package net.ciklum.icfpc11.parser

import net.ciklum.icfpc11.domain.Card
import net.ciklum.icfpc11.domain.GameError

/**
 * Input parser
 * @author mym
 */
@Typed
final class ArgumentParser {
    Command parse(String arg1, String arg2, String arg3) {
        Application application = Application.from(arg1)
        String cardString, slotString
        if (application == Application.LEFT) {
            cardString = arg2
            slotString = arg3
        } else {
            cardString = arg3
            slotString = arg2
        }
        int slot = Integer.parseInt(slotString)
        if (!isSlotNumberValid(slot)) {
            throw new GameError("Invalid slot number ${slot}")
        }
        Card card = Card.valueOf(cardString)
        new Command(application, slot, card)
    }

    boolean isSlotNumberValid(int slot) {
        return slot >= 0 && slot <= 255
    }
}