_ascii);
	result &= bv().save(filePrefix(dir, prj) + ".bv.dat", arma::arma_ascii);

	if (result)
	{
		std::cout << "Layer " << m_id << ": Exporting weights" << std::endl;
	}

	return result;
}

Json::Value Layer::toJson() const
{
	std::cout << "Exporting Layer " << to_string((int)m_id) << std::endl;
	Json::Value layer;
	layer["name"] = m_name;
	layer["id"] = (int)m_id;
	layer["numVisibleX"] = (int)m_numVisibleX;
	layer["numVisibleY"] = (int)m_numVisibleY;
	layer["numHidden"] = (int)whv().n_cols;
	layer["numContext"] = m_numContext;
	layer["rbm"] = Rbm::toJson();
	
	return layer;

}