package things;

import com.fasterxml.jackson.core.JsonProcessingException;

/**
 * Base class for inputs or outputs.
 *
 * @see Resource
 */
public abstract class IO extends NamedResource {
    private final Thing parent;

    protected IO(Thing parent, String name) {
        super(name);
        this.parent = parent;
    }

    protected Thing getParent() {
        return parent;
    }

    @Override
    public String getURI() {
        return parent.getURI() + "/" + getName();
    }

    @Override
    public String getJSON() throws JsonProcessingException {
        return Things.sharedObjectMapper().writerWithView(JSONViews.IODetail.class).writeValueAsString(this);
    }

    /**
     * Returns the current value of the input or output.
     *
     * @return  Current value.
     */
    abstract public int getValue();
}