package org.apidesign.anagram.app.register;

import org.apidesign.anagram.api.Scrambler;

import org.apidesign.anagram.api.UI;

import org.apidesign.anagram.api.WordLibrary;

public final class Launcher {

    private static Class<? extends WordLibrary> wordLibrary;

    private static Class<? extends Scrambler> scrambler;

    private static Class<? extends UI> ui;

    private Launcher() {

    }

    public static void registerWordLibrary(Class<? extends WordLibrary> libraryClass) {

        wordLibrary = libraryClass;

    }

    public static void registerScrambler(Class<? extends Scrambler> scramblerClass) {

        scrambler = scramblerClass;

    }

    public static void registerUI(Class<? extends UI> uiClass) {

        ui = uiClass;

    }

    public static UI launch() throws Exception {

        WordLibrary w = wordLibrary.newInstance();

        Scrambler s = scrambler.newInstance();

        return ui.getConstructor(WordLibrary.class, Scrambler.class).newInstance(w, s);

    }

}