package com.github.dtschust.zork.repl.actions;

import com.github.dtschust.zork.Zork.Type;
import com.github.dtschust.zork.ZorkGame;
import com.github.dtschust.zork.repl.Action;
import com.github.dtschust.zork.types.HasSetOfCollectable;
import com.github.dtschust.zork.types.ZorkObject;
import com.github.dtschust.zork.types.ZorkRoom;

import java.util.List;
import java.util.Set;

import static com.github.dtschust.zork.Zork.Type.*;

/**
 * Delete: figure out what object it is and delete it accordingly.  Rooms are especially tricky
 */
public class DeleteAction implements Action {
    private static void deleteElementFromSpace(ZorkGame game, Type space, Type element, String object) {
        for (ZorkObject tempObject : game.values(ZorkObject.class, space)) {
            Set<String> set = ((HasSetOfCollectable) tempObject).getSetFromType(element);
            if (set.contains(object)) {
                set.remove(object);
                game.put(space, tempObject);
            }
        }
    }

    @Override
    public boolean matchesInput(List<String> arguments) {
        return arguments.get(0).equals("Delete");
    }

    @Override
    public int getMinimumArgCount() {
        return 2;
    }

    @Override
    public void run(ZorkGame game, List<String> arguments) {
        final String object = arguments.get(1);

        switch (game.getTypeFromLookup(object)) {
            case ROOM:
                for (ZorkRoom tempRoom : game.values(ZorkRoom.class, ROOM)) {
                    for (String key : tempRoom.border.keySet()) {
                        if (tempRoom.border.get(key).equals(object)) {
                            tempRoom.border.remove(key);
                        }
                    }
                    game.put(ROOM, tempRoom);
                }
                break;
            case ITEM:
                deleteElementFromSpace(game, ROOM, ITEM, object);
                deleteElementFromSpace(game, CONTAINER, ITEM, object);
                break;
            case CONTAINER:
                deleteElementFromSpace(game, ROOM, CONTAINER, object);
                break;
            case CREATURE:
                deleteElementFromSpace(game, ROOM, CREATURE, object);
                break;
        }
    }
}