package simulation;

import configuration.SimulationConfiguration;
import configuration.SimulationConfigurationSingleton;
import metadata.BuildingMetadata;
import metadata.WarehouseMetadata;

import java.util.ArrayList;
import java.util.Collection;
import java.util.Optional;

public class Warehouse extends Building implements WarehouseSubject {
    private final WarehouseMetadata metadata;
    private final Collection<WarehouseObserver> observers = new ArrayList<>();

    private int planeCount = 0;

    public Warehouse(int id, String type, int x, int y, WarehouseMetadata metadata) {
        super(id, type, x, y);
        this.metadata = metadata;
    }

    @Override
    public Optional<Component> update() {
        return Optional.empty();
    }

    @Override
    public void processInput(Component input) {
        planeCount++;
    }

    private void sellComponent() {
    }

    public void attach(WarehouseObserver observer) {
        observers.add(observer);
    }

    public void detach(WarehouseObserver observer) {
        observers.remove(observer);
    }

    public void notifyObservers() {
        boolean isFull = planeCount >= getCapacity();
        observers.forEach(o -> o.update(isFull));
    }

    private static int getCapacity() {
        SimulationConfiguration configuration = SimulationConfigurationSingleton.getInstance().getConfiguration();
        WarehouseMetadata metadata = (WarehouseMetadata) configuration.getMetadata().get(BuildingMetadata.TYPE_WAREHOUSE);

        return metadata.getInput().getCapacity();
    }

    @Override
    public String toString() {
        boolean isFull = planeCount >= getCapacity();

        return String.format("[planes: %d, full: %s]", planeCount, isFull);
    }
}