#pragma once

#include <memory>
#include <istream>
#include <vector>
#include <map>
#include <string>

#include "brain/neural_node.h"
#include "brain/sensor.h"
#include "brain/bias_node.h"
#include "brain/neuron.h"

class NeuralNetwork
{
public:
    NeuralNetwork(std::istream &&networkConfigFile, int numberOfSensors, int numberOfOutputs);
    NeuralNetwork(std::istream &&networkConfigFile, std::vector<bool> sensorInitialValues, int numberOfOutputs);
    
    void setInput(int inputIndex, double activation);
    int findMaxOutputIndex() const;

    int numberOfSensors() const { return _sensors.size(); }
    int numberOfOutputs() const { return _outputs.size(); }
	
private:
    std::map<int, std::shared_ptr<Sensor>> _sensors;
    std::shared_ptr<BiasNode> _biasNode;
    std::map<int, std::shared_ptr<Neuron>> _hiddenNodes;
    std::map<int, std::shared_ptr<Neuron>> _outputs;

    void parseFile(std::istream &&file);
    
    void addLink(std::shared_ptr<NeuralNode> source, std::shared_ptr<Neuron> destination, double weight);
    std::shared_ptr<Sensor> findOrAddSensor(int id);
    std::shared_ptr<Neuron> findOrAddNeuron(int id);
};