package net.ciklum.icfpc11.domain.greenspoon10

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

/**
 * blabla
 * @author vic
 */
@Typed
class Get extends Function {

    @Override
    Function apply(Function arg) {
        super.apply(arg)
        if (!(arg instanceof ConstantFunction)) {
            throw new GameError("Can't get() with a non-constant arg: $arg!")
        }
        ConstantFunction constArg = arg as ConstantFunction
        if (!constArg.isValidSlotNumber()) {
            throw new GameError("Can't get() invalid slot number: $arg!")
        }
        Slot slot = Game.instance.currentProponent.slots[constArg.value]
        if (!slot.alive) {
            throw new GameError("Cant get() a dead slot ${constArg.value}!")
        }
        // TODO: Maybe we need to make a clone???
        return slot.value
    }

    @Override
    String toString() {
        Card.get.name()
    }
}